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Challenge 06: Airline Reviews
Level: Hard

Description: You work for a Marketing agency that monitors the online presence of a few airline companies to understand how they are being reviewed. You were asked to identify whether a tweet mentioning an airline is positive, neutral, or negative, and decided to implement a simple sentiment analysis classifier for this task. What accuracy can you get when automating this process? Is the classifier likely to help company reviewers save their time? Note: Given the size of the dataset, training the classifier may take a little while to execute on your machine (especially if you use more sophisticated methods. Feel free to use only a part of the dataset in this challenge if you want to speed up your solution. Hint 1: Check our Textprocessing extension to learn more about how you can turn tweets' words into features that a classifier can explore. Hint 2: Study, use, and/or adapt shared components Enrichment and Preprocessing and Document Vectorization (in this order!) if you want to get a part of the work done more quickly. They were created especially for this challenge. Hint 3: Remember to partition the dataset into training and test set in order to create the decision tree model and then evaluate it. Feel free to use the partitioning strategy you prefer.

Nodes

• Component Input3 ×
• Component Output3 ×
• Scorer3 ×
• Bag Of Words Creator2 ×
• Dictionary Filter2 ×
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Extensions

• FeatureKNIME Base nodes
• FeatureKNIME Optimization extension
• FeatureKNIME Textprocessing
• FeatureKNIME XGBoost Integration

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