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Centre National de la Recherche Scientifique

TECHNICAL DETAILS ON THE NKRL FILTERING PROCEDURES Gian Piero ZARRI and Peizheng WU. Centre National de la Recherche Scientifique. General Strategy. Recap of the overall filtering strategy :

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Centre National de la Recherche Scientifique

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  1. TECHNICAL DETAILS ON THE NKRL FILTERING PROCEDURES Gian Piero ZARRI and Peizheng WU Centre National de la Recherche Scientifique EUFORBIA Open Meeting, Leatherhead13/09/02

  2. General Strategy Recap of the overall filtering strategy : • the filtering rules are associated with Euforbia concepts corresponding, e.g., to ICRA categories; • the specific rules defining the user’s ‘profile’ are collected in the MyRules.txt file; • the ‘Euforbia label’ (NKRL annotation) associated with the required site is unified with the set of rules in MyRules.txt; • according to the ‘negative filtering’ strategy proper to Euforbia, if one of these rules ‘unifies’, the site must be refused.

  3. Examples of rules (1) Some simple rules Only one condition (IF cond1  deny access): RULE1:IF a given site/site section praises topicslikeracism, violence, sexuality etc. THEN the site/site section must be refused (e.g., the sub-section ‘lyrics.shtml’ of ‘www.snoop-dogg.com’ site that advocates sexuality, violence and drug legalisation).

  4. Examples of rules (2) Two conditions (IF cond1  cond2  deny access): RULE4: IF a given site/section is devoted to spreading information over Internet AND this information concerns sexuality, violence, racism etc. THEN the site/section must be refused (e.g., the site ‘www.textesgais.com’, devoted to the diffusion of short stories about homosexuality). Three conditions (IF cond1  cond2  cond3  deny): RULE8: IF a site does not contain explicit nudity AND this site includes sections AND some of these show photos of women/teenagers dressed in bras or underwears THEN site or section(s) (according to the strategy) must be denied (e.g., sections ‘mixed-sheer- bras’ and ‘mixed- teen-bras’ of ‘http://softcoregp.com/bracity/’

  5. Examples of rules (3)

  6. Examples of rules (4)

  7. Annotation of the required site Textes Gais et Lesbiens (in French),www.textesgais.com (General Description Section) c1)(ENUM c2 c3 c4)(the Euforbia label is composed of three parts) c2) (COORD c5 c6)(the General Description section includes two items, c5 and c6) c5) OWN SUBJ textes_gais_et_lesbiens_site OBJ property_ TOPIC (SPECIF dedicated_to (SPECIF internet_publishing (SPECIF short_story_1 (SPECIF cardinality_ several_))) (the site is devoted to the Internet publishing of short stories) c6) OWN SUBJ short_story_1 OBJ property_ TOPIC homosexual_practice (the short stories are about homosexual practices)

  8. Rule processing (inference engine) (1)

  9. Rule processing (inference engine) (2)

  10. Results

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