187,584 research outputs found
CODAS methods for multiple attribute group decision making with interval-valued bipolar uncertain linguistic information and their application to risk assessment of Chinese enterprises’ overseas mergers and acquisitions
Bipolar fuzzy set theory has been successfully applied in some
areas, but there are situations in real life which can’t be represented by bipolar fuzzy sets. However, all the existing approaches
are unsuitable to describe the positive and negative membership
degree an element to an uncertain linguistic label to have an
interval value, which can reflect the decision maker’s confidence
level when they are making an evaluation. In order to overcome
this limit, we propose the definition of interval-valued bipolar
uncertain linguistic sets (IVBULSs) to solve this problem based on
the bipolar fuzzy sets and uncertain linguistic information processing models. In this paper, we extend the traditional information aggregating operators to interval-valued bipolar uncertain
linguistic sets (IVBULSs) and propose some IVBUL aggregating
operators. Then, we extend the CODAS method to solve multiple
attribute group decision making (MAGDM) issues with interval-valued bipolar uncertain linguistic numbers (IVBULNs) based on
these operators. An example for risk assessment of Chinese enterprises’ overseas mergers and acquisitions (M&As) is given to illustrate the proposed methodology
Neuro-fuzzy knowledge processing in intelligent learning environments for improved student diagnosis
In this paper, a neural network implementation for a fuzzy logic-based model of the diagnostic process is proposed as a means to achieve accurate student diagnosis and updates of the student model in Intelligent Learning Environments. The neuro-fuzzy synergy allows the diagnostic model to some extent "imitate" teachers in diagnosing students' characteristics, and equips the intelligent learning environment with reasoning capabilities that can be further used to drive pedagogical decisions depending on the student learning style. The neuro-fuzzy implementation helps to encode both structured and non-structured teachers' knowledge: when teachers' reasoning is available and well defined, it can be encoded in the form of fuzzy rules; when teachers' reasoning is not well defined but is available through practical examples illustrating their experience, then the networks can be trained to represent this experience. The proposed approach has been tested in diagnosing aspects of student's learning style in a discovery-learning environment that aims to help students to construct the concepts of vectors in physics and mathematics. The diagnosis outcomes of the model have been compared against the recommendations of a group of five experienced teachers, and the results produced by two alternative soft computing methods. The results of our pilot study show that the neuro-fuzzy model successfully manages the inherent uncertainty of the diagnostic process; especially for marginal cases, i.e. where it is very difficult, even for human tutors, to diagnose and accurately evaluate students by directly synthesizing subjective and, some times, conflicting judgments
Applying Theories in Language Programs
Selected Topics in Applied Linguistics: How to Choose a Theory. I offer a critical exploration of some of the conditions involved in Instructed Second Language Acquisition (ISLA), as well as of the paradoxical approaches in the theoretical questions, methods, categories, and perspectives of ISLA.
The discussion proceeds with a very short overview of prevalent theories of ISLA generally. Then I add a contrastive look in more depth at only two “theories” and their possible applications in language programs. I emphasize some of the discussions in our profession concerning processing instruction, e.g. (VanPatten "Processing Instruction") or VanPatten ("Why Explicit Knowledge Cannot Become Implicit Knowledge" ), and the multiliteracies framework, e.g. (Paesani, Allen and Dupuy). I conclude with an invitation to a set of questions we might pose to any theory, framework, or approach as we consider its efficacy and applications for our own specific contexts
Data, problems, heuristics and results in cognitive metaphor research
Cognitive metaphor research is characterised by the diversity of rival theories. Starting from this observation, the paper focuses on the problem of how the unity and diversity of cognitive theories of metaphor can be accounted for. The first part of the paper outlines a suitable metascientific approach which emerges as a modification of B. von Eckardt’s notion of research framework. In the second part, by the help of this approach, some aspects of the sophisticated relationship between Lakoff and Johnson’s, Glucksberg’s, and Gentner’s theories are discussed. The main finding is that the data, the problems, the heuristics and the hypotheses which have been partly shaped by the rivals contribute to the development of the particular theories to a considerable extent
Intervention for mixed receptive-expressive language impairment : a review
Children with receptive-expressive language impairment (RELI), also referred to as 'receptive language disorder' or 'mixed receptive-expressive disorder',2 form a subset of those with speech, language, and communication needs who commonly have problems understanding both spoken and written language; they have particular difficulties in comprehending vocabulary and grammar and inferring meaning. They will have problems with expressive language and some will also have difficulties in pragmatics, i.e. the use of language in social contexts
Auditory and speech processing in specific language impairment (SLI) and dyslexia
This thesis investigates auditory and speech processing in Specific Language
Impairment (SLI) and dyslexia. One influential theory of SLI and dyslexia postulates
that both SLI and dyslexia stem from similar underlying sensory deficit that impacts
speech perception and phonological development leading to oral language and literacy
deficits. Previous studies, however, have shown that these underlying sensory deficits
exist in only a subgroup of language impaired individuals, and the exact nature of these
deficits is still largely unknown.
