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Wu Shixiong's Large Model Academy
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Wu Shixiong's Large Model Academy

We continuously share large‑model know‑how, helping you master core skills—LLM, RAG, fine‑tuning, deployment—from zero to job offer, tailored for career‑switchers, autumn recruiters, and those seeking stable large‑model positions.

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Recent Articles

Latest from Wu Shixiong's Large Model Academy

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Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
Jun 23, 2026 · Artificial Intelligence

When RAG Returns Junk, Why a LLM Can’t Fix It – Building an Agentic RAG

The article examines why traditional single‑step Retrieval‑Augmented Generation fails when retrieved passages are irrelevant, outlines the three fundamental flaws of that pipeline, and presents the Agentic RAG paradigm—turning retrieval into a reusable tool with planning, reflection, and decision loops, illustrated with code, interview scenarios, and practical deployment tips.

AIAgentic RAGKnowledge Base
0 likes · 32 min read
When RAG Returns Junk, Why a LLM Can’t Fix It – Building an Agentic RAG
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
Jun 20, 2026 · Artificial Intelligence

How I Burned $15K on Claude Code in a Month and Finally Mastered Skill Writing

After spending nearly $15,000 on Claude Code and Codex in a single month, the author discovered that most of his dozens of skills were never invoked, learned the progressive‑disclosure mechanism, rewrote skill descriptions, added verification steps, organized skills as folders with scripts and hooks, and now knows how to identify and optimize the truly useful skills.

AI AgentsClaude Codeperformance optimization
0 likes · 19 min read
How I Burned $15K on Claude Code in a Month and Finally Mastered Skill Writing
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
May 26, 2026 · Artificial Intelligence

Why Anthropic Caps SKILL.md at Under 5K Tokens and How to Structure Yours

The article explains Anthropic's official 5K‑token limit for SKILL.md files, breaks down the three‑level loading architecture, demonstrates progressive disclosure with concrete token calculations, and provides a step‑by‑step refactoring guide that reduces token usage while improving skill accuracy.

AI EngineeringAnthropicClaude
0 likes · 16 min read
Why Anthropic Caps SKILL.md at Under 5K Tokens and How to Structure Yours
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
May 13, 2026 · Artificial Intelligence

How to Explain a Jump from 71% to 94% Tool‑Calling Accuracy in a JD Interview

The article walks through a JD interview scenario where a candidate explains how a tool‑calling accuracy metric rose from 71% to 94% by detailing the full SFT data‑engineering pipeline, teacher‑model trajectory generation, quality validation, evaluation methodology, and interview‑ready talking points.

Data EngineeringFunction CallingInterview Preparation
0 likes · 19 min read
How to Explain a Jump from 71% to 94% Tool‑Calling Accuracy in a JD Interview
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
Apr 30, 2026 · Artificial Intelligence

When Is Claude Code’s Memory Injected into system_prompt? Interview Insight

The article explains that Claude Code loads persisted memory once at REPL startup via _build_system(), inserts it as the 10th segment of system_prompt, enforces a 200‑line limit on MEMORY.md, deliberately avoids side‑effects in get_memory_dir(), and only refreshes the prompt with the /model command.

Claude CodeInterview PreparationLLM
0 likes · 11 min read
When Is Claude Code’s Memory Injected into system_prompt? Interview Insight
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
Apr 29, 2026 · Interview Experience

ByteDance Interviewer Asks: What Rank r Do You Use for LoRA? I Said 64—He Said I'm Wasting GPU Memory

The article examines a common interview scenario where candidates are asked about LoRA rank selection, outlines two typical mistakes—guessing or staying silent—and presents a three‑step strategy of honest boundary setting, logical derivation, and asking a focused question, illustrating the approach with concrete LoRA calculations and a vLLM case study.

AI EngineeringLoRAinterview strategy
0 likes · 13 min read
ByteDance Interviewer Asks: What Rank r Do You Use for LoRA? I Said 64—He Said I'm Wasting GPU Memory
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
Apr 28, 2026 · Artificial Intelligence

Why Bigger Context Fails for Deep Research Agents and How IterResearch Fixes It

Interviewers point out that simply enlarging the LLM’s context window cannot prevent forgetting early conclusions in long‑step Deep Research tasks; the article explains the ReAct context issues, introduces the IterResearch framework with evolving reports, and compares its accuracy, cost, and scalability against ReAct and ReSum.

Deep ResearchIterResearchLLM
0 likes · 17 min read
Why Bigger Context Fails for Deep Research Agents and How IterResearch Fixes It
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
Apr 27, 2026 · Artificial Intelligence

Can Your RAG Pass the Demo? Scaling to 5,000 Docs for Reliable Answers

The article walks through the practical challenges of turning a RAG demo into a production system for 5,000 insurance documents, covering knowledge‑base chunking, embedding model selection, recall‑threshold tuning, hybrid vector‑BM25 retrieval, intent‑aware query routing, prompt constraints, confidence scoring, and operational scaling, with concrete metrics and code examples.

EmbeddingRAGhybrid retrieval
0 likes · 16 min read
Can Your RAG Pass the Demo? Scaling to 5,000 Docs for Reliable Answers
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
Apr 23, 2026 · Industry Insights

Should You Take a Tencent AI Internship? Key Factors to Consider

The article examines whether a Tencent AI internship is worth pursuing by analyzing the program’s growth stage, unique user ecosystem, mentorship structure, compensation model, and early‑year advantages, illustrated with real intern case studies, to help students decide what they aim to gain from the experience.

AI ResearchAI internshipTencent
0 likes · 14 min read
Should You Take a Tencent AI Internship? Key Factors to Consider