Implementation of Visualization of Characteristic Phrases Using XAI for Prefectural Assembly Minutes Search System

Abstract

Many local governments in Japan publish their council meeting minutes in an electronic format. In a previous study, the authors showed that XAI technology can be applied to a BERT-based classifier for estimating the speaker of an utterance in the minutes to visualize characteristic expressions that are specific to a region or that show the speaker’s political interests. In this study, we describe the implementation of characteristic phrase visualization using XAI in a prefectural assembly meeting minutes search system developed and published by the authors. We also discuss use cases in which residents utilize the characteristic information of regions and speakers obtained as a result of the visualization.