Qualitative fit testing

Qualitative research: does it fit in economics?

This article discusses the role that case studies, built upon open-ended interviews with economic actors, can play in economic research. It argues that such material cannot be treated directly as empirical evidence. Rather it provides a way of building theory, by offering a critical perspective on the standard theoretical assumptions of the discipline and offering alternatives with which to con...

Exploratory Testing: One Size Doesn't Fit All

Exploratory testing (ET) is a powerful and efficient way of testing software by integrating design, execution, and analysis of tests during a testing session. ET is often contrasted with scripted testing, and seen as a choice between black and white. We pose that there are different levels of exploratory testing from fully exploratory to fully scripted and propose a scale for the degree of expl...

Testing Guts : Where Do Monopoles Fit ?

Goodness-of-fit testing under long memory

In this talk we shall discuss the problem of fitting a distribution function to the marginal distribution of a long memory process. It is observed that unlike in the i.i.d. set up, classical tests based on empirical process are relatively easy to implement. More importantly, we discuss fitting the marginal distribution of the error process in location, scale and linear regression models. An int...

Bayes Factors for Goodness of Fit Testing

We propose the use of the generalized fractional Bayes factor for testing fit in multinomial models. This is a non-asymptotic method that can be used to quantify the evidence for or against a sub-model. We give expressions for the generalized fractional Bayes factor and we study its properties. In particular, we show that the generalized fractional Bayes factor has better properties than the fr...