AbstractFrequentItemsetAlgorithm (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

java.lang.Object
- elki.itemsetmining.AbstractFrequentItemsetAlgorithm

All Implemented Interfaces:

elki.Algorithm

Direct Known Subclasses:

APRIORI, Eclat, FPGrowth
```
public abstract class AbstractFrequentItemsetAlgorithm
extends java.lang.Object
implements elki.Algorithm
```
Abstract base class for frequent itemset mining.

Since:

0.7.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class AbstractFrequentItemsetAlgorithm.Par
Parameterization class.
- Nested classes/interfaces inherited from interface elki.Algorithm
  elki.Algorithm.Utils

Field Summary

Fields
Modifier and Type	Field	Description
`protected int`	`maxlength`	Parameter for minimum and maximum length.
`protected int`	`minlength`	Parameter for minimum and maximum length.
`private double`	`minsupp`	Minimum support.

Constructor Summary

Constructors
Constructor	Description
`AbstractFrequentItemsetAlgorithm(double minsupp)`	Constructor.
`AbstractFrequentItemsetAlgorithm(double minsupp, int minlength, int maxlength)`	Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`FrequentItemsetsResult`	`autorun(elki.database.Database database)`
`int`	`getMinimumSupport(int size)`	Get the minimum support for a given data set size.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface elki.Algorithm
getInputTypeRestriction

- Field Detail
  - minsupp
```
private double minsupp
```
    Minimum support.
  - minlength
```
protected int minlength
```
    Parameter for minimum and maximum length.
  - maxlength
```
protected int maxlength
```
    Parameter for minimum and maximum length.
- Constructor Detail
  - AbstractFrequentItemsetAlgorithm
```
public AbstractFrequentItemsetAlgorithm(double minsupp,
                                        int minlength,
                                        int maxlength)
```
    Constructor.
    
    Parameters:
    
    minsupp - Minimum support
    
    minlength - Minimum length
    
    maxlength - Maximum length
  - AbstractFrequentItemsetAlgorithm
```
public AbstractFrequentItemsetAlgorithm(double minsupp)
```
    Constructor.
    
    Parameters:
    
    minsupp - Minimum support
- Method Detail
  - autorun
```
public FrequentItemsetsResult autorun(elki.database.Database database)
```
    Specified by:
    
    autorun in interface elki.Algorithm
  - getMinimumSupport
```
public int getMinimumSupport(int size)
```
    Get the minimum support for a given data set size. Converts relative minimum support to absolute minimum support.
    
    Parameters:
    
    size - Data set size
    
    Returns:
    
    Minimum support