نتایج جستجو برای: supervised classification

تعداد نتایج: 518655  

Journal: :Statistics and Computing 2013
Jukka Corander Yaqiong Cui Timo Koski Jukka Sirén

A general inductive Bayesian classification framework is introduced for data from multiple finite alphabets using predictive representations based on random urn models and generalized exchangeability. We develop a novel principle of generative supervised and semi-supervised probabilistic classification based on marginalizing simultaneous predictive classification probabilities for all test item...

2015
Stamatis Karlos Nikos Fazakis Sotiris B. Kotsiantis Kyriakos N. Sgarbas

Semi-supervised classification methods are based on the use of unlabeled data in combination with a smaller set of labeled examples, in order to increase the classification rate compared with the supervised methods, in which the total training is executed only by the usage of labeled data. In this work, a self-train Logitboost algorithm is presented. The self-train process improves the results ...

Journal: :Neurocomputing 2018
Vasileios Mygdalis Alexandros Iosifidis Anastasios Tefas Ioannis Pitas

In this paper, an One-Class Classification method, namely the Semi-Supervised Subclass Support Vector Data Description, is presented. The proposed method extends Support Vector Data Description by two means, i.e. by exploiting global class information expressed by the class data variance and local neighborhood information between all available (labeled and unlabeled), following the smoothness a...

2010
Shoushan Li Chu-Ren Huang Guodong Zhou Sophia Yat Mei Lee

In this paper, we adopt two views, personal and impersonal views, and systematically employ them in both supervised and semi-supervised sentiment classification. Here, personal views consist of those sentences which directly express speaker’s feeling and preference towards a target object while impersonal views focus on statements towards a target object for evaluation. To obtain them, an unsup...

Journal: :CoRR 2017
Shahira Shaaban Azab Hesham Ahmed Hefny

This Paper represents a literature review of Swarm intelligence algorithm in the area of semi-supervised classification. There are many research papers for applying swarm intelligence algorithms in the area of machine learning. Some algorithms of SI are applied in the area of ML either solely or hybrid with other ML algorithms. SI algorithms are also used for tuning parameters of ML algorithm, ...

Journal: :Pattern Recognition 2012
Mohammad H. Rohban Hamid R. Rabiee

Graph based methods are among the most active and applicable approaches studied in semi-supervised learning. The problem of neighborhood graph construction for these methods is addressed in this paper. Neighborhood graph construction plays a key role in the quality of the classification in graph based methods. Several unsupervised graph construction methods have been proposed that have addresse...

2013
Haibin Mei Minghua Zhang

How to filtering false positives is a fundamental problem of IDS. Constructing alert classification model is one of efficient methods. However, the high cost of preparing training data and classification feature selection are key points in the problem. This paper gives a semi-supervised alert classification model which makes use of the power of semisupervised learning. Moreover, four classifica...

Journal: :JORS 2013
Kenneth Kennedy Brian Mac Namee Sarah Jane Delany

In credit scoring, low-default portfolios are those for which very little default history exists. This makes it problematic for financial institutions to estimate a reliable probability of a customer defaulting on a loan. Banking regulation (Basel II Capital Accord), and best practice, however, necessitate an accurate and valid estimate of the probability of default. In this article the suitabi...

2013
Rachita Sharma Sanjay Kumar Dubey

This paper describes the time variant changes in satellite images using Self Organizing Feature Map (SOFM) technique associated with Artificial Neural Network. In this paper, we take a satellite image and find the time variant changes using above technique with the help of MATLAB. This paper reviews remotely sensed data analysis with neural networks. First, we present an overview of the main co...

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