Ensemble classifier based approach for code-mixed cross-script question classification

• Main Authors: Bhattacharjee, Debjyoti, Bhattacharya, Paheli
• Other Authors: School of Computer Science and Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2019
• Subjects: Question Answering System; DRNTU::Engineering::Computer science and engineering; Mixed Script Information Retrieval
• Online Access: https://hdl.handle.net/10356/87322; http://hdl.handle.net/10220/49465; http://ceur-ws.org/Vol-1737/
• Institution: Nanyang Technological University

With an increasing popularity of social-media, people post updates that aid other users in finding answers to their questions. Most of the user-generated data on social-media are in code-mixed or multi-script form, where the words are represented phonetically in a non-native script. We address the problem of Question-Classfication on social-media data. We propose an ensemble classifier based approach towards question classification when the questions are written in mixedscript, specifically, the Roman script for the Bengali language. We separately train Random Forests, One-Vs-Rest and k-NN classifiers and then build an ensemble classifier that combines the best from the three worlds. We achieve an accuracy of 82% approximately, suggesting that the method works well in the task.