The tag has no wiki summary.

learn more… | top users | synonyms

2
votes
3answers
174 views

Count unique visitors by group of visited places

I'm facing the problem of counting the unique visitors of groups of places. Here is the situation: I have visitors that can visit places. For example, that can be internet users visiting web pages, ...
0
votes
1answer
98 views

Does it make sense to express reliability as a ratio of number of tests and system failures? [closed]

I have seen a reliability of the system expressed like this: Rel=No of tests executed / Sum of crashes or other critical events Does it make sense and what actually is the output?
0
votes
2answers
135 views

Permutation tests for large sequences

I would like to perform a permutation test on a particularly large data set, i.e. around 4 million entries. Basically, I need to get some number of random permutations of this data set. Usual way to ...
8
votes
1answer
11k views

Programming language trends

Are there some statistics out there that show the approx. number of users that popular programming languages have and the rate this number increases over time?
7
votes
5answers
726 views

Where is this from (originally)?: “80% of the lifetime cost of a piece of software goes to maintenance”

In the Sun Java coding conventions document (here: http://www.oracle.com/technetwork/java/codeconv-138413.html), it states: "80% of the lifetime cost of a piece of software goes to maintenance" Does ...
1
vote
1answer
74 views

Even distribution through a chain of resources

I'm working on an algorithm which routes tasks through a chain of distributed resources based on a hash (or random number). For example, say you have 10 gateways into a service which distribute tasks ...
0
votes
4answers
144 views

Do commercial statistical calculators calculate with a high degree of arbitrary precision or just floating point precision? [closed]

Do commercial statistical calculators like Minitab or SAS (and open source like R) perform statistical analysis with very high precision? Or do they just use floating point (or double) precision? I ...
-1
votes
2answers
377 views

Word recognition in a string without spaces or punctuation marks

I have a small C# project that reads a file and gives me an output: a string that does not contain spaces nor any types of punctuation marks. It may also contain a few misspellings. Ex. Output: ...
1
vote
1answer
89 views

Is it possible to get probabilities from a support vector machine?

From what I understand, SVM's take a discrete number of x and y values from which to learn from, then when given new x values map it to one y value (category). Is it possible to use SVM's or something ...
0
votes
1answer
109 views

scipy.stats.percentileofscore() wrong?

i'm a data scientist and python noob, but I seem to have found a bug with scipy.stats.percentileofscore. it may be "by design" but please bear with me. if you have an array, you will get an upper ...
0
votes
1answer
51 views

How do I mutate a value in a genetic algorithm using Gaussian distribution?

I've been reading 'Introduction to Evolutionary Algorithms'. This method is stated, but not described, and I can't find anything more specific online. p44/45 of 2nd Ed for reference. "adding to the ...
3
votes
6answers
243 views

Unit Testing with an Optimization Problem

Suppose I'm making an algorithm that identifies the subject of a picture. It could be anything that a computer doesn't do that well, but I'm not expecting to get the right answer every time - 80% is ...
11
votes
9answers
857 views

Learning the rules of chess

A similar question asks whether a computer can learn to play optimally in chess by analyzing thousands of games. If a machine can look at the state of the board for a few games of chess (or a few ...
5
votes
5answers
844 views

How did they count the number of lines of code executed at runtime?

There was a PC game released in 2001 called Black & White by Lionhead studios in which there was a lengthy statistics page which updated in real-time. There were stats such as how many people ...
3
votes
1answer
133 views

How to do inference in a card game?

In the game there are 5 players, each with 8 cards in hand. No other card is present. Using Monte Carlo (MCTS) I run many simulations of the game from the current state to the end of the match. In ...
1
vote
0answers
163 views

Algorithm for generating hyperexponential distribution

I need to generate a hyperexponential distribution for my project. I have already implemented a poisson generating algorithm given by Donald Knuth, but I couldn't find an algorithm for generating a ...
3
votes
1answer
240 views

Algorithm, AI, or intelligent agent suggestions for ingesting poorly-formatted & variable data from different document types

Thanks for looking! Background I have been tasked with writing a program to normalize and ingest data from various sources to a common database. For the sake of simplicity, let's say that the ...
1
vote
2answers
366 views

Statistics collection engine for C++ systems

We have a research project with idea->prototype->statistics development cycle. Anyway, our final product is a prototype, so the statistics collection suite is not used persistently. Supposing I have ...
11
votes
4answers
8k views

Where can I get some sample text? [closed]

I am trying to get statistics on 2-character sequence combination frequencies for the English language for a project I'm working on. It's very important that the results are as precise as possible. ...
3
votes
2answers
142 views

Randomness of wrapped RNG

There are plenty of questions around regarding random number generation, but I couldn't find anything that exactly matched my question. Apologies if I missed one. Most random number generators in ...
17
votes
3answers
13k views

Where can I find statistics on worldwide developers and software companies? [closed]

I try to find an answer of a very difficult question. The question is: How many developers and how many software companies are there in the world? For example if I check the Statistic Austria ...
3
votes
2answers
252 views

statistics for checking imported data?

