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原创 TIDB etch cpu-arch or kernel-name
启动 tiup cluster check ./topology.yaml --user root -p 报错。发现有一台服务器忘记开启了。
2024-03-13 23:30:00 309
原创 Load Data local infile ERROR 1300 (HY000)
导入的时候,发现一直报ERROR 1300 (HY000): Invalid utf8 character string: '中文'最后搞了3天发现是“𤞏”,去掉这个正常导入。utf8格式然后导入不进去。
2024-01-09 23:00:00 343
原创 Failed to start Docker Application Container Engine &&daemon.json
百度一些之后,都是无相关的数据,再检查完自己的daemon.json。
2023-03-28 23:00:00 124
原创 Can‘t load plugin: sqlalchemy.dialects:mysqlpymysql
Can't load plugin: sqlalchemy.dialects:mysqlpymysql
2022-10-24 23:15:00 1131
原创 docker docker: Error response from daemon: Get “https://registry-1.docker.io/v2/“: EOF
下载镜像的时候,显示如下错误docker: Error response from daemon: Get "https://registry-1.docker.io/v2/": EOF按网上的方法,先是修改了daemon.json.还有host都没有效果然后换另外一台虚拟机情况也一样按网上的思路应该是网络上的问题查看自己的openwrt,发现某些东西打开了。额。。。把这个关闭了,一切正常。...
2022-02-10 20:15:00 1694
原创 dolphinscheduler Permission denied
dolphinscheduler python Permission denied
2021-12-17 14:04:47 1646
原创 selenium循环点击无法定位元素问题
方法参考selenium循环点击无法定位元素问题_daiyu__zz的博客-CSDN博客发现还是不行,所以换另外一个思路,代码添加一行all = driver.find_elements_by_css_selector("xxx")s = len(all)print(u"获取总个数:%s"%s) for i in range(s): #添加一行数据,得新定位元素 all = driver.find_elements_by_css_selector("xxx"..
2021-09-23 16:14:57 384
原创 Jupyter Notebook密码重置
浏览器换了,忘记密码了,要重置换一下1.生成秘钥先是用python终端获得秘钥from IPython.lib import passwdpasswd()[root@hadoop102 ~]# pythonPython 3.6.5 |Anaconda, Inc.| (default, Apr 29 2018, 16:14:56)[GCC 7.2.0] on linuxType "help", "copyright", "credits" or "license"...
2021-01-29 21:21:28 385
原创 推荐系统 python 简单化
看了不少的推荐系统,感觉都比较复杂,最后整理了一下,变成简单形式的。#-*- coding: utf-8 -*-'''Created on 2020-12-20'''import sysimport mathfrom texttable import Texttableimport os# 计算余弦距离def getCosDist(user1, user2): sum_x = 0.0 sum_y = 0.0 sum_xy = 0.0 for key
2020-12-23 21:15:30 145
原创 机器学习基础自学七(算法调参range形式)
这是另外一种写法,感觉比较好,用range的形式。from pandas import read_csvfrom sklearn.linear_model import Ridgefrom sklearn.model_selection import RandomizedSearchCVfrom scipy.stats import uniform# 导入数据filename = ...
2020-03-05 22:20:59 297
原创 机器学习基础自学六(算法调参)
from pandas import read_csvfrom sklearn.linear_model import Ridgefrom sklearn.model_selection import GridSearchCV# 导入数据filename = 'D:\example\MachineLearning-master\pima_data.csv'names = ['preg'...
2020-03-05 22:20:52 299
原创 机器学习基础自学五(集成算法)
from pandas import read_csvfrom sklearn.model_selection import KFoldfrom sklearn.model_selection import cross_val_scorefrom sklearn.ensemble import BaggingClassifierfrom sklearn.tree import Decis...
2020-03-05 22:20:45 193
原创 机器学习基础自学五(审核分类算法)
from pandas import read_csvfrom sklearn.model_selection import KFoldfrom sklearn.model_selection import cross_val_scorefrom sklearn.linear_model import LogisticRegression#逻辑回归, 是分类算法不是回归算法from sk...
