sliminality

Structural inheritance

If you have a bunch of structs with common properties or functions (in the English sense, not the CS sense), it makes sense to define a parent type (or base type) encoding those common properties and functions, and have other types inherit those properties and functions from the parent.

If type A inherits from type B, then A is a subtype (or child type) of B. A subtype is a "more specific" version of its parent type.

Defining a subtype

Here is the syntax for declaring a subtype:

sliminality

pdiffs

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sliminality

Hidden Markov Models

sliminality

Parsing

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sliminality

EM Examples

sliminality

Expectation Maximization

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; (begin
;   <FunctionCall#1>
;   <FunctionCall#2>
;   ...
;   <ReturnFunctionCall>)
; ; executes a sequence of function calls, one at a time
; ; returns the value of the last one


; vend/outside-stock : number -> string or number

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; NOTE: This particular week's examples are much easier to read in DrRacket,
; since they make heavy use of the comment box. Would recommend downloading
; the .rkt files off the website and viewing them on your own computer.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


;;;;;;;;;;;;;;;;;;;;;;;;;;
; how cons works
;;;;;;;;;;;;;;;;;;;;;;;;;;

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; Conditionals

; (if <this>  ; boolean
;     <then-this>
;     <else-this>)


; (if (and (> x a)
;          (< x b))
;     "x in range"

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(define-struct person (name age))

(define CONTACTS (list (make-person "Sarah" 20)
                       (make-person "Ian" 99)
                       (make-person "Bob" 14)
                       (make-person "Joe" 15)))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; map example
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;