Data Science Espresso by Sarah Lea
Data Science Espresso by SarahMachine Learning, Deep Learning and Data Science simplified and served to your coffee break☕!
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 56 | Founded | 2 years ago | Last Issue | 10 days ago |
| Active | |||||
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sarahleaschrch.substack.comLatest Issues
I Built the Same B2B Document Extractor Twice: Regex-Rules vs. LLM
Imagine you process B2B order forms every day. In theory, all documents contain the same information:
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customer ID
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purchase order number
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delivery date
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ordered items
In practice, however, every customer structures the...
When Retrieval Goes Wrong in RAG Systems
Chunk Size 220
Q2: “How does OneLatex interpret text highlighted in green in OneNote?”
Answer: “If the background of a text in OneNote is marked in yellow, OneLatex interprets the text as native LaTeX code…”Chunk Size 500...
CSV Plot Agent with LangChain & Streamlit - The Perfect Starting Point
Could I build a small plot agent that understands natural language, picks the right tools and instantly returns the right answer or visualization?
I decided to find out. The result was a simple CSV Plot Agent with LangChain, Streamlit and...
Build a CSV Sanity-Check Agent in Python with LangChain
When you get a new CSV, what do you check first?
Typical questions are:
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Which columns does the dataset contain?
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Are there columns with missing values (NaNs)?
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What do the descriptive statistics of the numerical columns look l...
One of the concepts that makes Reinforcement Learning click
🍕 Always choose the best pizzeria you already know?
That’s the greedy strategy: Safe, but you might be missing something even better.
This is the Exploration vs. Exploitation dilemma in action.
In AI, it’s tackled with Multi-Armed Bandi...
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Authors
The writers behind this newsletter.
Simplifying tech for curious minds | Follow for insights that make tech accessible \ud83d\ude80 | Writing about Data, AI, ML & Python | MSc in Data Science in Progress | Ex-Salesforce-Consultant, now working at a Big Tech company
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