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Enable eval of empty MTGP#3145

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hvarfner wants to merge 1 commit intometa-pytorch:mainfrom
hvarfner:export-D90769576
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Enable eval of empty MTGP#3145
hvarfner wants to merge 1 commit intometa-pytorch:mainfrom
hvarfner:export-D90769576

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Summary:
Permits an MTGP to predict on an unobserved task, addressing these issues:
#2360
#3085

To do this, we assume that the unobserved task is maximally correlated with the target tasks (equally with each, by averaging the elements). Exact heuristic on correlation is definitely up for discussion, but this seems like a decent default assumption.

Will come in handy for TL initialization.

Differential Revision: D90769576

@meta-cla meta-cla bot added the CLA Signed Do not delete this pull request or issue due to inactivity. label Jan 16, 2026
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meta-codesync bot commented Jan 16, 2026

@hvarfner has exported this pull request. If you are a Meta employee, you can view the originating Diff in D90769576.

hvarfner pushed a commit to hvarfner/botorch that referenced this pull request Jan 19, 2026
Summary:

Permits a MTGP to predict on an unobserved task, addressing these issues:
meta-pytorch#2360
meta-pytorch#3085

To do this, we assume that the unobserved task is maximally correlated with the observed tasks (equally with each, by averaging the elements). Exact heuristic on correlation is definitely up for discussion, but this seems like a decent default assumption.

Will come in handy for TL initialization.

Differential Revision: D90769576
@hvarfner hvarfner force-pushed the export-D90769576 branch 2 times, most recently from 2ebc106 to 99c1b6f Compare January 19, 2026 17:53
hvarfner pushed a commit to hvarfner/botorch that referenced this pull request Jan 19, 2026
Summary:

Permits a MTGP to predict on an unobserved task, addressing these issues:
meta-pytorch#2360
meta-pytorch#3085

To do this, we assume that the unobserved task is maximally correlated with the observed tasks (equally with each, by averaging the elements). Exact heuristic on correlation is definitely up for discussion, but this seems like a decent default assumption.

Will come in handy for TL initialization.

Differential Revision: D90769576
@hvarfner hvarfner force-pushed the export-D90769576 branch 2 times, most recently from 2b8875f to a9e894e Compare February 4, 2026 18:00
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codecov bot commented Feb 4, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.97%. Comparing base (d043f05) to head (9c70ff5).

Additional details and impacted files
@@           Coverage Diff           @@
##             main    #3145   +/-   ##
=======================================
  Coverage   99.97%   99.97%           
=======================================
  Files         219      219           
  Lines       21221    21241   +20     
=======================================
+ Hits        21216    21236   +20     
  Misses          5        5           

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hvarfner pushed a commit to hvarfner/botorch that referenced this pull request Feb 4, 2026
Summary:
Pull Request resolved: meta-pytorch#3145

Permits an MTGP to predict on an unobserved task, addressing these issues:
meta-pytorch#2360
meta-pytorch#3085
To do this, we assume that the unobserved task is maximally correlated with the target tasks (equally with each, by averaging the elements). Exact heuristic on correlation is definitely up for discussion, but this seems like a decent default assumption.
Will come in handy for TL initialization.

Differential Revision: D90769576
@hvarfner hvarfner force-pushed the export-D90769576 branch 2 times, most recently from dff75b0 to 3128259 Compare February 4, 2026 19:23
hvarfner pushed a commit to hvarfner/botorch that referenced this pull request Feb 5, 2026
Summary:

Permits an MTGP to predict on an unobserved task, addressing these issues:
meta-pytorch#2360
meta-pytorch#3085
To do this, we assume that the unobserved task is maximally correlated with the target tasks (equally with each, by averaging the elements). Exact heuristic on correlation is definitely up for discussion, but this seems like a decent default assumption.
Will come in handy for TL initialization.

Differential Revision: D90769576
Summary:

Permits an MTGP to predict on an unobserved task, addressing these issues:
meta-pytorch#2360
meta-pytorch#3085
To do this, we assume that the unobserved task is maximally correlated with the target tasks (equally with each, by averaging the elements). Exact heuristic on correlation is definitely up for discussion, but this seems like a decent default assumption.
Will come in handy for TL initialization.

Differential Revision: D90769576
hvarfner pushed a commit to hvarfner/botorch that referenced this pull request Feb 5, 2026
Summary:

Permits an MTGP to predict on an unobserved task, addressing these issues:
meta-pytorch#2360
meta-pytorch#3085
To do this, we assume that the unobserved task is maximally correlated with the target tasks (equally with each, by averaging the elements). Exact heuristic on correlation is definitely up for discussion, but this seems like a decent default assumption.
Will come in handy for TL initialization.

Differential Revision: D90769576
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