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HNSW Explained: How Vector Search Finds a Needle in a Billion-Vector Haystack
Hierarchical Navigable Small World (HNSW) is a state-of-the-art algorithm used for an approximate search of nearest neighbours.

Nagesh Singh Chauhan
4 days ago10 min read


AI Agent Evaluation: A Practical Guide
From pass@k to prompt injection: everything you need to evaluate an AI agent before it touches production.

Nagesh Singh Chauhan
Oct 2915 min read


A2A Protocol in Agentic AI: How AI Agents Discover, Delegate, and Collaborate
This article examines A2A from a systems-engineering perspective: its architecture, communication model, protocol objects, task lifecycle, relationship with MCP, practical implementation patterns, limitations, and security requirements.

Nagesh Singh Chauhan
Oct 2315 min read


Harness²: How Google Is Rethinking AI Agents to Solve More Complex Problems
Instead of relying exclusively on a more powerful model, can we make the system surrounding a model progressively better at solving different problems?

Nagesh Singh Chauhan
Oct 1918 min read


Proximal Policy Optimization(PPO)
Proximal Policy Optimization (PPO) was introduced in 2017 for simulated robots and Atari games, it became the optimization engine behind reinforcement learning from human feedback (RLHF) for large language models.

Nagesh Singh Chauhan
Oct 916 min read


Deep Agents Demystified: The Architecture of Complex AI
A practical deep dive into planning, subagents, context engineering, memory, tools, and autonomous execution.

Nagesh Singh Chauhan
Sep 2617 min read


World Models: The Next Frontier of Artificial Intelligence
How AI is evolving from predicting patterns to understanding, simulating, and acting in the world.

Nagesh Singh Chauhan
Sep 1913 min read


Self-Improving AI Agents: Building Agents That Learn From Experience
From agents that simply act to agents that learn, adapt, and continuously improve from their own experience.

Nagesh Singh Chauhan
Sep 1811 min read


Build a Multi-Agent AI Personal Learning Assistant Using LangGraph
How eight specialised AI agents, two LangGraph state machines, a Tavily MCP search pipeline, and the 40-year-old SM-2 memory algorithm combine to create a tutor that gets smarter every session.

Nagesh Singh Chauhan
Jun 2610 min read


The Anatomy of an Agent Harness
At its core, an agent harness is the execution runtime that governs how an AI agent behaves across an entire lifecycle of interaction

Nagesh Singh Chauhan
Jun 66 min read


Introduction to Ollama
Running Large Language Models Locally, Simply and Securely

Nagesh Singh Chauhan
Jan 246 min read


Building Long-Term Memory in AI Agents
Imagine an AI that goes beyond answering questions—one that remembers what matters to you, learns from each interaction, and continuously adapts to become more intuitive, relevant, and personalized over time.

Nagesh Singh Chauhan
Jan 1612 min read


Quantization in Large Language Models(LLMs)
Demystifying the Compression of Large Language Models(LLMs)

Nagesh Singh Chauhan
Jan 99 min read


Small Language Models(SLMs) in Modern AI Engineering
Large Language Models (LLMs) like GPT-5, Gemini, and Claude have demonstrated remarkable reasoning and generative capabilities. However, their scale comes with trade-offs: high latency, massive compute requirements, privacy concerns, and limited deployability on edge devices.This has led to the rise of Small Language Models (SLMs)—compact, efficient models designed to deliver strong performance under tight resource constraints.

Nagesh Singh Chauhan
Jan 714 min read


ReAct Agents Explained: A Step-by-Step Implementation Using LangGraph
A hands-on walkthrough of a hotel cancellation agent using ReAct and LangGraph. Learn how reasoning, tools, memory, and safety come together in a real production scenario.

Nagesh Singh Chauhan
Jan 411 min read


mHC: Manifold-Constrained Hyper-Connections by DeepSeek
Manifold-Constrained Hyper-Connections (mHC), introduced by DeepSeek, propose a principled evolution of residual connectivity—one that preserves stability while dramatically increasing expressive power. This innovation could redefine how future large language models (LLMs) are trained and architected.

Nagesh Singh Chauhan
Jan 36 min read


LLMs in Self-Driving Cars: Teaching Machines to Understand the Road Like Humans
How LLMs bring reasoning, context, and human understanding to the heart of autonomous driving.

Nagesh Singh Chauhan
Jan 110 min read


AI Guardrails: Making Autonomous Agents Safe for the Enterprise
AI guardrails are the policies, technical controls, and monitoring frameworks that constrain and guide an AI agent’s behavior to prevent harmful, unsafe, or unintended outcomes. They act like highway barriers that keep a car on track: they do not slow progress but reduce the risk of veering off into dangerous territory.

Nagesh Singh Chauhan
Dec 29, 202510 min read


Top 23 types of RAG Architectures
A practical guide to the most important Retrieval-Augmented Generation patterns—explained clearly, compared simply, and ready to apply in real-world LLM systems.

Nagesh Singh Chauhan
Dec 28, 202531 min read


Context Engineering: From Better Prompts to Better Thinking
Designing the right context is what transforms powerful language models into reliable, grounded, and scalable AI systems. Context engineering shifts the focus from crafting better prompts to engineering how models see, reason, and act.

Nagesh Singh Chauhan
Dec 25, 202515 min read
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