maxent alternatives and similar packages
Based on the "Math" category.
Alternatively, view maxent alternatives based on common mentions on social networks and blogs.
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vector
An efficient implementation of Int-indexed arrays (both mutable and immutable), with a powerful loop optimisation framework . -
statistics
A fast, high quality library for computing with statistics in Haskell. -
HerbiePlugin
GHC plugin that improves Haskell code's numerical stability -
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hgeometry
HGeometry is a library for computing with geometric objects in Haskell. It defines basic geometric types and primitives, and it implements some geometric data structures and algorithms. The main two focusses are: (1) Strong type safety, and (2) implementations of geometric algorithms and data structures that have good asymptotic running time guarantees. -
dimensional
Dimensional library variant built on Data Kinds, Closed Type Families, TypeNats (GHC 7.8+). -
computational-algebra
General-Purpose Computer Algebra System as an EDSL in Haskell -
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mwc-random
A very fast Haskell library for generating high quality pseudo-random numbers. -
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numhask
A haskell numeric prelude, providing a clean structure for numbers and operations that combine them. -
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poly
Fast polynomial arithmetic in Haskell (dense and sparse, univariate and multivariate, usual and Laurent) -
cf
"Exact" real arithmetic for Haskell using continued fractions (Not formally proven correct) -
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optimization
Some numerical optimization methods implemented in Haskell -
safe-decimal
Safe and very efficient arithmetic operations on fixed decimal point numbers -
equational-reasoning
Agda-style equational reasoning in Haskell -
monoid-subclasses
Subclasses of Monoid with a solid theoretical foundation and practical purposes -
eigen
Haskel binding for Eigen library. Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
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README
MAXENT
The maximum entropy method, or MAXENT, is variational approach for computing probability distributions given a list of moment, or expected value, constraints.
Here are some links for background info. A good overview of applications: http://cmm.cit.nih.gov/maxent/letsgo.html On the idea of maximum entropy in general: http://en.wikipedia.org/wiki/Principle_of_maximum_entropy
Use this package to compute discrete maximum entropy distributions over a list of values and list of constraints.
Here is a the example from Probability the Logic of Science http://books.google.com/books?id=tTN4HuUNXjgC&lpg=PA355&ots=H4NxnzJxT0&dq=probability%20the%20logic%20of%20science%2011.38&pg=PA354#v=onepage&q=probability%20the%20logic%20of%20science%2011.38&f=false
maxent ([1,2,3], [average 1.5])
Right [0.61, 0.26, 0.11]
The classic dice example
maxent ([1,2,3,4,5,6], [average 4.5])
Right [.05, .07, 0.11, 0.16, 0.23, 0.34]
One can use different constraints besides the average value there.
As for why you want to maximize the entropy to find the probability constraint, I will say this for now. In the case of the average constraint it is a kin to choosing a integer partition with the most interger compositions. I doubt that makes any sense, but I will try to explain more with a blog post soon.