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Record W2291149938 · doi:10.1137/1.9781611973754.2

A Data-Aware FM-index

2014· book-chapter· en· W2291149938 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

VenueSociety for Industrial and Applied Mathematics eBooks · 2014
Typebook-chapter
Languageen
FieldComputer Science
TopicAlgorithms and Data Compression
Canadian institutionsUniversity of Waterloo
Fundersnot available
KeywordsSearch engine indexingComputer scienceCode (set theory)Index (typography)AlgorithmWaveletData compressionEntropy (arrow of time)Tree (set theory)Theoretical computer scienceWavelet transformData miningArtificial intelligenceMathematics

Abstract

fetched live from OpenAlex

In this paper we present some practical modifications of the higher-order entropy-compressed text indexing method of Foschini et al. [6] based upon the Burrows-Wheeler transform and the FM-index. Our method, called FM-Adaptive, applies a wavelet tree to the entire BWT. It partitions each bit vector of nodes in the wavelet tree into blocks and applies the hybrid encoding along with run-length Gamma code rather than the fixed-length code of [14] to each block while explores data-aware compression. FM-Adaptive retains the theoretical performance of previous work and introduces some improvements in practice. At the same time, broad experiments indicate that our index achieves superior performance, especially in terms of compression, in comparison to the state-of-the-art indexing techniques. The source code is available online.

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)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.618
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0020.002
Research integrity0.0010.001
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 head0.104
GPT teacher head0.267
Teacher spread0.163 · 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