title	emoji	colorFrom	colorTo	sdk	sdk_version	app_file	pinned	license
Who killed Laura Palmer?	🗻🗻	blue	green	streamlit	1.2.0	app.py	false	apache-2.0

Who killed Laura Palmer?  

🗻🗻 Twin Peaks Question Answering system

WKLP is a simple Question Answering system, based on data crawled from Twin Peaks Wiki. It is built using 🔍 Haystack, an awesome open-source framework for building search systems that work intelligently over large document collections.

• Project architecture 🧱
• What can I learn from this project? 📚
• Repository structure 📁
• Installation 💻
• Possible improvements ✨

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Project architecture 🧱

• Crawler: implemented using Scrapy and fandom-py
• Question Answering pipelines: created with Haystack
• Web app: developed with Streamlit
• Free hosting: Hugging Face Spaces

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What can I learn from this project? 📚

• How to quickly ⌚ build a modern Question Answering system using 🔍 Haystack
• How to generate questions based on your documents
• How to build a nice Streamlit web app to show your QA system
• How to optimize the web app to 🚀 deploy in 🤗 Spaces

Repository structure 📁

• app.py: Streamlit web app
• app_utils folder: python modules used in the web app
• crawler folder: Twin Peaks crawler, developed with Scrapy and fandom-py
• notebooks folder: Jupyter/Colab notebooks to create the Search pipeline and generate questions (using Haystack)
• data folder: all necessary data
• presentations: Video presentation and slides (PyCon Italy 2022)

Within each folder, you can find more in-depth explanations.

Installation 💻

To install this project locally, follow these steps:

• git clone https://github.com/anakin87/who-killed-laura-palmer
• cd who-killed-laura-palmer
• pip install -r requirements.txt

To run the web app, simply type: streamlit run app.py

Possible improvements ✨

Project structure

• The project is optimized to be deployed in Hugging Face Spaces and consists of an all-in-one Streamlit web app. In more structured production environments, I suggest dividing the software into three parts:
  • Haystack backend API (as explained in the official documentation)
  • Document store service
  • Streamlit web app

Reader

• The reader model (deepset/roberta-base-squad2) is a good compromise between speed and accuracy, running on CPU. There are certainly better (and more computationally expensive) models, as you can read in the Haystack documentation.
• You can also think about preparing a Twin Peaks QA dataset and fine-tuning the reader model to get better accuracy, as explained in this Haystack tutorial.