New module src/speaker_oracle.py extracts speaker introductions from
transcripts ("let's talk to William", "we have Clay from the Nerd Junkies",
"in Tara's place, we have Clay", "thanks for the call <name>") and binds
them to non-HOST diarization turns. Pure post-pass on diarization JSONs,
no audio processing — corrects audio-only cosine errors using Mike's
deterministic on-air announcements.
Algorithm:
- Extract intros: regex patterns for caller pickups, guest intros,
fill-in announcements, caller closes. Case-strict (rejects mid-sentence
lowercase matches), with a blacklist of common false-positive words.
Deduplicates same-name intros within 5s.
- Resolve speakers: for each non-HOST turn, find the LATEST opening intro
at or before turn.start (with 8s forward tolerance for boundary slop).
Later intros implicitly close earlier callers, so the most recent
intro wins. No artificial lookback limit (callers can talk for 10+ min).
- Falls back to caller_close patterns within 30s after a turn ends.
Validation on 9-episode test set:
2018-s10e18: Christopher 190s correctly named (was mislabeled "Tara")
2012-06-09 : Kay 160s correctly named (was mislabeled "Tara")
2015-s7e19 : Clay 45s as fillin for Tara, William 40s as caller
2016-s8e43 : Charles 630s, Bruce 210s, John 205s — most callers named
2017-s9e30 : Denise 295s, Tom 115s, Elaine 85s, Jeff 10s
Many other callers across all episodes correctly named.
Remaining unnamed CO-HOST/CALLER (~5-10% of non-HOST time) are real
co-host banter or callers without explicit Mike-introductions.
benchmark.py: adds Phase 2.5 "Name Resolution" between diarization and
Q&A extraction. Prints named-speaker breakdown per episode. Doesn't
modify diarization JSONs (resolution is computed on demand).
Next step: feed named turns into qa_extractor so Q&A pairs get caller
name attached for searchability. Also: bootstrap recurring-speaker
profiles (Tara, Tony, Rob, Randall, producers) by accumulating
intro-tagged windows across the full archive once download completes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Mike Swanson
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