CoOccurrenceFrequencyMatrix

All Known Implementing Classes:

BaseCoOccurrenceFrequencyMatrix, MemoryCoOccurrenceFrequencyMatrix
```
public interface CoOccurrenceFrequencyMatrix
```
An interface for a co-occurrence frequency matrix. Also provides access to some statistical data. This class is not a pure data type for it also demands a method computeStatistics() which takes the matrix coefficients and computes mean, standard deviation and other properties from it.

Author:

Marco Schmidt

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`clear()`	Sets all frequency values in this matrix to `0.0`.
`void`	`computeStatistics()`	Computes mean, standard deviation and the sum of those two so that these values can be queried by the appropriate get methods.
`int`	`getDimension()`	Returns the dimension of this matrix.
`double`	`getMean(int index)`	Returns the mean for all pairs (index, i), with i running from 0 to `getDimension()` - 1.
`double`	`getScofMean()`	Returns the sum of mean and standard deviation for all pairs (index, x), with x running from 0 to getDimension() - 1.
`double`	`getScofStddev()`	Returns the standard deviation for all pairs (i, i), with i running from 0 to getDimension() - 1.
`double`	`getScofSum()`
`double`	`getStddev(int index)`	Returns the standard deviation of the values getValue(index, i) with i running from 0 to `getDimension()` - 1.
`double`	`getValue(int i)`	Returns the value for the self co-occurrence frequency of i (i being from 0 to `getDimension()` - 1).
`double`	`getValue(int i, int j)`
`void`	`setValue(int i, int j, double newValue)`

- Method Detail
  - clear
```
void clear()
```
    Sets all frequency values in this matrix to 0.0.
  - computeStatistics
```
void computeStatistics()
```
    Computes mean, standard deviation and the sum of those two so that these values can be queried by the appropriate get methods.
  - getScofMean
```
double getScofMean()
```
    Returns the sum of mean and standard deviation for all pairs (index, x), with x running from 0 to getDimension() - 1. The result is equal to getMean(int) + getStddev(int)
  - getMean
```
double getMean(int index)
```
    Returns the mean for all pairs (index, i), with i running from 0 to getDimension() - 1.
  - getStddev
```
double getStddev(int index)
```
    Returns the standard deviation of the values getValue(index, i) with i running from 0 to getDimension() - 1.
    
    Parameters:
    
    index - first argument to all calls of getValue used to determine the standard deviation
  - getScofStddev
```
double getScofStddev()
```
    Returns the standard deviation for all pairs (i, i), with i running from 0 to getDimension() - 1.
    
    Returns:
    
    standard deviation for pairs
  - getScofSum
```
double getScofSum()
```
  - getDimension
```
int getDimension()
```
    Returns the dimension of this matrix.
  - getValue
```
double getValue(int i)
```
    Returns the value for the self co-occurrence frequency of i (i being from 0 to getDimension() - 1). The result is the same as a call to getValue(i, i).
    
    Parameters:
    
    i - index into the matrix, must be larger than or equal to 0 and smaller than getDimension()
  - getValue
```
double getValue(int i,
                int j)
```
  - setValue
```
void setValue(int i,
              int j,
              double newValue)
```

Interface CoOccurrenceFrequencyMatrix

Method Summary

Method Detail

clear

computeStatistics

getScofMean

getMean

getStddev

getScofStddev

getScofSum

getDimension

getValue

getValue

setValue