I am seeing unexpected results when I modify my moreLikeThisConfiguration
settings.
Each of the settings seems intuitive, but as I make modifications to these
settings, the behavior surprises me.
If I set minTermFrequency to 2, I get some reasonable related items as well
as many irrelevant results.
If I set minTermFrequency to 3, I get no related items for most of my use
cases. I have counted the keywords in my title, subject, etc and I believe
more results should be returned. If the system was behaving as I expect, I
would like to set this value even higher.
Has anyone else experienced this issue? Can you recommend a solution?
Thanks, Terry
<property name="moreLikeThisConfiguration">
<bean
class="org.dspace.discovery.configuration.DiscoveryMoreLikeThisConfiguration">
<!--When altering this list also alter the
"xmlui.Discovery.RelatedItems.help" key as it describes
the metadata fields below-->
<property name="similarityMetadataFields">
<list>
<value>dc.title</value>
<value>dc.contributor.author</value>
<value>dc.creator</value>
<value>dc.subject</value>
</list>
</property>
<!--The minimum number of matching terms across the
metadata fields above before an item is found as related -->
<property name="minTermFrequency" value="2"/>
<!--The maximum number of related items displayed-->
<property name="max" value="3"/>
<!--The minimum word length below which words will be
ignored-->
<property name="minWordLength" value="4"/>
</bean>
</property>
--
Terry Brady
Applications Programmer Analyst
Lauinger Information Technology
202-687-7053
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