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2
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1answer
52 views

Statistics Software Survey?

Does anyone know of research showing the different types of statistical software used? I'm looking to find out things like what percentage of people use SAS vs. Stata, R, or other packages. I'm be ...
1
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0answers
38 views

Convert latex mathematics equations directly to Python/Matlab Code? [closed]

I am wondering if there is any technique to convert latex mathematics equations directly to code, like Python(numpy,scipy), Matlab? Thanks! I have this problem since I find I sometimes make mistakes ...
3
votes
1answer
56 views

Where can I find tests that validate the output of popular statistical software? (e.g. R, SPSS, SAS)

This has been difficult to search on Google. I've looked on R's website as well. I assume there are test suites that validate that R, SPSS, SAS, et al are giving the right output for a given analysis? ...
0
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0answers
14 views

software reliability modeling

Software Reliability Modelling In a given sample data set of discrete software failure data, list of test cases are given and corresponding to that test case, what are the various software bugs ...
0
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0answers
25 views

Multiple metaregression

My name is Ashley. I'm working on the analyses for my dissertation which involves a meta-analysis of 4 predictors, 1 mediator, and one outcome. So far, I've calculated the meta-analytic correlation ...
0
votes
1answer
34 views

Analyzing website user search terms

I'm trying to group the popularity of various topics and categories on my website by looking at what my users are searching for. Working with a spreadsheet has proven extremely difficult. For example, ...
1
vote
2answers
50 views

practical problem when computing the probabilities of a normally distributed sample

I am trying to implement some paper, where I have an iterative scheme where I have to compute the probabilities from a univariate normal distribution as usual: The python code is: ...
0
votes
0answers
66 views

Numerical issues when using softmax function for probability values

I have a prediction function that outputs confidence values for a label in a classification task. The function outputs a vector $h_{\theta}(x) \in \mathbb{R}^L$. I have been trying to feed the output ...
0
votes
0answers
57 views

Julia set to replace R? [duplicate]

I'll consider myself a beginner R user, and browsing through the Web yesterday I read an article that said that Julia (new language) is set to replace R and SAS... Now my concern is wether to ...
2
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0answers
44 views

Is there a standard set of statistics to apply to benchmark data?

I'm writing a web application that takes benchmark data from our in-development video game. Here is a preview of one of the benchmarks: We intend to run and collect this data once per day or more. ...
3
votes
0answers
44 views

What significant problems/solutions have you experienced working with software engineers?

This question is probably at least applicable for those of you that work in a commercial setting. I am working in a rather general way on process improvements with regards to communicating (or not ...
0
votes
1answer
38 views

Is it possible to use entropy maximisation to get around collinearity in linear regression?

Say I have a linear regression problem with highly collinear predictors. Is it possible to use entropy maximisation rather than OLS to fit this model? If so, which (preferably Free) software ...
0
votes
3answers
35 views

Need time series visualization software with zoom [closed]

I am responsible for providing time series data to my co-workers monthly as line charts. The plots consist of two series: the actual data and a moving-average smoothed line. I am currently doing this ...
0
votes
0answers
26 views

In which languages can I estimate a VMA model?

In which languages/environments are there tools to estimate a VMA model of a given order? That is, given $q\in\mathbb{N}$ and a multivariate time series $y_t\in\mathbb{R}^d$, $t=1,\dots,T$, a function ...
0
votes
0answers
15 views

serial mediation with count data

It seems that, when you have count data, OLS-based mediation analysis models are not the right option to use. Poisson based strategies would be better. But I dont know about any software using poisson ...
0
votes
0answers
27 views

What software estimates hidden Markov models?

I am trying to estimate a hidden Markov model (HMM) for a research project. Suppose that I observe a sequence of emissions, but I do not know the sequence of states the model went through to generate ...
0
votes
0answers
74 views

Results from logit model using BIOGEME unexpected

I am using BIOGEME to estimate the discrete choice model (choice is made among four alternative routes). I am having hard time with modeling using BIOGEME, and expecting help on this. I have dataset ...
0
votes
0answers
53 views

Is eviews the only object oriented GUI based statistical package on the market?

