5,388 research outputs found
Automatic case acquisition from texts for process-oriented case-based reasoning
This paper introduces a method for the automatic acquisition of a rich case
representation from free text for process-oriented case-based reasoning. Case
engineering is among the most complicated and costly tasks in implementing a
case-based reasoning system. This is especially so for process-oriented
case-based reasoning, where more expressive case representations are generally
used and, in our opinion, actually required for satisfactory case adaptation.
In this context, the ability to acquire cases automatically from procedural
texts is a major step forward in order to reason on processes. We therefore
detail a methodology that makes case acquisition from processes described as
free text possible, with special attention given to assembly instruction texts.
This methodology extends the techniques we used to extract actions from cooking
recipes. We argue that techniques taken from natural language processing are
required for this task, and that they give satisfactory results. An evaluation
based on our implemented prototype extracting workflows from recipe texts is
provided.Comment: Sous presse, publication pr\'evue en 201
Using Semantic Web Services for AI-Based Research in Industry 4.0
The transition to Industry 4.0 requires smart manufacturing systems that are
easily configurable and provide a high level of flexibility during
manufacturing in order to achieve mass customization or to support cloud
manufacturing. To realize this, Cyber-Physical Systems (CPSs) combined with
Artificial Intelligence (AI) methods find their way into manufacturing shop
floors. For using AI methods in the context of Industry 4.0, semantic web
services are indispensable to provide a reasonable abstraction of the
underlying manufacturing capabilities. In this paper, we present semantic web
services for AI-based research in Industry 4.0. Therefore, we developed more
than 300 semantic web services for a physical simulation factory based on Web
Ontology Language for Web Services (OWL-S) and Web Service Modeling Ontology
(WSMO) and linked them to an already existing domain ontology for intelligent
manufacturing control. Suitable for the requirements of CPS environments, our
pre- and postconditions are verified in near real-time by invoking other
semantic web services in contrast to complex reasoning within the knowledge
base. Finally, we evaluate our implementation by executing a cyber-physical
workflow composed of semantic web services using a workflow management system.Comment: Submitted to ISWC 202
Knowledge-Intensive Processes: Characteristics, Requirements and Analysis of Contemporary Approaches
Engineering of knowledge-intensive processes (KiPs) is far from being mastered, since they are genuinely knowledge- and data-centric, and require substantial flexibility, at both design- and run-time. In this work, starting from a scientific literature analysis in the area of KiPs and from three real-world domains and application scenarios, we provide a precise characterization of KiPs. Furthermore, we devise some general requirements related to KiPs management and execution. Such requirements contribute to the definition of an evaluation framework to assess current system support for KiPs. To this end, we present a critical analysis on a number of existing process-oriented approaches by discussing their efficacy against the requirements
Elastic Business Process Management: State of the Art and Open Challenges for BPM in the Cloud
With the advent of cloud computing, organizations are nowadays able to react
rapidly to changing demands for computational resources. Not only individual
applications can be hosted on virtual cloud infrastructures, but also complete
business processes. This allows the realization of so-called elastic processes,
i.e., processes which are carried out using elastic cloud resources. Despite
the manifold benefits of elastic processes, there is still a lack of solutions
supporting them.
In this paper, we identify the state of the art of elastic Business Process
Management with a focus on infrastructural challenges. We conceptualize an
architecture for an elastic Business Process Management System and discuss
existing work on scheduling, resource allocation, monitoring, decentralized
coordination, and state management for elastic processes. Furthermore, we
present two representative elastic Business Process Management Systems which
are intended to counter these challenges. Based on our findings, we identify
open issues and outline possible research directions for the realization of
elastic processes and elastic Business Process Management.Comment: Please cite as: S. Schulte, C. Janiesch, S. Venugopal, I. Weber, and
P. Hoenisch (2015). Elastic Business Process Management: State of the Art and
Open Challenges for BPM in the Cloud. Future Generation Computer Systems,
Volume NN, Number N, NN-NN., http://dx.doi.org/10.1016/j.future.2014.09.00
Workflow Similarity Analysis
As distributed systems have emerged they become widely adopted by scientific communities and various commercial vendors. Some of them settled architectural models that today are broadly known as grid computing and service oriented architecture. Both of them are base on service and workflow paradigms as a single shareable unit of work. Unfortunately, an increasing number of workflows being brought out has raised a problem of their distribution and management, e.g., search repositories and find workflows similar to the given one in order to increase the efficiency of calculations. In this paper a similar workflow search algorithm based on semantic type comparison has been proposed. In order to evaluate the algorithm usability and precision, an experiment has been conducted that regarded workflow extraction from Feta repository. The entire process involved reasoning based on myGrid ontologies. The received results were compared to results obtained from other algorithm, based on an analysis of the names of the workflow components using the TD-IDF weight. The described experiment shows that semantics and ontology play significant role in service and workflow representation
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