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5 Basic Analyses5.1 My LibraryThe My Library analysis presents your library's holdings in a spreadsheet-style table called the Analysis Results screen, according to the selected analysis dimensions. For a description of screen functions see: section 11.1, "Analysis Results Screen". This analysis is automatically created for all libraries that have subscribed to the WorldCat Collection Analysis service as an individual institution. Example:
This analysis is identified as My Library on the Data to Analyze screen.
Analysis typeThe My Library analysis is created as an Individual Library Analysis; see section 1.3, "Types of Analysis" for more information about this analysis type. DefaultsThe default Analysis Results screen presents Publication Date ranges as the table columns, and the OCLC Conspectus Divisions as rows. The default row expansion order is:
View graph displayYou can view a graph of the data from a single row of the analysis table by selecting Changing the analysisYou can vary the order in which dimensions are applied to this analysis by using the Change Analysis screen. Column values. For My Library, you may select one of these dimensions as the column value for the Analysis Results screen:
Row expansion. For row expansion, you may re-order the following dimensions except the one you have selected for the column value:
See section 11.3, "Change Analysis Screen" for more information. Limiting the analysisYou can reduce the overall results of an analysis by reducing the breadth of one or more of the dimensions. You reduce the breadth by creating subsets of an analysis dimension on the Limit Analysis screen. For My Library you can select subsets of the following dimensions:
See section 11.4, "Limit Analysis Screen" for more information. View recordsTo view actual holdings for a given row/column, select the number shown in the corresponding table cell.
Summary bibliographic information is provided as a List of Records screen. Records are ranked by the number of libraries holding the item in WorldCat, in descending order, that is, items held by the most libraries display first on the list.
back to top 5.2 Group AnalysisLibraries can choose to subscribe to WorldCat Collection Analysis as part of a group, referred to as a Subscription Group. A Group Analysis presents the titles for the individual member libraries in a spreadsheet-style table called the Analysis Results screen, according to the selected analysis dimensions. For a description of screen functions see: section 11.1, "Analysis Results Screen". This analysis is automatically created for all libraries subscribing to the WorldCat Collection Analysis service as part of a Subscription Group. Example:
This analysis appears as the [group name] in the Basic Analyses area of the Data to Analyze screen.
Analysis typeThis analysis is created as an Group Analysis; see section 1.3, "Types of Analysis" for more information about this analysis type. DefaultsThe default Analysis Results screen presents Publication Date ranges as the table columns, and the OCLC Conspectus Divisions as rows. The default row expansion order is:
View graph displayYou can view a graph of the data from a single row of the analysis table by selecting Changing the analysisYou can vary the order in which dimensions are applied to this analysis by using the Change Analysis screen. Column values. For a Group Analysis, you may select one of these dimensions as the column value for the Analysis Results screen:
Row expansion. For row expansion, you may re-order the following dimensions except the one you have selected for the column value:
See section 11.3, "Change Analysis Screen" for more information. Limiting the analysisYou can reduce the overall results of an analysis by reducing the breadth of one or more of the dimensions. You reduce the breadth by creating subsets of an analysis dimension on the Limit Analysis screen. For a Group Analysis you can select subsets of the following dimensions:
See section 11.4, "Limit Analysis Screen" for more information. View recordsTo view actual holdings for a given row/column, select the number shown in the corresponding table cell.
Summary bibliographic information is provided as a List of Records screen. Records are ranked by the number of libraries holding the item in WorldCat, in descending order, that is, items held by the most libraries display first on the list.
OverlapA Group Analysis provides an Overlap view which shows the number of titles a library holds jointly with other libraries/institutions in its Subscription Group. Example:
Names vs symbols. The initial display shows library names as the column headings. To change the headings to OCLC symbols select the View Library Symbols link at the top of the Overlap tab.
