Rabimba Karanjai

WebAI Badge Studio: Espruino at Google WebAI Summit

Mon, 02 Nov 2026 00:00:00 +0000

How a 45-minute portrait queue turned into a live USB-C hardware hack, a bit-exact 96,000-byte 2bpp BWYR codec, surgical .bootcde firmware patching, and an open-source WebAI Badge Studio running LiteRT-LM and MediaPipe over WebGPU.

TxnQA: Benchmarking Analytical Reasoning and Evidence Grounding over Transaction Event Sequences

Mon, 19 Oct 2026 00:00:00 +0000

LA Tech Week 2026 — Google for Developers Codelabs & AI Workshops

Thu, 15 Oct 2026 14:00:00 +0000

Workshop Overview

At LA Tech Week 2026, Google for Startups and Google for Developers hosted hands-on codelab tracks for enterprise founders, engineers, and technical leaders. Alongside fellow Google Developer Expert Kiruthika Subramani, I co-instructed two interactive technical workshops detailing how to build production-grade agentic architectures with Google Cloud and the Model Context Protocol (MCP).

Workshop 1: Location Intelligence ADK Agent with MCP Servers

Interactive Presentation & Teleprompter:
Official Google Codelab:
Core Technologies: Google Agent Development Kit (ADK), BigQuery Geospatial Data, Google Maps Grounding Lite MCP, Gemini 2.5 Flash

Architectural Focus

Agent Development Kit (ADK) Core: Structuring autonomous agents with schema-enforced tool interfaces, state persistence, and error-recovery loops.
BigQuery MCP Integration: Bridging spatial data warehouses with natural language queries—enabling dynamic SQL generation, bounding box filtering, and spatial joins over enterprise logistics tables without manual query plumbing.
Google Maps Grounding Lite MCP: Validating place details, computing multi-modal travel times, and grounding model answers against live physical coordinates.
Production Guardrails: Rate-limiting spatial queries, handling disconnected MCP sessions, and sanitizing agent reasoning steps.

Workshop 2: Command & Control: Gemini, MCP & Agentic CLI

Interactive Presentation & Teleprompter:
Official Google Codelab:
Core Technologies: Antigravity CLI (agy), Developer Knowledge MCP, Agent Skills, Nano Banana 2 Image Gen, Google Cloud Run

Architectural Focus

Headless Agent Orchestration: Driving terminal-first agentic developer loops with Antigravity CLI (agy), managing multi-step project scaffolding and debugging sessions.
Developer Knowledge MCP: Exposing local codebase indexing, symbol trees, and architecture specs to agent runtimes without manual context dumping.
Multimodal Generation & Deployment: Chaining multimodal synthesis via Nano Banana 2 for visual assets directly into automated container packaging and deployment to Google Cloud Run.
Composable Agent Skills: Packaging reusable capability modules across teams to enforce testing, security, and deployment standards across agent prompts.

Reception & Industry Feedback

“Google for Startups and Google for Developers take over #LATECHWEEK… Thanks to my GDEs Rabimba Karanjai and Kiruthika Subramani for providing such wonderful and thought driven codelabs.” — Marty Fortier, Google Developer Ecosystem / Startup Lead

“LA TECH WEEK by a16z was hands-on. We built small tools around real questions from our day-to-day, like which truck a load needs and how to read proof-of-delivery paperwork faster, and got a map agent running in the cloud in a guided codelab… Thank you to Rabimba Karanjai and Kiruthika Subramani, our instructors in the Google for Developers codelabs.” — Elizabeth Moscoso, Founder & Logistics Operator

CM-DPO: Constraint-Margin Direct Preference Optimization for LLM Planning

Tue, 06 Oct 2026 00:00:00 +0000

A Picture is Worth a Thousand Tokens: Lossless Multilingual Context Compression via Pictorial Intermediate Representations

Thu, 01 Oct 2026 00:00:00 +0000

CoJo-RAG: Conformalized Joint Co-Optimization of Retrieval and Fine-Tuning

Thu, 01 Oct 2026 00:00:00 +0000

Designing the Outside Option: Anchors, Mixed Equilibria, and Welfare in LLM Routing Auctions

Thu, 01 Oct 2026 00:00:00 +0000

Motivated Chain-of-Thought and Reduced Scrutiny in LLM Judges

Thu, 01 Oct 2026 00:00:00 +0000

Unanimous but Wrong: Conformity in Multi-Agent LLM Audit Deliberation

Thu, 01 Oct 2026 00:00:00 +0000

Curriculum Vitae

Sun, 27 Sep 2026 00:00:00 +0000

Rabimba Karanjai

Staff Agentic AI Researcher · PhD · Google Developer Expert

Download Full CV (PDF) Contact

2010 – 2013

The Builder Awakens

Started as a Programmer Analyst at Cognizant, building automated mobile testing solutions with OpenCV. First taste of making machines see and decide.

OpenCV Mobile Testing Automation

2014 – 2015

Watson & The Research Lab

Joined IBM T.J. Watson Research Lab. Embedded cognitive computing and NLP into Watson solutions. Trained custom NLP models before "LLM" was a buzzword.

Watson NLP DeepQA

2015 – 2018

VR, Browsers & a Master's Degree

MS at Rice University. Research Assistant parallelizing JavaScript for VR headsets at Mozilla Research. Optimized WebGL and Three.js for wearable VR. Earned a Mozilla Research Fellowship.

WebVR WebGL Three.js Mozilla

2015 & 2017

Patents at IBM Almaden

Two summer internships at IBM Almaden Research Center. Invented a multi-factor authentication system using biometrics + blockchain — awarded US Patent US11025643B2. Built tamper-evident systems with ARM TrustZone.

