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Record W1568933256

Fuzzy string kernel representations in speech processing

2003· article· en· W1568933256 on OpenAlex
Robert Kirchner

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.
venuePublished in a venue whose home country is Canada.

Bibliographic record

VenueCanadian acoustics · 2003
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicMachine Learning in Bioinformatics
Canadian institutionsUniversity of Alberta
Fundersnot available
KeywordsString kernelKernel (algebra)Pattern recognition (psychology)String (physics)Computer scienceFeature vectorKernel methodSpeech recognitionArtificial intelligenceCluster analysisFeature (linguistics)SubsequenceSupport vector machineMathematicsRadial basis function kernelDiscrete mathematics
DOInot available

Abstract

fetched live from OpenAlex

Many widely used approaches to pattern recognition/machine learning, including neural nets, k-nearest-neighbours classifiers, and support vector machines, have hitherto made little headway in speech processing, largely due to their inability to represent and compute over the variable-length sequential data of speech signals. A new technique, the string (subsequence) kernel, first applied in bioinformatics [1] and text classification [2], and extended to speech recognition by Goddard et al. [3], maps a variable-length input signal to a fixed-length feature array, by taking the inner product of n-gram subsequences. Similarity of signals can then be evaluated, by any of the above approaches, in the kernel space. In this presentation, two variations on Goddard's approach are considered and evaluated: a string kernel using fuzzy rather than absolute k-means clustering; and a kernel in which the feature counts are preserved as waveforms rather than scalars, to address the reverse mapping problem.

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)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.273
Threshold uncertainty score0.622

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
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 head0.009
GPT teacher head0.258
Teacher spread0.249 · 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