public class OPICScoringFilter extends Object implements ScoringFilter
X_POINT_ID
Constructor and Description |
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OPICScoringFilter() |
Modifier and Type | Method and Description |
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CrawlDatum |
distributeScoreToOutlinks(Text fromUrl,
ParseData parseData,
Collection<Map.Entry<Text,CrawlDatum>> targets,
CrawlDatum adjust,
int allCount)
Get a float value from Fetcher.SCORE_KEY, divide it by the number of
outlinks and apply.
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float |
generatorSortValue(Text url,
CrawlDatum datum,
float initSort)
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Configuration |
getConf() |
float |
indexerScore(Text url,
NutchDocument doc,
CrawlDatum dbDatum,
CrawlDatum fetchDatum,
Parse parse,
Inlinks inlinks,
float initScore)
Dampen the boost value by scorePower.
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void |
initialScore(Text url,
CrawlDatum datum)
Set to 0.0f (unknown value) - inlink contributions will bring it to a
correct level.
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void |
injectedScore(Text url,
CrawlDatum datum)
Set an initial score for newly injected pages.
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void |
passScoreAfterParsing(Text url,
Content content,
Parse parse)
Copy the value from Content metadata under Fetcher.SCORE_KEY to parseData.
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void |
passScoreBeforeParsing(Text url,
CrawlDatum datum,
Content content)
Store a float value of CrawlDatum.getScore() under Fetcher.SCORE_KEY.
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void |
setConf(Configuration conf) |
void |
updateDbScore(Text url,
CrawlDatum old,
CrawlDatum datum,
List<CrawlDatum> inlinked)
Increase the score by a sum of inlinked scores.
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
orphanedScore
public Configuration getConf()
getConf
in interface Configurable
public void setConf(Configuration conf)
setConf
in interface Configurable
public void injectedScore(Text url, CrawlDatum datum) throws ScoringFilterException
ScoringFilter
injectedScore
in interface ScoringFilter
url
- url of the pagedatum
- new datum. Filters will modify it in-place.ScoringFilterException
public void initialScore(Text url, CrawlDatum datum) throws ScoringFilterException
initialScore
in interface ScoringFilter
url
- url of the pagedatum
- new datum. Filters will modify it in-place.ScoringFilterException
public float generatorSortValue(Text url, CrawlDatum datum, float initSort) throws ScoringFilterException
generatorSortValue
in interface ScoringFilter
url
- url of the pagedatum
- page's datum, should not be modifiedinitSort
- initial sort value, or a value from previous filters in chainScoringFilterException
public void updateDbScore(Text url, CrawlDatum old, CrawlDatum datum, List<CrawlDatum> inlinked) throws ScoringFilterException
updateDbScore
in interface ScoringFilter
url
- url of the pageold
- original datum, with original score. May be null if this is a
newly discovered page. If not null, filters should use score
values from this parameter as the starting values - the
datum
parameter may contain values that are no longer
valid, if other updates occurred between generation and this
update.datum
- the new datum, with the original score saved at the time when
fetchlist was generated. Filters should update this in-place, and
it will be saved in the crawldb.inlinked
- (partial) list of CrawlDatum-s (with their scores) from links
pointing to this page, found in the current update batch.ScoringFilterException
public void passScoreBeforeParsing(Text url, CrawlDatum datum, Content content)
passScoreBeforeParsing
in interface ScoringFilter
url
- url of the pagedatum
- source datum. NOTE: modifications to this value are not persisted.content
- instance of content. Implementations may modify this in-place,
primarily by setting some metadata properties.public void passScoreAfterParsing(Text url, Content content, Parse parse)
passScoreAfterParsing
in interface ScoringFilter
url
- page urlcontent
- original content. NOTE: modifications to this value are not
persisted.parse
- target instance to copy the score information to. Implementations
may modify this in-place, primarily by setting some metadata
properties.public CrawlDatum distributeScoreToOutlinks(Text fromUrl, ParseData parseData, Collection<Map.Entry<Text,CrawlDatum>> targets, CrawlDatum adjust, int allCount) throws ScoringFilterException
distributeScoreToOutlinks
in interface ScoringFilter
fromUrl
- url of the source pageparseData
- ParseData instance, which stores relevant score value(s) in its
metadata. NOTE: filters may modify this in-place, all changes will
be persisted.targets
- <url, CrawlDatum> pairs. NOTE: filters can modify this
in-place, all changes will be persisted.adjust
- a CrawlDatum instance, initially null, which implementations may
use to pass adjustment values to the original CrawlDatum. When
creating this instance, set its status to
CrawlDatum.STATUS_LINKED
.allCount
- number of all collected outlinks from the source pageCrawlDatum.STATUS_LINKED
, which contains
adjustments to be applied to the original CrawlDatum score(s) and
metadata. This can be null if not needed.ScoringFilterException
public float indexerScore(Text url, NutchDocument doc, CrawlDatum dbDatum, CrawlDatum fetchDatum, Parse parse, Inlinks inlinks, float initScore) throws ScoringFilterException
indexerScore
in interface ScoringFilter
url
- url of the pagedoc
- indexed document. NOTE: this already contains all information
collected by indexing filters. Implementations may modify this
instance, in order to store/remove some information.dbDatum
- current page from CrawlDb. NOTE:
fetchDatum
- datum from FetcherOutput (containing among others the fetching
status)parse
- parsing result. NOTE: changes made to this instance are not
persisted.inlinks
- current inlinks from LinkDb. NOTE: changes made to this instance
are not persisted.initScore
- initial boost value for the indexed document.ScoringFilterException
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