Patent Blockchain Biometrics TrustZone

2020

The Startup Life

Machine Learning Lead at Fireflies.ai — built the on-premise ASR engine used by 10M+ users. Then Senior Engineer at Clearedin, designing phishing detection and URL scanning pipelines.

ASR DeepSpeech Phishing Detection

2020 – 2025

The PhD Quest: Teaching AI to Reason

PhD at University of Houston, advised by Prof. Weidong Shi. Dissertation: "Teaching AIs to Reason and Code, Confidentially." Won the Dan E. Wells Outstanding Dissertation Award and UH Best Dissertation Award.

40+ publications (41 published, 28 first-author). 4x research grants. ACM SIGSOFT Distinguished Paper Award. Best Dissertation Award. Google Cloud Research Innovator. NeurIPS 2026.

LLM Reasoning Smart Contracts Code Generation Blockchain

2025 – Present

PayPal: Production AI at Scale

Staff Agentic AI Researcher at PayPal Research (San Jose). Lead technical strategy for production-scale agentic AI: built a voice-to-voice model with NVIDIA and a frontier multimodal model with Google (lead author on both), invented the CM-DPO preference-optimization framework, and train frontier LLMs up to 120B parameters. Designed a multi-agent adversarial evaluation arena; filed 3 U.S. patents.

Voice Commerce Agentic AI 120B LLMs Production

41+

Publications (41 published)

1 + 6

US Patents (1 issued, 6 filed/pending)

85+

Invited Talks

$90K+

Research Grants (4x)

Selected Awards

🏆 Dan E. Wells Outstanding Dissertation Award

🏅 ACM SIGSOFT Distinguished Paper Award

⭐ Google Developer Expert (Web & ML)

🌐 Google Cloud Research Innovator

🎓 UH Best Dissertation Award

🔥 NVIDIA Developer Champion

⚡ Google TPU Builders (2026)

🥇 Outstanding PhD Student — UH (2022–2024)

🎖️ HPE DSI AI Showcase — 3rd Place (2023)

Service & Community

Associate Chair — AAAI 2027 & ACM CSCW 2026 · Track Chair — ICEDEG 2026

Scientific Advisory Committee — Texas Quantum Initiative

Google Developer Expert — Web Technologies (2018–present), Google Cloud (2024–present) · Google TPU Builders (2026)

Reviewer (Journals) — PLOS One, Frontiers in Blockchain, ACM DLT, ACM TALLIP, Connection Science, ACM TWEB

Reviewer (Conferences) — CHI 2026, IEEE VR 2026, AAAI 2025, ICLR 2024, IEEE ICEDEG 2025

Want the full detailed CV with publications, references, and complete work history?

Download Full CV (PDF)

Specialists Hold, Generalists Discount: Asymmetric Equilibrium in LLM Routing Auctions

Sun, 27 Sep 2026 00:00:00 +0000

House of AI: AI Safety Forum — Closing Panel

Sat, 12 Sep 2026 16:40:00 -0700

Bay Area Pujo Parikrama

Tue, 01 Sep 2026 00:00:00 +0000

is a comprehensive community guide and route planner for Durga Puja celebrations across the San Francisco Bay Area.

Key Features:

31 Pujas Across 6 Regions — complete listings covering South Bay, East Bay, Tri-Valley, Central Valley, Peninsula, and Sacramento
Parikrama Route Planner — interactive routing tool to plan pandal-hopping itineraries across multiple celebrations in a single day
Real-Time Ritual Tracking — schedules, bhog availability, ticketing info, and next-ritual countdowns aligned with the panjika calendar
Bilingual Experience — Bengali and English cultural context, including Mahalaya traditions and historical background

Houston Pujo Parikrama

Tue, 01 Sep 2026 00:00:00 +0000

is a community-driven portal and route planner mapping Durga Puja celebrations across Greater Houston, Texas.

Key Features:

Regional Coverage — includes major Houston institutions including Houston Durga Bari Society (Biswa Bangla Sarad Samman winner), SDKKM Temple, Mantra Pearland, and Maitri in Houston
Parikroma Route Planner — route planning across Energy Corridor, West Houston, Southwest Houston / Pearland, and surrounding areas
Full Festival Calendars — schedules spanning Mahalaya, Bodhan, Shashthi–Dashami, and Bijoya Sammilani
Community-First Details — free entry tags, bhog timings, cultural program headliners, and direct navigation links

Reachability-Based Capability Confinement for LLM Agents under Indirect Prompt Injection

Sun, 30 Aug 2026 00:00:00 +0000

PACE: Policy-Attested Contract Execution for Safe AI Agents in Decentralized Finance

Tue, 18 Aug 2026 00:00:00 +0000

When Agents Act on Web3: An Attack-Surface Survey of MCP, Skills, and Tool Calling

Tue, 18 Aug 2026 00:00:00 +0000

Context Contamination at USENIX Security 26 — Oral Presentation & Poster

Wed, 12 Aug 2026 09:00:00 +0000

Allocation Before Ranking: Decoupled Token Compression for OmniLLMs

Mon, 03 Aug 2026 00:00:00 +0000

Racecraft: Fine-Tuning Gemma 4 with DPO for Sub-150ms On-Device Coaching at 130 MPH

Sun, 02 Aug 2026 00:00:00 +0000

Context Contamination in LLM Analysis of Network Security Logs: Poison with Passive Prompt Injection and Mitigation Evaluation

Sat, 01 Aug 2026 00:00:00 +0000

Racecraft: Tale of Car Sensors

Sat, 01 Aug 2026 00:00:00 +0000

AEGIS-CHAOS: From 'Vibe Coding' to Closed-Loop SRE

Sun, 19 Jul 2026 00:00:00 +0000

I-BRIDGE: Access-Adjusted Benchmarking of Synthetic AI-Assisted Immigration Decision Systems for Inclusive E-Governance

Wed, 08 Jul 2026 00:00:00 +0000

OpenXLA Summer DevLab 2026 — Benchmarking vLLM on XLA Backends

Thu, 25 Jun 2026 18:00:00 +0000

Talk Overview

Invited by Google’s ML and TPU teams to present at OpenXLA Summer DevLab 2026 hosted at Google Corporate HQ in Mountain View, CA, alongside speakers from Google, NVIDIA, and the Meta PyTorch team.

