metrics

Is my python implementation of the Davies-Bouldin Index correct?

由 给你一囗甜甜゛ 提交于 2019-12-21 02:45:37
问题 I'm trying to calculate the Davies-Bouldin Index in Python. Here are the steps the code below tries to reproduce. 5 Steps : For each cluster, compute euclidean distances between each point to the centroid For each cluster, compute the average of these distances For each pair of clusters, compute the euclidean distance between their centroids Then, For each pair of clusters, make the sum of the average distances to their respective centroid (computed at step 2) and divide it by the distance

OCR: weighted Levenshtein distance

由 ⅰ亾dé卋堺 提交于 2019-12-21 02:33:09
问题 I'm trying to create an optical character recognition system with the dictionary. In fact I don't have an implemented dictionary yet=) I've heard that there are simple metrics based on Levenstein distance which take in account different distance between different symbols. E.g. 'N' and 'H' are very close to each other and d("THEATRE", "TNEATRE") should be less than d("THEATRE", "TOEATRE") which is impossible using basic Levenstein distance. Could you help me locating such metric, please. 回答1:

学习笔记之scikit-learn

由 别等时光非礼了梦想. 提交于 2019-12-21 01:41:06
scikit-learn: machine learning in Python — scikit-learn 0.20.0 documentation https://scikit-learn.org/stable/index.html Simple and efficient tools for data mining and data analysis Accessible to everybody, and reusable in various contexts Built on NumPy, SciPy, and matplotlib Open source, commercially usable - BSD license scikit-learn - Wikipedia https://en.wikipedia.org/wiki/Scikit-learn Scikit-learn (formerly scikits.learn ) is a free software machine learning library for the Python programming language. [3] It features various classification , regression and clustering algorithms including

《Hadoop 本地运行模式-官方Grep案例--- 报错：未知的名称或者服务》

由 孤街醉人 提交于 2019-12-20 17:40:41
Hadoop 本地运行模式-官方Grep案例— 报错：未知的名称或者服务 1、执行命令 [root@Hadoop100 hadoop-2.7.2]# bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.2.jar grep input output ‘dfs[a-z.]+’ 错误提示： 19/12/20 14:39:23 INFO Configuration.deprecation: session.id is deprecated. Instead, use dfs.metrics.session-id 19/12/20 14:39:23 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=JobTracker, sessionId= 19/12/20 14:39:23 INFO metrics.MetricsUtil: Unable to obtain hostName java.net.UnknownHostException: Hadoop100: Hadoop100: 未知的名称或服务 2、执行 vim /etc/sysconfig/network vim /etc/hosts 两者的服务名称是否一样。 2.1 执行

Eclipse Juno Metrics Plugins

由 ぐ巨炮叔叔 提交于 2019-12-20 16:31:11
问题 What eclipse metrics plugins exist for the JUNO release of eclipse? I have tried a few general purpose metrics plugins but non of them has functioned properly with the JUNO release of eclipse. Almost forgot, we are using Java as programming language. I want metrics like cyclomatic-complexity, lines of code, method length, parameter excess and so on. 回答1: Check out the following, which work fine on Juno: checkstyle: code style, including method length and others checkstyle again: duplicate

What are the most useful software development metrics? [closed]

由 谁说我不能喝 提交于 2019-12-20 08:29:42
问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I would like to track metrics that can be used to improve my team’s software development process, improve time estimates, and detect

What are the most useful software development metrics? [closed]

由 孤者浪人 提交于 2019-12-20 08:29:12
问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I would like to track metrics that can be used to improve my team’s software development process, improve time estimates, and detect

Clarifying the manual count of Cyclomatic Complexity

由 淺唱寂寞╮ 提交于 2019-12-20 03:05:23
问题 Let's assume that we have a code like this: switch(y) { case 1: case 2: case 3: function(); break; case 4: case 5: case 6: function_2(); break; } Can we get the CC value as 6+1 here? Why a value of 1 is added? If the CC value is considered as 7, is that the number of independent paths? What if a fall through scenario is considered above? As only possible two unique paths are there, 2 +1 =3 Which of the above are correct or are the both of them correct? 回答1: As we know, CC = P+1. Here, P =

李宏毅 Keras2.0演示

由 心不动则不痛 提交于 2019-12-20 01:37:42
李宏毅 Keras2.0演示 不得不说李宏毅老师讲课的风格我真的十分喜欢的。 在keras2.0中，李宏毅老师演示的是手写数字识别（这个深度学习框架中的hello world） 创建网络 首先我们需要建立一个Network scratch，input是28*25的dimension，其实就是说这是一张image，image的解析度是 2 8 ∗ 2 8，我们把它拉成长度是 2 8 ∗ 2 8维的向量。 output呢？ 现在做的是手写数字辨识，所以要决定它是0-9的哪个数字，output就是每一维对应的数字，所以output就是10维。 中间假设你要两个layer，每个layer有500个hidden neuro，那么你会怎么做呢。 如果用Keras的话，首先需要声明一个network model=Sequential() 然后你需要吧第一个hidden layer加进去，需要怎么做呢？很简单，只需要add即可。 model.add(Dense(input_dim=28*28,units=500,activation='relu')) Dense意思就是说你加一个全连接网络，可以加其他的，比如加Con2d，就是加一个convolution layer，这些都很简单。input_dim是说输入的维度是多少，units表示hidden layer的neuro 数，

How do I make Hudson/Jenkins fail if Sonar thresholds are breached?

由 僤鯓⒐⒋嵵緔 提交于 2019-12-18 19:09:01
问题 I am using maven to build my java app, Jenkins for CI and Sonar for metrics. Currently I have a build job that creates the sonar report. (Triggered via a post-build step in Jenkins.) I would like to set this up to fail the build if certain thresholds are met - i.e. any major or blocker violations or Complexity more than 1.7. Any guidance would be appreciated! - L 回答1: Install the build breaker plugin. Fails your build if the code breaches any of the alert thresholds you specify on the project
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