Lorentz Yeung – Medium

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Lorentz Yeung

A LangChain + OpenAI Complete Tutorial for Beginner — Lesson 3 Making Chatbots Smarter with…

Unlocking Advanced Chatbot Capabilities: A Journey Through LangChain Expression Language (LCEL)

10 min readFeb 7, 2024

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A LangChain + OpenAI Complete Tutorial for Beginner — Lesson 3 Making Chatbots Smarter with…

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Lorentz Yeung
in
Towards AI

A LangChain + OpenAI Complete Tutorial for Beginner — Lesson 1 Building Chatbot with LangChain…

Mastering Conversational AI: Your First Steps into Building Intelligent Chatbots

10 min readFeb 6, 2024

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A LangChain + OpenAI Complete Tutorial for Beginner — Lesson 1 Building Chatbot with LangChain…

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Lorentz Yeung
in
Towards Data Science

Website visitor forecast with Facebook Prophet: A Complete Tutorial

With installation instructions, data, parameters tuning, and both simple & sophisticated forecasting— Part 2

8 min readMar 10, 2022

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Website visitor forecast with Facebook Prophet: A Complete Tutorial

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Lorentz Yeung
in
Towards Data Science

Real-world website visitor forecast with Facebook Prophet: A Complete Tutorial

As a data analyst at Microsoft, I must investigate and understand time-series data every day. Besides looking at some key performance…

7 min readMar 10, 2022

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Website visitor forecast with Facebook Prophet all in one tutorial 2022 (with installation instructions, data, parameters tuning, and both simple & sophisticated forecasting) — Part 1

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Lorentz Yeung
in
Towards Data Science

Fundamental Marketing Analytics

Through Recency-Frequency-Monetary model and Managerial Segmentation with Python

4 min readFeb 12, 2020

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Fundamental Marketing Analytics

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Lorentz Yeung
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Towards Data Science

Pandas Data Wrangling Cheat Sheet 2021

To excel data analysis/data science/machine learning in Python, Pandas is a library you need to master. Here is a cheat sheet for some of…

9 min readApr 11, 2021

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Pandas Data Wrangling Cheat Sheet 2021

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Lorentz Yeung
in
Towards AI

A LangChain + OpenAI Complete Tutorial for Beginner — Lesson 2 Advanced Chatbot with RAG and…

Unlocking Next-Level Conversations: Deep Dive into RAG and Vector Databases

11 min readFeb 6, 2024

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A LangChain + OpenAI Complete Tutorial for Beginner — Lesson 2 Advanced Chatbot with RAG and…

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Lorentz Yeung

Driving Marketing Success: A Practical Guide to Geox

Unlock the power of GeoX with this insightful article. Learn through a practical Python example of GeoX with fabricated data.

7 min readJun 25, 2023

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Driving Marketing Success: A Practical Guide to Geox

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Lorentz Yeung

Unlocking the Power of Geospatial Analysis: Visualizing Satellite Locations, Inter-Satellite…

Welcome to the Python geospatial analysis! Unlock the power of satellite locations, inter-satellite distances, and service area overlaps.

10 min readJun 16, 2023

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Unlocking the Power of Geospatial Analysis: Visualizing Satellite Locations, Inter-Satellite…

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Lorentz Yeung

英國倫敦樓市研究(2) 對上10年倫敦樓市

如果還沒有看過之前第一篇，可按這裏返回觀看，我強烈建議大家先觀看第一篇。因為當中有講解資料的來源，倫敦的基本城鎮知識，例如什麼事城市，小鎮？什麼事大區域？

9 min readMay 12, 2022

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英國倫敦樓市研究(2) 對上10年倫敦樓市

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Lorentz Yeung

Lorentz Yeung

Data Analyst in Microsoft, Founder of El Arte Design and Marketing, Certified Digital Marketer, MSc in Digital Marketing, London based.

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