The talk details our empirical evaluation of the matured vLLM + OpenXLA stack, contrasting it with the native vLLM + CUDA serving path under identical enterprise workloads.

Key Technical Insights

1. The Runtime Collision: Dynamic CUDA vs. Static OpenXLA

GPU / CUDA: Inherently dynamic, memory allocation and kernel launches scale on the fly to arbitrary prompt lengths with near-instantaneous container startup.
TPU / OpenXLA: Built around high-density Systolic Arrays streaming deterministic matrix multiplications. XLA compiles rigid machine code ahead of time, requiring incoming variable-length prompts to be mapped into static padding buckets (128, 256, 512, 1024 tokens), introducing compute padding overhead.
The Compilation Wall: Uncompiled sequence configurations or cold starts trigger ahead-of-time compilation passes that can pause server execution for 20–30 minutes, complicating elastic autoscaling.

2. The Throughput Trap vs. Usable Goodput

Standard evaluations optimize for Peak Throughput (tokens/sec), masking degraded latency.
LLM inference splits into:
- Prefill phase: Compute-bound; dictates Time to First Token (TTFT).
- Decode phase: Memory-bandwidth-bound; dictates Time Per Output Token (TPOT).
We evaluate capacity using Usable Goodput — requests per second successfully meeting both TTFT ≤ 1000 ms and TPOT ≤ 50 ms simultaneously.

3. Interconnect Limits & Tail Latency Collapse

On single-chip configurations (e.g., Llama-3.1 8B), the system scales predictably, keeping P99 response loops under 38 ms.
For partitioned 70B models requiring inter-chip all-reduce tensor collectives, operating over baseboard PCIe Gen5 without NVLink bridges quickly saturates the bus. P99 decode tail latency spikes to ~466 ms/token, causing usable goodput to collapse from 9.3 down to 2.4 requests/second under peak concurrency.

4. The 2026 Unified vLLM-XLA Stack Architecture

Consolidated Control Layer: Google’s internal JetStream stack was officially archived in early 2026 and folded into the JAX-native tpu-inference engine, with vLLM providing the OpenAI-compatible frontend orchestrator.
Torchax Lowering: Standard PyTorch graphs are caught on-the-fly and lowered into StableHLO structures without eager Python interpreter bottlenecks.
Ragged Paged Attention v3 (RPA v3): Implemented in Google’s low-level Pallas and Mosaic kernel layout engines, RPA v3 enables dynamic ragged tiling inside HBM, fusing KV-cache scatter steps into the attention block and delivering up to 86% Model Bandwidth Utilization (MBU) during generation.

Resources & Artifacts

Presentation Slides:
Benchmark Harness & Test Suite:
Deep-Dive Engineering Post:
Recorded Session Stream:

Splitting the Brain to Beat the Clock

Thu, 25 Jun 2026 00:00:00 +0000

The Throughput Trap: Benchmarking vLLM on OpenXLA and the Reality of Production LLM Serving

Thu, 25 Jun 2026 00:00:00 +0000

Teaching the Coach to Read the Driver

Mon, 15 Jun 2026 00:00:00 +0000

Racecraft (Project Koru) · Prologue — The Origin Story

Wed, 10 Jun 2026 00:00:00 +0000

I wrote about Project Koru (Racecraft) and how we built an AI Race Coach at Sonoma Raceway with Google Developer Experts. The post covers the origin story, the technical stack, and what we learned building real-time AI coaching at 100 mph.

Featured by Google:

— Google Developers Blog (July 2026)
— Google Developers Blog (January 2026)
— official Google video on YouTube

The 800-Millisecond Problem

Wed, 10 Jun 2026 00:00:00 +0000

The Blind Spot Horizon: Why Your AI Benchmarks Are Lying to You

Tue, 09 Jun 2026 00:00:00 +0000

Google I/O GDE Field Test — AI Race Coach at Sonoma Raceway

Sat, 23 May 2026 08:00:00 +0000

Dr.MRI.AI

Mon, 18 May 2026 00:00:00 +0000

Dr.MRI.AI is a web-based DICOM viewer built on a simple observation: the hard part of medical AI isn’t the model, it’s knowing what to send it. A typical MRI study contains 200+ slices, but only a handful carry the signal. Dr.MRI.AI plans the slice selection before any multimodal analysis runs.

How it works — Plan → Review → Synthesize:

Plan: Gemma 4 produces a structured plan (which series, slice range, window/level) from your clinical question in plain English. You can accept, edit, or reject it.
Review: The multimodal model analyzes only the focused subset — 200+ slices reduced to ~16 frames, ~99% fewer image tokens.
Synthesize: A final text-only pass produces a structured report with clickable slice references; export findings plus reviewed evidence as one bundle.

