Modeling Semantics of Content on Twitter

What did you mean when you said yoyo?

Ebrahim BagheriLaboratory for Systems, Software and Semantics (LS3)

@ebrahim_bagheri

A study in child health journal Acta Paediatrica compared the physical fitness of 315 ten-year-olds

in 2008 with 1998.

Over the same period the arm strength of children fell by 26 per cent, while their grip strength declined by 7 per cent.

The number of sit-ups fell by 27 per cent over the decade.

5% of children were unable to hold their own weight when hanging from a bar in 1998. Ten years later, that figure had doubled to 10%.

Social Impact and Influence

1/3 of respondents had no one in “the real world” with whom to discuss their epilepsy.

2/3 of respondents reported a connection to at least one other person with epilepsy after joining PatientsLikeMe.

59% reported that the site has given them a better understanding of their seizures.

23% of respondents reported fewer visits to the ER.

28% reported that they felt more control over their condition after joining PatientsLikeMe.

49% of respondents reported that recording their seizures helps them manage their condition.

50% Reported that PatientsLikeMe helped them understand their side effects.

Sample Dataset Behavior

Free Riding Behavior?

Semantic Analysis of Tweets

“OMG! Cate Blanchett won the Best Actress Academy Award for Woody Allen's film #excited #oscars”

https://en.wikipedia.org/wiki/Woody_Allen

https://en.wikipedia.org/wiki/Cate_Blanchett

14

https://en.wikipedia.org/wiki/Academy_Awards

Ambiguity?

Ambiguity?

Disambiguation• The objective:

– for each ‘spot’ (i.e., mention spotted in the text), select the entity/entities that properly reflect(s) the semantics of the spot

– the selection is done from, often numerous, candidate entities.

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“They performed Kashmir, written by Page and Plant. Page played unusual chords on his Gibson.”

Wikipedia:Kashmir – a valley between Pakistan, India and LadakhWikipedia:Kashmir_(band) – a Danish rock bandWikipedia:Kashmir_(song) – 1975 song by rock band Led ZeppelinWikipedia:Kashmir,_Iran – a village in Iran…

Sense Dominance

Can we determine the likelihood of a sense?

Concept Distribution

Noise Detection

More Noise

Constant power spectral density

Unsupervised Topic Detection

Concept Lifecycle - Behavior

Clustering the Correlation Graph

Temporal and Topic Sensitive Communities

User Contributions to Topics

Com

mun

ity C

olle

ctive

Beh

avio

r

Users in C5 contribute to three topics:• Santa Claus (t9),• Tornado during New Year celebrations (t30)• Thanksgiving (t37) Users in C6 contribute to  t30 in the same time intervals but they do not contribute to t9 and t30;

News Recommendation

Implicit Interests

Collaborative Semantic

Topic Relatedness

Part of Speech Distribution

Noticeable Semantic Shift

Semantic Relatedness Distribution

So what does “yoyo” mean on Twitter?