## Generated by Codox

# Propeller 0.3.2

# propeller.problems.PSB2.spin-words

SPIN WORDS from PSB2

Given a string of one or more words (separated by spaces), reverse all of the words that are five or more letters long and return the resulting string.

Source: https://arxiv.org/pdf/2106.06086.pdf

### -main

`(-main & args)`

Runs the top-level genetic programming function, giving it a map of arguments with defaults that can be overridden from the command line or through a passed map.

### error-function

`(error-function argmap data individual)`

Finds the behaviors and errors of an individual: Error is 0 if the value and the program’s selected behavior match, or 1 if they differ, or 1000000 if no behavior is produced. The behavior is here defined as the final top item on the STRING stack.

### instructions

Stack-specific instructions, input instructions, close, and constants

### random-char

`(random-char)`

Generates random character

### random-input

`(random-input len)`

Makes a Spin Words input of length len, which is just a string of words, where the words that are length 5 or greater are reversed

### train-and-test-data

Data taken from https://zenodo.org/record/5084812

### word-generator

`(word-generator)`

Random word generator for ERC from https://github.com/thelmuth/Clojush/blob/psb2/src/clojush/problems/psb2/spin_words.clj