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Lexical-Functional Grammar

2012· book-chapter· en· W2162501006 on OpenAlexaff
Ash Asudeh, Ida Toivonen

Bibliographic record

VenueOxford University Press eBooks · 2012
Typebook-chapter
Languageen
FieldComputer Science
TopicNatural Language Processing Techniques
Canadian institutionsCarleton University
Fundersnot available
KeywordsGenerative grammarComputer scienceSection (typography)LinguisticsGrammarHead-driven phrase structure grammarNatural language processingLexical functional grammarPhrase structure rulesArtificial intelligenceConstraint (computer-aided design)Mildly context-sensitive grammar formalismMathematicsPhilosophy

Abstract

fetched live from OpenAlex

Abstract Lexical-Functional Grammar (LFG) is a theory of generative grammar. The goal is to explain the native speaker's knowledge of language by specifying a grammar that models the speaker's knowledge explicitly and which is distinct from the computational mechanisms that constitute the language processor. This chapter is organized as follows. Section 15.2 discusses the two syntactic structures posited by LFG: constituent structure (c-structure) and functional structure (f-structure). LFG distinguishes between formal structures and structural descriptions that well-formed structures must satisfy. The structural descriptions are sets of constraints. A constraint is a statement that is either true or false of a structure. Section 15.3 provides an overview of the most important sorts of constraints. Section 17.4 explains how c-structure and f-structure are related by structural correspondences. Section 17.5 describes the Correspondence Architecture. Section 17.6 considers some recent developments in LFG.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.002
Version: metacan-v3-hybrid-931329e0061cValidation 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: Other · Consensus signal: Other
Teacher disagreement score0.023
Threshold uncertainty score0.076

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.002
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.001
Bibliometrics0.0010.001
Science and technology studies0.0010.004
Scholarly communication0.0030.004
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0230.004

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 head0.028
GPT teacher head0.209
Teacher spread0.182 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designTheoretical or conceptual
Domainnot available
GenreOther

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations20
Published2012
Admission routes1
Has abstractyes

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