Web NDL Authoritiesについて

The following shows how to operate (especially, how to search) and each screen display.

1. Search from front page

There are three ways to search for authority data as shown in Figure 1, i.e. 1-1. Search by Keyword, 1-2. Search by Classification Numbers and 1-3. Search by Authority ID.

Figure 1: Web NDL Authorities Front Page (Keyword Search) Screen

1-1. Search by Keyword

Click the “by keyword” tab shown in 1-1 to enter the search keyword in the input field and start searching.
Users may select the “All”, “Name”, or “Topical Name”, or “Genre/Form Term” radio button beneath the input field. After selecting “Name”, users can search by Personal Name, Family Name, Corporate Body Name, Geographic Name, Uniform Title and Work. After selecting “Topical Name”, users can search by Topical Term and Subdivision. After selecting Genre/Form Term, users can search by Genre/Form Term.

1-1-1. Search Object

Search objects include Names/Titles, Variant Names/Titles as well as katakana form and romanized form of them.
If you search for personal names and cannot find any results, be sure to insert a space between the family name and given name.
Search results are affected by spaces between words. Expressions in the search index have spaces between words. If your search does not find any items of interest by using katakana form or romanized form, be sure to separate each word with a space.

Example:
ID:00054222
To search for the Name/Title “夏目, 漱石, 1867-1916 (ナツメ, ソウセキ, 1867-1916)”
The word without spaces “ナツメソウセキ” (NatsumeSouseki) does not find any items of interest.
The word with spaces “ナツメ ソウセキ” (Natsume Souseki) does find items of interest.

1-1-2. Normalization of Characters

Characters shown below are normalized and are considered identical in searches. Thus, a user may input either form and get the same search results.

• Hiragana/Katakana, Alphabet (Upper/Lower cases, Full-/Half- width), Numbers (Full-/Half- width), Basic Latin/Extended Latin
• Upper case “ツ”, “ヤ”, “ユ”, “ヨ”, “ア”, “イ”, “ウ”, “エ”, “オ”, “ワ” and lower case “ッ”, “ャ”, “ュ”, “ョ”, “ァ”, “ィ”, “ゥ”, “ェ”, “ォ”, “ヮ” are recognized as the same letter (same for hiragana).
  Examples:
  Searching for “ギリシャ” also finds “ギリシヤ”.
  Searching for “カッテ” also finds “カツテ”.
• Voiced sound mark (゛)/ Semi-voiced sound mark (゜)/No voiced sound mark・No semi-voiced sound mark
  Example:
  Searching for “パリ” finds both “パリ” and “バリ”.
• “ヴァ”, “ヴィ”, “ヴ”, “ヴェ”, “ヴォ” / “バ”, “ビ”, “ブ”, “ベ”, “ボ”
  Example:
  Searching for “ヴァイオリン” also finds “バイオリン”.
• Variants of Kanji
  Example:
  Searching for “渡辺” finds “渡邉” and “渡邊” as well.

The following codes are not recognized.

• Half-width apostrophes (‘), plus signs (+), periods (.), grave accents (｀), or hyphens (-)
• Full-width center dots (・)
  Example:
  ID:00564245
  If you want to search for the Name/Title “遺跡・遺物”, searching for “遺跡遺物” or “遺跡・遺物” will both retrieve the same results set.

All half-width and full-width punctuations or symbols other than the above are handled as spaces. An AND search is conducted for character strings before and after a space.

Example:
ID:00276855
If you want to search for the Name/Title “AT&Tベル研究所”, you can also get the same results by searching for “AT△Tベル研究所”, where the △ indicates a space. Searching for “ATTベル研究所” does not find any items of interest.

1-1-3. Prefix Search

Adding either a half-width asterisk (*) or full-width asterisk (＊) to the end of a search string conducts a prefix search.

Example: Searching for “日本歴史＊” finds the Names/Titles that start with “日本歴史”, including “日本歴史学会” and “日本--歴史--1945--1952”.

1-1-4. Restriction

Due to system restrictions, a keyword that contains only a single kanji in combination with other characters will often fail to find meaningful hits from the authority data.

Examples: Searching for “さいたま市” does not find “さいたま市立中央図書館”, because the search index contains “さいたま” and “市立” as separate words.
Alternatively, searching for “さいたま” or “さいたま市立” does find “さいたま市立中央図書館”.

1-2. Search by Classification Numbers

The Classification Number Search allows users to search for authority data for Geographic Name, Uniform Title, Work, and Topical Term by representative classification numbers from the Nippon Decimal Classification (NDC) 9th Revised Edition, NDC 10th Revised Edition or the National Diet Library Classification (NDLC), which are assigned to the authority data. Users can choose either from a dropdown list ((a) in Figure 2) to search. In addition to searching for exact matches, users can do a prefix search by adding either a half-width asterisk (*) or full-width asterisk (＊) at the end of the search string.

Example: Searching for ME352 will find Names/Titles with a representative classification of ME352, such as “阿賀川”, etc.

Example: Searching for ME* will find Names/Titles with a representative classification that starts with ME, such as “雨” (representative classification of ME129) or “阿賀川” (representative classification of ME352).

Users may select “All”, “Name”, or “Topical Name”, or “Genre/Form Term” radio button in the search window ((b) in Figure 2.). Users can search Geographic Name, Uniform Title and Work by selecting the “Name” button, and can search Topical Term by selecting the “Topical Name” button. However, the Classification Number is not added to Genre/Form Term, so users cannot search Genre/Form Term by representative classification numbers.

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1-3. Search by Authority ID

The Authority ID search allows users to search for authority data by the NDL’s authority ID. By entering the authority ID in the search box, users can access the Detailed Information Screen of the authority data for the target ID.

2. Search Result Screen

2-1. Search Result List Screen

Results of Keyword Search and Classification Number Search are displayed in a list, as shown in Figure 4 below. The screen comprises the following parts: (a) Search conditions, (b) Search refinement (Type of Authority), (c) Page feed, (d) Records per page and (e) Search results. The description of each part is as follows.

Authorized Heading                Type of Authority
創作者: Creator(s)
→: Related Name(s) (Another Name), Related Work(s)
← Variant Name(s) / Title(s) 

2-2. Detailed Information Screen

This shows detailed individual authority data from search results. This screen is divided into 4 parts as shown in Figure 5: (a) Detailed Information of the authority data, (b) Graphical Display, (c) Search Box, and (d) Search bibliographic data via NDL Search. The description of each part is as follows.

2-2(a). Detailed Information of the authority data

Data items shown in the Detailed Information tab are shown below. Each item is explained in the following table.

2-2(b). Graphical Display

When authority data which has Detailed Information shown that includes Broader Term, Narrower Term and Related Term, Graphical Display is available. Users can see a graphical display of the thesaurus structure by clicking the “Graphical Display” Tab as shown in Figure 6.
Solid lines show Broader Terms, dashed lines show Narrower Terms, and dotted lines show Related Terms.

2-2(c). Search Box

Similar to the search box on the front page, this search box is used to start a new search. The Authorized Names/Titles of the authority data is shown in the Detailed Information Screen.

2-2(d). Search bibliographic data via NDL Search

By clicking link buttons shown in the Detailed Information Screen, users can access the search results of the bibliographic data in the NDL Search via the ID of the authority data. There are four types of link buttons shown in the following table. If there is no bibliographic data linked to the authority, the search results will be 0. However, for Subdivision, users will move to the top page of the NDL Search even though the button is available.

For more information about the search by clicking link buttons, please refer to ”Searching Materials Using Authority data: Web NDL Authorities Guide“ (link to NDL website).