Topic Clusters
Articles organized by topic cluster: AI systems, machine learning, knowledge engineering, product development, research, economics, optimization, and more. Each cluster gathers in-depth writing on a single area.
Knowledge Engineering & Infrastructure
Knowledge graphs, vector databases, information retrieval, semantic search, and knowledge system architectures.
12 articles
A Neural Router for My Knowledge Vault
Apr 11, 2026· neural-routing, knowledge-vault
I Ran Autoresearch on My Own Website
Apr 5, 2026· autoresearch, performance
ClaudeSearch Day 2: 3.76 → 4.35, 175 Improvements, Self-Healing Validated
Mar 20, 2026· autoresearch, automation
Overnight Results: From 3.76 to 4.35
Mar 20, 2026· vault, autoresearch
vault-search: Building Hybrid Retrieval That Actually Works on Local Hardware
Mar 20, 2026· search, retrieval
Vault Autoresearch: A Personal AI Learns From Itself
Mar 19, 2026· autoresearch, local-models
Building a Knowledge Vault: How I Use Claude to Research 80 Topics in a Day
Mar 13, 2026· knowledge-management, multi-agent
The Knowledge Engine: 10,800+ Notes Built by AI Agents
Mar 11, 2026· knowledge-engine, automation
Building a Multi-Agent Research Pipeline — Benchmarked on DRB
Mar 11, 2026· research, multi-agent
Building a Fashion Trend Intelligence Pipeline for $3/Month
Feb 25, 2026· automation, local-gpu
Reweave: Teaching Your Vault to Link Itself
Feb 20, 2026· obsidian, semantic-search
Zero-Cost Automation: 16 Tasks on a Local GPU
Feb 20, 2026· automation, local-gpu
AI Systems & Agents
Artificial intelligence systems, autonomous agents, multi-agent architectures, and intelligent system design.
4 articles
How a 4B Model Beat a 7B: Fine-Tuning Bake-off on 16GB VRAM
Mar 15, 2026· fine-tuning, qlora
7B QLoRA Fine-Tuning on AMD RDNA4: The HQQ Path
Mar 13, 2026· gpu, qlora
Local Model Shootout: Finding the Right LLM for Every Task
Feb 22, 2026· ai, local-llm
Vulkan Beats ROCm: +20% LLM Inference on RDNA 4
Feb 22, 2026· gpu, vulkan
Machine Learning & Fine-Tuning
Fine-tuning, local LLM optimization, inference, model training, and on-device ML systems.
0 articles
No articles yet in this cluster.
Autonomous Agents
Agent architectures, decision-making systems, planning, reasoning, and multi-agent collaboration.
0 articles
No articles yet in this cluster.
Local AI & Inference
Running language models locally, inference optimization, GPU efficiency, and consumer hardware ML.
0 articles
No articles yet in this cluster.
Systems & Performance Optimization
Algorithm optimization, performance tuning, computational efficiency, and system resource management.
0 articles
No articles yet in this cluster.
Economics & Finance
Economic theory, financial systems, market dynamics, incentive mechanisms, and economic analysis.
4 articles
Path Dependence: Why Historical Accidents Shape Markets
Mar 26, 2026· economics, technology
How Individual Incentives Create Population Equilibrium
Mar 26, 2026· game theory, evolutionary dynamics
Bank Runs and Gossip Protocols: Why Cascading Failures Look the Same Everywhere
Mar 13, 2026· distributed-systems, economics
Poverty Traps Are Bistable Systems: A Mathematical Lens on Development Economics
Mar 13, 2026· economics, dynamical-systems
SaaS & Product Development
Building and shipping production SaaS platforms, product strategy, and business technology.
