Seongung Jo, Heung-Seon Oh, Sanghun Im, Seonho Kim

KIPS Transactions on Computer and Communication Systems, Vol. 9, No. 10, pp. 231-238, Oct. 2020
https://doi.org/10.3745/KTCCS.2020.9.10.231,   PDF Download:
Keywords: Deep Learning, CNN, Novelty Detection
Abstract

With a large number of documents appearing on the web, document-level novelty detection has become important since it can reduce the efforts of finding novel documents by discarding documents sharing redundant information already seen. A recent work proposed a convolutional neural network (CNN)-based novelty detection model with significant performance improvements. We observed that it has a restriction of using document-level information in determining novelty but assumed that the document-level information is more important. As a solution, this paper proposed two methods of effectively incorporating document-level information using a CNN-based novelty detection model. Our methods focus on constructing a feature vector of a target document to be classified by extracting relative information between the target document and source documents given as evidence. A series of experiments showed the superiority of our methods on a standard benchmark collection, TAP-DLND 1.0.

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