mlpack | mlpack : a fast , header-only C++ machine | Machine Learning library
kandi X-RAY | mlpack Summary
kandi X-RAY | mlpack Summary
The mlpack website can be found at and it contains numerous tutorials and extensive documentation. This README serves as a guide for what mlpack is, how to install it, how to run it, and where to find more documentation. The website should be consulted for further information:.
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QUESTION
I've been trying to serialize the sparse matrix from armadillo cpp library. I am doing some large-scale numerical computations, in which the data get stored in a sparse matrix, which I'd like to gather using mpi(Boost implementation) and sum over the matrices coming from different nodes. I'm stuck right now is how to send the sparse matrix from one node to other nodes. Boost suggests that to send user-defined objects (SpMat
in this case) it needs to be serialized.
Boost's documentation gives a good tutorial on how to serialize a user-defined type and I can serialize some basic classes. Now, armadillo's SpMat class is very complicated for me to understand, and serialize.
I've come across few questions and their very elegant answers
- This answer by Ryan Curtin the co-author of Armadillo and author of mlpack has shown a very elegant way to serialize the
Mat
class. - This answer by sehe shows a very simple way to serialize sparse matrix.
Using the first I can mpi::send
a Mat class to another node in the communicator, but using the latter I couldn't do mpi::send
.
This is adapted from the second linked answer
...ANSWER
Answered 2021-Apr-27 at 12:30I hate to say so, but that answer by that sehe guy was just flawed. Thanks for finding it.
The problem was that it didn't store the number of non-zero cells during serialization. Oops. I don't know how I overlooked this when testing.
(Looks like I had several versions and must have patched together a Frankenversion of it that wasn't actually properly tested).
I also threw in a test the matrix is cleared (so that if you deserialize into an instance that had the right shape but wasn't empty you don't end up with a mix of old and new data.)
FIXEDQUESTION
I'm using the mlpack library which runs on top of the Armadillo linear algebra library. An exception has been thrown referring to the line in the debug.hpp file as shown below:
...ANSWER
Answered 2020-Dec-10 at 05:11Try installing the x64 and x86 re-distributable for visual studio 2015, if you don't have them.
If it still doesn't work it check the compilation settings: either you need static compiling with /MT
flag or dynamic compile with /MD
flag.
This flag is under Project properties/ C/C++ / Code generation
.
QUESTION
I am trying to build MLPack from its C++ source using CMake, and for some reason it is complaining that it can't find Julia.
CMake Error at /usr/local/Cellar/cmake/3.14.5/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:137 (message): Julia not found (missing: JULIA_EXECUTABLE) (Required is at least version "0.7.0")
Has anyone encountered a similar issue? On the MLPack build instructions, there is no mention of Julia being a required package.
Thanks, Amine
...ANSWER
Answered 2020-Feb-16 at 15:39QUESTION
I'm using cmake in VSC on Ubuntu for a simple data cluster algorithm. For this I want to use the already existing Mlpack library. If I try to run my code I receive errors like this
main.cpp:(.text._ZN6mlpack8neighbor14NeighborSearchINS0_19NearestNeighborSortENS_6metric7LMetricILi1ELb0EEEN4arma3MatIdEENS_4tree6KDTreeENS9_15BinarySpaceTreeIS5_NS0_18NeighborSearchStatIS2_EES8_NS_5bound10HRectBoundENS9_13MidpointSplitEE17DualTreeTraverserENSH_19SingleTreeTraverserEE6SearchEmRNS7_ImEERS8_[_ZN6mlpack8neighbor14NeighborSearchINS0_19NearestNeighborSortENS_6metric7LMetricILi1ELb0EEEN4arma3MatIdEENS_4tree6KDTreeENS9_15BinarySpaceTreeIS5_NS0_18NeighborSearchStatIS2_EES8_NS_5bound10HRectBoundENS9_13MidpointSplitEE17DualTreeTraverserENSH_19SingleTreeTraverserEE6SearchEmRNS7_ImEERS8_]+0x6b4): Warnung: undefinierter Verweis auf »mlpack::Log::Info«
This seems to be an error because of false linking to Mlpack. I followed this example Getting Started with mlpack and created my own CmakeLists file
...ANSWER
Answered 2020-Jan-14 at 09:11Just install mlpack
in your system and use FindMLPACK.cmake
provided in mlpack models repo. Your root CMakeLists.txt
should look like this:
QUESTION
I want to use ML pack distance metrics to evaluate distance.
I have two arma:vec. Need to find distance between the two vec.
mlpack::metric::EuclideanDistance distance();
ANSWER
Answered 2019-Sep-10 at 00:34mlpack::metric::EuclideanDistance distance;
instead of
mlpack::metric::EuclideanDistance distance();
works
QUESTION
I’m building a project that uses OCamlbuild as its build system. This project also requires a library, which also uses OCamlbuild. This library comes with .mlpack
, _tags
, and myocamlbuild.ml
files. I have included the library into my project as a git submodule in the path lib/mylib
starting from the project’s root.
I’d like to tell OCamlbuild to recursively compile the library, as I would to with a make -C lib/mylib
in a Makefile
.
How can I achieve that?
Thanks.
...ANSWER
Answered 2019-Sep-02 at 10:08An answer is described in Working on dependent projects with OCamlbuild.
Basically, add : include
to _tags
and import the library myocamlbuild.ml
. It does seem a bit wobbly.
Or use Dune.
QUESTION
I am working on mlpack library (C++ machine learning library). I followed the steps of keon here: building mlpack, but i got the following error in cmd ,when i reached the last step which is building mlpack:
...ANSWER
Answered 2017-Jan-23 at 14:05You must have messed up your armadillo installation, to be more specific, you didn't specify the armadillo include dirs.
According to this more detailed instruction, point 10:
Specify the path of the libraries, dll and setup some definition, the details can found at here
So, you can try and add these lines to your mlpack's CMakeLists.txt:
set(ARMADILLO_LIBRARY "C:/Users/yyyy/Qt/3rdLibs/armadillo/armadillo-5.600.2/vc2015_build/bin/vc2015_x86_amd64/release")
set(ARMADILLO_INCLUDE_DIR "C:/Users/yyyy/Qt/3rdLibs/armadillo/armadillo-5.600.2/include")
QUESTION
I met the problem "undefined symbol" when using mlpack in Cython. Here is my test case:
...ANSWER
Answered 2018-Apr-11 at 15:03The extension must be linked to the library it is using.
QUESTION
I downloaded the source files, but I don't know how to combine it with Cython. Is there a Cython wrapper for mlpack?
...ANSWER
Answered 2018-Mar-29 at 18:22mlpack's build infrastructure will automatically generate Cython bindings; all you need to do is the usual build instructions:
QUESTION
I am trying to install mlpack in vs2013. msvc2013 is not compatible, so I am using Intel C++ compiler XE 14.0. However, Intel compiler is not finding the boost libraries.
Using only MSVC -
...ANSWER
Answered 2017-Apr-17 at 18:45Currently, Boost NuGet packages do not have binaries for Intel compiler. Boost NuGet package contains binaries from the Prebuilt windows binaries only. In the future, I'm happy to add new binaries as soon as they are available to download from some trusted resource.
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