xapian-core
1.5.0
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Class to represent cluster centroids in the vector space. More...
Public Member Functions | |
Centroid () | |
Default constructor. | |
Centroid (const Point &point) | |
Constructor with Point argument. More... | |
void | divide (double cluster_size) |
Divide the weight of terms in the centroid by 'size' and recalculate the magnitude. More... | |
void | clear () |
Clear the terms and corresponding values of the centroid. | |
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PointType () | |
Default constructor. | |
TermIterator | termlist_begin () const |
Return a TermIterator to the beginning of the termlist. | |
TermIterator | termlist_end () const noexcept |
Return a TermIterator to the end of the termlist. | |
bool | contains (const std::string &term) const |
Validate whether a certain term exists in the termlist or not by performing a lookup operation in the existing values. More... | |
double | get_weight (const std::string &term) const |
Return the TF-IDF weight associated with a certain term. More... | |
void | add_weight (const std::string &term, double weight) |
Add the weight 'weight' to the mapping of a term. More... | |
double | get_magnitude () const |
Return the pre-computed squared magnitude. | |
Xapian::termcount | termlist_size () const |
Return the size of the termlist. | |
PointType * | release () |
Start reference counting this object. More... | |
const PointType * | release () const |
Start reference counting this object. More... | |
Additional Inherited Members | |
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void | set_weight (const std::string &term, double weight) |
Set the weight 'weight' to the mapping of a term. More... | |
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std::unordered_map< std::string, double > | weights |
Implement a map to store the terms within a document and their pre-computed TF-IDF weights. | |
double | magnitude |
Store the squared magnitude of the PointType. | |
Class to represent cluster centroids in the vector space.
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explicit |
void Xapian::Centroid::divide | ( | double | cluster_size | ) |
Divide the weight of terms in the centroid by 'size' and recalculate the magnitude.
cluster_size | Value by which Centroid document vector is divided |