Sap Ag

Sap Se

Michael Altenhofen

Wolfgang Gerteis

Andreas S Krebs

Wolfgang Theilmann

Torsten Leidig

Andreas Friesen

Joachim Schaper

Jens Lemcke

Thomas Hettel

Christian Merz

Harald Fuchs

Martin Wessner

Norbert Meder

Egon Boerger

An example embodiment refers to a method to organize and manage a semantic web service discovery within a network with a distributed architecture of multiple independent network nodes, each node being able to store a subset of semantic web service instances, wherein an assignment of each semantic web service instance to at least one network node is automatically computed based on a defined vocabulary derived from ontologies that is distributed over the network nodes and that is used both in describing and finding that instance on request. An example embodiment further covers a system, a computer program and a computer program product to organize and manage a semantic web service discovery within a network.

Method and a system to organize and manage a semantic web service discovery

A method performs a dynamic update of at least one composed web service within a web service environment. The composed web service relies on a set of component services which are linked to at least one goal of the composed service. The method includes publishing the at least one goal within a registry of the web service environment. The links between the component services and the at least one goal in the registry are stored, and the links dynamically updated in the case that any service change within the web service environment occurs.

Method for performing a dynamic update of composed web services

A mediator system (and associated methods and computer program products) for mediating a communication between a client and a plurality of providers within a network is described. The mediator system may include logical machines including a first receiving machine configured to receive a request message from the client, a first sending machine configured to send answer messages back to the client, a processing machine configured to handle the received request message internally represented as a request object, a second sending machine configured to send outgoing request messages to the providers, and a second receiving machine configured to receive incoming answer messages from the providers. The machines can be scheduled separately from being executed, and the request object may be split into subrequests, where each of those subrequests may be further decomposed into subsubrequests that may be sent out in parallel to the providers.

System and a method for mediating within a network

An embodiment includes a method that includes receiving, into a cache server, from a client, a request for content from a content server. The request for content includes one or more fields. The method also includes mapping the request for content into a new request for content that is without the one or more fields. The method includes performing a lookup into a cache list of the cache server based on the new request for content.

Mapping of a content request for a cache server

A method to analyze impact of changes to a model includes accessing a proposed change to a model. An expression that is relevant to the proposed change is accessed. An instances set associated the expression is obtained. The instance set is evaluated to determine an impact of the proposed change to the model. An application utilizes the expression of a model. An impact analyzer assesses impact of a change to the model by evaluating at least one of the one or more expressions and returning an evaluation set for use by the application.

Method and system for expression evaluation

A learning system, method, and data structure provides collaborative activities between learners. The system includes an interface to receive a learning strategy selected by a learner. A content management system stores content and one or more collaboration elements associated with a course. A learning management system determines the learning content and the one or more collaboration elements to present to the learner based on the selected learning strategy. The learner participates using the collaboration element at a time of the learner's choosing while taking the course. The collaboration activity may be based on one or more collaboration scenarios including a brainstorming activity, a cooperative text processing activity, an explanation discourse activity, an answer-to-tutor activity, and a pro-contra dispute. The collaboration element may be provided as an intentional point of collaboration.

Instructional architecture for collaborative e-learning

A learning system maintains an account of a student's information, courses, skills, and qualifications. The student may take courses offered by the learning system online or offline. To take a course offline course information is downloaded to an offline player at the student's location; however, the state of the student in the course is maintained by the learning system (online). A state manager is provided between the offline player and the student's account in the learning system. The state manager uses four states to transition between online and offline in order to ensure the integrity and synchronization of the online learner account.

Offline e-learning system

A repository manager and copy editor may be used to create an offline course, which allow learners to process course material locally on their computer without the need to connect to the e-learning system. A generic packaging list is created when the course is offered offline. A specific packaging list customized for the learner is created when the offline course is downloaded. An offline manager tool provides an interface for taking the course offline.

Offline e-courses

A course editor includes an input to accept author commands. An interface processes and displays the author commands to facilitate the creation of a course. The interface may include a workspace to display and assemble the structural elements into the course. The workspace may include a menu of structural elements that may be added to the course. The workspace is configured to display a structural element in response to an author command selecting the structural element from the menu. The structural elements may be a sub-course, a learning unit, and/or a knowledge item.

E-learning course editor

An e-learning course may include a number of structural elements that are aggregated into one or more levels. Each higher level may refer to any instance of a lower level. The structural elements include a course, a sub-course, a learning unit, or a knowledge item. The structural elements may include metadata. The structural elements also may include relations between structural elements. The course and its structural elements do not enforce any sequence of structural elements that the learner may use to traverse the course. In addition, the structural elements may be reused and reassembled to form different courses. A content repository is configured to store course data and its structural elements. A content player is configured to access the stored course data and assemble the structural elements.

E-learning course structure

A learning system, method, and data structure provides collaborative activities between learners. The system includes an interface to receive a learning strategy selected by a learner. A content management system stores one or more structural elements associated with a course. A learning management system determines the learning content and the one or more structural elements to present to the learner based on the selected learning strategy.

Structural elements for a collaborative e-learning system

A learning system, method, and software generate a navigation path through a course based on a learning strategy. The course may be navigated by receiving graphs corresponding to the course, applying the learning strategy to the graphs, and generating a navigation path through the course for the learner based on the applied strategy. The navigation path may be used to suggest content from the course for presentation to a learner.

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Karlsruhe, Germany

Michael Altenhofen