Title
Balancing via Generation for Multi-Class Text Classification Improvement.
Abstract
Data balancing is a known technique for improving the performance of classification tasks. In this work we define a novel balancing-viageneration framework termed BalaGen. BalaGen consists of a flexible balancing policy coupled with a text generation mechanism. Combined, these two techniques can be used to augment a dataset for more balanced distribution. We evaluate BalaGen on three publicly available semantic utterance classification (SUC) datasets. One of these is a new COVID-19 Q\u0026A dataset published here for the first time. Our work demonstrates that optimal balancing policies can significantly improve classifier performance, while augmenting just part of the classes and under-sampling others. Furthermore, capitalizing on the advantages of balancing, we show its usefulness in all relevant BalaGen framework components. We validate the superiority of BalaGen on ten semantic utterance datasets taken from real-life goaloriented dialogue systems. Based on our results we encourage using data balancing prior to training for text classification tasks.
Year
DOI
Venue
2020
10.18653/V1/2020.FINDINGS-EMNLP.130
EMNLP
DocType
Volume
Citations 
Conference
2020.findings-emnlp
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Naama Tepper121.43
Esther Goldbraich200.34
Naama Zwerdling300.34
George Kour400.34
Ateret Anaby-Tavor500.34
Boaz Carmeli6416.70