MyMediaLite
3.11
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Class for storing and computing 'bi-directional' conditional probabilities More...
Public Member Functions | |
void | AddEntity (int entity_id) |
Add an entity to the ICorrelationMatrix by growing it to the requested size. More... | |
BidirectionalConditionalProbability (int num_entities, float alpha) | |
Creates an object of type BidirectionalConditionalProbability More... | |
float | ComputeCorrelation (ICollection< int > vector_i, ICollection< int > vector_j) |
Computes the correlation of two binary vectors More... | |
void | ComputeCorrelations (IBooleanMatrix entity_data) |
Compute the correlations from an implicit feedback, positive-only dataset More... | |
IMatrix< T > | CreateMatrix (int num_rows, int num_columns) |
Create a matrix with a given number of rows and columns More... | |
IMatrix< T > | CreateMatrix (int num_rows, int num_columns) |
Create a matrix with a given number of rows and columns More... | |
virtual IMatrix< T > | CreateMatrix (int num_rows, int num_columns) |
Create a matrix with a given number of rows and columns More... | |
void | Resize (int num_rows, int num_cols) |
Grows or shrinks the matrix to the requested size, if necessary More... | |
void | Resize (int num_rows, int num_cols) |
Grows or shrinks the matrix to the requested size, if necessary More... | |
void | Resize (int num_rows) |
Resize to the given size More... | |
void | Resize (int num_rows, int num_cols) |
Grows or shrinks the matrix to the requested size, if necessary More... | |
IMatrix< T > | Transpose () |
Get the transpose of the matrix, i.e. a matrix where rows and columns are interchanged More... | |
IMatrix< T > | Transpose () |
Get the transpose of the matrix, i.e. a matrix where rows and columns are interchanged More... | |
virtual IMatrix< T > | Transpose () |
Get the transpose of the matrix, i.e. a matrix where rows and columns are interchanged More... | |
void | Write (StreamWriter writer) |
Write out the correlations to a StreamWriter More... | |
Protected Member Functions | |
override float | ComputeCorrelationFromOverlap (float overlap, float count_x, float count_y) |
Protected Attributes | |
int | num_entities |
Number of entities, e.g. users or items More... | |
Properties | |
override bool | IsSymmetric [get] |
returns false | |
virtual IList< Tuple< int, int > > | NonEmptyEntryIDs [get] |
The row and column IDs of non-empty entries in the matrix More... | |
int | NumberOfColumns [get] |
The number of columns of the matrix More... | |
int | NumberOfColumns [get] |
The number of columns of the matrix More... | |
int | NumberOfColumns [get] |
virtual int | NumberOfNonEmptyEntries [get] |
The number of non-empty entries in the matrix More... | |
int | NumberOfRows [get] |
The number of rows of the matrix More... | |
int | NumberOfRows [get] |
The number of rows of the matrix More... | |
int | NumberOfRows [get] |
int | NumEntities [get] |
T | this[int x, int y] [get, set] |
The value at (i,j) More... | |
T | this[int x, int y] [get, set] |
The value at (i,j) More... | |
virtual T | this[int x, int y] [get, set] |
Access the elements of the sparse matrix More... | |
Dictionary< int, T > | this[int x] [get] |
Get a row of the matrix More... | |
bool | Weighted [get, set] |
Class for storing and computing 'bi-directional' conditional probabilities
TODO LIT
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inline |
Creates an object of type BidirectionalConditionalProbability
num_entities | the number of entities |
alpha | alpha parameter |
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inlineinherited |
Add an entity to the ICorrelationMatrix by growing it to the requested size.
Note that you still have to correctly compute and set the entity's correlation values
entity_id | the numerical ID of the entity |
Implements ICorrelationMatrix.
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inlineinherited |
Computes the correlation of two binary vectors
vector_i | the first vector |
vector_j | the second vector |
Implements IBinaryDataCorrelationMatrix.
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inlineinherited |
Compute the correlations from an implicit feedback, positive-only dataset
entity_data | the implicit feedback set, rows contain the entities to correlate |
Implements IBinaryDataCorrelationMatrix.
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inherited |
Create a matrix with a given number of rows and columns
num_rows | the number of rows |
num_columns | the number of columns |
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inherited |
Create a matrix with a given number of rows and columns
num_rows | the number of rows |
num_columns | the number of columns |
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inlinevirtualinherited |
Create a matrix with a given number of rows and columns
num_rows | the number of rows |
num_columns | the number of columns |
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inherited |
Grows or shrinks the matrix to the requested size, if necessary
The new entries are filled with zeros. Obsolete entries are removed.
num_rows | the number of rows |
num_cols | the number of columns |
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inherited |
Grows or shrinks the matrix to the requested size, if necessary
The new entries are filled with zeros. Obsolete entries are removed.
num_rows | the number of rows |
num_cols | the number of columns |
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inlineinherited |
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inlineinherited |
Grows or shrinks the matrix to the requested size, if necessary
The new entries are filled with zeros. Obsolete entries are removed.
num_rows | the number of rows |
num_cols | the number of columns |
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inherited |
Get the transpose of the matrix, i.e. a matrix where rows and columns are interchanged
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inherited |
Get the transpose of the matrix, i.e. a matrix where rows and columns are interchanged
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inlinevirtualinherited |
Get the transpose of the matrix, i.e. a matrix where rows and columns are interchanged
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inlineinherited |
Write out the correlations to a StreamWriter
writer | A StreamWriter |
Implements ICorrelationMatrix.
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protectedinherited |
Number of entities, e.g. users or items
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getinherited |
The row and column IDs of non-empty entries in the matrix
The row and column IDs of non-empty entries in the matrix
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getinherited |
The number of columns of the matrix
The number of columns of the matrix
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getinherited |
The number of columns of the matrix
The number of columns of the matrix
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getinherited |
The number of non-empty entries in the matrix
The number of non-empty entries in the matrix
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getinherited |
The number of rows of the matrix
The number of rows of the matrix
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getinherited |
The number of rows of the matrix
The number of rows of the matrix
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getsetinherited |
The value at (i,j)
The value at (i,j)
x | the row ID |
y | the column ID |
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getsetinherited |
The value at (i,j)
The value at (i,j)
x | the row ID |
y | the column ID |
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getsetinherited |
Access the elements of the sparse matrix
x | the row ID |
y | the column ID |
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getinherited |
Get a row of the matrix
x | the row ID |