英语翻译This question will introduce you to a method for comparing documentsbased on ideas in linear algebra.Suppose you are given a set of n documents numbered 1 through n.Suppose there isa list of m words numbered 1 through m that are of intere

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英语翻译This question will introduce you to a method for comparing documentsbased on ideas in linear algebra.Suppose you are given a set of n documents numbered 1 through n.Suppose there isa list of m words numbered 1 through m that are of intere

英语翻译This question will introduce you to a method for comparing documentsbased on ideas in linear algebra.Suppose you are given a set of n documents numbered 1 through n.Suppose there isa list of m words numbered 1 through m that are of intere
英语翻译
This question will introduce you to a method for comparing documents
based on ideas in linear algebra.
Suppose you are given a set of n documents numbered 1 through n.Suppose there is
a list of m words numbered 1 through m that are of interest to you.De\x0cne vectors x1
through xn as follows:the jth entry of xi is the number of times the jth word appears
in the ith document.You can think of xi as a summary of the information in the ith
document.
I selected three articles from Wikipedia and counted the number of times the words
fur,blood,bone,feather appeared in each.Here are the results:
Article fur blood bone feather
Mammal 6 4 15 0
Reptile 1 5 0 3
Bird 0 7 5 43
You are encouraged to use a calculator or a computer for the following questions.
a.Write down the vectors x1,x2,x3,for the words given.
b.We de\x0cne the similarity of documents i and j as
xi \1 xj
kxik kxjk
Compute the similarity between documents 1 and 2,between documents 2 and 3,
and documents 1 and 3.According to this measure is document 2 more similar to
document 1 or to document
c.Is it possible to have negative similarity between two documents?Why or why not?

英语翻译This question will introduce you to a method for comparing documentsbased on ideas in linear algebra.Suppose you are given a set of n documents numbered 1 through n.Suppose there isa list of m words numbered 1 through m that are of intere
这道题目会教你一种用线性代数的知识比较数据的方法.
假设现有一组从1到n的数据和一组对照数据从1标记至m.定义如下向量从x1至xn:第j个xi的数据次数是第j个词在第i个文档的位置.可以把xi数据表当作是以i为标记的文档摘要.
我从维基百科中选择了3篇文章并计算了词组:皮毛,血液,骨头,羽毛在这些文章中分别出现了多少次.以下是我的计算结果:
文章名 皮毛 血液 骨头 羽毛
哺乳动物 6 4 15 0
爬行动物 1 5 0 3
鸟类 0 7 5 43
你可以使用计算器或者电脑来帮助解决以下问题.
a.写下与给出的词组对应的向量 x1,x2,x3
b.我们把数据i 和数据j 的相似处定义为
xi \1 xj
kxik kxjk
计算出数据1 和数据2,数据2和数据3,以及数据1和数据3之间的相似结果.根据你得出的结果,2号数据组与1号数据组更相似还是与3号数据组更相似呢?
c.两组数据间有可能出现负数值的相似结果吗?如有可能,请简要回答;如果没可能,请解释原因.

这个问题会介绍给你的方法来比较文件
基于理念在线性代数。
假设你给出一组n文件数1至vi . vt。假设有
我民的一张表1至米的话,您的兴趣。x1 Dene向量
通过jth如下:中国进入的次数烯的jth词出现
在与文件。你能想到的喜摘要制作中的信息
文件。
我选择三篇文章,并计算了维基的次数的词语
皮毛、血液、骨格、羽毛出现在每件。这...

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这个问题会介绍给你的方法来比较文件
基于理念在线性代数。
假设你给出一组n文件数1至vi . vt。假设有
我民的一张表1至米的话,您的兴趣。x1 Dene向量
通过jth如下:中国进入的次数烯的jth词出现
在与文件。你能想到的喜摘要制作中的信息
文件。
我选择三篇文章,并计算了维基的次数的词语
皮毛、血液、骨格、羽毛出现在每件。这里是结果:
第三皮毛血骨的羽毛
哺乳动物6 4 15 0
爬行动物1五0 3
鸟0 7 5 43
鼓励使用计算器或一个计算机为下面的问题。
。写下向量,x1冷却,那句话,三分,给你们。
b。我们dene文书的相似性和j
喜xj
kxik kxjk
计算之间的相似文件1和2 2号和3号文件之间,
1号和3号文件。根据这一措施更类似于2文件
文件1或记录3 ?
c。是否有可能有负面之间的相似两份文件吗?为什么能或为什么不能?

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This question will introduce you to a method for comparing documents based on ideas in linear algebra.
下面这个问题将介绍如何用线性代数的方法来比较文档。
Suppose you are given a set of n documents numbered 1 through n...