Privacy-first architecture:

DICOM files are processed entirely in the browser — no data is uploaded to any server
Fully browser-local inference via onnx-community/gemma-4-E2B-it-ONNX through Transformers.js + WebGPU
Provider-agnostic: Gemini API, OpenAI-compatible endpoints, Ollama (MedGemma planning + Gemma 4 review), or fully on-device Gemma 4 Browser

Built with React 19 + TypeScript + Vite and Cornerstone3D for medical image rendering. Featured in the Google Developer Experts May–Jun 2026 AI community roundup. Educational/research tool — not certified as a medical device.

My Friend's MRI Didn't Come with a Manual, So I Built One with AI

Mon, 18 May 2026 00:00:00 +0000

The Hidden Performance Trap in Causal Ring Attention

Thu, 07 May 2026 00:00:00 +0000

Unboxing Gemma: High-Throughput Sparse Autoencoder (SAE) Training on Google Cloud TPU v5e

Sat, 02 May 2026 00:00:00 +0000

AI Race Coach (Project Koru)

Fri, 01 May 2026 00:00:00 +0000

The AI Race Coach (Project Koru) is a real-time coaching system for motorsports, developed during the Google I/O GDE Field Test at Sonoma Raceway. The project demonstrated how agentic AI can bridge domain gaps between software engineering and racing expertise.

Architecture:

Antigravity — stateful orchestration and telemetry ingestion
Gemini API — cloud-based driver modeling and strategic insights
Gemma 4 12B — on-device edge intelligence for zero-latency audio coaching
Jetpack Compose — high-refresh Android dashboard for real-time visualization
Google ADK — multi-agent orchestration framework
Custom USB Interface — 10 Hz telemetry stream wired directly from vehicle sensors to Pixel 10

The system identified performance gains beyond human perception — including a new throttle application zone mid-corner in Turn 2 that secured a 0.1-second advantage. Featured on the Google Developers Blog and covered in my blog post Racecraft: The Origin Story.

Empowering Smart Contracts with Real-time On-Chain AI Inferences

Fri, 01 May 2026 00:00:00 +0000

Rethinking Publication: A Certification Framework for AI-Enabled Research

Thu, 23 Apr 2026 00:00:00 +0000

Beyond the Chatbot: A Blueprint for Trustable AI

Wed, 15 Apr 2026 10:00:00 +0000

Building a Multimodal Document Intelligence Pipeline with Gemma 4 E2B

Thu, 02 Apr 2026 00:00:00 +0000

[Read full post →]( a Multimodal Document Intelligence Pipeline with Gemma 4 E2B.html)

The Gemma 4 E2B Fine-Tuning Cookbook

Thu, 02 Apr 2026 00:00:00 +0000

Write Once, Scale Everywhere

Mon, 23 Mar 2026 00:00:00 +0000

United in Defense: Architecting Safe and Trustworthy AI Agents

Fri, 20 Mar 2026 10:00:00 +0000

Visualizing the Invisible: How Nano Banana 2 Turns Dense Science into Stunning Art

Thu, 26 Feb 2026 00:00:00 +0000

CausalGraphX: A Counterfactual Graph Neural Network Framework for Explainable Systemic Risk Assessment

Sun, 01 Feb 2026 00:00:00 +0000

QuCoWE: Quantum Contrastive Word Embeddings with Variational Circuits for Near-Term Quantum Devices

Sun, 01 Feb 2026 00:00:00 +0000

zkRansomware: Proof-of-Data Recoverability and Multi-round Game Theoretic Modeling of Ransomware Decisions

Sat, 10 Jan 2026 00:00:00 +0000

Aligning Vision Language Models via anchor

Thu, 01 Jan 2026 00:00:00 +0000

Bridging Confidentiality and Reliability: Open-Weight Agents for Legal Reasoning

Thu, 01 Jan 2026 00:00:00 +0000

Closing the Cost Gap in Verifier-Guided RL: A Smart Contract Case Study

Thu, 01 Jan 2026 00:00:00 +0000

ConferenceRank

Thu, 01 Jan 2026 00:00:00 +0000

is a unified platform for discovering, evaluating, and tracking computer science conference and journal venues. It aggregates public ranking and bibliometric data into an accessible, interactive interface backed by programmatic APIs.

Key Features

Conference & Journal Rankings — Complete CORE / ICORE rankings (A*, A, B, C) with historical tier tracking, side-by-side with SCImago Journal Rank (SJR) quartiles (Q1–Q4), H-index, and FoR discipline categories.
Venue & Journal Suggester — Abstract-matching engine using TF-IDF and discipline lexicons to recommend stretch, target, and safe venues for an upcoming paper.
Deadlines & Watchlist — Submission countdowns normalized to Anywhere on Earth (AoE), with 1-click Google Calendar sync, .ics export, and zero-login local browser watchlists.
Acceptance Rate Trends — Decades of acceptance statistics (submitted, accepted, rates) for leading venues across systems, AI/ML, security, databases, theory, and graphics.

Built for AI Agents

ConferenceRank is machine-consumable out of the box:

MCP Server (npx conferencerank-mcp) — Exposes six typed tools for MCP-compatible agents: search_venues, get_venue, compare_venues, suggest_venues, upcoming_deadlines, and acceptance_stats.
Static JSON API — CDN-cached endpoints for conferences, journals, and upcoming deadlines, regenerated on weekly automated GitHub Actions runs.
Agent Skill & llms.txt — Ships full instructions and machine-readable context for agentic workflows.

