5. Personalized Job Search
▪ Short and vague queries
–“San francisco”, “microsoft”
–Augment queries with searcher information
▪ Skill Homophily [Li, Ha-Thuc et al. KDD’16]
–“Classic” homophily: People tend to connect with similar ones
–Skill homophily: People tend to apply for jobs requiring similar skills
–Skills in job descriptions
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7. Reputation
Information a decision maker uses to make a
judgment on an entity with a record (*)
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(*) “Building web reputation systems”, Glass and Farmer, 2010
8. Skill Reputation Scores [Ha-Thuc et al. BigData’15]
8
▪ Decision Maker: searcher
▪ Record: Professional
career
▪ Skill reputation: member
expertise on a skill
▪ Judgment: Hire?
11. ▪ Why do we need this?
11
Personalized Federated Search - Motivation
12. Personalized Federated Model [Arya, Ha-Thuc et al. CIKM’15]
▪ Searcher intent
– Mine searcher profiles and past behavior to infer intent
▪ Title recruiter -> recruiting intent
▪ Search for jobs -> job seeking intent
– Machine-learned models predict member intents:
▪ Job seeking
▪ Recruiting
▪ Content consuming
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13. Calibrate Signals across Verticals
▪ Verticals associate with different intents
13
People Result
Job Result
Group Result
Recruiting
Intent
Job Seeking
Intent
Content
Consuming
Intent
14. Calibrate Signals across Verticals
▪ Verticals associate with different intents
14
People Result
Job Result
Group Result
Recruiting
Intent
Job Seeking
Intent
Content
Consuming
Intent
15. Calibrate Signals across Verticals
▪ Verticals associate with different intents
15
People Result
Job Result
Group Result
Recruiting
Intent
Job Seeking
Intent
Content
Consuming
Intent
16. Take-Aways
▪ Text match is still important but not enough
▪ Go beyond text
▪Semi-structured data
▪Behavioral data
▪ Collaborative filtering works for skill reputation
▪ Personalized Learning-to-Rank is crucial
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17. References
▪“Personalized Expertise Search at LinkedIn”, Ha-Thuc,
Venkataraman, Rodriguez, Sinha, Sundaram and Guo,
BigData, 2015
▪“Personalized Federated Search at LinkedIn”, Arya, Ha-
Thuc and Sinha, CIKM, 2015
▪“How to Get Them a Dream Job?”, Li, Arya, Ha-Thuc,
Sinha, KDD, 2016
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