Showing 6 of total 6 results (show query)
eguidotti
calculus:High Dimensional Numerical and Symbolic Calculus
Efficient C++ optimized functions for numerical and symbolic calculus as described in Guidotti (2022) <doi:10.18637/jss.v104.i05>. It includes basic arithmetic, tensor calculus, Einstein summing convention, fast computation of the Levi-Civita symbol and generalized Kronecker delta, Taylor series expansion, multivariate Hermite polynomials, high-order derivatives, ordinary differential equations, differential operators (Gradient, Jacobian, Hessian, Divergence, Curl, Laplacian) and numerical integration in arbitrary orthogonal coordinate systems: cartesian, polar, spherical, cylindrical, parabolic or user defined by custom scale factors.
Maintained by Emanuele Guidotti. Last updated 2 years ago.
calculuscoordinate-systemscurldivergenceeinsteinfinite-differencegradienthermitehessianjacobianlaplaciannumerical-derivationnumerical-derivativesnumerical-differentiationsymbolic-computationsymbolic-differentiationtaylorcpp
47 stars 8.98 score 66 scripts 7 dependents
randy3k
arrangements:Fast Generators and Iterators for Permutations, Combinations, Integer Partitions and Compositions
Fast generators and iterators for permutations, combinations, integer partitions and compositions. The arrangements are in lexicographical order and generated iteratively in a memory efficient manner. It has been demonstrated that 'arrangements' outperforms most existing packages of similar kind. Benchmarks could be found at <https://randy3k.github.io/arrangements/articles/benchmark.html>.
Maintained by Randy Lai. Last updated 2 years ago.
52 stars 7.89 score 118 scripts 23 dependents
dkahle
mpoly:Symbolic Computation and More with Multivariate Polynomials
Symbolic computing with multivariate polynomials in R.
Maintained by David Kahle. Last updated 4 months ago.
12 stars 6.25 score 70 scripts 7 dependents
olisansonwu
diyar:Record Linkage and Epidemiological Case Definitions in 'R'
An R package for iterative and batched record linkage, and applying epidemiological case definitions. 'diyar' can be used for deterministic and probabilistic record linkage, or multistage record linkage combining both approaches. It features the implementation of nested match criteria, and mechanisms to address missing data and conflicting matches during stepwise record linkage. Case definitions are implemented by assigning records to groups based on match criteria such as person or place, and overlapping time or duration of events e.g. sample collection dates or periods of hospital stays. Matching records are assigned a unique group ID. Index and duplicate records are removed or further analyses as required.
Maintained by Olisaeloka Nsonwu. Last updated 3 months ago.
6 stars 4.77 score 33 scripts
cran
blockmodeling:Generalized and Classical Blockmodeling of Valued Networks
This is primarily meant as an implementation of generalized blockmodeling for valued networks. In addition, measures of similarity or dissimilarity based on structural equivalence and regular equivalence (REGE algorithms) can be computed and partitioned matrices can be plotted: Žiberna (2007)<doi:10.1016/j.socnet.2006.04.002>, Žiberna (2008)<doi:10.1080/00222500701790207>, Žiberna (2014)<doi:10.1016/j.socnet.2014.04.002>.
Maintained by Aleš Žiberna. Last updated 2 years ago.
2.78 score 12 dependents