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Application of Fuzzy Mathematics to Speech-to-Text Conversion by Elimination of Paralinguistic Content
Lakra, Sachin, Prasad, T. V., Sharma, Deepak Kumar, Atrey, Shree Harsh, Sharma, Anubhav Kumar
For the past few decades, man has been trying to create an intelligent computer which can talk and respond like he can. The task of creating a system that can talk like a human being is the primary objective of Automatic Speech Recognition. Various Speech Recognition techniques have been developed in theory and have been applied in practice. This paper discusses the problems that have been encountered in developing Speech Recognition, the techniques that have been applied to automate the task, and a representation of the core problems of present day Speech Recognition by using Fuzzy Mathematics.
Applicability of Crisp and Fuzzy Logic in Intelligent Response Generation
Prasad, T. V., Lakra, Sachin, Ramakrishna, G.
This paper discusses the merits and demerits of crisp logic and fuzzy logic with respect to their applicability in intelligent response generation by a human being and by a robot. Intelligent systems must have the capability of taking decisions that are wise and handle situations intelligently. A direct relationship exists between the level of perfection in handling a situation and the level of completeness of the available knowledge or information or data required to handle the situation. The paper concludes that the use of crisp logic with complete knowledge leads to perfection in handling situations whereas fuzzy logic can handle situations imperfectly only. However, in the light of availability of incomplete knowledge fuzzy theory is more effective but may be disadvantageous as compared to crisp logic.
Speech Signal Filters based on Soft Computing Techniques: A Comparison
Lakra, Sachin, Prasad, T. V., Ramakrishna, G.
Speech Signal filtering is an active research area in speech processing and soft computing techniques are now being employed for the process. Various approaches have been used in the past for filtering speech signals. One approach to filter noise is a linear filter called a band pass filter which is unsuitable for filtering speech signals since the number of possible frequencies in the human audible range at which audio signals occur in the real world is very large. Besides this, a band pass filter cannot handle fuzzy rules and fuzzy values representing ranges of frequencies along with not being able to handle them in a robust manner by handling imprecision and time variance. More robust, more effective and more efficient techniques from the realm of soft computing are being applied to solve fundamental problems. Some instances of such application include co-active neurofuzzy inference systems for the XOR problem [11], fuzzy mathematics for paralinguistic content elimination from a speech signal [10] and hybrid techniques for speech signal filtering.
Alpha/Beta Divergences and Tweedie Models
Yilmaz, Y. Kenan, Cemgil, A. Taylan
We describe the underlying probabilistic interpretation of alpha and beta divergences. We first show that beta divergences are inherently tied to Tweedie distributions, a particular type of exponential family, known as exponential dispersion models. Starting from the variance function of a Tweedie model, we outline how to get alpha and beta divergences as special cases of Csisz\'ar's $f$ and Bregman divergences. This result directly generalizes the well-known relationship between the Gaussian distribution and least squares estimation to Tweedie models and beta divergence minimization.
Cognitive Bias for Universal Algorithmic Intelligence
Potapov, Alexey, Rodionov, Sergey, Myasnikov, Andrew, Begimov, Galymzhan
Existing theoretical universal algorithmic intelligence models are not practically realizable. More pragmatic approach to artificial general intelligence is based on cognitive architectures, which are, however, non-universal in sense that they can construct and use models of the environment only from Turing-incomplete model spaces. We believe that the way to the real AGI consists in bridging the gap between these two approaches. This is possible if one considers cognitive functions as a "cognitive bias" (priors and search heuristics) that should be incorporated into the models of universal algorithmic intelligence without violating their universality. Earlier reported results suiting this approach and its overall feasibility are discussed on the example of perception, planning, knowledge representation, attention, theory of mind, language, and some others.
Qualitative Modelling via Constraint Programming: Past, Present and Future
Kelsey, Thomas W., Kotthoff, Lars, Jefferson, Christoffer A., Linton, Stephen A., Miguel, Ian, Nightingale, Peter, Gent, Ian P.
