stephentu

// computes and steps along the gradient of the SVM objective function: Sum_i HingeLoss(1.0 - normal^Tx_i y_i) + ||w||_2^2
public static double[] SupportVectorStep(PINQueryable<Example> input, double[] normal, double epsilon)
{
  // select the examples that are currently mis-labeled by the normal vector. also add some negative normal for our regularizer
  var errors = input.Where(x => x.label * x.vector.Select((v, i) => v * normal[i]).Sum() < 1.0)
                    .Concat(Enumerable.Repeat(new Example(normal, -1.0), 10).AsQueryable());

  // fold the average error into the normal
  var newnormal = new double[normal.Length];
  foreach (var coordinate in Enumerable.Range(0, normal.Length))

stephentu

stephentu@ben:/x/2/stephentu/dice/src/cpp(master)$ ./simulator opt.values 
starting simulation of 10000 trials
mean=271.217, std=41.8306

stephentu

static inline SDP 
ConstructMaxCutSDPFromGraph(const UndirectedGraph& g)
{
  SDP sdp(g.NumVertices(), g.NumVertices(), 0); 
  g.Laplacian(sdp.SparseC());
  sdp.SparseC() *= -1; 
  for (size_t i = 0; i < g.NumVertices(); i++)
  {
    sdp.SparseA()[i].zeros(g.NumVertices(), g.NumVertices());
    sdp.SparseA()[i](i, i) = 1.; 

stephentu

def solve_sparse(C):
    """Solve using the low level interface

    """

    if not scipy.sparse.isspmatrix_coo(C):
        raise ValueError("needs COO input")

    n, _ = C.shape

stephentu

CMakeFiles/cf.dir/cf_main.cpp.o: In function `double arma::blas::dot<double>(unsigned int, double const*, double const*)':
/home/stephentu/armadillo-4.000.5/include/armadillo_bits/blas_wrapper.hpp:183: undefined reference to `wrapper_ddot_'
CMakeFiles/cf.dir/cf_main.cpp.o: In function `void arma::blas::gemv<double>(char const*, int const*, int const*, double const*, double const*, int const*, double const*, int const*, double const*, double*, int const*)':
/home/stephentu/armadillo-4.000.5/include/armadillo_bits/blas_wrapper.hpp:34: undefined reference to `wrapper_dgemv_'
CMakeFiles/cf.dir/cf_main.cpp.o: In function `void arma::blas::gemm<double>(char const*, char const*, int const*, int const*, int const*, double const*, double const*, int const*, double const*, int const*, double const*, double*, int const*)':
/home/stephentu/armadillo-4.000.5/include/armadillo_bits/blas_wrapper.hpp:69: undefined reference to `wrapper_dgemm_'
CMakeFiles/cf.dir/cf_main.cpp.o: In function `void arma::blas::syrk<double>(char c

stephentu

stephentu@fender build-old(master)$ cmake -DARMADILLO_LIBRARY=$HOME/armadillo-4.000.5/libarmadillo.so -DARMADILLO_INCLUDE_DIR=$HOME/armadillo-4.000.5/include ..
-- The C compiler identification is GNU 4.9.2
-- The CXX compiler identification is GNU 4.9.2
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++

stephentu

stephentu@peavey:~/mlpack/build(master)$ make
[  1%] Updating gitversion.hpp (if necessary)
-- Found Git: /usr/local/bin/git (found version "2.3.4") 
-- gitversion.hpp is already up to date.
[  1%] Built target mlpack_gitversion
Moving header files to include/mlpack/
[  1%] Built target mlpack_headers
Linking CXX shared library ../../lib/libmlpack.dylib
Error running link command: No such file or directory
make[2]: *** [lib/libmlpack.1.0.dylib] Error 2

stephentu

stephentu@fender ~$ ipython
Python 2.7.9 |Continuum Analytics, Inc.| (default, Mar  9 2015, 16:20:48) 
Type "copyright", "credits" or "license" for more information.

IPython 3.1.0 -- An enhanced Interactive Python.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://binstar.org
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.

stephentu

#pragma once

#include <atomic>
#include <cyclades/macros.hpp>

namespace cyclades {

// implements Lockable concept (C++11)
class spinlock {
public:

stephentu

[error] Exception in thread "main" java.util.concurrent.ExecutionException: java.lang.NegativeArraySizeException
[error]         at java.util.concurrent.FutureTask.report(FutureTask.java:122)
[error]         at java.util.concurrent.FutureTask.get(FutureTask.java:188)
[error]         at edu.berkeley.cs.cyclades.AuxiliaryFunctions$$anonfun$5.apply(AuxiliaryFunctions.scala:203)
[error]         at edu.berkeley.cs.cyclades.AuxiliaryFunctions$$anonfun$5.apply(AuxiliaryFunctions.scala:203)
[error]         at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245)
[error]         at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245)
[error]         at scala.collection.Iterator$class.foreach(Iterator.scala:750)
[error]         at scala.collection.AbstractIterator.foreach(Iterator.scala:1202)
[error]         at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)