The table is redrawn with the libraries' OCLC symbols and the link changes to View Library Names. See section 1.7, "Overlap/Uniqueness Implementation" for details. UniquenessA Group Analysis provides a Uniqueness view which shows how broadly a given title is shared among the members of a group, that is, how many of a library's titles are held by it alone, and how many are held by one other member (Shared by two), held by two other members (Shared by three), by three other members (Shared by four), and so on. Example:
See section 1.7, "Overlap/Uniqueness Implementation" for details. back to top5.3 Aggregated Group AnalysisAn Aggregated Group Analysis combines the titles of all members of the group and then removes duplicates so that the group appears as a single institution. The resulting titles are presented in a spreadsheet-style table called the Analysis Results screen according to the selected analysis dimensions. For a description of screen functions see: section 11.1, "Analysis Results Screen". This is automatically created for all libraries subscribing to the WorldCat Collection Analysis service as part of a Subscription Group. Example:
This analysis is identified by the Subscription Group's name followed by (Aggregate) on the Data to Analyze screen.
Analysis typeThis analysis is created as an Aggregated Group Analysis; see section 1.3, "Types of Analysis" for more information about this analysis type. DefaultsThe default Analysis Results screen presents Publication Date ranges as the table columns, and the OCLC Conspectus Divisions as rows. The default row expansion order is:
View graph displayYou can view a graph of the data from a single row of the analysis table by selecting Changing the analysisYou can vary the order in which dimensions are applied to this analysis by using the Change Analysis screen. Column values. For an Aggregated Group Analysis, you may select one of these dimensions as the column value for the Analysis Results screen:
Row expansion. For row expansion, you may re-order the following dimensions except the one you have selected for the column value:
See section 11.3, "Change Analysis Screen" for more information. Limiting the analysisYou can reduce the overall results of an analysis by reducing the breadth of one or more of the dimensions. You reduce the breadth by creating subsets of an analysis dimension on the Limit Analysis screen. For an Aggregated Group Analysis you can select subsets of the following dimensions:
See section 11.4, "Limit Analysis Screen" for more information. View recordsTo view actual holdings for a given row/column, select the number shown in the corresponding table cell.
Summary bibliographic information is provided as a List of Records screen. Records are ranked by the number of libraries holding the item in WorldCat, in descending order, that is, items held by the most libraries display first on the list.
back to top 5.4 WorldCat ComparisonThe WorldCat Comparison compares a library's or Subscription Group's holdings to all of WorldCat in a spreadsheet-style table called the Analysis Results screen, according to the selected analysis dimensions. This analysis can be used to determine how widely a library's or Subscription Group's holdings are replicated within WorldCat. For a description of screen functions see: section 11.1, "Analysis Results Screen". This analysis is provided automatically to all libraries and groups that subscribe to the WorldCat Collection Analysis service. The display shows uniqueness, that is, how many of the library's/group's holdings are unique compared against all of WorldCat, how many are held in WorldCat by the library/group and by one other library or group member (Shared by 2), held by two other libraries/group members (Shared by 3), up to held in WorldCat by more than 10 other libraries or group members (Shared by > 10). Example:
This analysis is identified as WorldCat Comparison on the Data to Analyze screen.
Analysis typeThe WorldCat Comparison analysis is created as an Individual Library Comparison; see section 1.3, "Types of Analysis" for information about this analysis type. ApplicationFor an example of the use of a WorldCat Comparison by an individual institution, see the OCLC Best Practices presentation Preparing for Digitalization Projects at: http://www5.oclc.org/downloads/tutorials/wca/dp/digitization.htm. DefaultsThe default Analysis Results screen presents the Shared By dimension as the table columns, and the OCLC Conspectus Divisions as rows. For the WorldCat Comparison, the default expansion order is:
View graph displayYou can view a graph of the data from a single row of the analysis table by selecting Changing the analysisYou can vary the order in which dimensions are applied to this analysis by using the Change Analysis screen. Column values. For a WorldCat Comparison the only column value is Uniqueness. Row expansion. For row expansion, you may re-order the following dimensions:
See section 11.3, "Change Analysis Screen" for more information. Limiting the analysisYou can reduce the overall results of an analysis by reducing the breadth of one or more of the dimensions. You reduce the breadth by creating subsets of an analysis dimension on the Limit Analysis screen. For a WorldCat Comparison you can select subsets of the following dimensions:
See section 11.4, "Limit Analysis Screen" for more information. View recordsTo view actual holdings for a given row/column, select the number shown in the corresponding table cell.
