September 18, 2020 Conference paper Open Access

Brody, Shaked; Alon, Uri; Yahav, Eran

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{
  "description": "<p>We address the problem of predicting edit completions based on a learned model that was trained on past edits.<br>\nGiven a code snippet that is partially edited, our goal is to predict a completion of the edit for the rest of the<br>\nsnippet. We refer to this task as the EditCompletion&nbsp;task and present a novel approach for tackling it. The<br>\nmain idea is to directly represent structural edits. This allows us to model the likelihood of the edit itself, rather<br>\nthan learning the likelihood of the edited code. We represent an edit operation as a path in the program&rsquo;s Abstract<br>\nSyntax Tree (AST), originating from the source of the edit to the target of the edit. Using this representation, we<br>\npresent a powerful and lightweight neural model for the EditCompletion&nbsp;task.</p>\n\n<p><br>\nWe conduct a thorough evaluation, comparing our approach to a variety of representation and modeling<br>\napproaches that are driven by multiple strong models such as LSTMs, Transformers, and neural CRFs. Our<br>\nexperiments show that our model achieves 28% relative gain over state-of-the-art sequential models and 2&times;<br>\nhigher accuracy than syntactic models that learn to generate the edited code instead of modeling the edits<br>\ndirectly. We make our code, dataset, and trained models publicly available.</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "Technion", 
      "@type": "Person", 
      "name": "Brody, Shaked"
    }, 
    {
      "affiliation": "Technion", 
      "@type": "Person", 
      "name": "Alon, Uri"
    }, 
    {
      "affiliation": "Technion", 
      "@type": "Person", 
      "name": "Yahav, Eran"
    }
  ], 
  "headline": "A Structural Model for Contextual Code Changes", 
  "image": "https://zenodo.org/static/img/logos/zenodo-gradient-round.svg", 
  "datePublished": "2020-09-18", 
  "url": "https://zenodo.org/record/4036303", 
  "@type": "ScholarlyArticle", 
  "keywords": [
    "Programming Languages", 
    "Machine Learning"
  ], 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.5281/zenodo.4036303", 
  "@id": "https://doi.org/10.5281/zenodo.4036303", 
  "workFeatured": {
    "alternateName": "OOPSLA", 
    "@type": "Event", 
    "name": "Object-Oriented Programming, Systems, Languages and Applications"
  }, 
  "name": "A Structural Model for Contextual Code Changes"
}