Faceted Classification

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Faceted Classification

• INFO 430

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Say you want to

• Choose a dog
• Choose a class to take

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Facets

• Dog-buying facets
• Course-choosing facets

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Examples
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• Faceted classification to support advanced
  search
• Amazon example
• Faceted classification to support browsing
• Epicurious example

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More examples

• Getty Images
• Flamenco
• Relation Browser

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Implementation
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Implementation

• Facets are metadata elements

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Implementation

• Instance

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Implementation

• Rendering

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Implementation

• Transform

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Tool

• ltxslvalue-of select "count(ltxpathgt)" /gt

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Implementation

• Link to transform

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Summary of faceted classification

• Used for
• Advanced search
• Browse (reveals the contents/scope of a
  collection of items)

• Implementation
• Facets are metadata attributes or children
• Handy count function

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BREAK
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Review access structures

• Hierarchy (tree structure)
• Index (pointer structure)
• Associations (pair structure)
• Sequences (linear structure)

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Review of implementation strategies How do we
render these various access structures?
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Hierarchies easy when it matches the primary
hierarchy

•  
• ltxsltemplate match"/"gt
• ltxslfor-each select"/kBase/sources/source"gt
• ltxslvalue-of select"title"/gt
• ltxslapply-templates select"section"/gt
• lt/xslfor-eachgt
• lt/xsltemplategt
•  
• ltxsltemplate match"section"gt
• ltxslvalue-of select"title"/gt
• ltxslif test"section"gt
• ltxslapply-templates select"section"/gt
• lt/xslifgt
• lt/xsltemplategt

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Keywords embedded in the body

• ltxsltemplate match"/"gt
• ltxslfor-each select"//k"gt
• ltxslsort select"." data-type"text"
  case-order"upper-first" order"ascending"/gt
• lta href"default.aspx?key.ampclientXslclien
  tKeyampid_at_id"gt
• ltxslvalue-of select"."/gt
• lt/agt
• lt/xslfor-eachgt
• lt/xsltemplategt

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Associations paired relationships embedded in
the body
ltxslfor-each select"//xref"gt ltxslvariable
name"parentId"gt ltxslvalue-of
select"_at_parentId"/gt lt/xslvariablegt Associat
ion is in section ltxslvalue-of
select"//section_at_idparentId/title"/gt lt/pgt
lttable border"0"gt lttrgt lttd
class"body"gtIdlt/tdgt lttd class"body"gt
ltxslvalue-of select"_at_id"/gt ltxslvalue
-of select"_at_type"/gt lttd
class"body"gtReferent (destination)lt/tdgt lttd
class"body"gt ltxslvalue-of
select"xrefText/referent"/gt ltxslapply-
templates select"."/gt lt/xslfor-eachgt
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Sequences linear path through selected sections
embeeded in the body
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Overall Summary
Faceted Classification Access Structures Hierarc
hy Index Association Sequence