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Fuzzy representation of LQD. (a) 1000 instances of an interval-valued database. (b) Fuzzy (possibilistic) representation of the mean value of the data in the left part. α-cuts of this fuzzy set are bootstrap-based confidence intervals of the interval valued data; that is, they are the smallest intervals containing at least a fraction 1-α of the data.
Source publication
When selecting relevant inputs in modeling problems with low quality data, the ranking of the most informative inputs is also uncertain. In this paper, this issue is addressed through a new procedure that allows the extending of different crisp feature selection algorithms to vague data. The partial knowledge about the ordinal of each feature is mo...
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Citations
... The aim of MOOCs is to offer high-quality products and services to the general public (Patru and Balaji, 2016) and their philosophy is based on the concept of Open Learning which is free diffusion of knowledge without economic, demographic or geographical constraints (Otero et al., 2014;Sofos et al., 2015;Xu and Yang, 2015). It aims at facilitating accessibility, removing obstacles and difficulties, adopting new ways of acquiring and sharing knowledge (Patru and Balaji, 2016). ...
MOOCs have fostered many expectations and have been recognised as an innovative educational trend. In order to document experiences and views on MOOCs as well as beliefs about future developments, we conducted a research with population of secondary education ICT teachers of Karditsa, Greece. Respondents, though not widely informed, regard MOOCs as an opportunity rather than a risk to their profession, while they believe that they will not bring about significant changes to secondary education. They recognise that MOOCs can make a major contribution to their professional development and they use them as tools in increasing their knowledge and achieving their professional goals. They are highly satisfied with MOOCs and they think that the reasons for high drop-out rates are not related to disadvantages or weaknesses. Although they do recognise online forms of education as equal to traditional ones, they consider direct personal contact of great importance.
... The aim of MOOCs is to offer high-quality products and services to the general public (Patru and Balaji, 2016) and their philosophy is based on the concept of Open Learning which is free diffusion of knowledge without economic, demographic or geographical constraints (Otero et al., 2014;Sofos et al., 2015;Xu and Yang, 2015). It aims at facilitating accessibility, removing obstacles and difficulties, adopting new ways of acquiring and sharing knowledge (Patru and Balaji, 2016). ...
MOOCs have fostered many expectations and have been recognised as an innovative educational trend. In order to document experiences and views on MOOCs as well as beliefs about future developments, we conducted a research with population of secondary education ICT teachers of Karditsa, Greece. Respondents, though not widely informed, regard MOOCs as an opportunity rather than a risk to their profession, while they believe that they will not bring about significant changes to secondary education. They recognise that MOOCs can make a major contribution to their professional development and they use them as tools in increasing their knowledge and achieving their professional goals. They are highly satisfied with MOOCs and they think that the reasons for high drop-out rates are not related to disadvantages or weaknesses. Although they do recognise online forms of education as equal to traditional ones, they consider direct personal contact of great importance.
A method is proposed for predicting the pass rate of a Computer Science course. Input data comprises different software metrics that are evaluated on a set of programs, comprising students’ answers to a list of computing challenges proposed by the course instructor. Different kinds of uncertainty are accepted, including missing answers and multiple responses to the same challenge. The most informative metrics are selected according to an extension to vague data of the observed Fisher information. The proposed method was tested on experimental data collected during two years at Oviedo University. Yearly changes in the pass rate of two groups were accurately predicted on the basis of 7 software metrics. 73 volunteer students and 1500 source files were involved in the experimentation.
