Archive for the Analytics category

Kristina Lerman
Kristina Lerman

Why your friends have more to be thankful for

Analytics, Social Networks

As Thanksgiving approaches, it may feel like everyone else has so much more to be thankful for. Just check your Facebook, Twitter or Instagram: your friends seem to dine at finer restaurants, take more exotic vacations, and attend more exciting parties. Research suggests this is not simply a matter of perception, but a mathematical fact […]

Read more
Kristina Lerman
Kristina Lerman

The Curses of Heterogeneity in Big Data

Analytics, Big Data

“Both theoretical and empirical research may be unnecessarily complicated by failure to recognize the effects of heterogeneity” – Vaupel & Yashin Big Data is daily topic of conversation among data analysts, with much said and written about its promises and pitfalls. The issue of heterogeneity, however, has received scant attention. This is unfortunate, since failing […]

Read more
H. V. Jagadish
H. V. Jagadish

Big Data: It’s Not Just the Analytics

Analytics, Big Data

I was recently approached by an entrepreneur who had an interesting way to correlate short term performance of a stock with news reports about the stock. Needless to say, there are many places from which one can get the news, and what results one gets from this sort of analysis does depend on the input […]

Read more
Joseph Hellerstein
Joseph Hellerstein

MADlib: An Open-Source Library for Scalable Analytics

Analytics

tl;dr: MADlib is an open-source library of scalable in-database algorithms for machine learning, statistics and other analytic tasks. MADlib is supported with people-power from Greenplum; researchers at Berkeley, Florida and Wisconsin are also contributing. The project recently released a MADlib TR, and is now welcoming additional community contributions. Warehousing → Science Back in 2008, I […]

Read more