06 Nov 09 Going Head To Head With Genius On Playlists
brownerthanu writes "Engineers at the University of California, San Diego are developing a system to include an ignored sector of music, dubbed the 'long tail', in music recommendations. It's well known that radio suffers from a popularity bias, where the most popular songs receive an inordinate amount of exposure. In Apple's music recommender system, iTunes' Genius, this bias is magnified. An underground artist will never be recommended in a playlist due to insufficient data. It's an artifact of the popular collaborative filtering recommender algorithm, which Genius is based on. In order to establish a more holistic model of the music world, Luke Barrington and researchers at the Computer Audition Laboratory have created a machine learning system which classifies songs in an automated, Pandora-like, fashion. Instead of using humans to explicitly categorize individual songs, they capture the wisdom of the crowds via a Facebook game, Herd It, and use the data to train statistical models. The machine can then 'listen to,' describe and recommend any song, popular or not. As more people play the game, the machines get smarter. Their experiments show that automatic recommendations work at least as well as Genius for recommending undiscovered music."Read more of this story at Slashdot.
Tagi: recommender system, california san diego, wdom, university of california san diego, fashi, collaborative filtering, insufficient data, artt, c world, artifact, pandora, crowds, herd, bias, genius, algorithm, university of california, peoe, popularity, mod
16 Feb 10 ISSCC: MIT, TSMC, UC seek to control power
At the International Solid State Circuits Conference (ISSCC) here last week, KAIST, MIT, TSMC, UC Berkeley and others decribed the use of digital control circuitry in DC-DC power converters.
Tagi: massachusetts institute of technology, university of california berkeley, uc berkeley, state circuits, isscc, tsmc, dc dc, dc power, circuitry, solid state, institute of technology, university of california
24 Feb 10 Berkeley puts flying litho on the runway
At the SPIE Advanced Lithography event here, the University of California at Berkeley provided an update on a technology called plasmonic nano-lithography--based on a flying lens.
Tagi: university of california berkeley, california at berkeley, university of california at berkeley, educati, lithography, university of california, united states
