Non-Brand Data | Cornellius Yudha Wijaya | Substack

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RAG-To-Know🔍

RAG Evaluation Monitoring and Logging with Opik

NBD Lite #53 How you splitting your data can affect the RAG performance

May 14, 2025 • Cornellius Yudha Wijaya

9 Chunking Strategies to Improve RAG Performance

NBD Lite #52 How you splitting your data can affect the RAG performance

Mar 10, 2025 • Cornellius Yudha Wijaya

Explainable RAG for More Trustworthy System

NBD Lite #51 Evaluate both the retrieval and generation in systematic ways

Feb 14, 2025 • Cornellius Yudha Wijaya

Enhance RAG Accuracy with Corrective-RAG (CRAG)

NBD Lite #50 Implement self-reflection for the retrieved documents

Feb 6, 2025 • Cornellius Yudha Wijaya

career

Best MCP Servers for Stock Market Data

The best MCP servers for connecting AI agents to financial workflow

May 21 • Cornellius Yudha Wijaya

The GenAI Skill Data Professionals Need Most: Evaluation

Only by evaluating things that we know our system is good.

May 14 • Cornellius Yudha Wijaya

The ML Skills That Still Matter in 2026

The skills that still make you desirable by companies and ahead of everyone

Apr 30 • Cornellius Yudha Wijaya

What Real SQL Work Taught Me About Being a Data Scientist

Why I stopped seeing SQL as a secondary skill and started seeing it as the backbone of real data projects

Mar 28 • Cornellius Yudha Wijaya

python

Batch Screening Fundamentals with Financial Modeling Prep and Streamlit

Build a Lightweight Stock Screener For Your Fundamental Analysis

Jan 7 • Cornellius Yudha Wijaya

Building an Open-Source Microservice for Financial Data Retrieval with Financial Modelling Prep

Company-Fundamental Tracking Microservice that is Suitable For Your Requirements.

Dec 6, 2025 • Cornellius Yudha Wijaya

Python 3.14: 12 Features You Can Use Today

The addition features you should not miss

Oct 22, 2025 • Cornellius Yudha Wijaya

From Draft to Deployed: My Full Workflow for Building & Shipping a Predictive Modeling Product

See how a full predictive modeling product gets built and shipped.

Oct 2, 2025 • Cornellius Yudha Wijaya

🚀 Join Non-Brand Data for free AI + Data Science tips

Recent posts

The GenAI Skill Data Professionals Need Most: Evaluation

Only by evaluating things that we know our system is good.

May 14 • Cornellius Yudha Wijaya

The ML Skills That Still Matter in 2026

The skills that still make you desirable by companies and ahead of everyone

Apr 30 • Cornellius Yudha Wijaya

What Real SQL Work Taught Me About Being a Data Scientist

Why I stopped seeing SQL as a secondary skill and started seeing it as the backbone of real data projects

Mar 28 • Cornellius Yudha Wijaya

Best Stock Market data API in the AI Agent era

How modern financial APIs are powering the next generation of AI-driven market research and trading tools

Mar 14 • Cornellius Yudha Wijaya

7 SQL Use Cases Every Data Professional Should Know

Most people learn SQL as syntax. The real thing is knowing what kinds of problems it helps you solve.

Mar 7 • Cornellius Yudha Wijaya

Cohort Retention in SQL

From Raw Events to a Decision-Ready Table

Mar 6 • Cornellius Yudha Wijaya

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