Causal Criticality of Layers in Chain-of-Thought

Late layers matter. A probe into Qwen2-1.5B with activation patching, a logit lens, and targeted ablations found that the mid-to-late layers — especially around layer 24 — often synthesize intermediate chain-of-thought steps into the final answer.

December 14, 2025 · 5 min · Barshan Mondal

Before We Hop Onto TRANSFORMERS

Understanding The Transformer.(You Don’t Wanna Skip This)

November 19, 2025 · 5 min · Barshan Mondal

How does ChatGPT answer everything we ever ask

How Retrieval-Augmented Generation (RAG) helps LLMs give accurate, up-to-date, and grounded answers without hallucinating.

October 24, 2025 · 3 min · Barshan Mondal

Got Bored... Tried n8n

How I automated my job search so I can focus on applying.

October 12, 2025 · 1 min · Barshan Mondal