购物网站最重要的功能,网络科技公司上班做些什么,外贸业务怎么利用网站开发客户,网站建设制作方法机器学习朴素贝叶斯算法朴素贝叶斯算法 (Naive Bayes Algorithm) Naive Bayes is basically used for text learning. Using this algorithm we trained machine from text. 朴素贝叶斯基本上用于文本学习。 使用此算法#xff0c;我们从文本中训练了机器。 Let’s understan…机器学习朴素贝叶斯算法 朴素贝叶斯算法 (Naive Bayes Algorithm) Naive Bayes is basically used for text learning. Using this algorithm we trained machine from text. 朴素贝叶斯基本上用于文本学习。 使用此算法我们从文本中训练了机器。 Let’s understand it with an example: 让我们通过一个例子来理解它 Question: 题 There are two writers SARA and CHRIS .The probability of writing the word LOVE ,DEAL and LIFE is 0.1,0.8 and 0.1 respectively by CHRIS and 0.5,0.2 and 0.3 by SARA. The probability of sending mail by CHRIS and SARA is 0.5, and then answer this question: SARA和CHRIS有两个作者。CHRIS的单词“ LOVE”“ DEAL”和“ LIFE”的书写概率分别为SARA和0.5、0.2和0.3分别为0.1,0.8和0.1。 CHRIS和SARA发送邮件的概率为0.5然后回答以下问题 Who will more likely send the mail LOVE LIFE? 谁更有可能发送邮件“ LOVE LIFE” What is the probability that LOVE LIFE is send by CHRIS? CHRIS发送“ LOVE LIFE”的可能性是多少 Solution: 解 Ans 1) 答1) P(CHRIS,LOVE LIFE)P(CHRIS) *P(LOVE LIFE|CHRIS)
0.5 * (0.1 *0.1) 0.005
P(SARA,LOVE LIFE)P(SARA) * P(LOVE LIFE|SARA)
0.5 * (0.5 * 0.3)
0.075
Hence, SARA is more likely to send mail LOVE LIFE.
Ans 2) 答2) Normalize:
P(LOVE LIFE)P(CHRIS,LOVE LIFE)P(SARA,LOVE LIFE)
0.0050.075
0.08
Probability of sending mail LOVE LIFE by CHRIS (P(CHRIS|LOVE LIFE))
P(CHRIS,LOVE LIFE)/P(LOVE LIFE)
0.005/0.08
0.0625
Similarly for probability of sending mail by SARA we can divide 0.075 by the total of two i.e. 0.08. 同样对于通过SARA发送邮件的可能性我们可以将0.075除以2的总和即0.08。 HENCE THIS PROCESS IS THE ALGORITHM FOR BAYES RULE. 因此此过程是贝叶斯规则的算法。 翻译自: https://www.includehelp.com/ml-ai/naive-bayes-algorithm.aspx机器学习朴素贝叶斯算法
