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Predicting which tweets are about real disasters. Using Bag-of-Words, TF-IDF Vectors, Naive Bayes, Linear Discriminant Analysis, Truncated SVD, custom tokenizer, lemmatization, GridSearchCV.

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bag-of-words lda naive-bayes-classifier nlp-machine-learning svd text-classification text-processing tf-idf linear-discriminant-analysis lemmatization wordnetlemmatizer

nlp_with_disaster_tweets's Introduction

Natural Language Processing with Disaster Tweets

The aim of this project is to predict which tweets are about real disasters and which ones are not.

For this project I use the following methods:

  • Bag of words (CountVectorizer, TfidfTransformer etc.)
  • Defining a custom tokenizer that also includes lemmatization. As an alternative, nltk's TweetTokenizer.
  • Classification Method 1: Multinomial Naive Bayes
  • Classification Method 2: Linear Discriminant Analysis (LDA)
  • TruncatedSVD along with LDA to avoid potential dimensionality problems
  • Optimal hyperparameter search through GridSearchCV for LDA

Link to Kaggle competition: Addison Howard, devrishi, Phil Culliton, Yufeng Guo. (2019). Natural Language Processing with Disaster Tweets. Kaggle. https://kaggle.com/competitions/nlp-getting-started

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