2020-03-05 22:20:36 485
原创 机器学习基础自学四(混沌矩阵)
from pandas import read_csvfrom sklearn.model_selection import KFoldfrom sklearn.model_selection import cross_val_scorefrom sklearn.linear_model import LogisticRegressionfrom sklearn.metrics impo...
2020-03-05 22:20:26 1841
原创 机器学习基础自学三(评估算法)
from pandas import read_csvfrom sklearn.model_selection import train_test_split#通用模块from sklearn.linear_model import LogisticRegressionfrom sklearn.model_selection import cross_val_score#通用模块from...
2020-03-05 22:20:19 220
原创 机器学习基础自学三(数据特征)
from pandas import read_csvfrom sklearn.decomposition import PCA#主要成分分析from sklearn.feature_selection import RFE#递归特征消除from sklearn.linear_model import LogisticRegression#线性回归from sklearn.ensembl...
2020-03-05 22:20:09 221
原创 机器学习基础自学二(数据预处理)
主要是用到了统计学的方法去预处理数据# 调整数据尺度(0..)from pandas import read_csvfrom numpy import set_printoptionsfrom sklearn.preprocessing import MinMaxScaler#调整数据尺度,将不同计量单位数据统一成相同尺度from sklearn.preprocessing impo...
2020-03-05 22:20:00 183
原创 机器学习基础自学一(算法审查)
机器学习中导入的库比较多,需要一个一个确定是否导入成功# 导入类库from pandas import read_csvfrom pandas.plotting import scatter_matrixfrom matplotlib import pyplotfrom sklearn.model_selection import train_test_splitfrom skle...
2020-03-05 22:19:44 397
原创 Opencv基础自学二十六(剔除杂点)
import cv2import numpy as npsrc = cv2.imread(r"D:/example/b.png")gray=cv2.cvtColor(src,cv2.COLOR_BGR2GRAY)#转灰度#cv2.imshow("gray",gray)canny1 = cv2.Canny(gray,100, 150)#滤镜cv2.imwrite('Y:/cv_can...
2020-02-04 22:17:04 2545
原创 Opencv基础自学二十五(闭操作)
import cv2 as cvimport numpy as npdef close_demo(image): print(image.shape) gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY) #灰度 ret, binary = cv.threshold(gray, 0, 255, cv.THRESH_BINARY...
2020-02-04 22:16:58 137
原创 Opencv基础自学二十四(开操作)
import cv2 as cvimport numpy as npdef open_demo(image): print(image.shape) gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)#灰度 ret, binary = cv.threshold(gray, 0, 255, cv.THRESH_BINARY_IN...
2020-02-02 12:57:36 180
原创 Opencv基础自学二十三(腐蚀)
import cv2 as cvimport numpy as npdef dilate_demo(image): print(image.shape) gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)#变成灰度 ret, binary = cv.threshold(gray, 0, 255, cv.THRESH_BINAR...
2020-02-02 12:57:25 101
原创 Opencv基础自学二十二(膨胀)
import cv2 as cvimport numpy as npdef erode_demo(image): print(image.shape) gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)#变成灰度 ret, binary = cv.threshold(gray, 0, 255, cv.THRESH_BINARY |...
2020-02-02 12:57:23 154
原创 Opencv基础自学二十一(轮廓检测)
import cv2 as cvimport numpy as npdef measure_object(image): gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)#从BGR颜色空间转换到GRAY灰度空间 ret, binary = cv.threshold(gray, 0, 255, cv.THRESH_BINARY | c...
2020-02-02 12:57:16 168
原创 Opencv基础自学二十一(轮廓检测)
import cv2 as cvimport numpy as npdef contours_demo(image):#高斯滤波->灰度->二值->轮廓检测 dst = cv.GaussianBlur(image, (3, 3), 0) # 高斯 gray = cv.cvtColor(dst, cv.COLOR_BGR2GRAY) # 变成灰度 ret, bi...
2020-02-02 12:57:08 184
原创 Opencv基础自学二十(圆检测)
import cv2 as cvimport numpy as npdef detect_circles_demo(image): cv.imshow("input image", src) dst = cv.pyrMeanShiftFiltering(image, 10, 100)#均值偏移滤波 cimage = cv.cvtColor(dst, cv.COLOR_BGR2GRA...
