Linked Questions

9
votes
1answer
2k views

Logistic regression output and probability [duplicate]

What is the interpretation of the number that is the output of the logistic regression function? The logistic function $$f(\vec{x}) = \frac{1}{1+e^{-g(\vec{x})}}$$ (where $g$ is a linear function)...
2
votes
1answer
2k views

Probit or Logit in Generalized Linear Model [duplicate]

I'm trying to apply GLMs on a dataset in which dependent variable Y is dichotomous. I applied either logit and probit models, and probit fitted better than logit model. How do I justify the choice of ...
0
votes
1answer
616 views

What exactly are some fundamental differences between probit model and logistic regression [duplicate]

It seems that both these refer to cases where the regressed (dependent) variable can only take certain values, as opposed to a linear regression. So what is the difference between probit and logistic ...
1
vote
0answers
367 views

Generalized linear model v linear model [duplicate]

Bioinformatician here. I'm wondering what the main differences between both of these approaches is. I just want to clarify that a formal mathematical treatment would likely be too much for me. From ...
3
votes
0answers
345 views

What is the meaning of the different links in the binomial family of a GLM model in R? [duplicate]

In the help of the glm command in R, I read the binomial family the links logit, probit, cauchit, (corresponding to logistic, normal and Cauchy CDFs respectively) log and cloglog (...
1
vote
0answers
313 views

Logit versus Probit [duplicate]

Possible Duplicate: Difference between logit and probit models I have data in which the response variable is binary. So, I fitted logit and probit models and obtained the results. How can I ...
1
vote
0answers
237 views

Meaning of link functions (GLM) [duplicate]

I am performing ordinal regression on several datasets, I have 5 ordered response categories and only one explanatory variable X. For each dataset I run the analysis 3 times, each time using a ...
0
votes
0answers
93 views

Using a GLM with the identity link [duplicate]

If I use a GLM with the identity link, is there any difference to a linear model? For example, if I use a Gamma GLM with identity link and an Inverse Gaussian GLM with identity link, what is the ...
0
votes
0answers
54 views

Comparison between Logit and Probit models [duplicate]

I'm new in econometrics and I'm working in a probabilistic model and using Stata for this, but when I was going to compare the Logit and Probit I did not know which one win in this case, because there ...
0
votes
0answers
39 views

Likelihood values from Sigmoid [duplicate]

Repost of Mathemetics StackExchange question. There are multiple doubts of mine associated around this theme: In MLE, we try to find the PDF parameters ($\theta$) which maximise the likelihood of the ...
0
votes
0answers
35 views

Logit vs probit model [duplicate]

I am planning to do a study that uses binary dependent variable, such as a person is either in the labour force or not in the labour force. The function will have independent variables, for example ...
362
votes
9answers
699k views

What is the difference between fixed effect, random effect and mixed effect models?

In simple terms, how would you explain (perhaps with simple examples) the difference between fixed effect, random effect and mixed effect models?
113
votes
5answers
42k views

Comprehensive list of activation functions in neural networks with pros/cons

Are there any reference document(s) that give a comprehensive list of activation functions in neural networks along with their pros/cons (and ideally some pointers to publications where they were ...
135
votes
3answers
270k views

What is the difference between linear regression and logistic regression?

What is the difference between linear regression and logistic regression? When would you use each?
86
votes
4answers
50k views

What is the difference between a "link function" and a "canonical link function" for GLM

What's the difference between terms 'link function' and 'canonical link function'? Also, are there any (theoretical) advantages of using one over the other? For example, a binary response variable ...

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