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Sometimes collaborative filtering and text mining does not work so well
Added by Håkan Jonsson on February 23, 2010 at 3:10pm — No Comments
R-bloggers - sharing R related content from the "R blogoshpere)
I already wrote about R-bloggers on my blog, so it only seems fitting to republish it here. I will explain what R-bloggers is and then…
ContinueAdded by Tal Galili on February 17, 2010 at 1:00pm — No Comments
Only one degree of separation with Barack Obama
Social networks have made it possible for people to be more closely related than ever before. Actually, I'm much closer to Bill Gates than Barack Obama, in real life. I'd expect (in real life, as opposed to online) that my degrees of separation with the US President would be 4 or 5, and 3 with… Continue
Added by Vincent Granville on February 15, 2010 at 11:30pm — 2 Comments
How to fight swine flu with digital technology?
PHILADELPHIA (AP) -- A tap on the HealthMap iPhone application brings up a cluster of red pins on a map, representing nearby cases of swine flu. Another tap brings up a form for ordinary Americans to add to the collection by reporting bouts they have or know about.
HealthMap Outbreaks Near Me is among scores of iPhone apps, along with social networks, Wikipedia and flu-tracking sites, that give… Continue
Added by Vincent Granville on February 15, 2010 at 11:00pm — 1 Comment
Rise of the Machines: How "Quant" Trading Triggered the Credit Crisis
Added by Vincent Granville on February 14, 2010 at 8:51pm — 2 Comments
Fewer patents submitted in 2009: a sign that US is less innovative? Maybe just the contrary.
- By submitting a patent, your idea can get stolen (e.g. by the patent Attorneys)
- For analytic algorithms, it is much more important to be protected against reverse engineering (a…
Added by Vincent Granville on February 13, 2010 at 11:30pm — No Comments
Factor models and the credit risk of a loan portfolio
Palombini, Edgardo (2009): Factor models and the credit risk of a loan portfolio. Unpublished.
Abstract
Factor models for portfolio credit risk assume that defaults are independent conditional on a small number of systematic factors. This paper shows that the conditional independence assumption may be violated in one-factor models with constant default thresholds, as…
ContinueAdded by John A Morrison on February 11, 2010 at 12:57am — No Comments
Evaluating Value-at-Risk models via Quantile Regression
AUTHORS
Wagner Piazza Gaglianone
Luiz Renato Lima
Oliver Linton
Daniel Smith
ABSTRACT
This paper is concerned with evaluating value at risk estimates. It is well known that using only binary variables, such as whether or not there was an exception, sacrifices too much information. However, most of the specification tests (also called backtests) available…
ContinueAdded by John A Morrison on February 11, 2010 at 12:34am — No Comments
AN AREA-WIDE REAL-TIME DATABASE FOR THE EURO AREA - European Central Bank
Added by John A Morrison on February 11, 2010 at 12:25am — No Comments
Credit and banking in a DSGE model of the euro area BANCA D'ITALIA
Credit and banking in a DSGE model of the euro area
by Andrea Gerali, Stefano Neri, Luca Sessa and Federico Maria Signoretti
(Working Paper) Number 740
Abstract
This paper studies the role of credit-supply factors in business cycle fluctuations. For this purpose, we introduce an imperfectly competitive banking sector into a DSGE model with financial frictions. Banks issue collateralized loans to both households and firms, obtain funding via deposits and…
Added by John A Morrison on February 11, 2010 at 12:18am — No Comments
Vendor models for credit risk measurement and management - Basel Committee
Vendor models for credit risk measurement and management
BCBS Working Papers No 17
February 2010
the Research Task Force of the Basel Committee initiated a review of selected vendor credit-risk products, focusing on models that could be used to estimate probability of default, loss-given-default, or exposure at default, and models that could be used to assign ratings or produce credit scores, for wholesale or retail credit exposures. This paper provides a high-level…
ContinueAdded by John A Morrison on February 11, 2010 at 12:10am — No Comments
Test Data Wanted
For more info see Muitovar. Don't forget to have a look at the 3635 rules for… Continue
Added by Hans van Thiel on February 10, 2010 at 1:32pm — No Comments
ACM Newsletter
To sign up: www.acm.org
DARPA's New Plans: Crowdsource Intel, Edit DNA
Wired News (02/02/10) Drummond, Katie
The U.S. Defense Advanced Research Projects Agency's (DARPA's) future plans call for crowdsourcing military
intelligence, creating an immune system for Defense Department networks, and
conducting research that could lead to editing soldiers' DNA. DARPA wants to
improve how the… Continue
Added by Vincent Granville on February 7, 2010 at 12:42pm — No Comments
Call for Chapters
Proposals Submission Deadline: 3/15/2010
Management Engineering for Effective Healthcare Delivery:
Principles and Applications
A book edited by Dr. Alexander Kolker, PhD (Children’s Hospital and Health System, USA) and Pierce Story (Managing Director, Jumbee Corporation, USA)
To be published by IGI Global:… Continue
Added by Alexander Kolker on January 31, 2010 at 9:55pm — No Comments
Two new startup ideas: online reputation protection, social network competitive intelligence
#1 Online reputation protection
Helping companies find bad comments posted by disgruntled employees or competitors, and fight back by diluting the bad content, via automated posting of positive messages in relevant blogs. Also helping individuals recover from postings (from themselves or other people) that might…
Added by Vincent Granville on January 30, 2010 at 5:00pm — 2 Comments
Predicting Space Weather
Scientific theories have discussed how a butterfly in Asia flapping its wings can lead to a tornado on the other side of the world. So it’s no surprise that Mason researchers in astrophysics are examining a hot eruption on the surface of the sun that causes GPS systems on Earth to go haywire.
Eruptions on the surface of the sun, some as long as five times the size of Earth, are highly magnetized and emit radiation, all of which can damage man-made… Continue
Added by Vincent Granville on January 30, 2010 at 4:48pm — No Comments
The Statistician vs. the Computer Sciencist: stochastic vs. algorithmic models
While computational statistics is identical to algorithmic modeling from a result / performance point of view, it has the advantage of providing… Continue
Added by Vincent Granville on January 26, 2010 at 11:00pm — No Comments
Comscore Blackmail: Pay Us $10,000 Or We'll Keep Under-Reporting Your Traffic
Comscore has finally caved to a decade of complaints from web publishers that its traffic estimates woefully undercount site traffic, thus producing a vast disparity between Comscore numbers and the numbers the sites have in their logs.
Now, Comscore is finally going to change the way it counts traffic, thus, hopefully, bringing the numbers more in line with reality.
(Comscore extrapolates overall usage from a… Continue
Next Best Models: The Process Agility Equation
You never know what’s coming at you next, which is why process agility is so important. Your organization must have a ready response for anything. And you must make sure that every process participant can identify, at their level, what that response might be, so they can take appropriate action.
I…
ContinueAdded by Vincent Granville on January 21, 2010 at 11:11pm — No Comments
Mining the Cloud? Are You Allowed?
I recently came across a trade-press article with the headline “Mining the Cloud.” The cynic in me immediately issued a silent scoff: How is that different from “crawling the Web”? Are we just mapping old wine to shinier new bottles? Or is there something different here?
But, seeing as how…
ContinueAdded by Vincent Granville on January 21, 2010 at 11:07pm — No Comments
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