程序编译错误 #2
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你好，wordseg依赖了layers里的.o，需要在layers里先make哈~ 另外CrossEntropyLoss是针对非序列样本的，RNN的话需要用SeqCrossEntropyLossLayer哈~ 样例数据在example下的readme.md里给出了，可以下载试试~ |
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多谢，按照你的提示make成功了，test_mnist也运行起来了，不过有个建议哈，因为这个是word_seg，所以生成的可执行文件是不是应该改个名？另外，有数据集相关的网页介绍吗，我看了下数据文件，不太明白样本的含义，多谢了啊 |
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382 7 84 385 625 915 191 108;2 3 0 2 0 2 0 2 |
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是说这个数据集并不是一个公开的数据集是吗，查了一下bems，样本含义还是可以理解的。晚上运行了一下，早上起来发现还没有跑完，大概跑了九个小时吧，这个时间正常吗 |
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嗯，数据集是来自人民日报的语料，运行时间是正常的~ 你可以把最大epoch调小点。之后会加入模型快照功能：一定epoch之后自动保存模型~ 你是在mac上跑的？ 另外网络结构你也可以试着调整下，现在代码里是为了测试搞的三层双向RNN（bigru+bilstm+birnn)。
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恩，我在mac上跑的，双向rnn还没看，不太懂，我再跑一遍看看。 有一个问题哈，数据集的文件名是train_text.seg.10w,但是好像才有一万条数据，是不是命名有问题哈。还有就是每个epoch样本的顺序都是确定的，我记得打乱顺序最好，请问这个有计划吗 |
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是 ,样本shuffle效果会更好点，我之前是有的，后来整理的时候又删掉了.
在 2017年8月7日 上午11:14，sw <notifications@github.com>写道：
… 恩，我在mac上跑的，双向rnn还没看，不太懂，我再跑一遍看看。 有一个问题哈，数据集的文件名是train_text.seg.
10w,但是好像才有一万条数据，是不是命名有问题哈。还有就是每个epoch样本的顺序都是确定的，我记得打乱顺序最好，请问这个有计划吗
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hi,我这两天在看这份代码，今天打算运行一下，发现有编译错误，我运行的是example/wordseg里面的例子，刚开始make的时候提示wordseg.cpp中的SeqLossLayer找不到，我看了下源码，好像layers目录下面没有定义这个类，不知道是不是这个类废弃了但是代码没更新？
我把SeqLossLayer换成CrossEntropyLossLayer后继续make，遇到如下错误：
g++ -pg -w -DDEBUGALL -I. -I../../matrix -I../../layers -I../../utils -I../../net -o test_mnist ./wordseg.o
Undefined symbols for architecture x86_64:
"sub_dl::GruCell::GruCell(int, int)", referenced from:
sub_dl::BiCellWrapper<sub_dl::GruCell>::BiCellWrapper(int, int, int) in wordseg.o
"sub_dl::RnnCell::RnnCell(int, int)", referenced from:
sub_dl::BiCellWrapper<sub_dl::RnnCell>::BiCellWrapper(int, int, int) in wordseg.o
"sub_dl::LstmCell::LstmCell(int, int, bool)", referenced from:
sub_dl::BiCellWrapper<sub_dl::LstmCell>::BiCellWrapper(int, int, bool, bool, int) in wordseg.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [build] Error 1
完整的日志如下：
g++ -c -v -pg -w -DDEBUGALL -I. -I../../matrix -I../../layers -I../../utils -I../../net ./wordseg.cpp
Apple LLVM version 8.0.0 (clang-800.0.42.1)
Target: x86_64-apple-darwin15.5.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.12.0 -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name wordseg.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix -mdisable-fp-elim -masm-verbose -munwind-tables -target-cpu penryn -target-linker-version 274.2 -v -dwarf-column-info -debugger-tuning=lldb -coverage-file /Users/songwei/machineLearning/SUDL/example/wordseg/wordseg.cpp -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/8.0.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk -D DEBUGALL -I . -I ../../matrix -I ../../layers -I ../../utils -I ../../net -stdlib=libc++ -w -fdeprecated-macro -fdebug-compilation-dir /Users/songwei/machineLearning/SUDL/example/wordseg -ferror-limit 19 -fmessage-length 203 -pg -stack-protector 1 -fblocks -fobjc-runtime=macosx-10.12.0 -fencode-extended-block-signature -fcxx-exceptions -fexceptions -fmax-type-align=16 -fdiagnostics-show-option -fcolor-diagnostics -o wordseg.o -x c++ ./wordseg.cpp
clang -cc1 version 8.0.0 (clang-800.0.42.1) default target x86_64-apple-darwin15.5.0
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include/c++/v1"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/local/include"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/Library/Frameworks"
#include "..." search starts here:
#include <...> search starts here:
.
../../matrix
../../layers
../../utils
../../net
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/8.0.0/include
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/System/Library/Frameworks (framework directory)
End of search list.
g++ -pg -w -DDEBUGALL -I. -I../../matrix -I../../layers -I../../utils -I../../net -o test_mnist ./wordseg.o
Undefined symbols for architecture x86_64:
"sub_dl::GruCell::GruCell(int, int)", referenced from:
sub_dl::BiCellWrapper<sub_dl::GruCell>::BiCellWrapper(int, int, int) in wordseg.o
"sub_dl::RnnCell::RnnCell(int, int)", referenced from:
sub_dl::BiCellWrapper<sub_dl::RnnCell>::BiCellWrapper(int, int, int) in wordseg.o
"sub_dl::LstmCell::LstmCell(int, int, bool)", referenced from:
sub_dl::BiCellWrapper<sub_dl::LstmCell>::BiCellWrapper(int, int, bool, bool, int) in wordseg.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [build] Error 1
对c++不太熟，在网上找到的方法都没解决。
还请帮忙看下是哪里的问题。
多谢！
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