1,721,036 research outputs found
Automating question generation and marking of language learning exercises for isiZulu
Full text linkIncrease in isiZulu language learning is hampered by the predominantly manual approach to creating and marking homework and test exercises. Extant computer-assisted language learning platforms cannot handle the intricacies of agglutination in isiZulu and related languages. We seek to address this by designing a controlled natural language-based exercise generator and marker for isiZulu. This consists of question and answer sentence templates for exercise types, reusable algorithm snippets as grammar library, a small corpus of words and sentences to be used by the system, a constrained sentence generator to combine the right type of words, and finally the exercise creation and automated marking system. The preliminary evaluation shows encouraging results
Guided entity reuse and class expression generator
No full textGeneric, reusable ontology elements, such as a foundational ontology?s categories and part-whole relations, are essential for good and interoperable knowledge representation. Ontology developers face the challenge to figure out which category their class belongs to and which relationship to choose for their ontology authoring tasks. To reduce this bottleneck, there is a need to have guidance to handle these Ontology-laden entities. We solve this with the generic approach GENERATOR: Guided ENtity reuse and class Expression geneRATOR that enables easy reuse of already represented knowledge such that it guides the modeller toward the comparatively best options of possible axioms to add. This has been realised with DOLCE, part-whole relations, and an automated reasoner that is used during the authoring process to propose feasible axioms, and the software has been integrated in the MoKi ontology development tool
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
The Data Mining OPtimization Ontology
Full text linkThe Data Mining OPtimization Ontology (DMOP) has been developed to support informed decision-making at various choice points of the data mining process. The ontology can be used by data miners and deployed in ontology-driven information systems. The primary purpose for which DMOP has been developed is the automation of algorithm and model selection through semantic meta-mining that makes use of an ontology-based meta-analysis of complete data mining processes in view of extracting patterns associated with mining performance. To this end, DMOP contains detailed descriptions of data mining tasks (e.g., learning, feature selection), data, algorithms, hypotheses such as mined models or patterns, and workflows. A development methodology was used for DMOP, including items such as competency questions and foundational ontology reuse. Several non-trivial modeling problems were encountered and due to the complexity of the data mining details, the ontology requires the use of the OWL 2 DL profile. DMOP was successfully evaluated for semantic meta-mining and used in constructing the Intelligent Discovery Assistant, deployed at the popular data mining environment RapidMiner
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Foundational ontology interchangeability with the Repository of Ontologies for MULltiple USes (ROMULUS).
No full textM. Sc. University of KwaZulu-Natal, Durban 2013.The notion behind foundational ontologies is to have a single foundational ontology to serve as a
basis for providing high-level entities and relations that are common between all ontologies in or-
der to facilitate interoperability among heterogeneous systems. However foundational ontologies
alone do not suffice in solving the problem of interoperability, due to the fact that many founda-
tional ontologies exist, each with conflicting philosophies. The WonderWeb Foundational On-
tologies Library (WFOL) was envisioned to facilitate interoperability, but not implemented, pos-
sibly due to a lack of: ontology mediation (alignment, mapping and merging) techniques, docu-
mentation and comparisons between foundational ontologies and modularisation techniques. In
order to solve this problem, three widely used foundational ontologies: DOLCE, BFO and GFO
were selected and a web-based repository, ROMULUS was created. Ontology mediation was
performed to assist in achieving foundational ontology interchangeability between the selected
foundational ontologies. Modularity was performed to simplify ontologies in order to easily
perform mediation and to create modules for specific functions. ROMULUS provides the user
with access to: new foundational ontology modules, mappings between foundational ontologies,
merged foundational ontologies, a higher level foundational ontology containing only the most
general entities common to the three foundational ontologies and a method to assist the user with
performing foundational ontology interchangeability. The new modules in ROMULUS (separate
endurant/perdurant modules, OWL 2 profile modules, and more/less-detailed ontology modules)
are useful when one wants to perform functionality specific to the module type. The mapping and
merged ontologies, which may be used together with the method for performing foundational on-
tology interchangeability, allow a user to convert between the three foundational ontologies and
to link an ontology using a particular foundational ontology to a different ontology that uses
another foundational ontology, thereby achieving transparency. The higher level foundational
ontology may assist in interoperability because it is a single ontology that encompasses entities
that are common between all three foundational ontologies. ROMULUS has been evaluated in
terms of its foundational ontology interchangeability, accuracy of alignments and by comparing
it to other repositories. From the evaluations, we realised the following: While barely 50% of
the participants agreed with the alignments, real disagreement was less than 10%; foundational
ontology interchangeability may be achieved using the merged ontologies; ROMULUS offers
advanced functionality for most criteria when compared to other repositories. Therefore there is
reason to believe that ROMULUS does assist with foundational ontology interoperability
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