Title Fields Indexing and Display

This includes titles of the work itself and other kinds of titles which may be searched for, such as series titles.

Some goals of title indexing:

1. Display title, subtitles, related and additional titles (e.g. uniform title, series title)
2. Search an aggregation of titles (e.g. search covers title, subtitle, series title, uniform title, etc.) Some decisions to be made here include whether to make related titles part of the search or not.

Title fields

marc field	description
245	main title
130 / 240	uniform title (a standardized form of the title with different intensities)
210	abbreviated title
222	key title
242	translation of title by cataloging agency
243	collective uniform title
246	sub/alternate titles
247	previous titles
490a	the title of a series.
440a	deprecated same as 490a. (We still have a lot of these, though, so if we index 490, we should index 440.)
505t	formatted contents note title
740	added entry - uncontrolled/alternate title
76x-78x subfield st	linking entry fields - uniform title and title
790-798	local added entry - personal name / corporate name / meeting name / uniform title
793a	collection - this is keyword indexed already via previous row, but index for display as well

Title Search

• Main Title
  • 245a unstemmed - title_unstem_search first part of title is used for exact matching
  • 245ab unstemmed - title_245ab_unstem_search
  • 245a - title_tsim
  • 245ab - title_245ab_tsim title/subtitle has a lower boost than title_tsim.
• Additional Titles
  • title_addl_unstem_search
  • title_addl_tsim

    245abnps
    130#{ATOZ}
    240abcdefgklmnopqrs
    210ab
    222ab
    242abnp
    243abcdefgklmnopqrs
    246abcdefgnp
    247abcdefgnp
    

• Added Entry Titles
  • title_added_entry_tsim

    730abcdefgklmnopqrst
    740anp
    

• Series Title
  • 440anpv:490av - series_title_tsim

Title Fields for Keyword Search

• Main Title
  • 245ab - title_245ab_tsim only
• Additional Titles
  • title_addl_unstem_search
  • title_addl_tsim

    245abnps
    130#{ATOZ}
    240abcdefgklmnopqrs
    210ab
    222ab
    242abnp
    243abcdefgklmnopqrs
    246abcdefgnp
    247abcdefgnp
    

• Related Titles
  • title_related_tsim

    505t
    730adfgklmnoprst
    740anp
    760st
    762st
    765st
    767st
    770st
    772st
    773st
    774st
    775st
    776st
    777st
    780st
    785st
    786st
    787st
    790lktmnoprs
    791lktmnoprs
    792lktmnoprs
    793adflktmnoprs
    796lktmnoprs
    797lktmnoprs
    798lktmnoprs
    

    • In cases from 505t trailing -- should be sliced off.
• Series Title
  • 440anpv:490av - series_title_tsim

Title Display

• Item Lead Statement (no label) display 245abcfgknps or the vernacular title if there is one.
  This should be used for the main title display on a record page and the linked title in a search result. No label, this is the main heading.
• Title display 245abcfgknps in the case that the Item Lead Statement is vernacular. In search results and at the item level.
• Uniform Title display 130adfklmnoprs:240adfklmnopr including vernacular. Uniform titles are a common way of referring to a work which can be called many things.
• Additional Titles display 210ab:246iabfgnp:247abcdefgnp including vernacular. These include abbreviated/sub/alternate/former titles.
• Related Titles display 730adfgiklmnoprst3:740anp including vernacular. These include added entry titles and uncontrolled/alternate titles.
• Series Title display 490avlx3:440anpvx not including vernacular.
• Collection display 793a.

Title Sort

• Using marc_sortable_title: 245 a and b, with non-filing characters stripped off.

Title Spell

• Main Title 245a - title_tsim

Notes for indexing/display:

• In titles, retain punctuation.
• Added entries title_added_entry_tsim are relevant for title searching. In searching limited to title, we include added entries but not related titles. Related titles (title_related_tsim) are included in general keyword search and in the record display.
• Use line breaks for any multi-valued statements, including the additional vernaculars when present.
• Series titles can cause some confusion, as they may contain keywords which aren't necessarily related to the series. For example, "Penguin History of Britain" will return in a title search for "Penguin" if it's part of the title search.
  400/410/411 subfield t were deprecated but we still have indexing set up for them.(?)