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Lorentz Yeung

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Lorentz Yeung

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Feb 7, 2024

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

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

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

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Towards AI

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Lorentz Yeung

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Feb 6, 2024

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

Mastering Conversational AI: Your First Steps into Building Intelligent Chatbots

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

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TDS Archive

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Lorentz Yeung

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Mar 10, 2022

Website visitor forecast with Facebook Prophet: A Complete Tutorial

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

Website visitor forecast with Facebook Prophet: A Complete Tutorial

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Lorentz Yeung

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Mar 10, 2022

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…

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

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Feb 12, 2020

Fundamental Marketing Analytics

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

Fundamental Marketing Analytics

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Lorentz Yeung

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Apr 11, 2021

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…

Pandas Data Wrangling Cheat Sheet 2021

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AI Advances

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Lorentz Yeung

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Apr 19

My System Beats Claude Sonnet 4.6 on Accuracy. Here’s the Story.

What a live data pipeline does that raw prompting can’t — verified against HM Land Registry.

OpenProp.co.uk System Beats Claude Sonnet 4.6 on Accuracy. Here’s the Story.

Lorentz Yeung

·

Apr 16

2026 Review: Analyzing London’s Two-Speed Market Through Lens of 2025 Data

The headline median barely moved — but beneath it, outer London surged while prime central London fell sharply. Here is what the official…

London’s Two-Speed Market: What the 2025 Data Actually Shows

Lorentz Yeung

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Apr 16

In 2026, How We Researched London’s 2025 Property Market — And How You Can Too

In 2026 April, we published London’s Two-Speed Market: What the 2025 Data Actually Shows — an analysis of what really happened to London…

In 2026, How We Researched London’s 2025 Property Market — And How You Can Too

Lorentz Yeung

·

Mar 19

I Built My First OpenClaw App — And I Haven’t Opened My Inbox Since

A tiny email assistant that runs while you sleep, scores your emails, and drafts replies before you even pick up your phone.

I Built My First OpenClaw App — And I Haven’t Opened My Inbox Since

Lorentz Yeung

Lorentz Yeung

AI and Automation Engineer at Wandsworth Council | Creator of London Property AI Analyst, Kaggle Expert. Former Microsoft Data Analyst & Founder of OpenProp.

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