I'm working on a data migration of several hundred nodes from a Drupal 6 to a Drupal 7 site. I've got the data exported to the new site and I want to check it. Harkening back to my statistics classes, ...
4
votes
4answers
329 views

Is code that terminates on a random condition guaranteed to terminate?

If I had a code which terminated based on if a random number generator returned a result (as follows), would it be 100% certain that the code would terminate if it was allowed to run forever. while ...
4
votes
1answer
93 views

Statistical Software Quality Control References

I'm looking for references about hypothesis testing in software management. For example, we might wonder whether "crunch time" leads to an increase in defect rate - this is a surprisingly difficult ...
1
vote
1answer
93 views

How would I go about measuring the impact an article has on the internet?

For an application of mine, I analyze the sentiment of articles, using NLTK, to display sentiment trends. But right now all articles weigh the same amount. This does not show a very accurate picture ...
0
votes
3answers
682 views

Get system info from C program?

I'm writing a little program in C that I want to use to output some system stats to my HD44780 16x2 character display. The system I'll be working with is a Debian ARM system and, although irrelevant, ...
3
votes
3answers
1k views

distribution of programming languages in embedded systems

I am looking for statistics concerning the distribution of programming languages in the embedded sector. Do you know any good websites, articles or books? I found this as a first reference but am ...
13
votes
1answer
956 views

What proportion of programming is done for embedded systems?

What proportion of programming is done for embedded systems? More generally, please share any interesting statistics on programmers by domain, e.g. real-time/business/UI/gaming/… How you define the ...
0
votes
2answers
351 views

why is a naturally ordered set generated at 9 but not 10 digits

code found at: fatal error...Java Runtime Environment: EXCEPTION_ACCESS_VIOLATION Presuming that the problem indicated above is due to the test app and not due specifically to method ...
6
votes
2answers
63 views

Testing applications with statistical features [duplicate]

Possible Duplicate: How should I test randomness? Are their some techniques described for testing applications that have as a requirement some statistical or probabilistic features? They ...
5
votes
4answers
3k views

Google Analytics with multiple environments

We are planning to use Google Analytics in our organization and I am in charge for setting it up. I was wondering how to deal with multiple environments. We sure do not want to collect data during ...
0
votes
1answer
478 views

Impact of Website Redesign on Google Analytics

I just finished a redesign for a website that is currently using Google Analytics. I want to continue to use Google Analytics, but I'm not sure if I should create a new profile for the new site or ...
0
votes
2answers
233 views

What companies hire data scientists? [closed]

What kind of data jobs are there in the software industry for someone with a B.S. in pure mathematics and a minor in statistics but with little experience in programming? I want to work on the data ...
3
votes
5answers
632 views

How important would a statistics course be to a software developer?

How important would a statistics course be to a software developer? More specifically given the description: 2510 Statistics for Physical Science Students (F) & (W) examines elements of ...
2
votes
1answer
306 views

Calculate statistics for web application

I'm planning to add a couple of usage statistics to my web application. Some common things like: registered users, amount of comments/posts, etc. over time (last 24 hours / last week / last month / ...
9
votes
1answer
397 views

what do programmers dealing with data driven/machine learning related programming need?

Given the increasing amount of data generated through different web services ( social network, etc), there are must be more and more programmers who are familiar with machine learning and/or ...
3
votes
2answers
196 views

Google Analytics and customers privacy

I work in a company that sells SaaS web applications for HR and financial issues. Our customers are key accounts to which we guarantee the privacy of their data, for obvious reasons. We need to make ...
7
votes
6answers
975 views

Are 70% of programs/business applications/something based in COBOL?

I heard this number and a quick google search reveals a whole lot of touting this number and absolutely zero data (honestly most articles promoting COBOL read like 95% propoganda). Perhaps it's true ...
5
votes
2answers
373 views

What kind of metrics should I collect for a website/web app

I have a website that allows users to register for accounts, login, and renew an annual membership fee. They can also update their personal profile, their personal profile, look at a list of their ...
10
votes
2answers
715 views

Design: Object method vs separate class's method which takes Object as parameter?

For example, is it better to do: Pdf pdf = new Pdf(); pdf.Print(); or: Pdf pdf = new Pdf(); PdfPrinter printer = new PdfPrinter(); printer.Print(pdf); Another example: Country m = new ...
3
votes
1answer
265 views

Incanter for real world statistical projects

I'm interested in statistical computing. R is a leader platform obviously but what about Incanter? Incanter is at the top of my list since I'm a Clojure and JVM guy. Do you have any real world ...
0
votes
3answers
841 views

Debugging Facts and Statistics [closed]

I'm trying to find a research answering a question: "How much time developers spend on development vs debugging?". I found several interesting links on the Net but they are little too old. This 2002 ...
7
votes
2answers
163 views

When profiling a function for time use, what information is desirable?

I'm writing a program similar to Python's timeit module. The idea is to time a function by executing it anywhere from 10 to 100,000 times depending on how long it takes and then report results. I've ...