Social Search Quality SignalsReal Time Quality SignalsDan Zarrella@DanZarrellahttp://DanZarrella.com

The ProblemWeb Search is Broken.

Web Search is Too SlowPage to page links are too slowHours or days to be createdDays or weeks to be indexedNew Content takes hours or days to find

Social News SitesHours or days to produce a signal of high qualityToo small & niche

Social NetworksFacebook (et al) too closed for real API accessIn-network/connection & scoping & privacy issues

The SolutionTwitter for Real Time Signals

ReTweeting is Link Sharing

New Content is Often ReTweeted

Possible FlawsNot Even Twitter is Perfect

Rich Get Richer

Sock Puppet Accounts79.79% failed to provide a homepage URL75.86% of users have not entered a bio68.68% have not specified a location55.50% are not following anyone54.88% have never tweeted52.71% have no followers

The AlgorithmThe Math

ReTweets-per-Follower (R0) # of Tweets divided by the number of followers of those who tweeted itRT/followers = R0

# of Tweets divided by the number of followers of those who tweeted it

RT/followers = R0

TweeterAuthorityCitation-style AuthorityMentions-per-Day = TweeterAuthority

Combined MetricR0* Sum(TweeterAuthority of Users Who Tweeted)

Relevance SignalThe other words retweeted with a link(Co-Occurrence with Link/RTs) / (Total Occurences/SampleSet)

The other words retweeted with a link

Thank You!Dan Zarrella@DanZarrellahttp://DanZarrella.com