Sfront compiles MPEG 4 Structured Audio (MP4-SA) programs into efficient C programs that generate audio when executed. MP4-SA is a standard for normative algorithmic sound, which combines an audio signal processing language (SAOL) with score languages (MIDI and SASL). Under Mac OS X and Linux, sfront supports real-time, low-latency audio input/output and MIDI input. Under Mac OS X, sfront supports the creation of AudioUnit plug-ins. The documentation includes a book about SAOL programming.
QuantLib is a cross-platform, quantitative finance C++ library for modeling, pricing, trading, and risk management in real-life. It is also wrapped as Python/Ruby/Scheme modules. Extensions for Excel, R, and Mathematica are available. Other such extensions are under consideration. QuantLib offers tools that are useful both for practical implementation and for advanced modeling. It features market conventions, yield curve models, solvers, PDEs, Monte Carlo (low-discrepancy included), exotic options, VAR, and so on.
Experience-Based Language Acquisition (EBLA) is an open computational framework for visual perception and grounded language acquisition. It can "watch" a series of short videos and acquire a simple language of nouns and verbs corresponding to the objects and object-object relations in those videos. Upon acquiring this protolanguage, it can perform basic scene analysis to generate descriptions of novel videos. While there have been several systems capable of learning object or event labels for videos, this is the first known system to acquire both nouns and verbs using a grounded computer vision system.
The Kolmogorov project provides tools for machine perception and tutorials for machine learning, machine perception, and statistics. It supports fast face detection in images and information on Hidden Markov models, Gabor filters, Multivariate Logistic Regression, and Stochastic Differential Equations. It includes MPISearch, a library for detecting objects in images very quickly (real-time in some cases).
LAPACK is a linear algebra library, based on LINPACK and EISPACK, designed to provide routines for handling simultaneous equations and matrix algebra efficiently, particularly on shared memory vector processors, parallel processors, and clusters. The code is written in Fortran, and requires the BLAS (Basic Linear Algebra Subprograms) library.
Squeuer is a queueing proxy for Seti@Home. It keeps a configurable sized queue of work units so that the client will always be able to get a new work unit immediately upon finishing one. It queues results for uploading should the main Seti@Home site be overloaded or down. Results are never lost and the client is never delayed waiting to upload a result. It can handle multiple users running the Seti@Home client on multiple machines all connecting to Squeuer. It has been tested and found to work on different versions of Unix, MacOS, and Windows. All it requires is a Perl 5 interpreter.
libstree is a generic suffix tree implementation, written in C. It can handle arbitrary data structures as elements of a string. It is therefore not limited to simple ASCII character strings, like most demo implementations of suffix algorithms are. libstree can handle multiple strings per suffix tree, including dynamic insertion and removal of strings. It provides various means of obtaining information about nodes in the tree, such as depth-first and breadth-first iteration, leaves iteration, and bottom-up iteration.