Abstract
In this chapter, we provide an overview of various approaches for performing inference on cognitive models. Namely, we discuss the connections between approximate least squares, maximum likelihood estimate, and Bayesian statistics. We then use the comparisons across these methods to motivate the concept of approximate Bayesian computation. We close with an overview and plan for the remainder of the book.
What I cannot create, I do not understand.
Richard Feynman
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Notes
- 1.
We will use the notational convention that a variable name without subscripts such as y or x may be either vector or scalar valued; context should make clear which. If a variable is subscripted, such as y i or x i , it represents either an element of a vector or a scalar.
- 2.
Don’t confuse the probability (or density) function f Y (y | θ) with the model structure f(x, θ). The predictions of the model, described by f(x, θ) are not necessarily the same as the probability of the data given by f Y (y | θ), though they were the same for the high-threshold model above. For the simple regression model, however, f(x, {m, b}) = mx + b, while most applications of regression state that y is normally distributed with mean mx + b and some standard deviation σ. In this case, f Y (y | x, m, b, σ) is the normal density function that sketches out the bell curve.
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Palestro, J.J., Sederberg, P.B., Osth, A.F., Zandt, T.V., Turner, B.M. (2018). Motivation. In: Likelihood-Free Methods for Cognitive Science. Computational Approaches to Cognition and Perception. Springer, Cham. https://doi.org/10.1007/978-3-319-72425-6_1
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DOI: https://doi.org/10.1007/978-3-319-72425-6_1
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