Hype or Hope? Training LLMs on Decentralized GPU Clouds

Thu, 01 Jan 2026 00:00:00 +0000

Profiler: Per-Question Persona Conditioning of Frozen LLMs via Retrieval and Fusion of Synthesized Profiles

Thu, 01 Jan 2026 00:00:00 +0000

Rules That Govern: A Per-Property Analysis of Multi-Agent LLM Deliberation

Thu, 01 Jan 2026 00:00:00 +0000

VerifyGen-X: Secure Cross-Chain Smart Contract Generation via Scalable Reinforcement Learning from Formal Verification Feedback

Thu, 01 Jan 2026 00:00:00 +0000

A Split‑Brain Neuro‑Symbolic Training Method for High‑Velocity Autonomous Coaching from Telemetry

Thu, 18 Dec 2025 00:00:00 +0000

Fine-Tuning at the Redline: Architecting a Trustable AI Racing Coach

Thu, 18 Dec 2025 00:00:00 +0000

The Context Trap: Why Scaling Laws Can’t Break the Ceiling of Uncertainty

Wed, 26 Nov 2025 00:00:00 +0000

Building Production AI Systems with Free Cloud GPUs

Tue, 18 Nov 2025 00:00:00 +0000

HPCAgentTester: A Multi-Agent LLM Approach for Enhanced HPC Unit Test Generation

Sat, 01 Nov 2025 00:00:00 +0000

Securing Smart Contract Languages with a Unified Agentic Framework for Vulnerability Repair in Solidity and Move

Sat, 01 Nov 2025 00:00:00 +0000

Unlocking On-Chain Intelligence: A Practical Framework for GenAI-Powered Smart Contracts

Sat, 01 Nov 2025 00:00:00 +0000

Evaluating the Quality of Randomness and Entropy in Tasks Supported by Large Language Models

Fri, 01 Aug 2025 00:00:00 +0000

Teaching AIs to Reason and Code, Confidentially

Fri, 25 Jul 2025 00:00:00 +0000

🎤 SpeakWise: Build an AI Public Speaking Coach with Gemma 3n

Tue, 01 Jul 2025 00:00:00 +0000

From Models to Agents: Shipping Enterprise AI Faster with Google’s MCP Toolbox & Agent Development Kit

Wed, 18 Jun 2025 00:00:00 +0000

From General Reasoning to Domain Expertise: Uncovering the Limits of Generalization in Large Language Models

Mon, 16 Jun 2025 00:00:00 +0000

Google I/O 2025: GDE Summit, From Whiteboard to Users

Sun, 01 Jun 2025 10:00:00 +0000

Collaboration is all you need: LLM Assisted Safe Code Translation

Sun, 01 Jun 2025 00:00:00 +0000

From Whiteboard to Users: Making Research Accessible

Sun, 18 May 2025 10:00:00 +0000

Ransomware 3.0: Enhancing Risk Management and Mitigation Options with Proof-of-Decryptability and Smart Contracts

Thu, 01 May 2025 00:00:00 +0000

Build Smarter AI Agents Faster: Introducing the Google Agent Development Kit (ADK)

Wed, 09 Apr 2025 00:00:00 +0000

Deep Dive into the Google Agent Development Kit (ADK): Features and Code Examples

Wed, 09 Apr 2025 00:00:00 +0000

Unmasking the Shadows: AI Red Teaming in the Age of Gemini and VertexAI, fortified by SAIF

Sat, 05 Apr 2025 10:00:00 +0000

Synthesizing Public Opinions with LLMs: Role Creation, Impacts, and the Future to eDemocracy

Tue, 01 Apr 2025 00:00:00 +0000

LogBabylon: A Unified Framework for Cross-Log File Integration and Analysis

Sat, 01 Mar 2025 00:00:00 +0000

Weaving the Cosmos: WASM-Powered Interchain Communication for AI Enabled Smart Contracts

Mon, 24 Feb 2025 00:00:00 +0000

Artificial Intelligence-Based Target for Personalized Interventions of Atherosclerosis from Gut Microbiota Signature

Sat, 01 Feb 2025 00:00:00 +0000

LLM Reasoning & Code Generation

Wed, 01 Jan 2025 00:00:00 +0000

My research on LLMs spans reasoning evaluation, automated code/test generation, and reliability. Key contributions include:

AgentTester — A multi-agent framework for automated unit test generation that significantly improves software reliability (AIWare 2025).
HPCAgentTester — Extending multi-agent test generation to high-performance computing environments.
LogBabylon — A unified framework for cross-log file integration and analysis using LLMs.
Hallucination Mitigation — Techniques for reducing AI hallucinations in diagnostic and clinical contexts.
Evaluating LLM Rationality & Randomness — Benchmarking the quality of reasoning and entropy in LLM-supported tasks.
Synthesizing Public Opinions — Using LLMs to synthesize democratic discourse (IEEE ICEDEG 2025).

This line of research explores how multi-agent systems can produce more reliable, verifiable AI outputs, with applications from software engineering to healthcare.

Quantum Computing & AI

Wed, 01 Jan 2025 00:00:00 +0000

Exploring the intersection of quantum computing and machine learning:

QuCoWE — Quantum Contrastive Embeddings with Variational Circuits for near-term quantum devices (AAAI 2026). This work introduces a novel approach to learning embeddings using quantum variational circuits, designed to work within the constraints of current NISQ-era hardware.
Texas Quantum Initiative — Serving on the Scientific Advisory Committee, helping shape the state’s quantum research strategy.

This emerging research direction investigates how quantum advantages can be practically realized for machine learning tasks, even with today’s noisy intermediate-scale quantum devices.

