← Back to KB Overview

AI & Machine Learning (AI/ML) Knowledge Graph

This is a system-level skill tree dynamically generated based on your cloud Memory. By mastering these knowledge nodes, you will build a solid bridge to roles like AS, MLE, and RS.

Get Full Cloud Knowledge System πŸš€
AS
MLE
RS
Scanning Memory to build graph...
🏒

Target Company Interview Guides

Field guides for top-tier companies and core specialized roles. Subscribed premium users can query local/cloud agents with verified prompts to initiate tailored preparation loops.

♾️
♾️

Meta Interview Blueprint

Covered Roles

MLE (IC5/IC6) - Recommender SystemsApplied Scientist - Computer VisionProduction Engineer (AI)

Core Focus Area

Heavily focuses on large-scale recommendation system architecture (Sparse Feature Engineering, DLRM), CTR prediction, PyTorch operator optimization, and large-scale model parallelization. System design emphasizes engineering deployment and high availability.

Preparation Hacks

  • Master Multi-Task Learning (MTL) parameter sharing schemes in recommendation models.
  • Understand Meta's DLRM architecture and its optimization details for embedding table lookups.
  • Prepare behavioral interview cases related to cross-team collaboration and driving large initiatives.

πŸ€– Agent Prompt Command

πŸ”’ Premium Only

The full blueprint, prompt commands, and reference files for this company are locked. Subscribe to Premium to unlock full resources and interact with local MCP Agent.

πŸ”‘ Subscribe to Unlock Now
πŸ“…

Guides & Materials Log

2026-06-24MLE (L5) (v2.1)
πŸ”Google

Updated 'Google MLE System Design Guide': Added communication cost formulas for multi-GPU training and FSDP distributed memory optimization schemes.

2026-06-22Research Scientist (v1.3)
🧠OpenAI

Updated 'OpenAI Interview Guide': Added offline derivation analysis of Generalized Advantage Estimation (GAE) inside the RLHF PPO loop.

2026-06-20MLE (IC5) (v2.0)
♾️Meta

Added 'Meta Recommender Systems in Production': Explores loss balancing formulas for MMOE multi-task networks under extreme positive feedback sparsity.

2026-06-18MLE (Ads) (v1.2)
🏒TikTok

Updated 'Short Video Rec Retrieval Guide': Added caching and real-time sync strategies for two-tower vector recall under trillion-parameter sparse embeddings.

2026-06-14Applied Scientist (v1.0)
♾️Meta

Updated 'Multimodal Vision-Language Alignment': Added latest VLM fine-tuning and performance balance case study.

Local Knowledge Base Architecture Guide (Local Template Modules)

Coupled with the cloud skill tree above, when you initialize the knowledge base locally using MCP, the following 6 core modules will be generated automatically. You can use these to build your exclusive local knowledge engine. Click on the cards to expand domain-specific insights.

🏒

Target Companies

Expand Details

Used for organizing background checks, core businesses, tech stacks, and past interview experiences of your target companies. E.g., categorize OpenAI or Google's interview styles.

β–  AI Native Unicornse.g., OpenAI, Anthropic. Interviews focus on extremely strong understanding of underlying systems and innovation capabilities.
β–  Core AI Teams in Tech Giantse.g., Meta (FAIR), Google (DeepMind). Focuses on Infra optimization and Scaling under massive data.
β–  Traditional Internet & Autonomous DrivingFocuses on specific business landing, like recommendation systems, ad algorithms, perception, and planning & control algorithms.
πŸ’Ό

Role Analysis

Expand Details

Displays Job Descriptions, capability models, and common question distributions for target roles (e.g., AS, MLE, DS).

β–  MLE (Machine Learning Engineer)Focuses on engineering落地, model deployment, inference optimization (TensorRT, CUDA), and ML System Design.
β–  AS (Applied Scientist)Focuses on converting business pain points, algorithm selection & innovation, paper reading, and experimental design.
β–  AI EngineerEmerging role, focusing on building application layers using Large Models (LLM/RAG/Agents), Prompt Engineering, and API deep integration.
β–  RS (Research Scientist)Focuses on underlying theoretical breakthroughs, publishing top-tier papers, and proposing new model architectures (like new Transformer variants).
β–  RecSys EngineerFocuses on high-concurrency, massive-data recall and ranking systems, deeply involved in CTR prediction and user profiling.
🎀

Interview Records

Expand Details

Track and record practical post-mortems of every real interview. Includes interviewer backgrounds, difficult questions, and feedback summaries for self-improvement.

β–  Interview Post-mortem TemplateIncludes interviewer background, original questions of each round, my answers, and areas for improvement.
β–  Recording/Transcript SummaryFeed interview transcripts directly via MCP to the Agent to extract summaries automatically.
πŸ› οΈ

Core Projects

Expand Details

Deeply analyze your personal projects using the STAR principle, document system architecture trade-offs, and prepare for resume deep dives.

β–  S (Situation)Business background and core pain point analysis.
β–  T (Task)Expected quantitative goals and metrics.
β–  A (Action)Tech stack trade-offs, overcoming the biggest technical difficulties.
β–  R (Result)Final quantitative performance and impact.
β–  Deep Dive MockIf traffic is 10x larger, how would you redesign the system?
πŸ“

Resumes

Expand Details

Specifically used to track and update your different resume versions (e.g., General, Algorithm-specific) and record Bullet Points highlight materials daily.

β–  Multi-version MaintenanceMaintain custom resume versions for different directions (e.g., Engineering-focused vs. Research-focused).
β–  Highlight Material RepoRecord Bullet Points and highlight materials from daily work, avoiding writer's block when updating resumes.
πŸ“š

Tech Fundamentals

Expand Details

Contains your overall knowledge framework. From data structures and high-concurrency system design to AI frontier knowledge (like LLM, RAG), accumulate systematic notes here.

β–  Math & FundamentalsLinear Algebra, Probability, Optimization Algorithms (Gradient Descent).
β–  Deep LearningCNN, RNN, Transformer architectural details, Attention mechanisms.
β–  Large Models SpecialSFT, RLHF, DPO, and various distributed training mechanisms (FSDP, DeepSpeed).