Digital Library Service Integration @ 
a part of the NSF's 
project
a part of the NSF's project |
|
Digital Library Service Integration @
a part of the NSF's project |
|
Quick Explanation
News and Events Senior Project opportunities for Spring 2003: For NSDL All projects meeting in Dec '02 |
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The DLSI infrastructure consists of four levels: an independent user interface, the Integration Manager, collection and service wrappers, and independent collections and services. See the figure. The wrapper's main task is to parse the display screens that appear on the user's Web browser to identify the "elements of interest" that DLSI will make into link anchors. First, wrappers will parse the display based on an understanding of the structure of its content. Second, DLSI will parse the display content using lexical analysis to identify additional elements of interest. If a service can operate on an element, DLSI will generate a link anchor over the element. Among the links generated for that anchor will be a link leading directly to that service's feature. Relationship rules specify which links DLSI will generate when the user clicks on a link anchor. 
Figure: DLSI Architecture. DLSI is within the shaded area. The dashed paths indicate that once integrated, collections and services can share features through DLSI links automatically. Collections and services also continue to operate independently of DLSI. Services and collections generally will require minimal or no changes to plug into the DLSI infrastructure. To integrate a collection or service with DLSI, an analyst must write a wrapper, initiate communications between the collection or service and the wrapper, and define relationship rules. The DLSI Integration Manager module manages relationship rules. Note that collections and services will continue to function as before. DLSI will supplement them for users who access them through DLSI's framework. All other users will use the services directly as before, and not see any of DLSI's supplemental features. |
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| New Jersey Institute of Technology | ||||||
| College of Computing Sciences | ||||||
| Information Systems Department | ||||||
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bieber @ oak.njit.edu website design by Nkechi Nnadi |
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