• Summary: Poblano is a Matlab toolbox of large-scale algorithms for unconstrained nonlinear optimization problems. The algorithms in Poblano require only first-order derivative information (e.g., gradients for scalar-valued objective functions), and therefore can scale to very large problems. The driving application for Poblano development has been tensor decompositions in data analysis applications (bibliometric analysis, social network analysis, chemometrics, etc.).
• Contributions: Lead developer
• Info: Version 1.0 released March 17, 2010
• License: Poblano Toolbox License

• Summary: Tensors (also known as multidimensional arrays or N-way arrays) are used in a variety of applications ranging from chemometrics to psychometrics. The Tensor Toolbox provides the following classes for manipulating dense, sparse, and structured tensors using MATLAB's object-oriented features.
• Contributions: CPOPT (gradient based CP decompositions) and CPWOPT (CP decompositions for tensors with missing values) algorithm development
• Info: Version 2.4 released March 22, 2010
• License: Tensor Toolbox License

• Summary: HEMLOCK is a software toolkit that aids in designing new ensemble classification learning algorithms, as well as enabling comparison with existing algorithms, and helping to make decisions concerning choices of classification algorithms for a given problem. Specifically, HEMLOCK was designed for creating and analyzing heterogeneous ensembles models, i.e., models whose underlying ensemble member base classifiers are of different types.
• Contributions: Project lead
• Info: Release TBD
• License: GPL

• Summary: The QCS (Query, Cluster, Summarize) information retrieval (IR) system is a tool for querying, clustering, and summarizing generic document sets. QCS has been developed as a modular development framework, and thus facilitates the inclusion of new technologies targeting these three IR tasks.
• Contributions: Lead developer
• Info: A demo of version 1.0 is available
• Availability: TBD

• Summary: A MATLAB implementation of HOPE (homotopy optimization using perturbations and ensembles) This method differs from previous homotopy and continuation methods in that its aim is to find a minimizer for each of a set of values of the homotopy parameter, rather than to follow a path of minimizers. To increase the probability of finding global optima, HOPE can follow an ensemble of points obtained by perturbation of previous ones at each value of the continuation parameter .
• Contributions: Lead developer
• Info: Contact dmdunla@sandia.gov about becoming a beta tester
• Availability: TBD

• Summary: LSALIB is a C++ library for efficient processing of text, computation of latent semantic analysis (LSA) models, computation of boolean and LSA queries, and computation of term-term or document-document similarities.
• Contributions: Lead developer
• Info: Latest version is 0.2.2
• Availability: TBD

• Summary: The DAKOTA (Design Analysis Kit for Optimization and Terascale Applications) toolkit provides a flexible, extensible interface between analysis codes and iterative systems analysis methods. DAKOTA contains algorithms for optimization with gradient and nongradient-based methods; uncertainty quantification with sampling, reliability, and stochastic finite element methods; parameter estimation with nonlinear least squares methods; and sensitivity/variance analysis with design of experiments and parameter study capabilities. These capabilities may be used on their own or as components within advanced strategies such as surrogate-based optimization, mixed integer nonlinear programming, or optimization under uncertainty.
• Contributions: surrogate-based optimization, constraint relaxation for infeasible starting points, AMPL interface, DAKOTA-Coliny integration and testing
• Info: Version 4.0 released May 12, 2006
• License: GPL

• Summary: The Trilinos Project is an effort to develop parallel solver algorithms and libraries within an object-oriented software framework for the solution of large-scale, complex multi-physics engineering and scientific applications. A unique design feature of Trilinos is its focus on packages.
• Contributions: preconditioners for space-time (XYZT) iterative solution of transient PDEs
• Info: Version 10.2 released 2010
• License: LGPL

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