  Entity population, a task of collecting entities that belong to a particular
category, has attracted attention from vertical domains. There is still a high
demand for creating entity dictionaries in vertical domains, which are not
covered by existing knowledge bases. We develop a lightweight front-end tool
for facilitating interactive entity population. We implement key components
necessary for effective interactive entity population: 1) GUI-based dashboards
to quickly modify an entity dictionary, and 2) entity highlighting on documents
for quickly viewing the current progress. We aim to reduce user cost from
beginning to end, including package installation and maintenance. The
implementation enables users to use this tool on their web browsers without any
additional packages --- users can focus on their missions to create entity
dictionaries. Moreover, an entity expansion module is implemented as external
APIs. This design makes it easy to continuously improve interactive entity
population pipelines. We are making our demo publicly available
(http://bit.ly/luwak-demo).
