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+---
+layout: event
+title: "Precise Temporal Analysis Of Source Code Histories At Scale"
+categories: [events,lunch-talks]
+start: "11:15"
+end: "12:00"
+speaker: Quentin Le Dilavrec
+where: "Hybrid"
+---
+
+**Abstract**
+
+This talk is related to the results of my PhD, which I defended last February.
+I will present some of the results and mention the scientific contribution (papers),
+but I will give priority to possible synergies between these works and the interests of the group.
+Actually, during my PhD I developed a library to help with analysing histories of source code, called the HyperAST.
+I believe the HyperAST could be used in the team to answer software engineering questions using the code versioned in github repositories.
+The HyperAST presents an AST view to the source code, and provides features like structured diffs, tracking, reference analysis, dynamic queries, ...
+Internally, it leverages a DAG representation where the nodes of the AST are deduplicated, i.e., a collection of unique code subtrees.
+The HyperAST approach leverages its internal representation to offer new trade-offs when designing source code analyses,
+notably, by splitting an analysis into modules that compute intermediate results only depending on local information,
+then these intermediate results are computed and persisted once per deduplicated node,
+thus making the overall analysis incremental and more capable of scaling on large software projects.