Generating Move Smart Contracts based on Concepts

Tue, 17 Dec 2024 00:00:00 +0000

Supercharging GenAI: Ray, Kubernetes, and TPUs for Lightning-Fast Inference

Fri, 15 Nov 2024 10:00:00 +0000

LLM, Reasoning and Agentic Gemma

Tue, 12 Nov 2024 10:00:00 +0000

Smart Contract Code Translation based on Concepts

Fri, 01 Nov 2024 00:00:00 +0000

TPU as Cryptographic Accelerator

Tue, 01 Oct 2024 00:00:00 +0000

LLMinABox: On Device Personalized Diary & Concierge using your voice and Gemma

Tue, 24 Sep 2024 10:00:00 +0000

Adding All Flavors: A Hybrid Random Number Generator for dApps and Web3

Sun, 01 Sep 2024 00:00:00 +0000

Harnessing the Power of LLMs: Automating Unit Test Generation for High-Performance Computing

Sat, 06 Jul 2024 00:00:00 +0000

GDG Houston Presents: IO Extended Web Edition. The state of WebXR by Rambimba Karanjai

Thu, 20 Jun 2024 10:00:00 +0000

Talk to your Desktop, Code, PDF or anything, in any language, using your own LLM or Gemini

Tue, 18 Jun 2024 10:00:00 +0000

Walkthrough of Gemini and Gemma on Cloud and On-device

Tue, 18 Jun 2024 10:00:00 +0000

Google I⧸O Extended Edmonton 2024 Immersive art with AI

Sat, 15 Jun 2024 10:00:00 +0000

Stanford CS25: V2 I Emergent Abilities and Scaling in LLMs

Wed, 12 Jun 2024 10:00:00 +0000

LangChain Deep Dive with Rabimba Karanjai (Google Developer Expert)

Mon, 10 Jun 2024 10:00:00 +0000

This is what we mean when we say Google Developer Experts (GDE)

Mon, 10 Jun 2024 10:00:00 +0000

TPU As Cryptographic Accelerator: At Google Cloud Research Innovator Showcase

Mon, 10 Jun 2024 10:00:00 +0000

GDG Zagreb - Online Tech Talk #1

Thu, 06 Jun 2024 10:00:00 +0000

GDG Zagreb - Online Tech Talk #1 - State of WebXR and building with AR/VR today - Rabimba Karanjai

Thu, 06 Jun 2024 10:00:00 +0000

Collaboration Is All You Need: LLM Assisted Safe Code Translation

Wed, 05 Jun 2024 10:00:00 +0000

SolMover: https://dl.acm.org/doi/10.1145/3664646.3664771

Wed, 05 Jun 2024 10:00:00 +0000

My Google I/O 2024 Adventure: A GDE's Front-Row Seat to the Gemini Era

Wed, 05 Jun 2024 00:00:00 +0000

Mitigating Hallucinations in AI-Driven Medical Diagnosis

Mon, 20 May 2024 10:00:00 +0000

AI, LLMs, and the Future of the Web: A Conversation with Rabimba and Hemanth (PayPal) at Google I/O

Tue, 14 May 2024 10:00:00 +0000

Enhancing Vascular Disease Diagnosis through AI-Driven Analysis of Histopathology Images

Wed, 01 May 2024 00:00:00 +0000

Evaluating Irrationality in Large Language Models and Open Research Questions

Wed, 01 May 2024 00:00:00 +0000

Mitigating Hallucinations in AI-Driven Medical Diagnosis

Wed, 01 May 2024 00:00:00 +0000

SolMover: Feasibility of Using LLMs for Translating Smart Contracts

Wed, 01 May 2024 00:00:00 +0000

Trusted LLM Inference on the Edge with Smart Contracts

Wed, 01 May 2024 00:00:00 +0000

Berkley RDI: Code Translation

Wed, 10 Apr 2024 10:00:00 +0000

SolMover: Smart Contract Code Translation Based on Concepts

Wed, 10 Apr 2024 10:00:00 +0000

All We Need is Voter Feedback: A New Paradigm to Realize Politics without Politicians Using AI Models Aligned with Voter Inputs

Mon, 01 Apr 2024 00:00:00 +0000

MovieBuff: Dive Deeper into Movies with Generative AI

Sun, 31 Mar 2024 00:00:00 +0000

Build with AI Intro to Function Calling with Gemini by Rabimba Karanjai GDE 2024 03 20 18 07 GMT 5

Wed, 20 Mar 2024 10:00:00 +0000

Hands-on Workshop: Develop an App with Vertex AI Gemini 1.0 Pro

Wed, 20 Mar 2024 10:00:00 +0000

Privacy aware Zero Knowledge Login using Oauth2 and Passkey

Wed, 20 Mar 2024 10:00:00 +0000

LookALike: Human Mimicry based collaborative decision making

Sat, 16 Mar 2024 00:00:00 +0000

Decentralized FaaS over Multi-Clouds

Fri, 01 Mar 2024 00:00:00 +0000

Give your web apps superpower with Generative AI and Mediapipe

Wed, 28 Feb 2024 10:00:00 +0000

LLM Applications components and design patterns Hands on Workshop

Tue, 20 Feb 2024 10:00:00 +0000

Blockchain & Decentralized Systems

Mon, 01 Jan 2024 00:00:00 +0000

This research thread represents my largest body of work, spanning smart contract security, decentralized infrastructure, and cross-chain interoperability. Highlights include:

Securing Multi-Chain Ecosystems — A unified agent-based framework for vulnerability detection in Solidity and Move smart contracts (AIWare 2025).
DIaC (Decentralized Infrastructure as Code) — Re-imagining infrastructure management using blockchain (IEEE TNSM 2023).
Smart Contract Translation — Automated translation between smart contract languages using LLMs (FSE 2024).
VerifyGen-X — Cross-chain smart contract generation with verification (NeurIPS 2026, under review).
Ransomware 3.0 — Novel mitigation using proof-of-decryptability smart contracts (IEEE ICBC 2025).
FaaS for dApps — Decentralized Function-as-a-Service for emerging applications (IEEE ICBC 2023).
Conditional Cryptocurrency — Privacy-preserving conditional transactions (IEEE ICBC 2021).

