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How to compute the similarity between two tem>x m>t documents?
... TF-IDF vectors and then compute the cosine similarity between them. Any tem>x m>tbook on information retrieval (IR) covers this. See esp. Introduction to Information Retrieval, which is free and available online.
Computing Pairwise Similarities
TF-IDF (and similar tem>x m>t transformations) are implemented...
Does MySQL ignore null values on unique constraints?
...multiple NULLs in a column with a unique constraint.
CREATE TABLE table1 (m>x m> INT NULL UNIQUE);
INSERT table1 VALUES (1);
INSERT table1 VALUES (1); -- Duplicate entry '1' for key 'm>x m>'
INSERT table1 VALUES (NULL);
INSERT table1 VALUES (NULL);
SELECT * FROM table1;
Result:
m>x m>
NULL
NULL
1
This is n...
How can I check a C# variable is an empty string “” or null? [duplicate]
...
@Lion Liu: Actually I think PHP has em>x m>actly as much to offer. See: php.net/manual/en/function.empty.php
– Milan
Feb 2 '16 at 20:09
4
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Blocks on Swift (animateWithDuration:animations:completion:)
I'm having trouble making the blocks work on Swift. Here's an em>x m>ample that worked (without completion block):
7 Answers
...
Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?
...hod.
The only thing I changed from the original demo was after the lines
m>x m> += movementm>X m> * 2;
y += movementY * 2;
I added two lines to represent random movement:
m>x m> += Math.floor(Math.random()*3 - 1);
y += Math.floor(Math.random()*3 - 1);
There are still plenty of things you could improve, but ...
Why does pattern matching in Scala not work with variables?
...lse")
}
}
To avoid accidentally referring to variables that already em>x m>isted in the enclosing scope, I think it makes sense that the default behaviour is for lowercase patterns to be variables and not stable identifiers. Only when you see something beginning with upper case, or in back ticks, d...
How to get the seconds since epoch from the time + date output of gmtime()?
...If you got here because a search engine told you this is how to get the Unim>x m> timestamp, stop reading this answer. Scroll down one.
If you want to reverse time.gmtime(), you want calendar.timegm().
>>> calendar.timegm(time.gmtime())
1293581619.0
You can turn your string into a time tuple...
Comment out tem>x m>t in R Markdown (Rmd file)
In an R Markdown ( .Rmd ) file, how do you comment out unused tem>x m>t? I'm not referring to the tem>x m>t in the R code chunk, but the general tem>x m>ts, like % in LaTem>x m> for em>x m>ample.
...
Difference between Apache Cm>X m>F and Am>x m>is
What are the advantages of using Apache Cm>X m>F over Apache Am>x m>is and vice versa?
6 Answers
...
How do I use IValidatableObject?
... }
public IEnumerable<ValidationResult> Validate(ValidationContem>x m>t validationContem>x m>t)
{
var results = new List<ValidationResult>();
if (this.Enable)
{
Validator.TryValidateProperty(this.Prop1,
new ValidationContem>x m>t(this, null, ...