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Improving automatic query classification via semi-supervised learning (2005)
| Content Provider | CiteSeerX |
|---|---|
| Author | Beitzel, Steven M. Jensen, Eric C. Frieder, Ophir |
| Description | Accurate topical classification of user queries allows for increased effectiveness and efficiency in general-purpose web search systems. Such classification becomes critical if the system is to return results not just from a general web collection but from topic-specific back-end databases as well. Maintaining sufficient classification recall is very difficult as web queries are typically short, yielding few features per query. This feature sparseness coupled with the high query volumes typical for a large-scale search service makes manual and supervised learning approaches alone insufficient. We use an application of computational linguistics to develop an approach for mining the vast amount of unlabeled data in web query logs to improve automatic topical web query classification. We show that our approach in combination with manual matching and supervised learning allows us to classify a substantially larger proportion of queries than any single technique. We examine the performance of each approach on a real web query stream and show that our combined method accurately classifies 46 % of queries, outperforming the recall of best single approach by nearly 20%, with a 7 % improvement in overall effectiveness. 1. In The Fifth IEEE International Conference on Data Mining |
| File Format | |
| Language | English |
| Publisher | IEEE Computer Society |
| Publisher Date | 2005-01-01 |
| Access Restriction | Open |
| Subject Keyword | Overall Effectiveness Single Technique Real Web Query Stream Semi-supervised Learning Manual Matching Topic-specific Back-end Database Automatic Query Classification Increased Effectiveness Accurate Topical Classification Single Approach Computational Linguistics Automatic Topical Web Query Classification High Query General Web Collection Large-scale Search Service Unlabeled Data Feature Sparseness User Query General-purpose Web Search System Vast Amount Combined Method Sufficient Classification Recall Web Query Web Query Log |
| Content Type | Text |
| Resource Type | Article |