Supported by three consecutive Sui Foundation Academic Research Awards ($25,000 each).

Edge Computing & Trusted Execution

Mon, 01 Jan 2024 00:00:00 +0000

This research area investigates how to bring secure, verifiable computation to resource-constrained edge devices:

Trusted Inference at the Edge — Combining smart contracts with trusted execution environments for verifiable edge inference (IEEE ICBC 2024).
Blockchain + TEE — Lessons learned from applying TEEs in blockchain applications, with implications for future secure systems.
Supporting Heterogeneous Infrastructure — Protecting critical infrastructure across diverse computing environments (AsiaCCS 2023).
AI-Based Personalized Interventions — Deploying AI models for health applications on edge devices (SynBio 2025).

This work bridges the gap between the security guarantees of centralized systems and the autonomy of decentralized, edge-deployed applications.

On Device Generative AI: Building your own Dall-E in the browser, welcome WebGPU

Wed, 08 Nov 2023 10:00:00 +0000

An Empirical Study of AI-based Smart Contract Creation

Thu, 02 Nov 2023 10:00:00 +0000

DIaC: Re-imagining Decentralized Infrastructure As Code using Blockchain

Wed, 01 Nov 2023 00:00:00 +0000

Experience

Tue, 24 Oct 2023 00:00:00 +0000

Who is Smarter? An Empirical Study of AI-based Smart Contract Creation

Sun, 01 Oct 2023 00:00:00 +0000

DeepSpeech: A Journey to <10% Word Error Rate

Fri, 22 Sep 2023 10:00:00 +0000

Cross Chain Bribery Contracts: Majority vs Mighty Minority

Thu, 08 Jun 2023 00:00:00 +0000

Decentralized Machine Learning Governance: Overview, Opportunities, and Research Challenges

Mon, 01 May 2023 00:00:00 +0000

DeFaaS: Decentralized Function-as-a-Service for Emerging dApps and Web

Mon, 01 May 2023 00:00:00 +0000

DHTee: Decentralized Infrastructure for Heterogeneous TEE

Mon, 01 May 2023 00:00:00 +0000

Supporting Heterogeneous TEE for Critical Infrastructure Protection

Mon, 01 May 2023 00:00:00 +0000

Curious case of Cisco AnyConnect and WSL2

Fri, 20 Jan 2023 00:00:00 +0000

Targeted Phishing Campaigns using Large Scale Language Models

Fri, 30 Dec 2022 00:00:00 +0000

North America Connect 2022 ｜ Day 2 GDE Stage Rabimba

Sun, 04 Dec 2022 10:00:00 +0000

DeepSpeech Architecture at North Carolina DevFest 2022 at Chapel Hill

Wed, 30 Nov 2022 10:00:00 +0000

Fpswap: Fair and Privacy Friendly Swap of Digital Assets on Blockchain

Tue, 21 Jun 2022 00:00:00 +0000

Decentralized Application Infrastructures as Smart Contract Codes

Sun, 01 May 2022 00:00:00 +0000

Immersive Payment: Second Update

Wed, 12 Jan 2022 00:00:00 +0000

Privacy preserving event based transaction system in a decentralized environment

Wed, 01 Dec 2021 00:00:00 +0000

Lessons Learned from Blockchain Applications of Trusted Execution Environments and Implications

Mon, 01 Nov 2021 00:00:00 +0000

An event driven framework for smart contract execution

Tue, 01 Jun 2021 00:00:00 +0000

Mobile multi-party digitally signed documents and techniques for using these allowing detection of tamper

Tue, 01 Jun 2021 00:00:00 +0000

Immersive Payment: First Update

Tue, 04 May 2021 00:00:00 +0000

On Conditional Cryptocurrency With Privacy

Sat, 01 May 2021 00:00:00 +0000

Road to the Grant : Immersive Payment

Fri, 02 Oct 2020 00:00:00 +0000

State of WebXR: What do You Need to Know Today? - Rabimba Karanjai - NDC Sydney 2020

Tue, 01 Sep 2020 10:00:00 +0000

Attack of the Clones (Part 1): Drishti and vMeet

Tue, 28 Jul 2020 00:00:00 +0000

Handling Web Server file permission: The Last Guide

Wed, 03 Jun 2020 00:00:00 +0000

Help finding a cure for COVID19: Set up Folding@Home

Tue, 24 Mar 2020 00:00:00 +0000

Building Decentralized Social Virtual Reality using WebXR on your browser

Sun, 02 Feb 2020 10:00:00 +0000

FOSDEM 2020 - Building Decentralized Social Virtual Reality using WebXR on your browser

Sun, 02 Feb 2020 10:00:00 +0000

Testing Web VR/AR Mixed Reality Applications: What you need to know by Rabimba Karanjai #SeConf2020

Wed, 15 Jan 2020 10:00:00 +0000

Mozilla TS Paris Meetup Talk : Introducing jARvis

Thu, 09 Jan 2020 10:00:00 +0000

Voice Driven VR

Mon, 04 Nov 2019 10:00:00 +0000

DevFest Ranchi 2019 – Rabimba Karanjai - DeepSpeech: A Journey to less than 10% Word Error Rate

