lfst alternatives and similar packages
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vector
An efficient implementation of Int-indexed arrays (both mutable and immutable), with a powerful loop optimisation framework . -
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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. -
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dimensional
Dimensional library variant built on Data Kinds, Closed Type Families, TypeNats (GHC 7.8+). -
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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) -
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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
lfst - L-Fuzzy Set Theory implementation in Haskell
Description
If X is a collection of objects denoted generically by x, then a fuzzy set F(A) in X is a set of ordered pairs. Each of them consists of an element x and a membership function which maps x to the membership space M. The current implementation is inspired by the work of J.A. Goguen L-Fuzzy Sets [1].
Setup
This library could be easily compiled using cabal issuing the command cabal build in the root directory.
Usage
Using this library you can easily apply the Extension Principle [2] in the following way:
let fuzzy_set = fromList [(-1, Godel 0.5), (0, Godel 0.8), (1, Godel 1.0), (2, Godel 0.4)]
fmap (^2) fuzzy_set
> FuzzySet {(0, Godel 0.8), (1, Godel 1.0), (4, Godel 0.4)}
Authors
All the following authors have equally contributed to this project (listed in alphabetical order by surname):
References
[1]: Goguen, Joseph A. "L-fuzzy sets." Journal of mathematical analysis and applications (1967)
[2]: Zadeh, Lotfi A. "Fuzzy sets." Information and control (1965)