Eugene Wu

Deeper

2018

Data scientists often spend more than 80% of their time on data preparation. Data enrichment, the act of extending a local database with new attributes from external data sources, is among the most time-consuming tasks. …

Progressive Deep Web Crawling Through Keyword Queries For Data Enrichment

2019

Data enrichment is the act of extending a local database with new attributes from external data sources. In this paper, we study a novel problem-how to progressively crawl the deep web (i.e., a hidden database) …

Reptile: Aggregation-level Explanations for Hierarchical Data

2021 · arXiv (Cornell University)

Recent query explanation systems help users understand anomalies in aggregation results by proposing predicates that describe input records that, if deleted, would resolve the anomalies. However, it can be difficult for users to understand how …