Coruscation

Wolfram Alpha searching will be very logical.

Update 2009 May 11:

In its current state, there are many queries that WolframAlpha cannot answer, either because it does not understand the question or because it does not have the requisite data. For instance, it is stumped by queries like "obesity rate," "housing prices New York" or "unemployment San Francisco" (but it will answer "unemployment San Francisco County").

Continue reading "Wolfram Alpha Search: computation over lookup" »

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An Experiment in A New Kind of Music: WolframTones.
Program and diagram your own ringtones, and more, systematically.

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Mathematica users' wiki demonstrates many tasks,
such as simulating diffusion.

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Kalman filter (An algorithm in control theory introduced by R. Kalman in 1960 and
refined by Kalman and R. Bucy. It is an algorithm which makes optimal use of imprecise
data on a linear (or nearly linear) system with Gaussian errors to continuously update
the best estimate of the system's current state.)

As a times series function (example); as an estimator for linear
(time series and panel) models with time-varying coefficients.

Continue reading "Kalman filter with Mathematica" »

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Mathematica 5.1 is coming real soon.

ArrayPlot for flexible large-scale array visualization.
Integrates over regions:

* Regions defined by multivariate polynomial inequalities
* Problems over transcendental regions (where solvable)
* Integrable regions involving infinite ranges
* Undefined parameters in the region specification (solutions are
generated for all possible values)

EquationTrekker explores and interacting with the solutions of ordinary
differential equations (ODEs) is included with Mathematica 5.1.
Among other capabilities, it provides an easy way to investigate
dynamical systems properties, phase spaces, and Poincaré sections.

See also comp.soft-sys.math.mathematica Mathematica
newsgroup at googlegroups.

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