PhD Defense - A Context Management Framework based on Wisdom of Crowds for Social Awareness Applications

A Context Management Framework based on Wisdom of Crowds for Social Awareness applications Adrien JOLY PhD Candidate, supervisor: Prof. Pierre MARET, LaHC CIFRE: Alcatel-Lucent Bell Labs France + INSA-Lyon, LIRIS, UMR5205

Un cadre de Gestion de Contextes fondé sur l’Intelligence Collective pour améliorer l’efficacité des applications de Communication Sociale Adrien JOLY CIFRE: Alcatel-Lucent Bell Labs France + INSA-Lyon, LIRIS, UMR5205 Encadré par: Prof. Pierre MARET (LaHC), Johann Daigremont (ALBLF)

[object Object],[object Object],[object Object],[object Object],[object Object],Agenda of this presentation

Context Approach Framework Evaluation Conclusion A PhD thesis in a moving industrial research lab ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion Introduction to social networks and information overload “ Aware” user ,[object Object],Activities / Status Updates / Contacts

Context Approach Framework Evaluation Conclusion Introduction to social networks and information overload “ Aware” user Activities / Status Updates / Contacts ,[object Object],Information overload* * aka Cognitive Overflow Syndrome [Lahlou 1997]

Context Approach Framework Evaluation Conclusion Introduction to social networks and information overload Filter “ Aware” user Activities / Status Updates / Contacts Needed ,[object Object],and productive

Context Approach Framework Evaluation Conclusion Problem statement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion State of the Art: Computer-Supported Collaborative Work ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion State of the Art: content-based filtering ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion State of the Art: collaborative filtering ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion Proposal: context-aware filtering ,[object Object],[object Object],[object Object],[object Object],Java Dev I/O PHP Similar contexts Physical, virtual and social sensors Open set of context features User’s activity Recommend social updates

Context Approach Framework Evaluation Conclusion Research issues ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Agenda of this presentation ,[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion Similarity of context, our hypothesis ,[object Object],[object Object],Hypothesis: I A is relevant to U X if C A is similar to C X A A = Travel in Asia U A = Alice I A = « Check out my amazing picture ! » A B = Working Java U B = Bob I B = « What database should I use ? » A C = Browsing map U C = Christine I C = « Looking for holiday locations… »

Context Approach Framework Evaluation Conclusion Similarity of context, our hypothesis ,[object Object],[object Object],Hypothesis: I A is relevant to U X if C A is similar to C X C A = Travel, Asia C C = Travel C B = Java Dev. A A = Travel in Asia U A = Alice A B = Working Java U B = Bob I B = « What database should I use ? » A C = Browsing map U C = Christine I C = « Looking for holiday locations… » Similar context: travel No relevant match for this context I A = « Check out my amazing picture ! »

Context Approach Framework Evaluation Conclusion What is context ? ,[object Object],[object Object],[object Object],[object Object],Location Surrounding people Other sensors Communication history Web browsing history Document history

Context Approach Framework Evaluation Conclusion From physical context sensors to applications – usual approach Context sensors Applications Interpretation Acquisition db ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Context Management Framework

Context Approach Framework Evaluation Conclusion From physical, virtual and social context sensors to applications – our approach Context Management Framework Context sensors Social Applications Interpretation Acquisition db ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Updates Paris Notre-Dame Café Cloudy Crowded Sitting with:Pierre

Context Approach Framework Evaluation Conclusion Our approach, the “Big Picture” ,[object Object],[object Object],[object Object],[object Object],[object Object],Mario is shopping near Chatelet Mario: « let’s grab a coffee at SB ! » Alice has just shared a photo [ view ] Lucie is listening to Californication [ i like this ] Kevin: « new McChicken is great! » Car incident 32 meters away Alice GPS Wifi McDonald’s restaurant Radio currently playing a song Christine

Context Approach Framework Evaluation Conclusion Context Aggregation and Filtering process Social updates Aggregator Sniffers Notifier Filter User Actions and tags Contextual clouds Notifications Context Interfaces Abstraction and weighting Services

