negobot: a conversational agent based on game theory for the detection of paedophile behaviour -...
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Presentation at CISIS 2012 International conference of the paper: Negobot: A conversational agent based on game theory for the detection of paedophile behaviourTRANSCRIPT
NEGOBOTA conversational agent based on gametheory for the detection of paedophile
behaviour
Children have become active users of the Internet
One of the worst problems in cyber-society is
paedophile behaviour
Commercial systems
analyse conversationsto automatically classify them
Our approach?
Meet:
NEGOBOT
Objective:To detect paedophile
behaviour
As a chatter bot, negobot “knows” about:
Natural Language Processing
Information Retrieval
Automatic Learning
Game theory
Negobot’s architecture
AI’s system knowledge
Gathering groups of representative conversations
considered offensive.
http://www.perverted-justice.com
1377 conversations
We use Lucene in order to rank how similar areNegobot’s conversations with actual paedophile’sconversations
A system tounderstand the conversations
Replacing“emoticons”
SMS-like wordingtranslation
Correctingmisspelled words
1
Question-answering patterns(AIML) 2
Random responsewaiting times
Colloquial andSMS-like language
Forcedlanguage errors
3
Game theory
A structure of seven
chatterbots, with different behaviours 1
Conversation level
An evaluation function to classify, in real time, the
current conversation 2
𝒇 (𝒙 )=𝑨+𝑩+𝑪
𝒇 (𝒙 )=𝑨𝑨=𝑪𝒐𝒏𝒗𝒆𝒓𝒔𝒂𝒕𝒊𝒐𝒏𝑯𝒊𝒔𝒕𝒐𝒓𝒚
𝑩=𝑪𝒖𝒓𝒓𝒆𝒏𝒕 𝑪𝒐𝒏𝒗𝒆𝒓𝒔𝒂𝒕𝒊𝒐𝒏 𝒍𝒆𝒗𝒆𝒍
𝑪=𝑻𝒊𝒎𝒆𝒃𝒆𝒕𝒘𝒆𝒆𝒏𝒄𝒐𝒏𝒗𝒆𝒓𝒔𝒂𝒕𝒊𝒐𝒏𝒔
+𝑩+𝑪
Functional flow
EXAMPLES
Passiveconversation
Aggresiveconversation
Limitations?
The key is the language
Future?
WSD, opinion mining, …
ImproveAIML
Collaborativeagents
Working with the Spanish’ Cyber-crime unit…
…trying to find those monsters
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