Revista Romana de Interactiune Om-Calculator

15-34

Authors: Dumitru-Clementin Cercel, Stefan Trausan-Matu

Part-of-speech tagging (POS tagging) is the process of grammatical labelling of each word in a sentence, phrase or paragraph with the corresponding part of speech. This process is a component of other modules of natural language processing and therefore the results should be as precise as possible. Once a part of speech has been identified, it provides supplementary information about the parts of speech that can appear in the same sentence. In the case of POS tagging, the ambiguities arise due to the fact that a word may have multiple morphological values depending on context. In this paper is performed, from an experimental perspective, an analysis of a POS Tagger based on a Second-Order Hidden Markov Model, using the Brown corpus. The tests have been conducted to obtain results according to various parameters. We will show how changes the accuracy of a POS tagger for English when become different, on the one hand, the training set size, and on the other hand, the domains of the original functions in comparison with the domain of the training set. We have identified the categories of texts from Brown corpus used for the training corpus when the accuracy of the POS tagger is higher, lower respectively.

59-80

Authors: Vasile Danut Mihon, Angela Minculescu, Vlad Colceriu, Dorian Gorgan

Most of the times, modeling and simulating natural phenomena involves a large number of operations, based on different compatibility constraints and rules. The solution proposed in this paper optimizes the entire description process through execution workflows. It offer the users special interaction techniques for workflow specification, automatic mechanism for syntactic validation of the described phenomena, hierarchical organization of the workflow, collaborative environment, reuse of resources, graphical modules customization. The proposed solution is intended to be used by both technical and non-technical users that do not have knowledge about the computational infrastructure. This paper describes the features implemented within the WorkflowEditor application that allows the interactive workflow development used in distributed processing of spatial data.

97-108

Authors: Grigoreta-Sofia Cojocar, Adriana-Mihaela Guran

Faculty admission websites are used every year by thousands of people looking for some kind of information. In this paper we present an empirical evaluation of Babeş-Bolyai University faculty admission websites. The university has 21 faculties, each one having its own website. The evaluation is performed using different criteria (i.e., the design, the displayed information, the language used, etc ) derived from usability heuristics.