Fri, 04 Oct 2019 10:00:00 +0000

Blocking Communication - A perspective from India : The Beginning

Tue, 06 Aug 2019 00:00:00 +0000

Blocking Communication - Breaking Out

Tue, 06 Aug 2019 00:00:00 +0000

Visualizing large scale Uber Movement Data

Tue, 27 Nov 2018 00:00:00 +0000

Data Driven Innovation

Wed, 10 Oct 2018 10:00:00 +0000

DevDay Nang

Thu, 20 Sep 2018 10:00:00 +0000

University of Texas at Dallas Welcome Week Tech Talk

Wed, 22 Aug 2018 10:00:00 +0000

O'Reilly OSCON 2018 Talk

Wed, 18 Jul 2018 10:00:00 +0000

O'Reilly OSCON 2018 Tutorial

Tue, 17 Jul 2018 10:00:00 +0000

RevolutionConf

Thu, 07 Jun 2018 10:00:00 +0000

Visualize your Data in a 3D VR world using A-Frame in WebVR

Sun, 20 May 2018 10:00:00 +0000

Fullstack London

Wed, 16 May 2018 10:00:00 +0000

Optimizing Web Virtual Reality

Tue, 01 May 2018 00:00:00 +0000

State of WebVR, A-Frame and Our Foray Into Web Mixed Reality : Rabimba Karanjai - Mozilla

Thu, 19 Apr 2018 10:00:00 +0000

DevWeek NYC

Thu, 15 Mar 2018 10:00:00 +0000

DeveloperWeek Austin

Wed, 07 Feb 2018 10:00:00 +0000

WebVR & Web Technologies

Mon, 01 Jan 2018 00:00:00 +0000

During my Mozilla Research Fellowship and MS at Rice University, I worked on making virtual reality accessible through web browsers:

Optimizing VR on WebGL — Research on improving parallelism and rendering performance for WebVR applications in Firefox (MS Thesis, Rice University).
Mozilla Research Fellowship — Conducted in-depth research to optimize VR performance in the browser, contributing to Firefox’s WebVR capabilities.
Google Developer Expert — Recognized expertise in Web Technologies, contributing to the broader web platform community.

This work laid the foundation for my continued interest in bringing powerful computing capabilities to resource-constrained environments, whether that’s a browser or an edge device.

Mexico City Mobile Day

Wed, 15 Nov 2017 10:00:00 +0000

Rabimba Karanjai: VR for Humans Build your world using WebVR and aframe | Mobile day 2017

Wed, 15 Nov 2017 10:00:00 +0000

Google Chrome Dev Summit

Wed, 01 Nov 2017 10:00:00 +0000

Turning sensors into signals

Sun, 15 Oct 2017 10:00:00 +0000

Hardening Your IoT Endpoints: A Preventive Toolkit

Mon, 25 Sep 2017 10:00:00 +0000

LinuxCon 2017

Mon, 25 Sep 2017 10:00:00 +0000

Singapore Leadership Summit: Connected Devices and Mozilla TechSpeaker

Wed, 20 Sep 2017 10:00:00 +0000

Kansas City Developer Conference 2017

Wed, 28 Jun 2017 10:00:00 +0000

Open Source Bridge 2017

Wed, 21 Jun 2017 10:00:00 +0000

Optimizing Web Virtual Reality

Thu, 15 Jun 2017 10:00:00 +0000

MozLondon: Connected Devices Team

Wed, 14 Jun 2017 10:00:00 +0000

ACM SIGGRAPH Web3D

Wed, 07 Jun 2017 10:00:00 +0000

SecurityPI: IronClad your Raspberry PI

Mon, 15 May 2017 10:00:00 +0000

State of WebVR & aframe: Yesterday, Today, and Tomorrow Beyond Horizon

Thu, 20 Apr 2017 10:00:00 +0000

Silicon Valley Virtual Reality

Sat, 15 Apr 2017 10:00:00 +0000

LibrePlanet 2017

Sat, 25 Mar 2017 10:00:00 +0000

Securi-Tay 2017

Fri, 10 Mar 2017 10:00:00 +0000

DeveloperWeek 2017

Wed, 15 Feb 2017 10:00:00 +0000

Linux Foundation OpenIoT Summit 2017

Wed, 15 Feb 2017 10:00:00 +0000

Building Your World in WebVR

Mon, 13 Feb 2017 10:00:00 +0000

Are you well? When connected devices know more about you

Sun, 30 Oct 2016 10:00:00 +0000

Painting with Virtual Reality and A-Painter

Sat, 29 Oct 2016 10:00:00 +0000

Build on WebVR and touch to interact! Come Augmented Reality for the web!

Fri, 28 Oct 2016 10:00:00 +0000

GraphicalWeb 2016

Wed, 12 Oct 2016 10:00:00 +0000

ViewSource Berlin (Game Demo and VR Booth)

Thu, 15 Sep 2016 10:00:00 +0000

MozTechSpeaker Berlin Meetup

Tue, 13 Sep 2016 10:00:00 +0000

BrazilJS VR Talk

Sat, 20 Aug 2016 10:00:00 +0000

OpenSource Bridge 2016

Wed, 22 Jun 2016 10:00:00 +0000

OpenSource HongKong

Sat, 14 Nov 2015 10:00:00 +0000

Rabimba Karanjai - A self learning word prediction module for handling multilingual input

Thu, 24 Sep 2015 10:00:00 +0000

JSFoo 2015

Fri, 18 Sep 2015 10:00:00 +0000

Open Source Bridge 2015

Wed, 24 Jun 2015 10:00:00 +0000

OSB 2015 - Building a self learning word prediction and auto-correct module for FirefoxOS

Wed, 24 Jun 2015 10:00:00 +0000

WikiConfUSA 2014

Sat, 07 Jun 2014 10:00:00 +0000

QA Robotics at Confluence 2012

Wed, 20 Jun 2012 10:00:00 +0000