Stan 1.1.1

8.6/10 (74 أصوات )

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  • مرات التنزيل: 241
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  • الاصدار : Stan
  • اضيف في: 2013-12-02 00:00:00
  • اخر تحديث: 12/02/2013
  • الموقع علي الانترنت:

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Stan is an open source C++ library that can be used for probability and sampling. It is named after Stanislaw Ulam.Stan provides a tool that will allow you to obtain Bayesian inference with the help of the No-U-Turn sampler, which is a modified version of Hamiltonian Monte Carlo.Product's homepage What's New in This Release: [ read full changelog ]

Bug Fixes:
· fixed bug in comparison operators, which swapped operator< with operator with operator>= semantics
· auto-initialize all variables to prevent segfaults
· atan2 gradient propagation fixed
· fixed off-by-one in NUTS treedepth bound so NUTS goes at most to specified tree depth rather than specified depth 1
· various compiler compatibility and minor consistency issues
· fixed bug in metaprogram preventing lower/upper bound constraints on matrices
· fixed print error for number of kept samples
· fixed floating point literal precision issue in code generation
· fixed bug in bernoulli_log for boundary chance of success theta=0 or theta=1
· many doc patches (mostly due to user comments -- thanks!)
· replace boost sign() to avoid compiler conflicts
· trapping mismatched dimension assignments in arrays, matrices, and vectors

user's guide chapters w. sample models:
· gaussian processes
· measurement error and meta-analysis
· clustering (soft k-means, LDA, naive Bayes)
· ARCH, GARCH model section in regression chapter

sample models:
· hidden Markov models (HMMs)
· non-negative matrix factorization (NNMF)

speed improvements to multivariate models and matrix solvers:
· mdivide_left, mdivide_left_tri_low, mdivide_right,
· mdivide_right_tri_low
· determinant, log determinant
· inverse

· much more extensive probability tests
· unstacked vari for multivariate auto-diff unfolding
· faster multiply self transpose / columns_dot_self
· cleaned up error messages for size mismatches in accessors
· simplified vector view expression template parameterization
· cleaned up many --pedantic compiler warnings

New Functions:
· log absolute determinant, with optimized gradients
· model timing and n_eff output in CSV for all test models
· faster Phi_approx computing an approximate cumulative unit normal density
· added dims() function to extract dimensions of arrays of scalars, vectors, and matrices
· added size() function to extract the number of elements in an array

ongoing vectorizations and reparameterizations of probability functions:
· binomial_logit

probability functions:
· multivariate normal, precision parameterizations only provide legal software, please help us keeping pur site legal, if you think this page is violating copyrights please let us know by clicking here Here

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