Qualitative modelling is a technique integrating the fields of theoretical computer science, artificial intelligence and the physical and biological sciences. The aim is to be able to model the behaviour of systems without estimating parameter values and fixing the exact quantitative dynamics. Traditional applications are the study of the dynamics of physical and biological systems at a higher level of abstraction than that obtained by estimation of numerical parameter values for a fixed quantitative model. Qualitative modelling has been studied and implemented to varying degrees of sophistication in Petri nets, process calculi and constraint programming. In this paper we reflect on the strengths and weaknesses of existing frameworks, we demonstrate how recent advances in constraint programming can be leveraged to produce high quality qualitative models, and we describe the advances in theory and technology that would be needed to make constraint programming the best option for scientific investigation in the broadest sense.
Hybrid technique for effective knowledge representation & a comparative study
Tanwar, Poonam, Prasad, T. V., Datta, Dr. Kamlesh
Knowledge representation(KR) and inference mechanism are most desirable thing to make the system intelligent. System is known to an intelligent if its intelligence is equivalent to the intelligence of human being for a particular domain or general. Because of incomplete ambiguous and uncertain information the task of making intelligent system is very difficult. The objective of this paper is to present the hybrid KR technique for making the system effective & Optimistic. The requirement for (effective & optimistic) is because the system must be able to reply the answer with a confidence of some factor. This paper also presents the comparison between various hybrid KR techniques with the proposed one. .
Generalized Canonical Correlation Analysis for Disparate Data Fusion
Sun, Ming, Priebe, Carey E., Tang, Minh
Manifold matching works to identify embeddings of multiple disparate data spaces into the same low-dimensional space, where joint inference can be pursued. It is an enabling methodology for fusion and inference from multiple and massive disparate data sources. In this paper we focus on a method called Canonical Correlation Analysis (CCA) and its generalization Generalized Canonical Correlation Analysis (GCCA), which belong to the more general Reduced Rank Regression (RRR) framework. We present an efficiency investigation of CCA and GCCA under different training conditions for a particular text document classification task.
Textual Features for Programming by Example
Menon, Aditya Krishna, Tamuz, Omer, Gulwani, Sumit, Lampson, Butler, Kalai, Adam Tauman
In Programming by Example, a system attempts to infer a program from input and output examples, generally by searching for a composition of certain base functions. Performing a naive brute force search is infeasible for even mildly involved tasks. We note that the examples themselves often present clues as to which functions to compose, and how to rank the resulting programs. In text processing, which is our domain of interest, clues arise from simple textual features: for example, if parts of the input and output strings are permutations of one another, this suggests that sorting may be useful. We describe a system that learns the reliability of such clues, allowing for faster search and a principled ranking over programs. Experiments on a prototype of this system show that this learning scheme facilitates efficient inference on a range of text processing tasks.
RIO: Minimizing User Interaction in Ontology Debugging
Rodler, Patrick, Shchekotykhin, Kostyantyn, Fleiss, Philipp, Friedrich, Gerhard
Efficient ontology debugging is a cornerstone for many activities in the context of the Semantic Web, especially when automatic tools produce (parts of) ontologies such as in the field of ontology matching. The best currently known interactive debugging systems rely upon some meta information in terms of fault probabilities, which can speed up the debugging procedure in the good case, but can also have negative impact on the performance in the bad case. The problem is that assessment of the meta information is only possible a-posteriori. Consequently, as long as the actual fault is unknown, there is always some risk of suboptimal interactive diagnoses discrimination. As an alternative, one might prefer to rely on a tool which pursues a no-risk strategy. In this case, however, possibly well-chosen meta information cannot be exploited, resulting again in inefficient debugging actions. In this work we present a reinforcement learning strategy that continuously adapts its behavior depending on the performance achieved and minimizes the risk of using low-quality meta information. Therefore, this method is suitable for application scenarios where reliable a-priori fault estimates are difficult to obtain. Using problematic ontologies in the field of ontology matching, we show that the proposed risk-aware query strategy outperforms both active learning approaches and no-risk strategies on average in terms of required amount of user interaction.