Hypergraphs can be built from a formal context, and conversely formal contexts can be derived from a hypergraph. Establishing such links allows exploiting morphological operators developed in one framework to derive new operators in the other one. As an example, the combination of derivation operators on formal concepts leads to closing operators on hypergraphs which are not the composition of ...

We relate two formerly independent areas: Formal concept analysis and logic of domains. We will establish a correspondene between contextual attribute logic on formal contexts resp. concept lattices and a clausal logic on coherent algebraic cpos. We show how to identify the notion of formal concept in the domain theoretic setting. In particular, we show that a special instance of the resolution...

We relate two formerly independent areas: Formal concept analysis and logic of domains. We will establish a correspondene between contextual attribute logic on formal contexts resp. concept lattices and a clausal logic on coherent algebraic cpos. We show how to identify the notion of formal concept in the domain theoretic setting. In particular, we show that a special instance of the resolution...

Rule acquisition is one of the main purposes in the analysis of formal decision contexts. Up to now, there have been several types of rules in formal decision contexts such as decision rules, decision implications, and granular rules, which can be viewed as ∧-rules since all of them have the following form: "if conditions 1,2,…, and m hold, then decisions hold." In order to enrich the existing ...

Many educators have attempted to implement a blog in educational contexts to enhance the communication environment among students and teachers. However, it is uncertain as to why traditional computer-mediated communication (CMC) applications should be replaced with blogs. It is time to comprehensively explore the effects of educational blogs by considering the CMC tools. This paper reviews prio...

Adaptive help-seeking as a learning strategy can influence learners' outcomes. Learners in online environments need more self-regulation and especially strategies. A systematic review was conducted to explore strategies environments. search on Educational Research Information Center (ERIC) PsycInfo yielded 36 peer-reviewed articles that met the inclusion criteria for this study. Karabenick Knap...

Our paper introduces well-known methods for compressing formal context and focuses on concept lattices and attribute implication base changes of compressed formal contexts. In this paper Singular Value Decomposition and Non-negative Matrix Factorisation methods for compressing formal context are discussed. Computing concept lattices from reduced formal contexts results in a smaller number of co...

The main focus of this work is on didactic planning (in high schools) with a special emphasis on the following topics: the use of problem-solving and social media in a course centered on scientific knowledge, participatory and collaborative activities, on and off line, the paradigms of collective intelligence (Levy, 1994), and connective intelligence (Siemens, 2005, 2006) and technical skills. ...