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Record W2594003820 · doi:10.4086/toc.2019.v015a017

[no title]

2019· article· en· W2594003820 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

fundA Canadian funder is recorded on the work.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueTheory of Computing · 2019
Typearticle
Languageen
FieldComputer Science
TopicComplexity and Algorithms in Graphs
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of CanadaScience and Engineering Research BoardAlfred P. Sloan Foundation
KeywordsCombinatoricsUpper and lower boundsBoolean functionDegree (music)MathematicsOmegaPolynomialMonotone polygonFunction (biology)Binary logarithmDiscrete mathematicsPhysicsMathematical analysisQuantum mechanicsGeometry

Abstract

fetched live from OpenAlex

We give the first separation between the power of formulas and circuits in the AC 0 [] basis (unbounded fan-in AND, OR, NOT and MOD 2 gates).We show that there exist poly(n)-size depth-d circuits that are not equivalent to any depth-d formula of size n o (d) for all d O(log(n)/log log(n)).This result is obtained by a combination of new lower and upper bounds for Approximate Majorities, the class of Boolean functions {0, 1} n {0, 1} that agree with the Majority function on a 3/4 fraction of the inputs.AC 0 [ ] formula lower bound.We show that every depth-d AC 0 [] formula of size s has a 1/4-error polynomial approximation over F 2 of degree O((1/d) log s) d-1 .This strengthens a classic O(log s) d-1 degree approximation for circuits due to Razborov (1987).Since any polynomial that approximates the Majority function has degree ( n), this result implies an exp((dn 1/2(d-1) )) lower bound on the depth-d AC 0 [] formula size of all Approximate Majority functions for all d O(log n).Monotone AC 0 circuit upper bound.For all d O(log(n)/log log(n)), we give a randomized construction of depth-d monotone AC 0 circuits (without NOT or MOD 2 gates) of size exp(O(n 1/2(d-1) )) that compute an Approximate Majority function.This strengthens a construction of formulas of size exp(O(dn 1/2(d-1) )) due to Amano (2009).

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.003
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: Theoretical or conceptual
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.357
Threshold uncertainty score0.851

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0030.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0030.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.014
GPT teacher head0.233
Teacher spread0.219 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it