WorldCat Collection Analysis glossary

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A

Audience
Either Adult or Juvenile; based on MARC Field 008, byte 22: Target audience.

Authoritative list
A published list of recommended titles. For example: School Library Journal, Library Journal, Outstanding Academic Titles, etc.

Authoritative list comparison
A comparison of the user's institution's holdings to a recommended list of titles.

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B

Basic analyses

Analyses that are furnished automatically to all subscribers.

  • For Individual Subscribers these include the My Library analysis and WorldCat Comparison.
  • For Group Subscribers these include Group Analysis, Aggregated Group Analysis and WorldCat Comparison.
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C

Category
See Class (Noun:).
The second level of the OCLC Conspectus. Each category represents a topic within a specific division. See also Division, subject.

Change Analysis
The screen that allows the user to change the data to be analyzed, the column values and the row expansion order.

Collection Analysis
The WorldCat Collection Analysis service. An OCLC Web-based service that provides analysis and comparison of library collections based on holdings contained in WorldCat and circulation information that is provided by libraries.

Column values
The data analysis dimensions that span the top of the Analysis Results screen. Available dimensions vary by analysis, but can include Language, Format or Publication Date. The dimensions can be re-ordered by a setting on the Change Analysis screen.

Conspectus
A three-level subject hierarchy (Division > Category > Subject) that serves as a blueprint of how the WorldCat Collection Analysis service aggregates three distinct classification systems (LC, Dewey, and NLM). Call numbers from all three classification schemes are mapped to this hierarchy. See also Division, Category, subject.

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D

Data to Analyze
The default or "main-menu" screen of the WorldCat Collection Analysis service. From this screen you can view any of your existing analyses.

Division
The second level of subdivision in the DDC, represented by the first two digits in the notation, e.g., 62 in 620 Engineering and allied operations. See also DDC Summaries; Main class; Section.
The first and broadest level of the OCLC Conspectus. Each division represents a broad discipline of knowledge. See also Category, subject.

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F

Format
An analysis dimension that refers to the material type of an item. Format is based on the MARC record Leader (LDR) byte 6: Type of Record and byte 7: Bibliographic level. WorldCat Collection Analysis allows users to limit their analyses to any of 28 format types.

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I

ILL Analysis
A type of analysis which allows an institution to determine borowing and lending activity of its collection within WorldCat Resource Sharing.

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L

Limit Analysis
A WorldCat Collection Analysis screen screen that allows users to reduce the breadth of an analysis by specifying subsets of one or more analysis dimensions.

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M

My Library
An analysis that allows an institution to measure its own holdings.

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O

One-to-One Comparison
An analysis that compares the user's institution's holdings to only one other individual institution's holdings.

Overlap
A view of an analysis showing the titles owned by all comparing institutions

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P

Peer Comparison
An analysis that compares the user's institution's holdings to the aggregated holdings of from two to five other institutions. Aggregated means that duplicate titles are removed.

Predefined Group Comparison
An analysis that compares the user's institution's holdings to the aggregated holdings of a group of institutions selected by OCLC for the significance of their collection. Aggregated means that duplicate titles are removed.

Publication Date
An analysis dimension that refers to the date an title was published. Users can limit their analyses to specific years or ranges of years (e.g. 1970-1979). Publication date data comes from the MARC record fields 008, bytes 7-10: Date 1 and byte 260 ‡c:(Date of publication, distribution, etc.).

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R

Row Expansion order
A setting available on the WorldCat Collection Analysis Change Analysis screen. This setting is used to re-order the expansion sequence of the analysis dimension rows on the left side of the Analysis Results screen. A user can expand a row (an analysis dimension) to the next level by clicking on the dimension.

Run analysis
The act of generating a new dataset that corresponds to a user-defined set of analysis dimensions. The Run Analysis button is available on the Limit Analysis and Change Analysis screens.

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S

subject
The third and most detailed level of the OCLC Conspectus. Each subject provides the most detailed identification within a specific category. See also Division, Category.

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U

Uniqueness
A view of an analysis showing the titles owned solely by one institution among a given set of institutions.

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W

WorldCat Comparison
An analysis that allows an institution to compare its holdings against all of WorldCat.