Summary bibliographic information is provided as a List of Records screen. Records are ranked by the number of libraries holding the item in WorldCat, in descending order, that is, items held by the most libraries display first on the list.
back to top 5.5 WorldCat Comparison (FRBR Applied)Libraries may choose to create an additional WorldCat comparison in which their holdings are compared to the titles in WorldCat irrespective of format. For example, a library that owns only a recorded copy of Chancellorsville (Sears, Stephen W; Davidson, Richard M. Prince Frederick, Md : Recorded Books, 1997) will match the WorldCat record for the printed edition (Houghton-Mifflin Co., 1996). This will prevent differences in format from causing what are in fact different versions of the same title to appear as unique to a library's collection. See section 5.6, "About Multi-Version Records" for more information. You must create a WorldCat Comparison (FRBR-Applied) using the WorldCat Services Administrative Module (see chapter 2, Administrative Functions). The display shows uniqueness, that is, how many of the library's/group's holdings, irrespective of format, are unique compared against all of WorldCat, how many are held in WorldCat by the library/group and by one other library or group member (Shared by 2), held by two other libraries/group members (Shared by 3), up to held in WorldCat by more than 10 other libraries or group members (Shared by > 10). This analysis is identified as WorldCat Comparison (FRBR Applied) on the Data to Analyze screen.
DefaultsThe default Analysis Results screen presents the Shared By dimension as the table columns, and the OCLC Conspectus Divisions as rows. For the WorldCat Comparison, the default expansion order is:
View graph displayYou can view a graph of the data from a single row of the analysis table by selecting Changing the analysisYou can vary the order in which dimensions are applied to this analysis by using the Change Analysis screen. Column values. For a WorldCat Comparison (FRBR applied) the only column value is Uniqueness. Row expansion. For row expansion, you may re-order the following dimensions:
See section 11.3, "Change Analysis Screen" for more information. Limiting the analysisYou can reduce the overall results of an analysis by reducing the breadth of one or more of the dimensions. You reduce the breadth by creating subsets of an analysis dimension on the Limit Analysis screen. For a WorldCat Comparison you can select subsets of the following dimensions:
See section 11.4, "Limit Analysis Screen" for more information. View recordsTo view actual holdings for a given row/column, select the number shown in the corresponding table cell.
Summary bibliographic information is provided as a List of Records screen. Records are ranked by the number of libraries holding the item in WorldCat, in descending order, that is, items held by the most libraries display first on the list.
back to top 5.6 About Multi-Version RecordsFor a WorldCat Comparison (FRBR Applied), WorldCat Collection Analysis groups items of similar intellectual content into a single record; this concept is often referred to as FRBR (see: Functional Requirements for Bibliographic Records - Final Report at http://www.ifla.org/VII/s13/frbr/frbr.htm). For this comparison, OCLC combines bibliographic information for different editions or formats of given work into a multi-version record. For example, a library that owns a printed edition of Michelangelo & the Pope's ceiling and a library that owns the recorded edition (Recording for the Blind & Dyslexic, 2003) will both match the listing in Booklist. The List of Records screen for this comparison will show the title only once..
Most common versionIn some cases, an additional title, displayed in green and labeled (most common version), appears when a uniform title is used as the basis for a multi-version record.
Your own holdingsWhen you select an item's title, WCAS displays the multi-version record. Your own holdings will be listed first within the Matching Versions list.
The remaining items in the Matching Versions list are held in WorldCat by other institutions. These will help you determine whether your version of a title has been superceded by a newer edition and also show you the number of institutions that have purchased the new edition. back to top |
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