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Published on 2010-06-14T07:02:56Z
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I import "math.h".
I can use the cos function,
but when I execute cos(0.321139585333178)
the result is 0.948876
If I use the calculator in Mac or use a normal calculator, the result is 0.999984292347418
Can anyone help me to solve that problem?
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I'm wondering if there is a built in function in R that can find the cosine similarity (or cosine distance) between two arrays?
Currently, I implemented my own function, but I can't help but think that R should already come with one :)
Thanks,
Derek
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Hi again :)
I developed some java program to calculate cosine similarity on the basis of TF*IDF. It worked very well. But there is one problem.... :(
for example:
If I have following two matrix and I want to calculate cosine similarity it does not work as rows are not same in length
doc 1
1 2 3
4…
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I need to compare documents stored in a DB and come up with a similarity score between 0 and 1.
The method I need to use has to be very simple. Implementing a vanilla version of n-grams (where it possible to define how many grams to use), along with a simple implementation of tf-idf and Cosine similarity…
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I was given the following forumulae for calculating this
sim=|QnD| / v|Q|v|D|
I went ahed and implemented a class to compare strings consisting of a series of words
#pragma once
#include <vector>
#include <string>
#include <iostream>
#include <vector>
using namespace…
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When you add SQLCMD statements to a pre-deployment or post-deployment file in a database project in Visual Studio 2010. You might see the error "SQL80001: Incorrect syntax near ':'". This is not a real error assuming you have the correct SQLCMD syntax.
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Recently I had a web developer come to me and ask why he was receiving connection errors in his app that was accessing a sql database.
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I need to investigate what clients connected to my application and I am using the netstat command for this. I noticed that sometimes it does not report me the correct machine name.
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I import "math.h".
I can use the cos function,
but when I execute cos(0.321139585333178)
the result is 0.948876
If I use the calculator in Mac or use a normal calculator, the result is 0.999984292347418
Can anyone help me to solve that problem?
>>> More
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- Search for 'Stack Overflow'
Database server: SQL Server 2000 - 8.00.760 - SP3 - Standard Edition
I have a table with 5 columns, in which I want to add a large (300.000) number of records. There is a unique index on the combination of two columns. If I add the records with this unique index in place, SQL Server gives this error…
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