codesimian
Class BayesNodePredictError

java.lang.Object
  extended by codesimian.CS
      extended by codesimian.DefaultCS
          extended by codesimian.BayesNodePredictError
All Implemented Interfaces:
CodeSimian, java.io.Serializable

public class BayesNodePredictError
extends DefaultCS

A heuristic that guesses the prediction-error of a "bayes-node" as defined in BayesNode.java, whose child nodes (in its param0) are also bayes-nodes. Returns the average prediction-error. Bayes-nodes return chances 0.0 to 1. The biggest possible prediction error is 1, and smallest is 0. Smaller error is better.

The bayes-node and its child nodes each have a HISTORY, all the same length. I replace those childs with values from their histories, and compare that parent's output against its history.

WARNING: Example: If all of some node's history values are in the small range .6 to .7, then it could simply predict .65 every time and be very accurate. If an other node's history ranges .1 to .9, and it always predicts with only .2 error, its more useful than the first node, but appears not to be because what its supposed to predict is harder. SOLUTION 1: Only compare the BayesNodeAccuracy of nodes that have the same history values (proposed replacements). SOLUTION 2: Compare different nodes, but scale their BayesNodeAccuracy to the difficulty of the problem.

Exec() puts the childs back, and returns the average prediction-error.

Exec() returns 1000 if error (and replaces param0 with an Err), else returns the average prediction error range 0 to 1.

See Also:
Serialized Form

Field Summary
 
Fields inherited from class codesimian.CS
DESCRIPTION, END, EXECPROXY, FUEL, HEAP, JAVACODE, MYFUEL, NAME, NEWINSTANCE, NULL, PARENT, PARSEPRIORITY, PREV, TESTER
 
Constructor Summary
BayesNodePredictError()
           
 
Method Summary
 double cost()
          cost() should be changed to return a float, and should be renamed to costToExecute()

cost of EXECUTING this CS, not including any CSs it executes recursively.
 java.lang.String description()
          a short description of this CS, shorter than the javadoc, but long enough to tell what the params are for.
 double DForProxy()
          D() and DForProxy() are the 2 most important functions in CS.
 java.lang.String keyword()
          For the CodeSimian language as a String.
CodeSimian language keyword, like "+" "*" "max" ">" etc.

Override this function if you want to specify a keyword other than how I derive them from the class name, like + for Add.

Some CSs might never be intended to be used in the language by their keyword.
The best example (4/05) is Num, because it is used in the language like "3.4" instead of "num()".
 
Methods inherited from class codesimian.DefaultCS
B, C, countP, decrementMyFuel, deleteP, F, fuel, getExec, getObject, heap, I, indexP, indexPName, insertB, insertC, insertD, insertF, insertI, insertJ, insertL, insertL, insertL1, insertP, insertS, insertZ, J, javaCode, LForProxy, LForProxy, minP, myFuel, name, newInstance, objectToCS, objectToCSArray, objectToCSArray, P, prevD, prevL, PType, S, setB, setC, setCountP, setD, setD, setExec, setF, setFuel, setI, setJ, setL, setL, setL, setL1, setMyFuel, setName, setObject, setP, setPrevExec, setS, setZ, start, toString, V, Z
 
Methods inherited from class codesimian.CS
addP, addP, addP, addP, addP, BForProxy, CForProxy, clone, D, deleteP, FForProxy, IForProxy, isIllusion, javaCode, JForProxy, L, L, L, L, L, maxD, maxP, minD, overwrites, parent, parsePriority, PB, PC, PD, PF, PI, PJ, PL, prevB, prevC, prevF, prevI, prevJ, prevS, prevZ, proxyOf, PS, PZ, reflect, reflect, setB, setC, setCost, setDescription, setF, setHeap, setI, setJ, setL, setL, setParent, setParsePriority, setProxyOf, setPType, setS, setTester, setZ, SForProxy, tester, VForProxy, voidReflect, ZForProxy
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

BayesNodePredictError

public BayesNodePredictError()
Method Detail

DForProxy

public double DForProxy()
Description copied from class: CS
D() and DForProxy() are the 2 most important functions in CS. They execute this CS. All other execute functions, by default, use DForProxy instead of reinventing-the-wheel for their own type.

For example, J() calls JForProxy() which calls DForProxy(). D() calls DForProxy() directly.

Execute this CS and cast to double. D() is the main EXECUTE function. D() uses DForProxy(). DForProxy() is the main action of every CS, the most important function. By default, all other primitive EXECUTE functions defer to D.
Functions that EXECUTE this CS: L(Class) L(int,Class,int) Z() B() C() S() I() J() F() D() V()

Specified by:
DForProxy in class DefaultCS

keyword

public java.lang.String keyword()
Description copied from class: DefaultCS
For the CodeSimian language as a String.
CodeSimian language keyword, like "+" "*" "max" ">" etc.

Override this function if you want to specify a keyword other than how I derive them from the class name, like + for Add.

Some CSs might never be intended to be used in the language by their keyword.
The best example (4/05) is Num, because it is used in the language like "3.4" instead of "num()".
Default: Returns class name, minus package name (and its dots), and change the first letter to lowercase.

For example, CS.MaxParams does not override keyword(), which returns "maxP".

Overrides:
keyword in class DefaultCS
See Also:
CS.parent(), CS.newInstance(), CS.name()

description

public java.lang.String description()
Description copied from class: CS
a short description of this CS, shorter than the javadoc, but long enough to tell what the params are for. Example use: in automatically generated webpages for CodeSimian. Example: "returns sum of all params" for Add.

Overrides:
description in class DefaultCS

cost

public double cost()
Description copied from class: CS
cost() should be changed to return a float, and should be renamed to costToExecute()

cost of EXECUTING this CS, not including any CSs it executes recursively. The INTERNAL cost.

One unit of myFuel() costs cost() units of fuel(). Beware of CSs that counterfeit fuel.

Returns 1 by default.

Overrides:
cost in class CS