Text data is ultra-high dimensional, which makes machine learning techniques indispensable for textual analysis. Text … develop an economically motivated high dimensional selection model that improves learning from text (and from sparse counts … newspaper text, and that it substantially improves out-of-sample fit relative to alternative approaches …

An ever increasing share of human interaction, communication, and culture is recorded as digital text. We provide an … introduction to the use of text as an input to economic research. We discuss the features that make text different from other forms …