Download - Big Data Research Progress Chao Jan 22, 2013. Big Data Lab Big Data@CSAIL, MIT – – 23 nodes
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/nasa-tour
nament-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
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/developers
– 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/industry-buzz/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_CIKM2012.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_KDD2011.pdf