Question

我正在尝试在matlab上实现一个使用RegressionTrees作为其过程一部分的分类器。现在我在回归树的mex文件中得到一个例外。

这是崩溃转储的一部分

------------------------------------------------------------------------
       Segmentation violation detected at Tue Jun  4 11:49:48 2013
------------------------------------------------------------------------

Configuration:
  Crash Decoding     : Disabled
  Current Visual     : 0x21 (class 4, depth 24)
  Default Encoding   : UTF-8
  GNU C Library      : 2.13 stable
  MATLAB Architecture: glnxa64
  MATLAB Root        : /usr/local/MATLAB/R2013a
  MATLAB Version     : 8.1.0.604 (R2013a)
  Operating System   : Linux 3.0.0-31-generic #49-Ubuntu SMP Tue Feb 19 20:02:57 UTC 2013 x86_64
  Processor ID       : x86 Family 6 Model 42 Stepping 7, GenuineIntel
  Virtual Machine    : Java 1.6.0_17-b04 with Sun Microsystems Inc. Java HotSpot(TM) 64-Bit Server VM mixed mode
  Window System      : The X.Org Foundation (11004000), display :0

Fault Count: 1


Abnormal termination:
Segmentation violation

Register State (from fault):
  RAX = 000000000a673ad8  RBX = 0000000008c85de8
  RCX = 0000000000000000  RDX = 00000000000002a5
  RSP = 00007f5fa88ba8e0  RBP = 00007f5fa88ba910
  RSI = 0000000008c85de8  RDI = 0000000008c825a0

   R8 = 0000000008c825a0   R9 = 0000000000003870
  R10 = 0000000000003001  R11 = ffefffffffffffff
  R12 = 0000000008c83ac0  R13 = 0000000008c83ac8
  R14 = 00007f5fa88ba930  R15 = 0000000000000119

  RIP = 00007f5f7a06e9fd  EFL = 0000000000010246

   CS = 0033   FS = 0000   GS = 0000

Stack Trace (from fault):
[  0] 0x00007f5f7a06e9fd /usr/local/MATLAB/R2013a/toolbox/stats/classreg/+classreg/+learning/+treeutils/growTree.mexa64+00088573 _ZSt9__find_ifIN9__gnu_cxx17__normal_iteratorIPmSt6vectorImSaImEEEEN12classregtree12IndexedIsNaNIdEEET_SA_SA_T0_St26random_access_iterator_tag+00000077
[  1] 0x00007f5f7a06eb29 /usr/local/MATLAB/R2013a/toolbox/stats/classreg/+classreg/+learning/+treeutils/growTree.mexa64+00088873 _ZSt9remove_ifIN9__gnu_cxx17__normal_iteratorIPmSt6vectorImSaImEEEEN12classregtree12IndexedIsNaNIdEEET_SA_SA_T0_+00000041
[  2] 0x00007f5f7a085f20 /usr/local/MATLAB/R2013a/toolbox/stats/classreg/+classreg/+learning/+treeutils/growTree.mexa64+00184096
[  3] 0x00007f5f7a0cf25b /usr/local/MATLAB/R2013a/toolbox/stats/classreg/+classreg/+learning/+treeutils/growTree.mexa64+00483931
[  4] 0x00007f5f7a0d0580 /usr/local/MATLAB/R2013a/toolbox/stats/classreg/+classreg/+learning/+treeutils/growTree.mexa64+00488832
[  5] 0x00007f5f7a0eb2c6 /usr/local/MATLAB/R2013a/toolbox/stats/classreg/+classreg/+learning/+treeutils/growTree.mexa64+00598726
[  6] 0x00007f5f7a0698a3 /usr/local/MATLAB/R2013a/toolbox/stats/classreg/+classreg/+learning/+treeutils/growTree.mexa64+00067747 mexFunction+00001939
[  7] 0x00007f5fb2a1bf8a     /usr/local/MATLAB/R2013a/bin/glnxa64/libmex.so+00110474 mexRunMexFile+00000090
[  8] 0x00007f5fb2a180f9     /usr/local/MATLAB/R2013a/bin/glnxa64/libmex.so+00094457
[  9] 0x00007f5fb2a18f1c     /usr/local/MATLAB/R2013a/bin/glnxa64/libmex.so+00098076
[ 10] 0x00007f5fbc2ac6b2 /usr/local/MATLAB/R2013a/bin/glnxa64/libmwm_dispatcher.so+00562866 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+00000594
[ 11] 0x00007f5fb2ff453a  /usr/local/MATLAB/R2013a/bin/glnxa64/libmwmcos.so+01672506
[ 12] 0x00007f5fb2f9513a  /usr/local/MATLAB/R2013a/bin/glnxa64/libmwmcos.so+01282362
[ 13] 0x00007f5fb2f953be  /usr/local/MATLAB/R2013a/bin/glnxa64/libmwmcos.so+01283006
[ 14] 0x00007f5fb2f9712c  /usr/local/MATLAB/R2013a/bin/glnxa64/libmwmcos.so+01290540
[ 15] 0x00007f5fb3002246  /usr/local/MATLAB/R2013a/bin/glnxa64/libmwmcos.so+01729094
[ 16] 0x00007f5fb3081cd8  /usr/local/MATLAB/R2013a/bin/glnxa64/libmwmcos.so+02251992
[ 17] 0x00007f5fbc25eaf8 /usr/local/MATLAB/R2013a/bin/glnxa64/libmwm_dispatcher.so+00244472 _ZN13Mfh_MATLAB_fn11dispatch_fhEiPP11mxArray_tagiS2_+00000488
[ 18] 0x00007f5fbbb4a256 /usr/local/MATLAB/R2013a/bin/glnxa64/libmwm_interpreter.so+02245206
[ 19] 0x00007f5fbbafaa86 /usr/local/MATLAB/R2013a/bin/glnxa64/libmwm_interpreter.so+01919622
...
...

完整的崩溃转储http://snipt.org/AlK6

现在我怎么知道我对回归树的输入是否导致错误或者是否与我的硬件有关？有没有办法知道错误的原因？

更新

这里是导致异常的行（回归树行是主要原因）

for j = 1:J
    save('data');
    gj = RegressionTree.fit(trainData, Y_CODE(:, j), 'Weights', wts);
    g{j} = gj;
end

此代码段是循环的一部分（实际上我正在尝试实现GAMBLE算法，如果您知道现有的实现会很棒），并且matlab每次都会在不同的迭代中崩溃。< / p>

我试图保存工作区save('data')并重新启动matlab后重新执行回归树行但它没有崩溃..这很奇怪。我已经向MathWorks发送了一份崩溃报告。

同时有一个支持权重的回归树的matlab实现吗？或更好地实现GAMBLE提升算法？

由于

Answer 1

只要您在符合已发布的MATLAB system requirements的系统上运行，MathWorks代码就不会真正给您带来这样的分段违规 - 无论您输入什么输入。即使你传递完全废话，它应该优雅地停止MATLAB错误，而不是像这样的硬错误。

如果您可以重现行为（在刚刚启动的MATLAB中，没有其他任何运行，每次都有相同的输入），请联系MathWorks支持部门，以发现系统的某个方面是否不受支持，或报告错误。< / p>

在RegressionTree mex文件中的Matlab崩溃

1 个答案: