need help with formula

Programming Questions

clankill3r

in Programming Questions • 1 year ago

I could do this when i'm fit, it such a simple thing but i'm tired...

int totalWords = 200;
int negative = 25;
int positive = 10;
float rating = ??;

I want a rating between 1 and 100.

please help

Replies(5)

jbum

Re: need help with formula

1 year ago

float rating = 1 + random(100);

Assuming this isn't quite what you're looking for, could you explain more clearly what those variables represent?

What is totalWords?

Are you trying to compute a single user's rating? An *average* rating, perhaps?

clankill3r

Re: need help with formula

1 year ago

I have news articles and i want to rate them where 0 is very negative, around 50 is neutral and around 100 is very positive.

totalWords will be the total words of an article.

negative the negative words within that and positive the positive words.

jbum

Re: need help with formula

1 year ago

I know how to do this, but I'd prefer to not hand it to you on a plate.

Let's start by solving the simpler problem of making a review that goes from 0.0 (for bad) to 1.0 (for good). You can always multiply this number by 100 to make it go from 0 to 100.

N is the number of words that have been rated (negative + positive)

Negative Positive Result

0 N 1

N/2 N/2 .5

N 0 0

You'll notice that the result you are looking for looks proportional to the number for positive. Is there something you can do to the positive number to get it to go from (0 to 1) instead of (0 to N) ?

clankill3r

Re: need help with formula

1 year ago

i can norm the value right?

jbum

Re: need help with formula

1 year ago

Yep. Normalize by /N Then multiply it by 100.

Or let the map function do the work.

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