2012 ActiveSamplingforEntityMatching

• (Bellare et al., 2012) ⇒ Kedar Bellare, Suresh Iyengar, Aditya G. Parameswaran, and Vibhor Rastogi. (2012). “Active Sampling for Entity Matching.” In: Proceedings of the 18th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD-2012). ISBN:978-1-4503-1462-6 doi:10.1145/2339530.2339707

Subject Headings:

Cited By

• http://scholar.google.com/scholar?q=%222012%22+Active+Sampling+for+Entity+Matching
• http://dl.acm.org/citation.cfm?id=2339530.2339707&preflayout=flat#citedby

Quotes

Author Keywords

• Active learning; clustering; data mining; deduplication; entity matching; imbalanced data

Abstract

In entity matching, a fundamental issue while training a classifier to label pairs of entities as either duplicates or non-duplicates is the one of selecting informative training examples. Although active learning presents an attractive solution to this problem, previous approaches minimize the misclassification rate (0-1 loss) of the classifier, which is an unsuitable metric for entity matching due to class imbalance (i.e., many more non-duplicate pairs than duplicate pairs). To address this, a recent paper [1] proposes to maximize recall of the classifier under the constraint that its precision should be greater than a specified threshold. However, the proposed technique requires the labels of all n input pairs in the worst-case. Our main result is an active learning algorithm that approximately maximizes recall of the classifier while respecting a precision constraint with provably sub-linear label complexity (under certain distributional assumptions). Our algorithm uses as a black-box any active learning module that minimizes 0-1 loss. We show that label complexity of our algorithm is at most log n times the label complexity of the black-box, and also bound the difference in the recall of classifier learnt by our algorithm and the recall of the optimal classifier satisfying the precision constraint. We provide an empirical evaluation of our algorithm on several real-world matching data sets that demonstrates the effectiveness of our approach.

References

;

	Author	volume	Date Value	title	type	journal	titleUrl	doi	note	year
2012 ActiveSamplingforEntityMatching	Vibhor Rastogi Kedar Bellare Suresh Iyengar Aditya G. Parameswaran			Active Sampling for Entity Matching				10.1145/2339530.2339707		2012