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Research on Feature Extraction and Classification for Unstructured Data Based on Deep Learning

2024· article· en· W4407215276 on OpenAlex
Huayan Yu

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
TopicImage Processing and 3D Reconstruction
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsComputer scienceFeature extractionArtificial intelligenceFeature (linguistics)Pattern recognition (psychology)Unstructured dataMachine learningData miningBig data

Abstract

fetched live from OpenAlex

With the rapid growth of unstructured data such as text, images, audio, and video, traditional data analysis techniques are facing great challenges in dealing with the complexity and high dimensionality of such data. In this study, we propose a multimodal enhanced Transformer model to process and fuse different types of unstructured data by improving the self-attention mechanism and designing a multi-stream input architecture. Firstly, the model adopts a multi-stream input structure, each stream processes a data modality separately, and maps the data of each modality to the feature space of the same dimension through a dedicated preprocessing and coding network to form a unified representation. Subsequently, a cross-modal self-attention mechanism is introduced into the model, which can establish a global dependency between different modalities and automatically learn the correlation between modal features, so as to extract key features more accurately in the classification process. In order to reduce the computational complexity, an optimization algorithm based on sparse matrix is used to enable the model to efficiently process long sequences and high-dimensional data. Experimental analysis on the benchmark dataset shows that the proposed model is superior to the existing methods in terms of accuracy, precision and recall.

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 categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Other design · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.980
Threshold uncertainty score0.710

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0010.001
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 head0.112
GPT teacher head0.404
Teacher spread0.292 · 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

Citations1
Published2024
Admission routes1
Has abstractyes

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