小编Mon*_*lal的帖子

这是一个简单的代码,就像在这个链接中读取python中的arff文件一样(注释的文件也不起作用):

import arff
for row in arff.load('heart_train.arff'):
        print(row.sex)  

这是我收到的错误:

python id3.py 
Traceback (most recent call last):
  File "id3.py", line 1, in <module>
    import arff
ImportError: No module named arff

"heart_train"arff文件数据如下:

@relation cleveland-14-heart-disease
@attribute 'age' real
@attribute 'sex' { female, male}
@attribute 'cp' { typ_angina, asympt, non_anginal, atyp_angina}
@attribute 'trestbps' real
@attribute 'chol' real
@attribute 'fbs' { t, f}
@attribute 'restecg' { left_vent_hyper, normal, st_t_wave_abnormality}
@attribute 'thalach' real
@attribute 'exang' { no, yes}
@attribute 'oldpeak' real
@attribute 'slope' { …

我试图找到列中以及整个数据帧内的NAs百分比:

我评论的第一种方法给了我零,而没有评论的第二种方法给了我一个矩阵.不确定我错过了什么.真的很感激任何提示!

cp.2006<-read.csv(file="cp2006.csv",head=TRUE)

#countNAs <- function(x) { 
#  sum(is.na(x)) 
#} 
#total=0
#for (i in col(cp.2006)) {
#  total=countNAs(i)+total
#}
#print(total)
count<-apply(cp.2006, 1, function(x) sum(is.na(x)))
dims<-dim(cp.2006)
num<-dims[1]*dims[2]
NApercentage<-(count/num) * 100
print(NApercentage)

我不知道如何消除这个错误。我正在使用“bitbucket”私下上传我的项目，但即使我已删除所有更改的文件，我仍收到以下错误。我只是想拉取文件

error: Your local changes to the following files would be overwritten by merge:
    buf.cpp
    buf.h
Please, commit your changes or stash them before you can merge.
Aborting

这是我使用的命令：

git pull origin

我按照Shinyapps.io 中显示的相同命令上传我的应用程序，但出现以下错误：

> library(shinyapps)
> shinyapps::deployApp("/Users/mona/CS764/demo")
Error in lint(appDir) : Cancelling deployment: invalid project layout.
The project should have one of the following layouts:
1. 'shiny.R' and 'ui.R' in the application base directory,
2. 'shiny.R' and 'www/index.html' in the application base directory,
3. An R Markdown (.Rmd) document.

这是我的文件的结构：

当我输入这个命令时：

cd /Users/mona/ros_catkin_ws/build_isolated/pcl_ros && /Users/mona/ros_catkin_ws/install_isolated/env.sh cmake /Users/mona/ros_catkin_ws/src/perception_pcl/pcl_ros -DCATKIN_DEVEL_PREFIX=/Users/mona/ros_catkin_ws/devel_isolated/pcl_ros -DCMAKE_INSTALL_PREFIX=/Users/mona/ros_catkin_ws/install_isolated -DCMAKE_BUILD_TYPE=Release -G 'Unix Makefiles'

我收到此错误：

-- Boost version: 1.58.0
-- Found the following Boost libraries:
--   system
--   filesystem
--   thread
CMake Error at CMakeLists.txt:7 (find_package):
  By not providing "FindEigen3.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Eigen3", but
  CMake did not find one.

  Could not find a package configuration file provided by "Eigen3" with any
  of the following names:

    Eigen3Config.cmake
    eigen3-config.cmake

  Add …

我想设计一个彩票调度器,我需要一个非常好的(伪)随机数发生器,类似于LCG,但我想知道是否还有其他更好的选择？我特意寻找用C语言编写的随机生成器.

LCG代码:

unsigned long lcg_rand(unsigned long a)
{
  return (a * 279470273UL) % 4294967291UL;
}

另外我想知道是否srand()可以用于此目的或不是非常准确？

如果一个字符串命中https(没有空格)怎么能把它分成两个单词呢？例如,Join us!https://t.co/Fe0oTahdom想要使它像Join us!和https://t.co/Fe0oTahdom

因此,当我检查freqMap1.values()和freqMap2.values()具有相同的值但是当我用.equals检查它时,它返回false.我很困惑如何解决这个问题:

/**
 * Created by mona on 5/26/16.
 */
import java.util.*;

public class IsomorphicStrings {
    //the words "abca" and "zbxz" are isomorphic

    public static boolean areIsomorphic(String s1, String s2) {
        Map<Character, ArrayList<Integer>> freqMap1 = new LinkedHashMap<>();
        Map<Character, ArrayList<Integer>> freqMap2 = new LinkedHashMap<>();

        for (int i=0; i<s1.length(); i++) {
            if (freqMap1.containsKey(s1.charAt(i))) {
                freqMap1.get(s1.charAt(i)).add(i);
            } else {
                freqMap1.put(s1.charAt(i), new ArrayList<>(Arrays.asList(i)));
            }

        }

        for (int i=0; i<s2.length(); i++) {
            if (freqMap2.containsKey(s2.charAt(i))) {
                freqMap2.get(s2.charAt(i)).add(i);
            } else {
                freqMap2.put(s2.charAt(i), new ArrayList<>(Arrays.asList(i)));
            }
        }

        System.out.println(freqMap1.values());
        System.out.println(freqMap2.values()); …

我怎样才能解决这个问题？

(cv) jalal@klein:~/computer_vision/py-faster-rcnn/lib$ make
python setup.py build_ext --inplace
Traceback (most recent call last):
  File "setup.py", line 58, in <module>
    CUDA = locate_cuda()
  File "setup.py", line 55, in locate_cuda
    raise EnvironmentError('The CUDA %s path could not be located in %s' % (k, v))
OSError: The CUDA lib64 path could not be located in /usr/lib64
Makefile:2: recipe for target 'all' failed
make: *** [all] Error 1

我使用这个:https: //github.com/rbgirshick/py-faster-rcnn

我在Jupyter中遇到了用于上传文件的代码段，但是我不知道如何在执行代码的机器上保存该文件，或者如何显示上传文件的前5行。基本上，我正在寻找上传文件后访问该文件的正确命令：

import io
from IPython.display import display
import fileupload

def _upload():

    _upload_widget = fileupload.FileUploadWidget()

    def _cb(change):
        decoded = io.StringIO(change['owner'].data.decode('utf-8'))
        filename = change['owner'].filename
        print('Uploaded `{}` ({:.2f} kB)'.format(
            filename, len(decoded.read()) / 2 **10))

    _upload_widget.observe(_cb, names='data')
    display(_upload_widget)

_upload()