# Document Visualization using Topic Clouds

## TL;DR

This paper introduces Topic Clouds, a visualization method that represents document topics and their important words in a pie chart, aiding interpretation of complex topic models.

## Contribution

It proposes a novel visualization technique for distributed document representations, combining topic importance and word significance in an intuitive pie chart format.

## Key findings

- Topic Clouds effectively visualize multiple topics within a document.
- The method helps evaluate the quality of document representations.
- It facilitates comparison of different topic modeling algorithms.

## Abstract

Traditionally a document is visualized by a word cloud. Recently, distributed representation methods for documents have been developed, which map a document to a set of topic embeddings. Visualizing such a representation is useful to present the semantics of a document in higher granularity; it is also challenging, as there are multiple topics, each containing multiple words. We propose to visualize a set of topics using Topic Cloud, which is a pie chart consisting of topic slices, where each slice contains important words in this topic. To make important topics/words visually prominent, the sizes of topic slices and word fonts are proportional to their importance in the document. A topic cloud can help the user quickly evaluate the quality of derived document representations. For NLP practitioners, It can be used to qualitatively compare the topic quality of different document representation algorithms, or to inspect how model parameters impact the derived representations.