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/phd_defense/defense_slides.md

@@ -0,0 +1,17 @@
+---
+category: academic
+type: academic
+person: Yanxin Lu
+date: 2018-11
+source: defense_slides.key
+---
+
+# PhD Thesis Defense Slides
+
+Keynote presentation for Yanxin Lu's PhD thesis defense at Rice University, November 2018.
+
+Topic: Program Splicing — Data-driven Program Synthesis
+
+The defense covers the same material as the PhD thesis: using a large corpus of programs (3.5 million from GitHub and SourceForge) to automatically synthesize code by splicing together relevant code fragments. The system uses the Pliny database (PDB) for efficient top-k retrieval of similar programs, enumerative search to fill in program holes, variable renaming to resolve undefined variables, and unit testing to filter out incorrect candidates. Benchmarks demonstrate efficient synthesis times (3–161 seconds) across problems like sieve prime, binary search, CSV parsing, matrix multiplication, and LCS. A user study with 12 graduate students and 6 professionals showed program splicing significantly reduced programming time, especially for algorithmic tasks and tasks without standard solutions.
+
+Note: The preview image shows only the title slide (blank/white). The full Keynote file contains the complete presentation.