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Ranking Structured Documents: A Large Margin Based Approach for Patent Prior Art Search

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Proceedings of the Twenty-First International Joint Conference on Artificial Intelligence. Pages 1058-1063.

Abstract

We propose an approach for automatically ranking structured documents applied to patent prior art search. Our model, SVM Patent Ranking (SVM_PR) incorporates margin constraints that directly capture the specificities of patent citation ranking. Our approach combines patent domain knowledge features with meta-score features from several different general Information Retrieval methods. The training algorithm is an extension of the Pegasos algorithm with performance guarantees, effectively handling hundreds of thousands of patent-pair judgements in a high dimensional feature space. Experiments on a homogeneous essential wireless patent dataset show that SVM_PR performs on average 30%-40% better than many other state-of-the-art general-purpose Information Retrieval methods in terms of the NDCG measure at different cut-off positions.Yunsong Guo, Carla Gomes

Yunsong Guo, and Carla P. Gomes. 2009. Ranking Structured Documents: A Large Margin Based Approach for Patent Prior Art Search. In Proceedings of the Twenty-First International Joint Conference on Artificial Intelligence, IJCAI-09. IJCAI, 1058–1063. https://ijcai.org/proceedings/2009/179
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