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Qin Liu's Blog

My notes on vector databases, RAG, LLMs and AI.

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Exploring AI Memory Architectures (Part 3): From Prototype to Blueprint

1. Connecting Blueprints and Prototypes In the first two posts, we saw an idea evolve from a micro-architecture to a macro-system. Memory³ was like a detailed chip schematic, defining an efficient "memory circuit." MemOS was like a grand urban plan, ...

Exploring AI Memory Architectures (Part 2): MemOS Framework

Paper: MemOS: A Memory OS for AI SystemLink: https://arxiv.org/abs/2507.03724v2GitHub: https://github.com/MemTensor/MemOS 1. From Data Structure to Operating System In the last post, we saw how Memory³ designed an efficient "memory data structure." B...

Exploring AI Memory Architectures (Part 1): A Deep Dive into Memory³

Paper: Memory³: Language Modeling with Explicit MemoryLink: https://arxiv.org/abs/2407.01178v1 1. The Third Path for Knowledge Large language models learn in two ways. The first is parametric memory. Knowledge gets encoded into the model’s billions o...

Mem0: How Three Prompts Created a Viral AI Memory Layer

In the rapidly evolving world of artificial intelligence, Mem0 has emerged as a standout project, garnering over 19,000 stars on GitHub. This innovative system aims to enhance AI's ability to learn continuously and adapt to individual user needs thro...

Filtered Vector Search: A Key Technology in RAG Systems

Basically, in an Retrieval-Augmented Generation (RAG) system, documents (including texts, PDFs, Word, PPTs, etc.) are initially processed through chunking to extract embedding vectors, which are then stored and indexed in a vector database. When a us...

Check Out the Latest Vector Database Comparison Matrix

Hey everyone, Qin Liu here! I'm super excited to share something I've been working on – a brand-new comparison matrix for vector databases. You can find it over at Comparison of Vector Databases and the code's up on GitHub. This isn't just any compar...