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For an up-to-date description of the techniques used in SEMAFOR, see:
Earlier descriptions appear in:
This work was supported by DARPA grant NBCH-1080004, DARPA grant FA8750-12-2-0342 funded under the DEFT program, NSF grants IIS-0836431, IIS-0844507, IIS-0915187, and IIS-1054319, Google's support through the "Wordly Knowledge Project", Qatar National Research Fund grant NPRP08-485-1-083, computational resources provided by Yahoo and TeraGrid resources provided by the Pittsburgh Supercomputing Center under NSF grant number TG-DBS110003.
For questions, bug fixes and comments, please e-mail dipanjan [strudel] cs.cmu.edu or nschneid [strudel] cs.cmu.edu