Banca de DEFESA: ELIVALDO LOZER FRACALOSSI RIBEIRO
Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.DISCENTE : ELIVALDO LOZER FRACALOSSI RIBEIRO
DATA : 10/12/2020
HORA: 09:00
LOCAL: WebConferencia da RNP
TÍTULO:
Defining and Providing Pragmatic Interoperability - The MIDAS Middleware Case.
PALAVRAS-CHAVES:
Syntactic interoperability
Semantic interoperability
Pragmatic interoperability
Conceptual framework
Cloud Computing
Cloud services
PÁGINAS: 189
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Ciência da Computação
RESUMO:
Modern information systems are becoming increasingly complex. This complexity is related to the need to combine heterogeneous software. Since a system may contain many software programs, and each software may be developed independently, providing transparent communication between heterogeneous systems is not a trivial task. The lack of standardization causes a problem known as lock-in. Lock-in situations occur when users are dependent on a system due to the lack of interoperability among different providers. Interoperability is heterogeneous systems’ ability to communicate transparently, and it is classified into three levels: syntactic, semantic, and pragmatic. The syntactic level enables systems to exchange information based on standard coding. Semantic interoperability is concerned with ensuring that systems to share the same data meaning. Finally, pragmatic interoperability ensures that systems understand the message intention so that the result is within common expectations. Despite the various levels, solutions for interoperability among systems focus on a specific layer. The absence of a pragmatic interoperability model hinders transparent communication among systems because the mandatory information to interoperate is not explicit. The pragmatic level requires the semantic level that, in turn, requires the syntactic level. In addition to the need to interoperate heterogeneous systems, current technologies evidence the challenges of storing, processing, and making available the data generated by this communication. Cloud Computing aims to fulfill some of these requirements. Cloud Computing is a new paradigm that enables access to a ubiquitous network of applications, platforms, and hardware as services. These services are organized in levels, and they are accessed with a pay-per-use policy. Software as a Service (SaaS), Platform as a Service (PaaS), Infrastructure as a Service (IaaS), and Data as a Service (DaaS) are examples of cloud services. Therefore, this work presents a Conceptual frAmework for Pragmatic InTeroperAbiLity (CAPITAL). Although focused on pragmatic interoperability, the CAPITAL framework considers the syntactic and semantic levels. We performed experiments on each model to validate our CAPITAL framework. The syntactic model provides a detailed description of the syntactic interoperability of MIDAS (Middleware for DaaS and SaaS). The semantic model provides an ontology to formalize the communication between SaaS and DaaS. This ontology assists the semantic interoperability of MIDAS. The CAPITAL framework describes the model for pragmatic interoperability. We perform three studies to evaluate our CAPITAL framework. In the first study, we simulated the CAPITAL framework in four distinct scenarios that aim to provide a modeling and coding guide. The second study is a controlled experiment that investigates whether our framework eases to understand the concept and interpret scenarios with pragmatic interoperability. In the third study, we incorporated our framework into MIDAS as a proof of concept to discuss and present a middleware version for pragmatic interoperability. The three studies suggest that the CAPITAL framework positively influences the understanding, modeling, and standardization of scenarios with pragmatic interoperability. Our findings evidence that models for syntactic, semantic, and pragmatic interoperability describe mandatory elements to provide transparent communication.
MEMBROS DA BANCA:
Presidente - 1232218 - DANIELA BARREIRO CLARO
Interno - 4769482 - IVAN DO CARMO MACHADO
Interno - 1678446 - LAIS DO NASCIMENTO SALVADOR
Externo à Instituição - ELISA YUMI NAKAGAWA - USP
Externo à Instituição - FRANK AUGUSTO SIQUEIRA