I am trying to find a good and neat GUI statistical package for beginner, so far I have tried Stata, Gretl and Eviews. Only Eviews seem to have objects (models, graphics etc) stored together with ...
1
vote
2answers
58 views

Suggested software to compute seasonal arima model

My issue is really simple: I need to compute a seasonal arima model on traffic data (5 min frequency). The data exhibits daily seasonality (288 observations). This is causing me issues in computing ...
0
votes
0answers
36 views

1-tail Dunn's test in Statistica

I'm performing a comparison between 3 groups [Condition: J,N,P n=87] on a single parameter [k_value]. First, I used Kruskal-Wallin test and got significant results. Then, I used Dunn's test to conduct ...
0
votes
0answers
36 views

How to Conduct a Multi-Level (3 levels) SEM in R

I've been told that there isn't a way of conducting a multilevel (3 levels) SEM analysis in R. I then found the package xxM http://xxm.times.uh.edu/get-started/ while searching online for a solution. ...
1
vote
0answers
108 views

Median-computation (“grouped median”). Problem with gmedian-computation in SPSS

In my basic-statistics course I wanted to delve deeper into the problem of the (grouped) median-computation and did some computations using SPSS. The protocol seems to indicate either a different ...
2
votes
1answer
46 views

How to process Binomial-Binomial data on SPSS for hypothesis testing?

There are 2 groups of 100 pregnant women: the first are malnourished and the second are well-nourished. A COHORT research is being done on them to determine if malnutrition is a risk factor for low ...
0
votes
1answer
40 views

Choose software tool for basic analysis [closed]

(I am pretty novice in data analysis) So, I have a set of elements (~105). All elements splitted for some classes of disjoint sets. Actually, there are two systems of sets. ...
0
votes
0answers
2 views

Trying to replicate data analyses on AM software

I have downloaded a dataset from data.gov and need to run some correlations. It runs on AM software, and I have not been able to either export or tag any dependent variables. Please help.
2
votes
1answer
134 views

Constraints on the Coefficients of a Seasonal ARIMA Model (Possible Software Bug ITSM)

I am attempting to fit a seasonal ARIMA models using ITSM software. The following is the model. ARIMA$(1,1,0)\times(1,1,0)_{12}$: $\phi(B) \Phi(B^{12}) = (1-\phi B)(1-\Phi B^{12})=1-\Phi ...
3
votes
2answers
137 views

software library to compute KL divergence?

Are there any software libraries that compute KL divergences in closed form, that also give the derivatives of the KL divergence wrt the distributions' parameters? I'm using Julia, so it's ...
0
votes
0answers
24 views

Correlation Coefficient (r) on Minitab

I am analysing a relationship between two continuous interval variables. When I graphed the variables, I noticed two groups and suspected there was another variable at play so I graphed them again ...
1
vote
0answers
80 views

What are the computer related prerequisite to do cool stuff with data? [closed]

I am a mathematician, who has recently gotten interested in statistics and machine learning, and feel that the biggest gap I have to fill is the technological one. What are the different ways that ...
0
votes
0answers
18 views

Probabilistc Inference for Hybrid Models

I am looking for a library that can solve (calculate the MAP estimate) of the variables in a probable graphical model in which some variables are discrete and some are continuous. I understand that ...
0
votes
1answer
134 views

What statistical software does NOT provide for Classification and Regression models [closed]

Appended is a list (as far as I can tell) of statistical software that DOES provide for use of Classification and Regression Tree (CART) models. Some have the CART as a trivial case of things like ...
1
vote
1answer
141 views

What software could fit an alternative specific random intercept multinomial logit model?

I have a dataset of around 30,000 people where each chooses one of 4 items: A, B, C or D. People are nested within the 600 areas. I want to fit a multinomial logit model, where random intercepts are ...
0
votes
1answer
48 views

Better software for business forecasting? [duplicate]

I'd like to know what software provides better performance in business forecasting for thousands of SKU. Here the data is taken through databases. I know three alternatives: Autobox SAS Forecast ...
3
votes
2answers
103 views

Which multilevel software should I choose?

