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Big Data Research Progress Chao Jan 22, 2013 Big Data Lab • Big Data@CSAIL, MIT – – – – – – – – – – – http://bigdata.csail.mit.edu/ 23 nodes GROWING BIG LINKED DATA FROM SEED: BUILDING A DEMO VISION MACHINE: LEARNING ONLINE FROM 25 MILLION IMAGES NATURAL LANGUAGE INTERFACE FOR BIG DATA SCIDB MACHINE LEARNING SOCIAL: CONDENSR SOCIAL: TWITINFO SOCIAL: INFLUENCE MODELING … Big Data Lab • NASA tournament lab – http://www.nasa.gov/directorates/heo/ntl/ • Big data challenge – http://open.nasa.gov/blog/2012/10/03/nasatournament-labs-big-data-challenge/ – Apply the process of open innovation to conceptualizing new and novel approaches to using “big data” information sets from various U.S. government agencies, e.g., health, energy and earth science. Big Data People • Jimmy Lin (University of Maryland) – http://www.umiacs.umd.edu/~jimmylin/ • Ron Bekkerman (LinkedIn) – http://people.cs.umass.edu/~ronb/ • Misha Bilenko (MSR) – http://research.microsoft.com/en-us/um/people/mbilenko/ • John Langford (Yahoo! Research) – http://hunch.net/~jl/ Tutorial • Scaling Up Machine Learning-Parallel and Distributed Approaches • KDD’2011 • Ron Bekkerman (LinkedIn), Misha Bilenko (MSR) and John Langford (Yahoo! Research) • http://hunch.net/~large_scale_survey/ Tutorial • State-of-the-art platforms and algorithm choices • Hardware options (from FPGAs and GPUs to multi-core systems and commodity clusters) • Programming frameworks (including CUDA, MPI, MapReduce, and DryadLINQ) • Learning settings (e.g., semi-supervised and online learning) • Example-driven, covering a number of popular algorithms (e.g., boosted trees, spectral clustering, belief propagation) and diverse applications (e.g., speech recognition and object recognition in vision). Parallelization: platform choices Platform Communication Scheme Data size Peer-to-Peer TCP/IP Petabytes Virtual Clusters MapReduce / MPI Terabytes HPC Clusters MPI / MapReduce Terabytes Multicore Multithreading Gigabytes GPU CUDA Gigabytes FPGA HDL Gigabytes The Book • • • • Cambridge Uni Press Due in November 2011 21 chapters Covering – Platforms – Algorithms – Learning setups – Applications Chapter contributors 2 12 3 4 13 14 5 6 15 16 7 8 17 18 9 10 19 20 11 21 New age of big data • The world has gone mobile – 5 billion cellphones produce daily data • Social networks have gone online – Twitter produces 200M tweets a day • Crowdsourcing is the reality – Labeling of 100,000+ data instances is doable • Within a week Big Data Data • DATA.GOV – http://www.data.gov/developers/community/dev elopers – Data portal provided by US government Big Data in Q&A • It is estimated that 2.5 quintillion bytes of new data are created daily with an estimated 80% of this produced as "unstructured" data • IBM Watson deep Q&A – – – – – http://www.research.ibm.com/articles/watson.shtml Evidence-based decision support Jeopardy! Provide a single correct answer with confidence Analyze over 200 million pages in three seconds Big Data in Q&A • IBM Watson deep Q&A – Health care • 2011, pilot program with WellPoint, whose affiliated health plans cover one in nine Americans • 2012, partnership with Memorial Sloan-Kettering Cancer Center, where work is under way to teach Watson about oncology diagnosis and treatment options Big Data Blog • http://whatsthebigdata.com/ – News and events about Big Data • http://www.greenplum.com/industrybuzz/big-data/research-papers – News and research papers about Big Data Big Data Publication • Fast Data in the Era of Big Data: Twitter’s Real-Time Related Query Suggestion Architecture • http://arxiv.org/pdf/1210.7350v1.pdf • Architecture behind Twitter's real-time related query suggestion and spelling correction service – First implementation: typical Hadoop-based analytics stack, did not meet the latency requirement – Second implementation: system deployed in production, custom in-memory processing engine Big Data Publication • Fast Candidate Generation for Two-Phase Document Ranking: Postings List Intersection with Bloom Filters • http://www.umiacs.umd.edu/~jimmylin/publications/Asadi_Lin_CIK M2012.pdf • Most modern web search engines employ a two-phase ranking strategy: a candidate list of documents is generated using a “cheap” but low-quality scoring function, which is then reranked by an “expensive" but high-quality method • Candidate generation for conjunctive query processing in this context • A fast, approximate postings list intersection algorithms based on Bloom Filters Big Data Publication • Why Not Grab a Free Lunch? Mining Large Corpora for Parallel Sentences to Improve Translation Modeling – http://www.umiacs.umd.edu/~jimmylin/publications/Ture_Lin_ NAACL-HLT2012.pdf • Large-Scale Machine Learning at Twitter – http://www.umiacs.umd.edu/~jimmylin/publications/Lin_Kolcz_ SIGMOD2012.pdf • Smoothing Techniques for Adaptive Online Language Models: Topic Tracking in Tweet Streams – http://www.umiacs.umd.edu/~jimmylin/publications/Lin_etal_K DD2011.pdf Big Data Book • Data-Intensive Text Processing with MapReduce • http://lintool.github.com/MapReduceAlgorith ms/MapReduce-book-final.pdf