Ontology Matching Concepts Sample Clauses

Ontology Matching Concepts. In this section, we introduce some of the nomenclature commonly used in ontol- ogy matching, which we will use throughout this paper. The process of matching or aligning two input ontologies (one source ontol- ogy and one target ontology) consists in finding semantic relationships between the classes of the source ontology and the classes of the target ontology. In the context of this paper, these semantic relationships are restricted to equivalence relationships, and are called mappings. The set of mappings between two on- tologies is called an alignment [3]. Ontology matching systems use matching algorithms, called matchers, which assign a numerical value to each mapping. This numerical value reflects the semantic similarity between terms. These matchers can function at different levels, including the element level and the structural level [13]. Element-level matchers analyze concepts or their instances in isolation, ig- xxxxxx their relations with other concepts or instances. These matchers can use internal knowledge only, that is, information contained in the ontology itself, or incorporate external knowledge in the form of reusable alignments, upper or domain ontologies, and other linguistic resources. A popular internal-knowledge element-level matching technique is based on the lexical matching of the labels associated with ontology concepts. Structure-level techniques compare ontology concepts or their instances based on their relationships with other concepts or instances. They can also use exter- nal knowledge, such as instances that are not part of the ontology or previous alignments. Most ontology systems aggregate several distinct matchers: – sequential composition, where the results of one matcher are fed to the next – parallel composition, where distinct matchers are run independently, and their results are combined following specific criteria, • homogeneous, in which the different kinds of data are processed by ap- propriate matchers • heterogeneous, in which the same input is used by distinct matchers Furthermore, the similarity between two ontology concepts may involve the ontologies as a whole, so that the final similarity between two concepts may ultimately depend on all of them. Several approaches use this notion to propagate similarities throughout the ontology [16,11,8]. After the similarities between ontology concepts have been computed, it is necessary to use a global strategy to arrive at a final optimized alignment. These techniques can ...
Sample 1
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Related to Ontology Matching Concepts

  • Matching Contributions The Employer will make matching contributions in accordance with the formula(s) elected in Part II of this Adoption Agreement Section 3.01.

  • Full Employer Contribution - Basic Eligibility Employees covered by this Agreement who are scheduled to work at least seventy-five (75) percent of the time are eligible for the full Employer Contribution. This means:

  • Employer Contribution (a) An Employer contribution for health and dental benefits will only be made for each active employee who has at least eighty (80) paid regular hours in a month and who is eligible for medical insurance coverage, unless otherwise required by law.

  • Elective Deferrals An Employee will be eligible to become a Contributing Participant in the Plan (and thus be eligible to make Elective Deferrals) and receive Matching Contributions (including Qualified Matching Contributions, if applicable) after completing 1 (enter 0, 1 or any fraction less than 1) Years of Eligibility Service.

  • Rollovers of Xxxx Elective Deferrals Xxxx elective deferrals distributed from a 401(k) cash or deferred arrangement, 403(b) tax-sheltered annuity, 457(b) eligible governmental deferred compensation plan, or federal Thrift Savings Plan, may only be rolled into your Xxxx XXX.

  • Employer Contributions 8.1 Rates at which the Employer shall contribute for each hour of work performed on behalf of each employee employed under the terms of this Agreement are contained in the Appendices attached to and forming part of this Agreement.

  • Partial Employer Contribution - Basic Eligibility The following employees covered by this Agreement receive the full Employer Contribution for basic life coverage, and at the employee's option, a partial Employer Contribution for health and dental coverages if they are scheduled to work at least fifty (50) percent but less than seventy-five (75) percent of the time. This means:

  • Full-Time Equivalent (FTE) and Employer Contributions a) The FTE used to determine the Board’s benefits contributions will be based on the average of the Board’s FTE as of October 31st and March 31st of each year.

  • Maintaining Eligibility for Employer Contribution The employer's contribution continues as long as the employee remains on the payroll in an insurance eligible position. Employees who complete their regular school year assignment shall receive coverage through August 31.

  • TEACHING HOURS AND TEACHING LOAD A. As professionals, teachers are expected to devote to their assignments the time necessary to meet their responsibilities, but they shall not be required to “clock in or clock out” by hours and minutes. Teachers shall indicate their presence for duty by placing their signature and time in the proper column of the faculty “sign-in” roster.

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