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This question will introduce you to a method for comparing documents based on ideas in linear algebra.
下面这个问题将介绍如何用线性代数的方法来比较文档。
Suppose you are given a set of n documents numbered 1 through n. Suppose there is a list of m words numbered 1 through m that are of interest to you.
假设现有一组文档资料共n个文件,编号为1,2,...n; 同时你所关心的一些单词指标有m个,编号为1,2,...m.
De ne vectors x1 through xn as follows:
向量 x1 , ... xn 定义如下:
(译者注:这里定义的是作为向量的x1,作为向量的x2.....而不是向量 [x1,...xn], 因而下文的定义实际上是定义了对于向量xi的各分量xi1,xi2...xij,...xim的意义。)
the jth entry of xi is the number of times the jth word appears in the ith document.
xi的第j项表示:在序号为i的文档中,编号为j的单词出现的次数。
You can think of xi as a summary of the information in the ith document.
事实上可以认为xi 是包含第i号文档中的所有信息。
I selected three articles from Wikipedia and counted the number of times the words fur, blood, bone, feather appeared in each.
例如:从Wikipedia中选取三个词条,考察每篇词条中如下关键词汇出现的情况:[fur](皮毛), [blood](血液), [bone](骨骼), [feather](羽毛)。
Here are the results:
结果如下:
词 条 标 题 fur blood bone feather
Mammal(哺乳动物) 6 4 15 0
Reptile(爬行动物) 1 5 0 3
Bird(鸟类) 0 7 5 43
You are encouraged to use a calculator or a computer for the following questions.
解决以下问题(可用计算器或计算机完成):
a. Write down the vectors x1, x2, x3, for the words given.
a. 根据所给信息,写出向量x1, x2, x3。
b. We de ne the similarity of documents i and j as
b.按照如下方式给出判定两文档i与j之间的[similarity](暂译为相似度)准则:
(译者注:此处应为求行列式值,为明了将下标加以括号区分,矩阵第二行的x前面的k为系数。)
x(i) \1 x(j)
k*x(ik) k*x(jk)
Compute the similarity between documents 1 and 2, between documents 2 and 3, and documents 1 and 3. According to this measure is document 2 more similar to document 1 or to document 3?
计算文件1与文件2之间、文件2与文件3之间、以及文件1与文件3之间,各相似度[similarity]是多少。根据这种判断方式,文件2与哪个文件相似度更高?1还是3?
c. Is it possible to have negative similarity between two documents? Why or why not?
两文件之间的相似度有可能为负数吗?为什么?

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这个问题会介绍给你的方法来比较文件
基于理念在线性代数。
假设你给出一组n文件数1至vi . vt。假设有
我民的一张表1至米的话,您的兴趣。x1 Dene向量
通过jth如下:中国进入的次数烯的jth词出现
在与文件。你能想到的喜摘要制作中的信息
文件。
我选择三篇文章,并计算了维基的次数的词语
皮毛、血液、骨格、羽毛出现在每件。这...

全部展开

这个问题会介绍给你的方法来比较文件
基于理念在线性代数。
假设你给出一组n文件数1至vi . vt。假设有
我民的一张表1至米的话,您的兴趣。x1 Dene向量
通过jth如下:中国进入的次数烯的jth词出现
在与文件。你能想到的喜摘要制作中的信息
文件。
我选择三篇文章,并计算了维基的次数的词语
皮毛、血液、骨格、羽毛出现在每件。这里是结果:
第三皮毛血骨的羽毛
哺乳动物6 4 15 0
爬行动物1五0 3
鸟0 7 5 43
鼓励使用计算器或一个计算机为下面的问题。
。写下向量,1冷却,那句话,三分,给你们。
b。我们dene文书的相似性和j
喜xj
kxik kxjk
计算之间的相似文件1和2 2号和3号文件之间,
1号和3号文件。根据这一措施更类似于2文件
文件1或记录3 ?
c.是否有可能有负面之间的相似两份文件吗?为什么能或为什么不能?

收起

英语翻译:Please update this item in question as closed 英语翻译This question is too difficult.I can't ( ) ( ) it . 英语翻译I do not know answer this question,but I think he ----.A do B does this question is very difficult ( ) Everybody stop ask this question answer this question什么意思 For purposes of this question... If someone( )you this question 英语翻译the question in croatian was translation by ivo banac,and the question was mine I take full credit or discredit for this 英语翻译This progress may involve:purging,bleeding,blocking,grounding,draining,cooling,blanking,etc.specific/unique to the equipment in question. 英语翻译“This is more true than when the man in question is a rude and corse man.”怎么翻译 英语翻译nobody can answer this question,A.can he B.can they C.can't he D.can't they 英语翻译The answer to this question leads us to the heart of how knowledge is physically stored in the brain. 英语翻译It's ________________________________the question 英语翻译Question 怎么读出来 英语翻译原文如下:A written statement in accordance with theattached form in which the Offerer confirms hisagreement to be bound by all provisions and terms ofthe technical ,financial and juridical book ofconditions of this call for offer wi 英语翻译中文:口腔科WI-FI网络讯号已覆盖此处.英文翻译是要使用现在完成时还是一般过去时?一下两个范本那个比较合适:1.Dental WIFI Network signal had been covened in this place.(现在完成时)2.Dent ls this question easy 的意思是什么?