Archive 10 academic presentations from ~/Downloads/slides/ (2014-2018)

- PhD defense slides (defense.key, Nov 2018) → phd_defense/
- Master's defense on MOOC peer evaluation (Dec 2014)
- ENGI 600 data-driven program repair (Apr 2015)
- COMP 600 data-driven program completion (Fall 2015, Spring 2016)
- COMP 600 Program Splicing presentation + feedback + response (Spring 2018)
- Program Splicing slides in .key and .pdf formats (Spring 2018)

Each file has a .md transcription with academic frontmatter.
Skipped www2015.pdf (duplicate of existing www15.zip) and syncthing conflict copy.

documents/academic/presentations/codecomplete_spring2016.md

@@ -0,0 +1,74 @@
+---
+category: academic
+type: academic
+person: Yanxin Lu
+date: 2016-01
+source: codecomplete_spring2016.pptx
+---
+
+# COMP 600 Spring 2016: Data Driven Program Completion
+
+Yanxin Lu, Swarat Chaudhuri, Christopher Jermaine, Drew Dehaas, Vineeth Kashyap, and David Melski. Presented by Yanxin Lu. 29 slides.
+
+## Slide 2: Title
+Data Driven Program Completion
+
+## Slide 3–4: Programming is difficult
+- Longest Common Subsequence example
+
+## Slide 5: Program Synthesis
+- Automatically generating programs
+- Specification: logic formula, unit testing, natural language
+
+## Slide 6: Related work
+- Deductive and solver-aided synthesis
+- Constraint-based synthesis: syntax-guided synthesis, Sketching, Template
+- Inductive synthesis: input-output examples
+
+## Slide 7: Big data
+- GitHub, SourceForge, Google Code, StackOverflow
+
+## Slide 8–9: Summary
+- Data-driven program completion, corpus and Pliny database, synthesis algorithm, initial experiment and future work
+
+## Slide 10–11: Program completion
+- Sketch + programs in DB + test cases
+- LCS example: LCS("123", "123") = "123", LCS("123", "234") = "23"
+
+## Slide 12–13: Workflow
+- Synthesis ↔ PDB
+- Incomplete program → query → programs → completed program
+
+## Slide 14: PDB
+- Thousands of programs with features, similarity metrics
+- Fast top-k query: 1-2 orders of magnitude faster than no-SQL systems
+
+## Slide 15: Corpus
+- 100,000+ projects, C/C++/Java
+- 50GB source code, 480+ C projects
+
+## Slide 16: Feature Extraction
+- Names: X, s, n, j, Y, index, lcs
+- TF/IDF: "charact": 0.158, "reduc": 0.158, "result": 0.316, "lc": 0.791, "index": 0.316
+
+## Slides 18–21: Synthesis Algorithm
+- Search PDB for similar programs
+- Fill holes via enumerative search
+- Merge undefined variables
+- Test to filter incorrect programs
+
+## Slides 22–24: Heuristics
+- Types: ignore incompatible types
+- Context: ignore expressions with no common parents
+- Huge search space reduction
+
+## Slides 25–26: Initial experiment and future work
+- LCS: less than 10 seconds
+- Future work: more benchmarks, closure, search PDB using types
+
+## Slides 27–28: Program repair
+- Use PDB to find most similar correct program
+- Bug localization → holes → completion
+
+## Slide 29: Conclusion
+- Program Completion: no more copy and paste, focus on important tasks