Tue 6 Nov 2018 13:30 - 13:52 at Horizons 6-9F - Deep Learning Chair(s): David Rosenblum

Dynamically typed languages such as JavaScript and Python are increasingly popular, yet static typing has not been totally eclipsed: Python now supports type annotations and languages like TypeScript offer a middle-ground for JavaScript: a strict superset of JavaScript, to which it transpiles, coupled with a type system that permits partially typed programs. However, static typing has a cost: adding annotations, reading the added syntax, and wrestling with the type system to fix type errors. Type inference can ease the transition to more statically typed code and unlock the benefits of richer compile-time information, but is limited in languages like JavaScript as it cannot soundly handle duck-typing or runtime evaluation via eval. We propose DeepTyper, a deep learning model that understands which types naturally occur in certain contexts and relations and can provide type suggestions, which can often be verified by the type checker, even if it could not infer the type initially. DeepTyper, leverages an automatically aligned corpus of tokens and types to accurately predict thousands of variable and function type annotations. Furthermore, we demonstrate that context is key in accurately assigning these types and introduce a technique to reduce overfitting on local cues while highlighting the need for further improvements. Finally, we show that our model can interact with a compiler to provide more than 4,000 additional type annotations with over 95% precision that could not be inferred without the aid of DeepTyper.

Tue 6 Nov
Times are displayed in time zone: (GMT-05:00) Guadalajara, Mexico City, Monterrey change

fse-2018-research-papers
13:30 - 15:00: Research Papers - Deep Learning at Horizons 6-9F
Chair(s): David RosenblumNational University of Singapore
fse-2018-research-papers13:30 - 13:52
Talk
Vincent HellendoornUniversity of California at Davis, USA, Christian BirdMicrosoft Research, Earl T. Barr, Miltiadis AllamanisMicrosoft Research, Cambridge
fse-2018-research-papers13:52 - 14:15
Talk
Gang Zhao, Jeff HuangTexas A&M University
fse-2018-research-papers14:15 - 14:37
Talk
Jordan HenkelUniversity of Wisconsin–Madison, Shuvendu K. LahiriMicrosoft Research, Ben LiblitUniversity of Wisconsin–Madison, Thomas RepsUniversity of Wisconsin - Madison and GrammaTech, Inc.
fse-2018-research-papers14:37 - 15:00
Talk
Shiqing MaPurdue University, USA, Yingqi LiuPurdue University, USA, Wen-Chuan LeePurdue University, Xiangyu ZhangPurdue University, Ananth GramaPurdue University, USA