JosephWang
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Thoughts on data science, machine learning, and research

Dec 16, 2025
: Solidity, Blockchain

Building Article Subscription Contracts in Solidity

The goal of this post is to design the on-chain payment and settlement layer for such a product, not a full dApp. We focus on how different article...
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Dec 11, 2025
: Solidity, Blockchain

Building a Simple Pay-as-You-Go Service in Solidity

I’m learning Solidity and wanted to apply some concepts to build a pay-as-you-go (PAYG) service contract as practice. I finished The Complete Solid...
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Nov 15, 2025
: Software, NLP, LLM, AI, Python

Hands-On: `kb-bridge` for Context-Aware Knowledge Base Search

In the previous posts (Part 1, Part 2, Part 3) I showed how we built the context-aware retriever. This post covers how to use kb-bridge, the Python...
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Nov 9, 2025
: Software, NLP, LLM, AI

How I'm Building a Context-Aware Retriever to Boost RAG Quality (Part 3: Evaluation)

In Part 1 and Part 2, I walked through the design and implementation. Now let’s evaluate how well it performs on the ContractNLI dataset and see if...
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Nov 2, 2025
: Software, NLP, LLM, AI

How I'm Building a Context-Aware Retriever to Boost RAG Quality (Part 2: Implementation)

In Part 1, I walked through the design. Now let’s see it in action with a hands-on example using the ContractNLI dataset. I’ll assume chunking is a...
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