Models vs. Experts #9: Diagnosing Acute Abdominal Pain
Computer-aided diagnosis of acute abdominal pain De Dombal, F. T., Leaper, D. J., Staniland, J. R., McCann, A. P., & Horrocks, J. C. British Medical [...]
About Wesley Gray, PhD
After serving as a Captain in the United States Marine Corps, Dr. Gray earned an MBA and a PhD in finance from the University of Chicago where he studied under Nobel Prize Winner Eugene Fama. Next, Wes took an academic job in his wife’s hometown of Philadelphia and worked as a finance professor at Drexel University. Dr. Gray’s interest in bridging the research gap between academia and industry led him to found Alpha Architect, an asset management firm dedicated to an impact mission of empowering investors through education. He is a contributor to multiple industry publications and regularly speaks to professional investor groups across the country. Wes has published multiple academic papers and four books, including Embedded (Naval Institute Press, 2009), Quantitative Value (Wiley, 2012), DIY Financial Advisor (Wiley, 2015), and Quantitative Momentum (Wiley, 2016). Dr. Gray currently resides in Palmas Del Mar Puerto Rico with his wife and three children. He recently finished the Leadville 100 ultramarathon race and promises to make better life decisions in the future.Memorial Day–A reminder that finance is just a game…
Memorial Day is a sobering and humbling day for me. I had the privilege to serve in the United States Marine Corps with young men and women [...]
Models vs. Experts #8: Graduate School Admissions
A case study of graduate admissions: Application of three principles of human decision making Dawes, R. M. American Psychologist, 26, 180-188 An online version of [...]
SAC Capital and Justice
So you break the law, admit it, but because you're a billionaire you don't get in trouble this time (fluke event, of course), but promise [...]
Are Market Valuations too High?
There is a lot of chatter regarding market valuations. Many commentators are very confident that market is overpriced. Overconfidence can be dangerous. In the words [...]
Models vs. Experts #7: Job Analysis
A comparison of holistic and decomposed judgment strategies in job analyses by job incumbents synthesis Cornelius, E. T., & Lyness, K. S. Journal of Applied [...]
Complexity ==> Confusion and Dysfunction
A heartwarming paragraph from a paper I'm reading: Miller (1956) argued that there are definite limitations on the number of conceptual units that humans can [...]
Models vs. Experts #6: Predicting Male Psychological Disturbance
MMPI in actuarial diagnosis of psychological disturbance among college males Cooke, J. K. Journal of Counseling Psychology, 14, 474-477 A version of the paper can [...]
NASDAQ 3000–still a long way from 5000!
Amazing to think that in 2000 the Nasdaq was over 5,000. Here is an old article from the Street.com: http://www.thestreet.com/story/897915/1.html But was this a bubble? [...]
Shareholder Yield is here!
Cambria Funds is out with an interesting ETF. http://www.cambriafunds.com/syld/ Here is the fact sheet: At 59bps, this fund is low-cost, tax-efficient, and likely to produce [...]
Are Stocks Cheap? The Feds think so…
Are Stocks Cheap? A Review of the Evidence Fernando Duarte and Carlo Rosa A version of the paper can be found here. Want a summary of [...]
Models vs. Experts #5: Health Care Protocol
Experience with a computerized interactive protocol system using HELP Cannon, S. R., & Gardner, R. M. Computers in Biomedical Research,13, 399-409. A version of the [...]
Economic Comeback?
H1B Visa applications went to a lottery this year... Housing is hot and Ford pickups are selling like hotcakes... US Energy IS the story for [...]
Models vs. Experts #4: Electrocardiogram
Performance of the computer and physician in the analysis of the electrocardiogram Caceres, C. A., & Hochberg, H. H. American Heart Journal, 79, 439-443 A [...]
Models vs. Experts #3: Advertising Sales Predictions
A Field Test of Implications of Laboratory Studies of Decision Making Ashton, A. H. The Accounting Review, 59, 361-375 A version of the paper can [...]
Tax is more important than alpha
Below is a snapshot from a marketing deck I've been working on. I'm shifting the majority of my very limited brainpower into the field of [...]
Googling for Profits?
Quantifying Trading Behavior in Financial Markets Using Google Trends Tobias Preis, Helen Susannah Moat, and H. Eugene Stanley A version of the paper can be [...]
Models vs. Experts #2: Rorschach interpretation
Unsuccessful differential diagnosis from the Rorschach Armitage, S. G., & Pearl, D. Journal of Consulting Psychology, 21. 479-484 A version of the paper can be [...]
Models vs. Experts #1: College GPA predictions
Predictive efficiency of two multivariate statistical techniques in comparison with clinical predictions Alexakos, C.E. Journal of Educational Psychology, 57, 207-306 A version of the paper can [...]
Sell in May and Go Away Results
We did a study of this a while ago using the data from Ken French's website. All of the results below are through December 2010. [...]