I have used packages in R thus far for MLM, but now I need to do MLM with complex survey data, and as I understand it, none of the MLM packages in R can cope with the complex weighting needed to ...
0
votes
0answers
161 views

Bimodal or Unimodal check using plot of Gaussian Kernel Density in R

I have a question on checking for bimodal distributions. When I try to use the Kernel based approach in R, ...
1
vote
0answers
36 views

How to analyze the effects of air pollution separately for the warm season and the cool season

In the model for main effect, we used the R code: ...
1
vote
0answers
17 views

Looking for a package to symbolically manipulate statistical expressions

I'm looking for a package that allows to manipulate statistical expressions symbolically, similar to how one can simplify, expand, factor, etc. with Matlab, Mathematica or SAGE. Using rules such as ...
0
votes
0answers
11 views

build systems for portable analyses

Does anyone have a good tool chain for packaging up, transferring, configuring and running an analysis? Bonus points if an analysis can be reproduced across platforms. There has been a lot of ...
0
votes
1answer
71 views

M statistic and software ProtoArray Prospector

I would like to reproduce the statistical result in this paper: http://www.ncbi.nlm.nih.gov/pubmed/24947363 They said "the M-statistic test in ProtoArray Prospector was applied to the normalized ...
19
votes
5answers
8k views

For plotting with R, should I learn ggplot2 or ggvis?

For plotting with R, should I learn ggplot2 or ggvis? I don't necessarily want to learn both if one of them is superior in any regard. Why R community keeps creating new packages with overlapping ...
1
vote
1answer
50 views

Recommended packages for numerical optimization with symbolic calculus

I'd like to train a model $\widehat{y}_i = F(x_i, \theta)$, by minimizing the sum of a loss function, $L(\widehat{y}_i, y_i, \theta)$. I'd like to input $\{x_i, y_i\}, F, L$ into a software package ...
1
vote
1answer
50 views

Missing data analysis software

Does any standard statistical software like R, SAS or SPSS have procedures or codes to analyze log-linear models for missing data in contingency tables using maximum likelihood estimation (or EM ...
0
votes
3answers
143 views

Why am I getting different results for my logistic regression when performed by different software?

My data is simple, my independant variable is continous from 0-1000 and the response is either a 1 or a 0. I'm performing a logistic regression to determine the 50% inflection point. When I put this ...
2
votes
0answers
117 views

Factor analysis with repeated measures

Multilevel factor analysis seems to be the technical term for factor analysis with repeated measures, judging from this abstract. To be precise, following Wikipedia's factor analysis notation, the ...
0
votes
0answers
34 views

Generating a dataset from mean, standard deviation, n and 95% CI

I have the output of a couple of Socprog models and I'd like to see if the results are statistically significant. Group A output: ...
3
votes
3answers
563 views

Tool for generating correlated data sets

Does anyone know of a tool that I can use to generate a set of data with known correlations (and to put the icing on the cake - output this in json,csv,txt or some common format)? I am working on ...
0
votes
0answers
658 views

Find linear SVM feature weights using libsvm

I'm trying to use linear SVM to do some feature selection. I'm using libsvm, but I cannot figure out how to find feature weights. The model file created looks something like this: ...
1
vote
1answer
91 views

Does free SPSS 16 actually exist? [closed]

My mother heard about free SPSS 16 and gave me the task of finding a safe download of it. However, I can't find any site (except torrents) that actually have it available, they all seem to use SPSS 16 ...
0
votes
0answers
109 views

Power analysis in meta-analysis: Compute the maximum significance needed by an additional sample for meta-analysis to reach genome-wide significance

I have an association study analysis (GWAS) that does not reach genome-wide significance (max p-value < 10E-5), and there is a potential additional sample (so with known N and known effect size/SE ...
3
votes
1answer
66 views

Methods for testing a Bayesian method's software implementation

I'm a frequentist but have been exploring Bayesian techniques lately. One thing that bothers me is that I'm never completely sure that I've implemented them correctly. To be specific, I'm not talking ...