{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T13:30:13Z","timestamp":1760707813545},"reference-count":29,"publisher":"Association for Computing Machinery (ACM)","issue":"1","content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Internet Technol."],"published-print":{"date-parts":[[2007,2]]},"abstract":"<jats:p>The World Wide Web has enabled anybody with a low cost Internet connection to access vast information repositories. Some of these repositories contain information (e.g., hate speech and pornography) that is considered objectionable, especially for children to view. Several efforts---legal and technical---are underway to protect children and the generic public from accessing this type of content. We propose a technical approach utilizing a recently proposed technique called isotonic separation for filtering with content metadata if they satisfy monotone conditions. We illustrate this approach using a category rating method of PICS. In essence, we formulate the Internet content filtering problem as a classification problem on content metadata and report on experiments we conducted with the isotonic separation technique.<\/jats:p>","DOI":"10.1145\/1189740.1189741","type":"journal-article","created":{"date-parts":[[2007,4,5]],"date-time":"2007-04-05T19:20:08Z","timestamp":1175800808000},"page":"1","update-policy":"http:\/\/dx.doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":12,"title":["Internet content filtering using isotonic separation on content category ratings"],"prefix":"10.1145","volume":"7","author":[{"given":"Varghese S.","family":"Jacob","sequence":"first","affiliation":[{"name":"The University of Texas at Dallas"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ramayya","family":"Krishnan","sequence":"additional","affiliation":[{"name":"Carnegie Mellon University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Young U.","family":"Ryu","sequence":"additional","affiliation":[{"name":"The University of Texas at Dallas"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2007,2]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"Ahuja R. K. Magnanti T. L. and Orlin J. B. 1993. Network Flows. Prentice-Hall Englewood Cliffs NJ.  Ahuja R. K. Magnanti T. L. and Orlin J. B. 1993. Network Flows. Prentice-Hall Englewood Cliffs NJ."},{"key":"e_1_2_1_2_1","volume-title":"Internet: A best practice model. Working paper","author":"Balkin J. M.","year":"1999","unstructured":"Balkin , J. M. , Noveck , B. S. , and Roosevelt , K . 1999 . Filtering the Internet: A best practice model. Working paper , Yale Information Society Project, Yale Law School . Balkin, J. M., Noveck, B. S., and Roosevelt, K. 1999. Filtering the Internet: A best practice model. Working paper, Yale Information Society Project, Yale Law School."},{"key":"e_1_2_1_3_1","unstructured":"Barlow R. E. Bartholemew D. J. Bremner J. M. and Brunk H. D. 1972. Statistical Inference under Order Restrictions. John Wiley &amp; Sons New York.  Barlow R. E. Bartholemew D. J. Bremner J. M. and Brunk H. D. 1972. Statistical Inference under Order Restrictions. John Wiley &amp; Sons New York."},{"key":"e_1_2_1_4_1","volume-title":"Tech. Rep. REC-rdf-schema-20040210","author":"Brickley D.","year":"2004","unstructured":"Brickley , D. and Guha , R. V . 2004 . RDF vocabulary description language 1.0: RDF schema. Tech. Rep. REC-rdf-schema-20040210 , World Wide Web Consortium . Brickley, D. and Guha, R. V. 2004. RDF vocabulary description language 1.0: RDF schema. Tech. Rep. REC-rdf-schema-20040210, World Wide Web Consortium."},{"key":"e_1_2_1_5_1","unstructured":"Brickley D. and Swick R. R. 2000. PICS rating vocabularies in XML\/RDF. Tech. Rep. REC-rdf-pics-20000327 World Wide Web Consortium.  Brickley D. and Swick R. R. 2000. PICS rating vocabularies in XML\/RDF. Tech. Rep. REC-rdf-pics-20000327 World Wide Web Consortium."},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0031-3203(93)90060-A"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dss.2004.11.015"},{"key":"e_1_2_1_8_1","unstructured":"Chandrasekaran R. Ryu Y. U. and Jacob V. 1998. Breast cancer diagnosis using an isotonic separation approach. Working paper Department of Information Systems and Operations Management School of Management The University of Texas at Dallas.  Chandrasekaran R. Ryu Y. U. and Jacob V. 1998. Breast cancer diagnosis using an isotonic separation approach. 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F. , Langheinrich , M. , Marchiori , M. , Presler-Marshall , M. , and Reagle , J . 2002 . The platform for privacy preferences 1.0 (P 3P1.0) specification. Tech. Rep. REC-P3P-20020416 , World Wide Web Consortium . Cranor, L. F., Langheinrich, M., Marchiori, M., Presler-Marshall, M., and Reagle, J. 2002. The platform for privacy preferences 1.0 (P3P1.0) specification. Tech. Rep. REC-P3P-20020416, World Wide Web Consortium."},{"key":"e_1_2_1_15_1","volume-title":"Tech. Rep. REC-PICSRules-971229","author":"Evans C.","year":"1997","unstructured":"Evans , C. , Feather , C. D. W. , Hopmann , A. , Presler-Marshall , M. , and Resnick , P . 1997 . PICSRules 1.1 specification. Tech. Rep. REC-PICSRules-971229 , World Wide Web Consortium . Evans, C., Feather, C. D. W., Hopmann, A., Presler-Marshall, M., and Resnick, P. 1997. PICSRules 1.1 specification. Tech. Rep. REC-PICSRules-971229, World Wide Web Consortium."},{"key":"e_1_2_1_16_1","unstructured":"Garfinkel S. 1997. Web Security &amp; Commerce. O'Reilly &amp; Associates Inc. Sebastopol CA.   Garfinkel S. 1997. Web Security &amp; Commerce. O'Reilly &amp; Associates Inc. Sebastopol CA."},{"key":"e_1_2_1_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0167-9236(02)00110-0"},{"key":"e_1_2_1_18_1","volume-title":"Tech. Rep. REC-PICS-labels-961031","author":"Krauskopf T.","year":"1996","unstructured":"Krauskopf , T. , Miller , J. , Resnick , P. , and Treese , W . 1996 . PICS label distribution label syntax and communication protocols, version 1.1. Tech. Rep. REC-PICS-labels-961031 , World Wide Web Consortium . Krauskopf, T., Miller, J., Resnick, P., and Treese, W. 1996. PICS label distribution label syntax and communication protocols, version 1.1. Tech. Rep. REC-PICS-labels-961031, World Wide Web Consortium."},{"key":"e_1_2_1_19_1","volume-title":"Tech. Rep. REC-rdf-primer-20040210","author":"Manola F.","year":"2004","unstructured":"Manola , F. and Miller , E . 2004 . RDF primer. Tech. Rep. 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