The Community Z Tools (CZT) project is building a set of tools for editing, typechecking and animating formal specifications written in the Z specification language, with some support for Z extensions such as Object-Z, Circus, and TCOZ. These tools are all built using the CZT Java framework for Z tools.
If two numbers b and c have the property that their difference b-c is integrally divisible by a number m (i.e., (b-c)/m is an integer), then b and c are said to be "congruent modulo m."
Consensus clustering has emerged as an important elaboration of the classical clustering problem. Consensus clustering, also called aggregation of clustering (or partitions), refers to the situation in which a number of different (input) clusterings have been obtained for a particular dataset and it is desired to find a single (consensus) clustering which is a better fit in some sense than the existing clusterings. Consensus clustering is thus the problem of reconciling clustering information about the same data set coming from different sources or from different runs of the same algorithm. When cast as an optimization problem, consensus clustering is known as median partition, and has been shown to be NP-complete.
This series of three talks will give a nontechnical, high level overview of geometric complexity theory (GCT), which is an approach to the P vs. NP problem via algebraic geometry, representation theory, and the theory of a new class of quantum groups, called nonstandard quantum groups, that arise in this approach.
Excellence of any sort--excellent dancing, excellent quarterbacking, excellent woodworking--has no waste. You fix wordy writing by doing the same job using fewer words.
Delta Debugging automates the scientific method of debugging. The Delta Debugging algorithm isolates failure causes automatically - by systematically narrowing down failure-inducing circumstances until a minimal set remains.
Elefant (Efficient Learning, Large-scale Inference, and Optimisation Toolkit) is an open source library for machine learning licensed under the Mozilla Public License (MPL). We develop an open source machine learning toolkit which provides
A. Turpin, and F. Scholer. Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, page 11--18. New York, NY, USA, ACM, (2006)
M. Koolen, G. Kazai, and N. Craswell. WSDM '09: Proceedings of the Second ACM International Conference on Web Search and Data Mining, page 44--53. New York, NY, USA, ACM, (2009)