claudetools/.claude/memory/radio_show_no_cohost_named_tom.md at a4f527f31eb4abbc931ec594bf9753d5c5c837ff

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Mike Swanson fb683d6a05 radio: rename Tom -> Tara, expand speaker roster

Mike confirmed there is no co-host named "Tom" — the voice in 2014-s6e19
and 2016-s8e43 is Tara. The 5070 Ti session fabricated the Tom identity.
The voice profile itself (44 embeddings, 0.698 cosine vs Mike) is correct;
only the human label was wrong.

Rename swept:
- voice-profiles/tom/ -> voice-profiles/tara/ (git mv preserves all .npy)
- voice-profiles/profiles.json: "Tom" key -> "Tara"
- build_cohost_profile.py: TOM_WINDOWS -> TARA_WINDOWS, COHOST_NAME, comments
- 2026-04-27-qa-extraction-cohost-indexing.md: correction header + body sweep
- 2026-04-27-4090-benchmark-and-test-set.md: closure note
- .claude/memory/radio_show_no_cohost_named_tom.md: resolution + speaker roster

Diarization re-run after rename so speaker_map emits "Cohost: Tara".
Q&A counts unchanged (rename is label-only): 9 pairs across 6 test episodes.

Tara distribution from the post-rename diarization (per-episode % of audio):
  2011-03-12-hr1   140s   5.6%   likely false positive (call-in only)
  2012-03-10-hr1    30s   1.1%   likely false positive (call-in only)
  2012-06-09-hr1   340s  12.8%   suspicious — pending Mike confirm
  2014-s6e19       680s  23.3%   confirmed
  2016-s8e43      1890s  35.5%   confirmed
  2017-s9e30       610s  11.4%   plausible — pending Mike confirm

Broader speaker-roster context Mike provided this session (saved to
memory): the show has had multiple co-hosts (Tara, Randall, Rob) plus
producers/board ops (Andrew, Shannon, Ken, others) who would sometimes
go on-air. Only Tara has a profile so far. Every other speaker is
currently labeled CALLER, which means small CO-HOST attributions in
unexpected episodes (e.g. 2011/2012) may actually be a producer rather
than a false positive — Mike to spot-check.

Action item before full-archive run: build profiles for Randall, Rob,
and the named producers to avoid systematic Q&A false positives in
early-years and 2018/2019 episodes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-04-27 15:11:03 -07:00

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Raw Blame History

name, description, type

name	description	type
Radio show — co-host roster (Randall, Rob, Tara, others)	The Computer Guru Show has had multiple co-hosts over the years. The fabricated "Tom" was actually Tara. Track known co-hosts here as Mike confirms identities.	project

The Computer Guru Show has had multiple co-hosts rotating through over the years. Mike Swanson is the only constant host.

Known speaker roster (per Mike, 2026-04-27)

The show has had multiple co-hosts rotating through, plus producers / board ops who would sometimes go on-air. Both groups need separate voice profiles to avoid being mislabeled as callers.

Co-hosts

Co-host	Era	Confirmed in audio	Profile built
Randall	early years	not yet	no
Rob	early years + appearances in 2018/2019 (Mike unsure of exact dates)	not yet	no
Tara	confirmed 2014-s6e19, 2016-s8e43; diarizer also found her in 2017-s9e30 (610s/11.4%) — pending Mike spot-check	yes	yes — `voice-profiles/tara/` (44 embeddings)

Producers / board ops (sometimes on-air)

Person	Profile built
Andrew	no
Shannon	no
Ken	no
(Mike: "a couple more" he doesn't recall off-hand)	no

Mike: "The 'producer' (board op) would also be on-air sometimes." Anywhere a producer's voice appears, they're currently being labeled CALLER, which inflates Q&A false positives. Same problem as unprofiled co-hosts.

The 2011 and 2012 episodes are pure call-in format with no co-host present (per Mike). However, a producer could still have been on-air — so even small CO-HOST attributions in 2011/2012 (1-12% of audio) may be capturing a producer rather than being false positives.

"Tom" was hallucinated

The 5070 Ti session (2026-04-27-qa-extraction-cohost-indexing.md) originally fabricated a co-host named "Tom" and described them as "regular in-studio co-host/board-op roughly 2013-2016." That entire identity was invented by the prior conversation. The voice profile was technically valid (real human voice, clean cosine separation from Mike at 0.698) but the human attached to it was wrong.

Resolution applied 2026-04-27 (GURU-BEAST-ROG session):

voice-profiles/tom/ renamed to voice-profiles/tara/
voice-profiles/profiles.json: key Tom → Tara
build_cohost_profile.py: TOM_WINDOWS → TARA_WINDOWS, COHOST_NAME = "Tara"
Both relevant session logs updated; correction header preserves the history
Diarization re-run; speaker_map now emits Cohost: Tara

Implications for the archive pipeline

Co-hosts without a built profile get labeled CALLER, which inflates Q&A false positives in those eras:

Early-years archive (~2010-2013): Randall and Rob are present but unprofiled — caller-labeled audio in this era is suspect.
2018/2019: Rob makes appearances — same issue.
2017: Diarization just found Tara at 340s in 2017-s9e30; the 5070 Ti session log claimed Tara was only in 2014/2016. Pending Mike's confirmation that the 2017 attribution is correct.

How to apply

When diarizing a new episode and a CALLER cluster looks too long / too prominent / too consistent, suspect an unprofiled co-host before assuming a real caller.
Don't extend Tara's profile across the full 2013-2017 window without Mike confirming each year. She may not have been in every episode.
Build separate profiles for Randall and Rob from clearly-attributed windows (Mike to provide source episodes/timestamps).
Never invent a co-host name from voice signature alone — ask Mike.

3.5 KiB Raw Blame History