Impact of SVM Multiclass Decomposition Rules for Recognition of Cancer in Gastroenterology Images

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

Ricardo Sousa (Author) Other; Mario Dinis Ribeiro (Author) Other; Pedro Pimentel Nunes (Author) Other; Miguel Tavares Coimbra (Author) FCUP

Conference proceedings International

Title: 2013 IEEE 26TH INTERNATIONAL SYMPOSIUM ON COMPUTER-BASED MEDICAL SYSTEMS (CBMS)

Pages: 405-408

26th IEEE International Symposium on Computer-Based Medical Systems (CBMS)

Porto, PORTUGAL, JUN 20-22, 2013

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 2 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Other information

Authenticus ID: P-008-HZB

DOI: 10.1109/cbms.2013.6627827

Abstract (EN): In this work we study the impact of a set of bag-of-features strategies for the recognition of cancer in gastroenterology images. By using the SIFT descriptor, we analyzed the importance and performance impact of term weighting functions for the construction of visual vocabularies. Further analyzes were conducted in order to ascertain the robustness of multiclass decomposition rules for Support Vector Machines with different kernels. Our study was extended by tailoring a decomposition rule that explores prior knowledge according the four grades of the Singh taxonomy (SDR). We found that SDR coupled with a frequency term weight function attained the best overall results (80%) when trained with an intersection kernel. It also outperformed standard decomposition rules when using a chi(2) kernel and attained competitive performances with a linear kernel.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4