Chi Chang Email and Phone Number

- Develop a RAG system that incorporates vectorized text data stored in ChromaDB, using the SelfQueryEngine as the retriever.- Design and deploy a comprehensive credit investigation platform featuring a credit assessment model, automated customer information extraction, and sales performance analysis.- Develop the data pipeline to process data into Neo4j database for implementing GraphRAG.- Fine-tuning Llama2-8B with QLORA to generate news summary.- Develop an LSTM model to forecast solar energy production.- Create a time series model that integrates both text and numerical data, leveraging insights from academic research.- Adopt cutting-edge techniques by reading academic papers and implementing their methodologies.

- Participate in the AI+ Competition: Develop a risk assessment model that combines Gaussian Mixture Model with SHAP for explainable AI.Winning the highest reward.- Develop and maintain dashboards using BigQuery and Tableau.

- Lead a team of 2 data analyst and 1 machine-learning engineer to cooperate with various teams in a fast-paced environment.- Leverage user behavior analysis and A/B test to identify an opportunity to increase product retention rate by 3%.- Developed a Random Forest model to predict player churn with an accuracy of 92%.- Manage and optimize the data pipeline of five products, decreasing the running time of data processing by 60%.

- Build the data pipeline and increase the diversity of player behavior collection for further analysis.- Build out the data and reporting infrastructure from the ground up using R and Tableau to provide insights into the business KPIs.- Automated processing of millions of rows of data from daily player action to improve reporting of product metrics, saving the company 24 hours of weekly labor.- Work with product and design teams to understand design and monetization needs, then translate them into actionable reports in Tableau.

- Design game system.- Optimize game system.

- Use MATLAB to analyze the cell death rate over time under different dose of the drug combination in order to observe the synergistic effect.