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Closed 10 years ago.
Now. I build a formula for news to get list hot news.
have any factor as pageview, time,content.
what does a solution for this problem?
Thanks
You can try a machine learning approach for this problem.
Extract your features, and give each a numeric value (you can use
the Bag of Words model for content). Note that some feature selection algorithm might be needed.
Manually label large enough set of examples - and give each of them a score according to its importance.
Use linear regression and build a function that evaluates each article and gives it a score.
Now that you have your regression function, you can use it to give score to each article. Use it to achieve the raw score.
For post processing - combine this score with the time in a second function to get the article's final score. #MattBall's suggested link seems like reasonable approach.
Related
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Closed 9 years ago.
I want to research some algorithms for dynamic heightmap generation but I'm not familiar with any. Getting even more dynamic. Whats some theory on how multi-dimensional heightmaps work? i.e. Caves and overhangs. Should I use multiple heightmap images or complex algorithms?
For simple 2D heightmaps the Diamond-square algorithm produces reasonable results, and is fast. There are a few things you can apply over the top of that to make it look more realistic, such as simple erosion, while still being very fast.
For more interesting features... if you want fast results, I'd stick with a 2D heightmap and then add secondary feature entities (i.e. boulders and holes), rather than try to generate a true 3D environment; but of course whether that comes close to being enough depends entirely on what you want to achieve.
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Closed 11 years ago.
What I am doing as a part of my project is comparing and analysing all the noise removal and reduction filters there are in matlab.
Not able to find a comprehensive list of filters that have been built for this very purpose.
Well adding to my question, I wanted a list that would help me understand all the basics of noise removal using filters in matlab.
I have found various links such as this, which proved helpful.
Read the docs for:
http://www.mathworks.com/products/signal/index.html
http://www.mathworks.com/products/statistics/
Loads more at:
http://www.mathworks.com/matlabcentral/fileexchange/
When you have the toolboxes installed, you can also just look at the table of contents in the "Help" browser. Gives a pretty good summary of the options.
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Closed 11 years ago.
I have a big database of jobs, each job has numerical and non numerical attributes like(position,field,salary, needed experience...)
and applicants to jobs that determine some attributes like(age, expected salary...)
I want to create an application that do automatic matching between the jobs and the appropriate candidates*What is the best Algorithm to apply (data mining or artificial intelligence) to implement this app.*
thx for your replies
It seems that what you want is a recommendation algorithm, not matching algorithm.
There is not best recommendation algorithm which work for all cases. You should look into several algorihms and select which suits best for your situation. I recommend you to look at Apache Mahout which implements lots of such recommendation algorithms and is an open-source library.
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Closed 11 years ago.
Assume:
There are hundred students and each on
of them are working on a common
project.
Ideally, being consistent implies that a student works everyday on the project at-least once.
If we have data like this:
Student 1 work day 1(worked)
day 2(worked)
day 3(took a break)
etc
Now is there any algorithm that can be used to check and rank students based on consistency ?
EDIT:
This is not a homework problem. I am developing a plugin in java that rates group work according to consistency. So I was wondering if there was an algorithm that can accurately predict consistency. I was thinking about using standard deviation but if there is something more precise, it would help.
I believe the quantity you are looking for is called variance. This describes consistency, if you were to say, use the time each day that a student works.
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Closed 11 years ago.
I want to know if is there any specific algorithm that can be followed to understand the meaning of a word/sentence/paragraph. Basically, I want to write a program that will take text/paragraph as input and try to find out what its meaning is. And thereby highlight the emotions within the text.
Also, if there is an algorithm to understand things, can the same algorithm be applied to itself? It reduces the quest further to a point where we become interested in knowing meaning of meaning OR rather definition of definition.
You want Natural Language Processing and Semantic Technology. This is still a flourishing area in computer science. Look at things such as a Semantic Reasoner. You can start with Jena. There are also other things you can look at such as Academic Thesis papers.