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Record W1977655121 · doi:10.1145/1281192.1281229

Constraint-driven clustering

2007· article· en· W1977655121 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 Clustering Algorithms Research
Canadian institutionsSimon Fraser University
Fundersnot available
KeywordsCluster analysisComputer scienceConstrained clusteringData miningConstraint (computer-aided design)ScalabilityNode (physics)A priori and a posterioriTree (set theory)Correlation clusteringCURE data clustering algorithmMachine learningMathematicsDatabase

Abstract

fetched live from OpenAlex

Clustering methods can be either data-driven or need-driven. Data-driven methods intend to discover the true structure of the underlying data while need-driven methods aims at organizing the true structure to meet certain application requirements. Thus, need-driven (e.g. constrained) clustering is able to find more useful and actionable clusters in applications such as energy aware sensor networks, privacy preservation, and market segmentation. However, the existing methods of constrained clustering require users to provide the number of clusters, which is often unknown in advance, but has a crucial impact on the clustering result. In this paper, we argue that a more natural way to generate actionable clusters is to let the application-specific constraints decide the number of clusters. For this purpose, we introduce a novel cluster model, Constraint-Driven Clustering (CDC), which finds an a priori unspecified number of compact clusters that satisfy all user-provided constraints. Two general types of constraints are considered, i.e. minimum significance constraints and minimum variance constraints, as well as combinations of these two types. We prove the NP-hardness of the CDC problem with different constraints. We propose a novel dynamic data structure, the CD-Tree, which organizes data points in leaf nodes such that each leaf node approximately satisfies the CDC constraints and minimizes the objective function. Based on CD-Trees, we develop an efficient algorithm to solve the new clustering problem. Our experimental evaluation on synthetic and real datasets demonstrates the quality of the generated clusters and the scalability of the algorithm.

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: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.964
Threshold uncertainty score0.310

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 communication0.0000.000
Open science0.0010.001
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 head0.028
GPT teacher head0.321
Teacher spread0.294 · 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

Citations38
Published2007
Admission routes1
Has abstractyes

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