Classification Web - Library of Congress

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Searching

Search Screen

From the Class Web Main Menu screen, click on Classification Search. The Classification Search screen is displayed:


Classification Search Screen

Individual input fields on the screen allow for various types of searches. These search fields can be used singly or in combination with each other.

Caption Searches

Here's an example of the simplest type of search. Type the word Titanic in the Caption search field and click Search. Class Web retrieves all classification numbers in LCC that have captions beginning with the word Titanic:


Results Screen for Search on

'Titanic'

Since this is a left match, not a keyword, search, only captions that begin with the search term are retrieved. If a phrase is used as a search term, only captions that begin with that exact phrase are retrieved.

If you click on any of classification numbers that appear in the search results list, Class Web opens a new browse window showing that number in its context within a specific LCC schedule. For example, clicking on the second number listed above opens the following window:


Browse Screen for VK1255.T6

To close the window and return to the search results screen, click Close.

When you do a simple search like this, using only one of the input fields on the Basic Classification Search screen, you may click on either the Search button or on the Browse button located at the right of the input field that you are using. The search results are the same in either case, but if you use the Browse button, Class Web displays the search results in the context of alphabetically adjacent terms instead of in isolation:


Search Results for 'Titanic' when

Browse button is used

Keyword Searches

If you wish to find a specific word or phrase in LCC, and not limit your search to the first word(s) of a caption, use the Keyword search field.

Type the word hotlines in the Keyword search field and click Search. Class Web retrieves one item:


Search Results for 'hotlines' as

Keyword

Notice that the word you searched is not present in the caption. Click on [HF5382.7-.75] to open a window that displays this classification number in context.


Browse Display of HF5382.7-.75

The note Including job hotlines and computer networks appears below the caption. Keyword searches retrieve not only terms that appear in captions but also words that are in notes or other textual fields in classification records.

Click on Close to close this window.

Combining Two Options in a Single Search

Suppose you want to find all of the Biography numbers in the Q (Science) schedule. Type the word biography in the Caption field and the letter q in the Classification number field. Since you are using multiple search fields in a single search, you cannot use the Browse buttons. Click the Search button instead. Class Web retrieves a list of 42 items having a caption that begins with the word Biography and a classification number that begins with the letter Q:


Search Results for 'biography' and

'q'

Since most of the captions consist of only the single word Biography, they would be more meaningful if each were displayed with its full hierarchy. In the Display Options area of the search screen (below the search fields), click the entire hierarchy radio button. Then click the Redisplay button at the bottom of the screen. Class Web provides a new display showing the entire hierarchy for each caption:


Search Results for 'biography'

and 'q' Showing Entire Hierarchy

The various display options and search options provided by Class Web enable you to customize each search to your own specifications.

Here's another example of a search that combines two options. If you wish to find the caption France in Table H1, type france in the Caption field and h1 in the Classification number field. In the Include statement under Display Options, click the radio button for tables. Then click the Search button. Class Web retrieves four items having the caption France and a table number that begins with H1.


Search Results for 'France' and

'H1'

By default, Class Web has truncated your search and retrieved items in tables H1, H10, H18, and H19. If you wish to override this truncation feature and limit your search only to Table H1, click the Exact match check box, which appears under Search options. If you redo your search with this box checked, Class Web retrieves only the single item in Table H1 having the caption France.

More information and tips on searching are available by clicking the Classification Web Help button.


[ Introduction ] [ Getting Started ] [ Searching ] [ Enhanced Browser ] [ Hierarchy Browser ]
[ Personal Notes and Hot Links ] [ Subject Heading & Classification Number Correlations ]
[ Subject Headings ] [LC/Dewey Correlations ] [ CLASSIFICATION WEB Main Menu ]

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Library of Congress Help Desk (December 16, 2004)

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