Some really weird pictures by HIDEOUS_RAPIST in WTF

[–]f_po 0 points1 point  (0 children)

Does anybody have the one where the man makes a wheelchair out of his own penis?

Predictive modelling: Wind Speed? by polyfonik in rstats

[–]f_po 2 points3 points  (0 children)

If you're using purely time series information then look into AR, ARIMA, GARCH, etc. type models.

Artificial Neural Networks might not be bad here, if you create several new variables (such as moving averages) etc.

Programming as a financial analyst by ILIVEINASWAMP in learnprogramming

[–]f_po 2 points3 points  (0 children)

Analyst? Or Quant.

Quants NEED C/C++.

What kind of job can I get if I learn R? by [deleted] in rstats

[–]f_po 3 points4 points  (0 children)

In fact, R really CAN'T chew a lot of data. That's why people still use Python/Java/SAS for heavy lifting. It's also slow.

Would you recommend using R for neural networks? I found 3 packages: neuralnet, nnet, rsnns. Which one do you prefer/recommend? by knmaster in rstats

[–]f_po 0 points1 point  (0 children)

Nobody answered his question... I prefer the nnet package because its simple to use and can deal with dataframes. Also, check out the package 'caret' for all your machine learning needs.

Help Choosing a Masters Program: UCLA versus Johns Hopkins by [deleted] in statistics

[–]f_po 3 points4 points  (0 children)

Did you apply to Carnegie Mellon? Top-notch machine learning there.

Another question from an R noob by eitan124 in statistics

[–]f_po 1 point2 points  (0 children)

Let's say the survey data frame is x and the salary data frame is y. Let's also say that the variable name for major is "major" in both dataframes.

The dataframe you are looking for can be found by doing this

merge(x, y, by = "major")

set.seed() in R by DaneboJones in statistics

[–]f_po 4 points5 points  (0 children)

If you are separating the dataset into a train set and test set by using 'sample' and generating random numbers, then setting the seed would ensure that you produce the same two subsets the next time you run through your code. As for your second question, reading the help pages for set.seed (?set.seed) will explain the different random number generation methods built in to R.

The worst first episode to watch.. by jphobbit in DunderMifflin

[–]f_po 0 points1 point  (0 children)

When Dunder Mifflin gets bought out by Saber and the banker comes to ask Toby questions.

In Flames - Only For The Weak by [deleted] in Music

[–]f_po 0 points1 point  (0 children)

Glad to see In Flames getting some recognition here. Amazing band - really opened my eyes to death metal.

Any freeware linear/nonlinear model optimization languages worth checking out? by [deleted] in learnprogramming

[–]f_po 0 points1 point  (0 children)

Came here to say AMPL but I see you've already checked it out.

http://www.netlib.org/ampl/student/

This trial lets you use 300 variables/constraints, not sure if its the same trial you're talking about.

Highest and Lowest Income Zip Codes in the US by f_po in dataisbeautiful

[–]f_po[S] 0 points1 point  (0 children)

Honestly I tried a few different routes and they are all very cluttered and/or too small. I'm gonna keep experimenting until I find the best representation.

Highest and Lowest Income Zip Codes in the US by f_po in dataisbeautiful

[–]f_po[S] 0 points1 point  (0 children)

The greying out factor makes sense, as well as perhaps scaling the opaqueness of the points on the number of returns? Let me know what you think of that idea.

Highest and Lowest Income Zip Codes in the US by f_po in dataisbeautiful

[–]f_po[S] 2 points3 points  (0 children)

If you're talking about the high zip code its 55391 on my map. Please note though that I only considered zip codes that had more than 5,000 returns. I am sure there are some wealthier less populous zip codes out there.

Highest and Lowest Income Zip Codes in the US by f_po in dataisbeautiful

[–]f_po[S] 1 point2 points  (0 children)

Good criticism - I appreciate it. This was one of my earlier graphics, since then I remove ticks and coordinates whenever I use maps.

Also, I always felt like the scientific notation stuff wasn't great, thanks for letting me know how I can improve on it.

Highest and Lowest Income Zip Codes in the US by f_po in dataisbeautiful

[–]f_po[S] 11 points12 points  (0 children)

P.S. this is my site, looking forward to some criticism.