Context Approach Framework Evaluation Conclusion Considering a first context dimension: browsing activity Social updates Aggregator Sniffers Notifier Filter User Actions and tags Contextual clouds Notifications Context Interfaces Abstraction and weighting Services ,[object Object],[object Object]

Context Approach Framework Evaluation Conclusion How to synthesize the contextual tag cloud from web browsing ? The user opens a web page…

Context Approach Framework Evaluation Conclusion How to synthesize the contextual tag cloud from web browsing ? Low level and static author description Automatic content analysis Mining semantic concepts from content People-entered tags (wisdom of crowds) 1) URL is sent to the Context Aggregator 2) Content is analyzed by enhancers (including web services)

Context Approach Framework Evaluation Conclusion Contextual Tag Clouds, vector space model and algebra Sample tag cloud R : (normalized) ,[object Object],[object Object],[object Object],[object Object],0.1 0.1 0.3 0.5 « Discount » « Flight » « Asia » « Travel »

Context Approach Framework Evaluation Conclusion Contextual Tag Clouds, extraction and enhancement functions ,[object Object],Title Keywords Description Parameters = 50 = 10 = 1

Context Approach Framework Evaluation Conclusion Contextual Tag Clouds, extraction and enhancement functions ,[object Object],2. Search Query ambient, awareness 3. Resource Location video, all, alcatel-Lucent

Context Approach Framework Evaluation Conclusion Contextual Tag Clouds, extraction and enhancement functions ,[object Object],w poster = 11, w work = 11, w gtd = 10, w done = 10, w inspiration = 7, …

Context Approach Framework Evaluation Conclusion Contextual Tag Clouds, extraction and enhancement functions ,[object Object],MIT, Tim Berners-Lee, …

Context Approach Framework Evaluation Conclusion Context Aggregation and Filtering process –- in the enterprise Social updates Aggregator Sniffers Notifier Filter User Actions and tags Contextual clouds Notifications Context Interfaces Abstraction and weighting Services

Context Approach Framework Evaluation Conclusion Implementation Firefox extension (Javascript) to track web browsing Windows daemon (C++) to track opened PDF documents Lightweight HTTP Server (Java) + 5 tag extractors (Java) incl. 2 web service wrappers Jetty-based HTTP Server (Java) DWR for server-push (Java) Off-line scripts (Java+shell) Firefox sidebar (HTML+Javascript) Mobile application (Java for android) Aggregator Sniffers Notifier Filter Social updates User Actions and tags Contextual clouds Notifications Context Interfaces Abstraction and weighting Services

Context Approach Framework Evaluation Conclusion Demonstration of the ECN prototype ,[object Object],[object Object]

Context Approach Framework Evaluation Conclusion Requirements and plan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],(1 week) 2 personalized surveys per user Indexing as tags clouds & Matching contexts

Context Approach Framework Evaluation Conclusion From browsing activity to social matching Temporal indexing period = 10 mn. Common tags: JAVA, DEV Common tags: TRAVEL  Recommend u5’s social update to u1  Recommend u3’s social update to u7

Context Approach Framework Evaluation Conclusion 1. Relevance of social updates based on contextual similarity Matching

Context Approach Framework Evaluation Conclusion Survey #1 ,[object Object],1 2 3 4 1 2 3 4 ,[object Object]

Context Approach Framework Evaluation Conclusion Survey #1 results 1/2 ,[object Object],[object Object]

Context Approach Framework Evaluation Conclusion Survey #1 results 2/2 ,[object Object],Accuracy

Context Approach Framework Evaluation Conclusion 2. Relevance of social updates to the context of their posting

Context Approach Framework Evaluation Conclusion Survey #2 ,[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion 3. Differences between context from virtual and social sensors Combining virtual and social sensors: good compromise between quantity and quality of matches 280k Number of matches 40k 170k 130k 70k 10k Low precision matches High precision matches

Context Approach Framework Evaluation Conclusion Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion Contributions and findings ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Context Approach Framework Evaluation Conclusion Future work ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

www.alcatel-lucent.com Thank you for your attention! Merci pour votre attention !

PhD Defense - A Context Management Framework based on Wisdom of Crowds for Social Awareness Applications

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