python-2.7

问题 I am trying to build a basic number classifier in python, and I have a 3923 * 65 array. Each row in my array is an image that when showed is a number from 0 to 9. 3923 * 64 is the actual size of my array, and the last column is the actual number the image is. I already have an array for the entire 3923 * 65, and one for the 3923 * 64 part of it. full array: fullImageArray = np.zeros((len(myImageList),65), dtype = np.float64) fullImageArray = np.array(myImageList) number array: fullPlotArray =

问题 I am trying to build a basic number classifier in python, and I have a 3923 * 65 array. Each row in my array is an image that when showed is a number from 0 to 9. 3923 * 64 is the actual size of my array, and the last column is the actual number the image is. I already have an array for the entire 3923 * 65, and one for the 3923 * 64 part of it. full array: fullImageArray = np.zeros((len(myImageList),65), dtype = np.float64) fullImageArray = np.array(myImageList) number array: fullPlotArray =

问题 I am trying to build a basic number classifier in python, and I have a 3923 * 65 array. Each row in my array is an image that when showed is a number from 0 to 9. 3923 * 64 is the actual size of my array, and the last column is the actual number the image is. I already have an array for the entire 3923 * 65, and one for the 3923 * 64 part of it. full array: fullImageArray = np.zeros((len(myImageList),65), dtype = np.float64) fullImageArray = np.array(myImageList) number array: fullPlotArray =

问题 Given a list of edges in 2-tuple, (source, destination), is there any efficient way to determine if a cycle exists? Eg, in the example below, a cycle exists because 1 -> 3 -> 6 -> 4 -> 1. One idea is to calculate the number of occurrence of each integer in the list (again, is there any efficient way to do this?). Is there any better way? I am seeing a problem with 10,000 of 2-tuple edge information. a = [(1,3), (4,6), (3,6), (1,4)] 回答1: I'm assuming you want to find a cycle in the undirected

问题 I use Python OpenCV to skeletonize an image like this: and I want to find the branch point of the skeleton I have no idea how to do it. Any thoughts? 回答1: The main idea here is to look in the neighborhood. You can use a 8-conected neighborhood for every pixels ([1 1 1; 1 1 1; 1 1 1], and the center is the pixel for which the neighborhood being explored!). At every branch point, the degree of the pixel will be > 2, while regular pixels will have a degree of 2 (i.e., connected to 2 pixels in

问题 I use Python OpenCV to skeletonize an image like this: and I want to find the branch point of the skeleton I have no idea how to do it. Any thoughts? 回答1: The main idea here is to look in the neighborhood. You can use a 8-conected neighborhood for every pixels ([1 1 1; 1 1 1; 1 1 1], and the center is the pixel for which the neighborhood being explored!). At every branch point, the degree of the pixel will be > 2, while regular pixels will have a degree of 2 (i.e., connected to 2 pixels in

问题 I use Python OpenCV to skeletonize an image like this: and I want to find the branch point of the skeleton I have no idea how to do it. Any thoughts? 回答1: The main idea here is to look in the neighborhood. You can use a 8-conected neighborhood for every pixels ([1 1 1; 1 1 1; 1 1 1], and the center is the pixel for which the neighborhood being explored!). At every branch point, the degree of the pixel will be > 2, while regular pixels will have a degree of 2 (i.e., connected to 2 pixels in

问题 I'm using Python.7.10 and have installed beautifulsoup using pip. The package was installed successfully. But when I'm trying to import beautifulsoup, I'm getting this error: ImportError: No module named beautifulsoup I checked the list of my installed modules and I found the beautifulsoup module in the installed modules list: 回答1: You installed BeautifulSoup version 3; the module is called BeautifulSoup with capital B and S : from BeautifulSoup import BeautifulSoup See the Quickstart

问题 I'm using Python.7.10 and have installed beautifulsoup using pip. The package was installed successfully. But when I'm trying to import beautifulsoup, I'm getting this error: ImportError: No module named beautifulsoup I checked the list of my installed modules and I found the beautifulsoup module in the installed modules list: 回答1: You installed BeautifulSoup version 3; the module is called BeautifulSoup with capital B and S : from BeautifulSoup import BeautifulSoup See the Quickstart

问题 I'm using Python.7.10 and have installed beautifulsoup using pip. The package was installed successfully. But when I'm trying to import beautifulsoup, I'm getting this error: ImportError: No module named beautifulsoup I checked the list of my installed modules and I found the beautifulsoup module in the installed modules list: 回答1: You installed BeautifulSoup version 3; the module is called BeautifulSoup with capital B and S : from BeautifulSoup import BeautifulSoup See the Quickstart