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Posted
by
samzenpus
from the oldest-google-juice dept.
KentuckyFC writes "The PageRank algorithm (pdf) behind Google's success was developed by Sergey Brin and Larry Page in 1998. It famously judges a page to be important if it is linked to by other important pages. This circular definition is the basis of an iterative mechanism for ranking pages. Now a paper tracing the history of iterative ranking algorithms describes a number of earlier examples. It discusses the famous HITS algorithm for ranking web pages as hubs and authorities developed by Jon Kleinberg a few years before PageRank. It also discusses various approaches from the 1960s and 70s for ranking individuals and journals based on the importance of those that endorse them. But the real surprise is the discovery of a PageRank-type algorithm for ranking sectors of an economy based on the importance of the sectors that supply them, a technique that was developed by the Harvard economist Wassily Leontief in 1941."
Posted
by
timothy
from the yeah-well-I-get-better-mileage dept.
MikeChino writes "Porsche has just unveiled its 911 GT3 R Hybrid, a 480 horsepower track vehicle ready to rock the 24-hour Nurburgring race this May. Porsche's latest supercar will use the same 911 production platform available to consumers today, with a few race-ready features including front-wheel hybrid drive and an innovative flywheel system that stores kinetic energy from braking and then uses it to provide a 160 horsepower burst of speed. The setup is sure to offer an advantage when powering out of turns and passing by other racers."
ideonexus writes: At the New York Toy fair, Mattel has announced Computer Engineer Barbie, the doll's 126th career chosen by popular vote. The official announcement (PDF) shows her accessorizing with nerdy glasses, a Bluetooth earpiece, pink laptop, and tee covered in binary digits. The girls-only vote choose "News Anchor Barbie," which became Barbie's 125th career, but Mattel decided to add the Computer Engineer version after a viral outpouring of support from female IT professionals.