我已经安装了相应的软件包，例如：torch、cocoapi、cudnn、cunn等，并相应地部署了DeepMask。

但是，当我训练模型，输入th train.lua时，出现了如下错误：

xavier@xavier-ThundeRobot:/desired/absolute/path/to/deepmask$ th train.lua-- ignore option rundir -- ignore option dm -- ignore option reload -- ignore option gpu    -- ignore option datadir    | running in directory /desired/absolute/path/to/deepmask/exps/deepmask/exp | number of paramaters trunk: 15198016  | number of paramaters mask branch: 1608768 | number of paramaters score branch: 526337 | number of paramaters total: 17333121  /home/xavier/torch/install/bin/luajit: ...e/xavier/torch/install/share/lua/5.1/threads/threads.lua:183: [thread 2 callback] /home/xavier/torch/install/share/lua/5.1/coco/CocoApi.lua:126: assertion failed!stack traceback:    [C]: in function 'assert'    /home/xavier/torch/install/share/lua/5.1/coco/CocoApi.lua:126: in function '__init'    /home/xavier/torch/install/share/lua/5.1/torch/init.lua:91: in function </home/xavier/torch/install/share/lua/5.1/torch/init.lua:87>    [C]: in function 'CocoApi'    /desired/absolute/path/to/deepmask/DataSampler.lua:25: in function '__init'    /home/xavier/torch/install/share/lua/5.1/torch/init.lua:91: in function </home/xavier/torch/install/share/lua/5.1/torch/init.lua:87>    [C]: in function 'DataSampler'    /desired/absolute/path/to/deepmask/DataLoader.lua:36: in function </desired/absolute/path/to/deepmask/DataLoader.lua:30>    [C]: in function 'xpcall'    ...e/xavier/torch/install/share/lua/5.1/threads/threads.lua:234: in function 'callback'    /home/xavier/torch/install/share/lua/5.1/threads/queue.lua:65: in function </home/xavier/torch/install/share/lua/5.1/threads/queue.lua:41>    [C]: in function 'pcall'    /home/xavier/torch/install/share/lua/5.1/threads/queue.lua:40: in function 'dojob'    [string "  local Queue = require 'threads.queue'..."]:13: in main chunkstack traceback:    [C]: in function 'error'    ...e/xavier/torch/install/share/lua/5.1/threads/threads.lua:183: in function 'dojob'    ...e/xavier/torch/install/share/lua/5.1/threads/threads.lua:264: in function 'synchronize'    ...e/xavier/torch/install/share/lua/5.1/threads/threads.lua:142: in function 'specific'    ...e/xavier/torch/install/share/lua/5.1/threads/threads.lua:125: in function 'Threads'    /desired/absolute/path/to/deepmask/DataLoader.lua:40: in function '__init'    /home/xavier/torch/install/share/lua/5.1/torch/init.lua:91: in function </home/xavier/torch/install/share/lua/5.1/torch/init.lua:87>    [C]: in function 'DataLoader'    /desired/absolute/path/to/deepmask/DataLoader.lua:21: in function 'create'    train.lua:101: in main chunk    [C]: in function 'dofile'    ...vier/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:150: in main chunk    [C]: at 0x00405d50

请帮帮我，非常感谢！

回答：

我自己解决了问题！

之前$DEEPMASK目录需要高权限才能访问，只需chmod 777 -R $DEEPMASK，问题就解决了。