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Free Webinar - Luigi Ballabio on QuantLib Development - July 13th, 10am BST

 

All site blogs

Misery loves company: happiness and communication in the city

July 5, 2015 by Complexity Digest   Comments (0)

The high population density in cities confers many advantages, including improved social interaction and information exchange. However, it is often argued that urban living comes at the expense of reducing happiness. The goal of this research is to shed light on the relationship between urban communication and urban happiness. We analyze geo-located social media posts (tweets) within a major urban center (Milan) to produce a detailed spatial map of urban sentiments. We combine this data with...

US market portrait 2015 week 27

July 4, 2015 by Burns Statistics   Comments (0)

US large cap market returns. Fine print The data are from Yahoo The S&P 500 stocks are used (as implied by Wikipedia on 2015 January 11) that still survive with the same symbol The initial post was “Replacing market indices” The R code is in marketportrait_funs.R — you are free to use these functions however you like

Apache Spark in the Enterprise and in China

July 4, 2015 by The Practical Quant   Comments (0)

Enterprise AdoptionIBM's announcements at the recent Spark Summit in SF bodes well for enterprise adoption of Spark. Ben Horowitz jokingly referred to IBM's endorsement a Rabbi blessing Spark as kosher for use in an enterprise.I recently sat down with a set of luminaries at the Spark Summit and asked them about how Spark is perceived in enterprises. Below is a selection of responses:Mike Olson, Chairman and co-founder of Cloudera Martin Van Rysk, SVP of Engineering at Datastax Beth Smith, GM of...

The Broker Who Saved America

July 4, 2015 by The Reformed Broker   Comments (0)

You know Hancock and Washington and Franklin and Jefferson. You might even know Greene and Knox, Henry and Hale. But it is very unlikely that you know the name Haym Solomon....

Partitioning Uncertain Workflows

July 4, 2015 by Complexity Digest   Comments (0)

It is common practice to partition complex workflows into separate channels in order to speed up their completion times. When this is done within a distributed environment, unavoidable fluctuations make individual realizations depart from the expected average gains. We present a method for breaking any complex workflow into several workloads in such a way that once their outputs are joined, their full completion takes less time and exhibit smaller variance than when running in only one channel....

Talking Greece on the BBC & CNBC

July 4, 2015 by Steve Keen's Debtwatch   Comments (0)

I was interviewed on the BBC News Channel on Tuesday about the Greek crisis (see below) and I will be part of a CNBC panel “Squawk Box Special – Greece Decides” discussing the referendum results live as they roll in, from 8.30-9pm London time on Sunday.

U.S. Chamber of Commerce Forms Anti-Activist Coalition

July 3, 2015 by FINalternatives   Comments (0)

The U.S. Chamber of Commerce is throwing its hat into the growing battle between activist shareholders and corporate management teams. read more

Saratoga Rocks

July 3, 2015 by The Reformed Broker   Comments (0)

Spent a day and a half upstate in Saratoga Springs and had an amazing experience....

How a driverless car sees the road

July 3, 2015 by Complexity Digest   Comments (0)

Statistically, the least reliable part of the car is ... the driver. Chris Urmson heads up Google's driverless car program, one of several efforts to remove humans from the driver's seat. He talks about where his program is right now, and shares fascinating footage that shows how the car sees the road and makes autonomous decisions about what to do next.http://go.ted.com/bh7A See it on Scoop.it, via Talks

Greek Chaos Brings Valuation Headaches For Global Investors

July 3, 2015 by FINalternatives   Comments (0)

Investors who have even token exposure to Greece hope Athens will soon reopen its stock exchange so they can properly value their positions.  read more