Disaster Response Pipeline Project

Table of Contents

1. Description
2. Getting Started
   1. Requirements
   2. Installation
   3. Execution
   4. Important Files
   5. Additional resources
3. Authors
4. Acknowledgement

Description

The goal of this project is to build a Natural Language Processing (NLP) model that categorizes messages on a real time basis. This Project is part of the Data Science Nanodegree Program by Udacity in collaboration with Figure Eight. The dataset is provided by Figure Eight and contains pre-labelled tweet and messages from real-life disaster events.

This project has three main sections:

1. Building an ETL pipeline to extract data from source, clean the data and load the data into a SQLite DB
2. Building a machine learning pipeline to train and classify text messages in various categories
3. Run a web app which can show the model results in real time

Requirements

• Python 3
• Machine Learning Libraries: NumPy, SciPy, Pandas, Sciki-Learn
• Natural Language Process Libraries: NLTK
• SQLlite Database Libraries: SQLalchemy
• Model Loading and Saving Library: Pickle
• Web App and Data Visualization: Flask, Plotly

Installing

To clone the git repository:

git clone https://github.com/OmoyeniO/Disaster-Response-Pipeline.git

Execution

1. Run the following commands in the project's directory to set up the database, train model and save the model.

   • To run ETL pipeline to clean data and store the processed data in the database python data/process_data.py data/disaster_messages.csv data/disaster_categories.csv data/disaster_response_db.db
   • To run the ML pipeline that loads data from DB, trains classifier and saves the classifier as a pickle file python models/train_classifier.py data/disaster_response_db.db models/classifier.pkl

2. Run the following command in the app's directory to run your web app --- Go to app directory: cd app then python run.py

3. Go to http://0.0.0.0:3000/

Important Files

app/templates/*: templates/html files for web app

data/process_data.py: Extract Train Load (ETL) pipeline used for data cleaning, feature extraction, and storing data in a SQLite database

models/train_classifier.py: A machine learning pipeline that loads data, trains a model, and saves the trained model as a .pkl file for later use

run.py: This file can be used to launch the Flask web app used to classify disaster messages

Additional resources

The code contains two jupyter notebooks names ML pipeline preperation and ETL pipeline preperation that will help in understanding how the model works in detail:

1. ETL Pipeline Preparation Notebook: learn everything about the implemented ETL pipeline
2. ML Pipeline Preparation Notebook: look at the Machine Learning Pipeline developed with NLTK and Scikit-Learn

You can use ML Pipeline Preparation Notebook to re-train the model or tune it through a dedicated Grid Search section.

Authors

• Omoyeni Ogundipe

Acknowledgements

• Udacity for providing an amazing Data Science Nanodegree Program
• Figure Eight for providing the relevant dataset to train the model