Qualtras: a Tool for Qualitative Trend Representations
نویسنده
چکیده
This paper presents a tool developed to obtain qualitative trend representations from signals, Qualtras. The aim of such a type of description is to offer an understandable representation of process behavior based on the concept of qualitative episode. The tool is intended to be used as a numeric to qualitative interface for supervisory applications. The applicability of this tool is demonstrated in a monitoring application of a steam generator.
منابع مشابه
CHEM Decision Support Systems - Improved Process Operation and Safety QualTras Qualitative Trend Analysis Software A tool from eXiT-UdG - A component of the CHEM platform for process plant decision support systems
QualTras obtains information from process data and is capable of deriving and showing the qualitative process perception that expert operators could have (e.g. “the pressure dropped abruptly”). That feature makes QualTras a useful tool for supervisory tasks, such as monitoring, detection and fault diagnosis. Trends of numeric variables (e.g. measured process variables) are symbolically represen...
متن کاملIntegrating collaborative concept mapping tools with group memory and retrieval functions
The provision of shared visual representations is considered to be an important facilitator for creative processes in group working and learning scenarios. Although reusability is an inherent feature of computerised representations in general, a comparative analysis of existing tools shows clear deficits in this respect. We are convinced that reusability and thus sustainability of the results o...
متن کاملA Robust Exploratory Method for Qualitative Trend Curve Analysis against Poor Quality Data
This paper proposes a theoretical method for qualitative trend curve analysis, supposing the situation that data quality is poor and the amount of data is very large. Here the ‘trend curve’ means, for example, a sequence of monthly temperature over twelve months at a location. The paper first defines ‘qualitative’ characteristics of a trend curve in terms of isomorphic relations. Second, these ...
متن کاملQCM: A QP-Based Concept Map System
Qualitative representations have proven to be useful formalisms for capturing human mental models. As a result, qualitative modeling could become an important tool for cognitive science. Specifically, an environment in which qualitative representations can be used to explore mental models and different type of reasoning and simulations can be performed on these models can be a useful tool for c...
متن کاملپتانسیلهای محض SU(3) در مدل ورتکسهای مرکزی پهن
The potentials between static sources in various representations in SU(3) are calculated on the basis of the fat-centre-vortices model of Faber, Greensite and Olejník. At intermediate distances, potentials are in qualitative agreement with “Casimir scaling,” which says that the string tension is proportional to the quadratic operator of the representation. At large distances, screening occurs...
متن کامل