2020-02-02 12:56:58 746
原创 Opencv基础自学十九(人脸识别)
注:这个人脸识别,仅仅是调用了接口,并不是我们想象的那样。import cv2 as cvimport numpy as npdef face_detect_demo(image): gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY) # 灰度,全部是灰度基础上查找 face_detector = cv.CascadeClassifier(...
2020-02-02 12:56:51 148
原创 Opencv基础自学十八(Canny)
import cv2 as cvimport numpy as npdef edge_demo(image): blurred = cv.GaussianBlur(image, (3, 3), 0)#1#高斯模糊,这些值要低,降躁 太高容易#提取不出来 步骤1 高斯滤波 gray = cv.cvtColor(blurred, cv.COLOR_BGR2GRAY)#2 变灰度 edg...
2020-02-02 12:56:43 156
原创 Opencv基础自学十八(拉普拉斯)
import cv2 as cvimport numpy as npdef lapalian_demo(image):#拉普拉斯 dst = cv.Laplacian(image, cv.CV_32F)#原生拉普拉斯 lpls = cv.convertScaleAbs(dst) cv.imshow("lapalian_demo", lpls)print("--------- P...
2020-02-02 12:56:31 160
原创 Opencv基础自学十七(sobel)
import cv2 as cvimport numpy as npdef sobel_demo(image): grad_x = cv.Scharr(image, cv.CV_32F, 1, 0) # 图像 图像深度,支持src.depth()和ddepth的组合 x方向上差分阶数 y方向差分阶数 1, 0=》对X求一阶导 grad_y = cv.Scharr(image, cv...
2020-02-02 12:56:24 184 1
原创 Opencv基础自学十六(二值图像)
import cv2 as cvimport numpy as npdef threshold_demo(image): #全局阈值 gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)#变为灰度 ret, binary = cv.threshold(gray, 127, 255, cv.THRESH_BINARY | cv.THRESH_OTSU...
2020-02-01 16:57:42 265
原创 Opencv基础自学十五(图像对比)
#巴氏距离 相关性#直方图,颜色有255,然后分别统计有多少个import cv2 as cvimport numpy as npfrom matplotlib import pyplot as pltdef create_rgb_hist(image): h, w, c = image.shape rgbHist = np.zeros([16*16*16, 1], np.f...
2020-02-01 16:57:30 353
原创 Opencv基础自学十三(直方图)
import cv2 as cvimport numpy as npfrom matplotlib import pyplot as pltdef plot_demo(image):#灰度直方图 plt.hist(x=image.ravel(),bins=256,range=[0,256]) plt.show("直方图") # hist =》ravel() 英语 (散开,解开)将...
2020-02-01 16:56:02 139
原创 Opencv基础自学十四(直方图均衡化)
import cv2 as cvimport numpy as npfrom matplotlib import pyplot as plt#直方图均衡化必须先灰度化def equalHist_demo(image): gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY) dst = cv.equalizeHist(gray) #自动调整图像对...
2020-02-01 16:55:58 223
原创 Opencv基础自学十二(双边滤波和均值迁移)
import cv2 as cvimport numpy as np#双边滤波,俗称滤镜def bi_demo(image): dst=cv.bilateralFilter(src=image,d=0,sigmaColor=100,sigmaSpace=15) cv.imshow("bi_demo",dst) #d bilateralFilter #d参数表示在过滤期间使用的...
2020-02-01 16:55:51 277
原创 Opencv基础自学十二(高斯模糊)
import cv2 as cvimport numpy as npdef clamp(pv): if pv>255: return 255 if pv<0: return 0 else: return pvdef gaussian_noise(image): h,w,c=image.shape for row in range(h): for ...
2020-02-01 16:54:33 149
原创 Opencv基础自学十一(中值滤波)
import cv2 as cvimport numpy as np#中值滤波 保留图像的边缘细节 滤波模板的尺寸大小,必须是大于1的奇数,如3、5、7……def median_blur_demo(image): #中值模糊 对椒盐噪声有很好的去燥效果 dst=cv.medianBlur(image,5) cv.imshow("median_blue_demo",dst)#对图像...
2020-02-01 16:52:38 261
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