Negobot: A conversational agent based on game theory for the detection of paedophile behaviour -...
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![Page 1: Negobot: A conversational agent based on game theory for the detection of paedophile behaviour - CISIS 2012](https://reader035.fdocuments.in/reader035/viewer/2022062616/5497a3b5b47959a7498b4856/html5/thumbnails/1.jpg)
NEGOBOTA conversational agent based on gametheory for the detection of paedophile
behaviour
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Children have become active users of the Internet
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One of the worst problems in cyber-society is
paedophile behaviour
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Commercial systems
analyse conversationsto automatically classify them
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Our approach?
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Meet:
NEGOBOT
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Objective:To detect paedophile
behaviour
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As a chatter bot, negobot “knows” about:
Natural Language Processing
Information Retrieval
Automatic Learning
Game theory
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Negobot’s architecture
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AI’s system knowledge
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Gathering groups of representative conversations
considered offensive.
http://www.perverted-justice.com
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1377 conversations
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We use Lucene in order to rank how similar areNegobot’s conversations with actual paedophile’sconversations
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A system tounderstand the conversations
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Replacing“emoticons”
SMS-like wordingtranslation
Correctingmisspelled words
1
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Question-answering patterns(AIML) 2
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Random responsewaiting times
Colloquial andSMS-like language
Forcedlanguage errors
3
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Game theory
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A structure of seven
chatterbots, with different behaviours 1
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Conversation level
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An evaluation function to classify, in real time, the
current conversation 2
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𝒇 (𝒙 )=𝑨+𝑩+𝑪
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𝒇 (𝒙 )=𝑨𝑨=𝑪𝒐𝒏𝒗𝒆𝒓𝒔𝒂𝒕𝒊𝒐𝒏𝑯𝒊𝒔𝒕𝒐𝒓𝒚
𝑩=𝑪𝒖𝒓𝒓𝒆𝒏𝒕 𝑪𝒐𝒏𝒗𝒆𝒓𝒔𝒂𝒕𝒊𝒐𝒏 𝒍𝒆𝒗𝒆𝒍
𝑪=𝑻𝒊𝒎𝒆𝒃𝒆𝒕𝒘𝒆𝒆𝒏𝒄𝒐𝒏𝒗𝒆𝒓𝒔𝒂𝒕𝒊𝒐𝒏𝒔
+𝑩+𝑪
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Functional flow
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EXAMPLES
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Passiveconversation
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Aggresiveconversation
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Limitations?
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The key is the language
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Future?
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WSD, opinion mining, …
ImproveAIML
Collaborativeagents
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Working with the Spanish’ Cyber-crime unit…
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…trying to find those monsters
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References1. Little girl:
http://4.bp.blogspot.com/-qoMi9XA-pfE/UD4Il8NOF3I/AAAAAAAADH4/Dy83sETvTgI/s0/Bank+Interview+Tips.jpg
2. Predator: http://1.bp.blogspot.com/-ZkA7FRuhLu8/TouRfRHOwmI/AAAAAAAAahc/9auIEO8M1m4/s400/pedofilia%2B9%255B5%255D.jpg
3. Conversation icon: http://www.vendorregistry.com/images/home-slides/conversation-icon.png?sfvrsn=0
4. Lighthouse: http://lucaskrech.com/blog/wp-content/uploads/2010/04/lighthouse4tracing.jpg
5. Human brain: http://www.whyworrybook.com/wp-content/uploads/2013/01/canstockphoto1694623-2-brain-with-shooting-lines.jpg
6. Reveal-listen-understanding: http://2.bp.blogspot.com/-HXGhx9-CNts/UhWpYnBvSDI/AAAAAAAAAIE/Ic7EPi-f94A/s1600/understanding.jpg
7. Chess: http://2.bp.blogspot.com/-5_3295FDOd4/UcQvY6s05uI/AAAAAAAAa4I/IF9Pf_Qxa2w/s1600/Chess+HD+Pictures7.jpg
8. Prison: http://www.ereverev.co.il/UploadImg/Articles/12826.jpg