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Record W2050265418 · doi:10.1145/1804669.1804698

Data correspondence, exchange and repair

2010· article· en· W2050265418 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.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicAdvanced Database Systems and Queries
Canadian institutionsConcordia University
Fundersnot available
KeywordsHomomorphismComputer scienceTupleData exchangeGeneralizationFunctional dependencyClass (philosophy)Theoretical computer sciencePerspective (graphical)DatabaseRelational databaseMathematicsDiscrete mathematicsArtificial intelligence

Abstract

fetched live from OpenAlex

Checking the correspondence between two or more database instances and enforcing it is a procedure widely used in practice without however having been explored from a theoretical perspective. In this paper we formally introduce the data correspondence setting and its associated computational problems: checking the existence of solutions, and verifying whether a candidate is a solution, for three distinct types of solutions. Data correspondence is a generalization of data exchange and peer data exchange, and a special case of repairing inconsistent databases. We introduce a new class of dependencies, called semi-LAV, that properly includes both LAV and full dependencies, while retaining tractability for peer data exchange, data correspondence, and database repairs. We also introduce the concept of Σ-satisfying homomorphisms. This new type of homomorphism, together with recent advances, is essential in achieving tractability, while at the same time allowing a large class of dependencies, namely the aforementioned semi-LAV ones. We also show the intractability for a series of problems in the case of weakly acyclic tuple generating dependencies. This implies that many tractability results for weakly acyclic dependencies do not carry over to data correspondence; in these new settings we need to restrict the dependencies a bit further, yielding our semi-LAV dependencies.

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)0.000
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: Not applicable · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.931
Threshold uncertainty score0.185

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.001
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 head0.032
GPT teacher head0.286
Teacher spread0.253 · 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

Quick stats

Citations10
Published2010
Admission routes1
Has abstractyes

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