Collates statistics while calculating term weight in an ESet. More...
#include <expandweight.h>
Collaboration diagram for Xapian::Internal::ExpandStats:
Public Member Functions | |
| ExpandStats (Xapian::doclength avlen_) | |
| Constructor for expansion schemes which do not require the "expand_k" parameter. More... | |
| ExpandStats (Xapian::doclength avlen_, double expand_k_) | |
| Constructor for expansion schemes which require the "expand_k" parameter. More... | |
| void | accumulate (size_t shard_index, Xapian::termcount wdf, Xapian::termcount doclen, Xapian::doccount subtf, Xapian::doccount subdbsize) |
| void | clear_stats () |
Public Attributes | |
| Xapian::doccount | dbsize |
| Size of the subset of a multidb to which the value in termfreq applies. More... | |
| Xapian::doccount | termfreq |
| Term frequency (for a multidb, may be for a subset of the databases). More... | |
| Xapian::termcount | rcollection_freq |
| The number of times the term occurs in the rset. More... | |
| Xapian::doccount | rtermfreq |
| The number of documents from the RSet indexed by the current term (r). More... | |
| double | multiplier |
| The multiplier to be used in TradWeight query expansion. More... | |
Private Attributes | |
| std::vector< bool > | dbs_seen |
| Which databases in a multidb are included in termfreq. More... | |
| Xapian::doclength | avlen |
| Average document length in the whole database. More... | |
| double | expand_k |
| The parameter k to be used for TradWeight query expansion. More... | |
Detailed Description
Collates statistics while calculating term weight in an ESet.
Definition at line 37 of file expandweight.h.
Constructor & Destructor Documentation
◆ ExpandStats() [1/2]
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inlineexplicit |
Constructor for expansion schemes which do not require the "expand_k" parameter.
Definition at line 65 of file expandweight.h.
◆ ExpandStats() [2/2]
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inline |
Constructor for expansion schemes which require the "expand_k" parameter.
Definition at line 71 of file expandweight.h.
Member Function Documentation
◆ accumulate()
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inline |
Definition at line 76 of file expandweight.h.
References rtermfreq.
Referenced by ChertTermList::accumulate_stats(), NetworkTermList::accumulate_stats(), GlassTermList::accumulate_stats(), and InMemoryTermList::accumulate_stats().
◆ clear_stats()
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inline |
Definition at line 102 of file expandweight.h.
Member Data Documentation
◆ avlen
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private |
Average document length in the whole database.
Definition at line 42 of file expandweight.h.
Referenced by Xapian::Internal::ExpandWeight::get_avlen().
◆ dbs_seen
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private |
Which databases in a multidb are included in termfreq.
Definition at line 39 of file expandweight.h.
◆ dbsize
| Xapian::doccount Xapian::Internal::ExpandStats::dbsize |
Size of the subset of a multidb to which the value in termfreq applies.
Definition at line 49 of file expandweight.h.
Referenced by Xapian::Internal::ExpandWeight::get_dbsize().
◆ expand_k
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private |
The parameter k to be used for TradWeight query expansion.
Definition at line 45 of file expandweight.h.
◆ multiplier
| double Xapian::Internal::ExpandStats::multiplier |
The multiplier to be used in TradWeight query expansion.
Definition at line 61 of file expandweight.h.
◆ rcollection_freq
| Xapian::termcount Xapian::Internal::ExpandStats::rcollection_freq |
The number of times the term occurs in the rset.
Definition at line 55 of file expandweight.h.
◆ rtermfreq
| Xapian::doccount Xapian::Internal::ExpandStats::rtermfreq |
The number of documents from the RSet indexed by the current term (r).
Definition at line 58 of file expandweight.h.
Referenced by accumulate().
◆ termfreq
| Xapian::doccount Xapian::Internal::ExpandStats::termfreq |
Term frequency (for a multidb, may be for a subset of the databases).
Definition at line 52 of file expandweight.h.
The documentation for this class was generated from the following file:
- expand/expandweight.h