6 articles
Building RepRewards: The Engineering Behind a Gamified Fitness Tracker
Mar 20, 2026· convex, react
MagicLog: Building a Construction RFC/Submittal Tracker in 5 Days
Mar 13, 2026· magiclog, next.js
Linesheet Ships Eight Features in One Commit: From Buyer Segments to PO PDFs
Mar 8, 2026· linesheet, convex
Linesheet Security Hardening: Securing Convex Functions
Feb 23, 2026· convex, security
Shipping AI Image Generation While Cutting 2MB from the Bundle
Feb 20, 2026· next.js, convex
Linesheet Bundle Diet: Cutting 2MB from Initial Load
Feb 19, 2026· next.js, performance
Research & Scientific Methods
Research methodology, scientific findings, academic insights, and evidence-based analysis.
27 articles
The Science of Spaced Repetition: Why Spacing Your Learning Matters More Than You Think
Apr 5, 2026· learning, spaced-repetition
How Psychology Explains Sales Pipeline Performance
Mar 28, 2026· sales, psychology
The Forensic Principle: Why Accountability Requires Irreversible Evidence
Mar 26, 2026· security, systems
Attention and Consciousness: Two Systems, Not One
Mar 26, 2026· neuroscience, consciousness
Why Systems Collapse Suddenly: The Mathematics of Catastrophe
Mar 26, 2026· mathematics, dynamical-systems
Why Water and Iron Have the Same Critical Exponents
Mar 26, 2026· physics, complexity
How the Brain Forgets Fear: The Prefrontal Circuit That Extinction Therapy Targets
Mar 26, 2026· neuroscience, anxiety
The Mechanics of Information Retrieval: Ranking Relevance at Scale
Mar 26, 2026· information-retrieval, search-engine
Evaluating Language Models for Low-Resource Languages: Beyond BLEU
Mar 26, 2026· NLP, evaluation
Why Mechanism Design Can't Escape Social Choice Impossibility
Mar 26, 2026· economics, mechanism-design
Fixed Effects vs. Random Effects: When to Use What in Panel Econometrics
Mar 26, 2026· econometrics, causal-inference
Why Different Things Behave Alike: Phase Transitions and Computational Complexity
Mar 26, 2026· complexity, physics
The Quantum Brain: How Dopamine Encodes Superposition
Mar 26, 2026· neuroscience, quantum-mechanics
One Math, Four Domains: How Stochastic Processes Unify Finance, Systems, Physics, and Biology
Mar 26, 2026· math, stochastic-processes
Why Chronic Stress Breaks Threat Learning
Mar 26, 2026· neuroscience, stress
Why Chronic Stress Breaks Your Decisions
Mar 26, 2026· neuroscience, stress
What Arrow's Impossibility Theorem Teaches Us About Distributed Systems
Mar 13, 2026· distributed-systems, economics
TCP Congestion Control and Exchange Rate Overshooting: Dornbusch Meets Van Jacobson
Mar 13, 2026· tcp, economics
Fine-Tuning Local Models: 10% to 100% Format Compliance in 5 Minutes
Mar 11, 2026· fine-tuning, local-gpu
Actor-Critic Methods: The Mechanics of Variance Reduction in RL
Mar 10, 2026· reinforcement-learning, actor-critic
Building a Knowledge Engine with Spaced Repetition and Client-Side Encryption
Mar 5, 2026· learning, react
Polishing Inventory Intelligence: Shared Badges, Single-Pass Queries, and Validation
Mar 1, 2026· linesheet, inventory
Private AI for Legal Work
Feb 25, 2026· ai, local-gpu
What $1.09 Trillion in Medicaid Spending Actually Looks Like
Feb 22, 2026· data, medicaid
The Supreme Court Just Struck Down Trump's Tariffs. Here's What Actually Happens Next.
Feb 21, 2026· tariffs, supreme-court
Building blog.vachsark.com in One Session
Feb 20, 2026· react, mdx
Local AI Optimization: From 148ms to 85ms
Feb 19, 2026· ai, optimization
Security & Privacy
Computer security, privacy protection, cryptography, and secure system design.
0 articles
No articles yet in this cluster.