The present thesis investigates three aspects of auditory-phonetic interface: 1) The
weighting of acoustic cues to phonetic voicing contrast 2) the preattentive and attentive
discrimination of speech and non-linguistic stimuli and 3) the formation of auditory
memory traces for speech and non-linguistic stimuli in young adults with SLI and
dyslexia. This thesis focuses on looking at both individial and group-level data of
auditory and speech processing and their relationship with higher-level language
measures. The groups of people with SLI and dyslexia who participated were aged
between 14 and 25 and their performance was compared to a group of controls matched
on chronological age, IQ, gender and handedness.
Investigations revealed a complex pattern of behaviour. The results showed that
individuals with SLI or dyslexia are not poor at discriminating sounds (whether speech
or non-speech). However, in all experiments, there was more variation and more outliers
in the SLI group indicating that auditory deficits may occur in a small subgroup of the
SLI population. Moreover, investigations of the exact nature of the input-processing
deficit revealed that some individuals with SLI have less categorical representations for
speech sounds and that they weight the acoustic cues to phonemic identity differently
from controls and dyslexics
Computational Sociolinguistics: A Survey
Language is a social phenomenon and variation is inherent to its social
nature. Recently, there has been a surge of interest within the computational
linguistics (CL) community in the social dimension of language. In this article
we present a survey of the emerging field of "Computational Sociolinguistics"
that reflects this increased interest. We aim to provide a comprehensive
overview of CL research on sociolinguistic themes, featuring topics such as the
relation between language and social identity, language use in social
interaction and multilingual communication. Moreover, we demonstrate the
potential for synergy between the research communities involved, by showing how
the large-scale data-driven methods that are widely used in CL can complement
existing sociolinguistic studies, and how sociolinguistics can inform and
challenge the methods and assumptions employed in CL studies. We hope to convey
the possible benefits of a closer collaboration between the two communities and
conclude with a discussion of open challenges.Comment: To appear in Computational Linguistics. Accepted for publication:
18th February, 201
The development of subordinate clauses in German and Swedish as L2s: a theoretical and methodological comparison
In this article, we aim to contribute to the debate about the use of subordination as a measure of language proficiency. We compare two theories of SLA—specifically, processability theory (PT; Pienemann, 1998) and dynamic systems theory (de Bot, Lowie, & Verspoor, 2007)—and, more particularly, their addressing of the development of subordinate clauses. Although DST uses measures from the complexity, accuracy, and fluency (CAF) research tradition (see Housen & Kuiken, 2009), PT uses the emergence criterion to describe language development. We will focus on the development of subordinate clauses and compare how subordination as such is acquired and how the processing procedures related to a specific subordinate clause word order is acquired in the interlanguage (IL) of second language German and Swedish learners. The
learners’ language use shows that the use of subordination (as measured by a subordination ratio) fluctuates extensively. From the beginning of data collection, all learners use subordinate clauses, but their use of subordinate clauses does not increase linearly over time, which is expected by DST. When focusing on processability and the emergence of subordinate clause word order, however, a clear linear developmental sequence can be observed, revealing a clear difference between the nonacquisition and the acquisition of the subordinate clause word order rules. Our learner data additionally reveal a different behavior regarding lexical and auxiliary or modal verbs
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