Which is the one implemented in liblinear and used in this thesis, is the one- vs- the-rest strategy proposed in (crammer and singer, 2002) in this strategy, a single classifier is trained per class, using the examples of that class as the positive instances and the remaining ones as the negative instances 122 support vector. First, the thesis explains two commonly used supervised learning algorithms, the k-nearest neighbour (k-nn) and random forest classifiers, and includes a complete proof that the k-nn classifier is universally consistent in any finite dimensional normed vector space second, the thesis introduces two. Master's thesis naive bayes classifier-based fire detection using smartphone sensors by mohammad mahdi mahdavi amjad for many years, smoke detectors have been used as the most crucial fire detection sensors although smoke detectors do their job very well, they are not perfect and may cause. In the context of classification, diversity has not been well defined, and several heuristic diversity measures have been proposed the focus of this thesis is on how to create effective ensembles in the context of classifica- tion even though several effective ensemble algorithms have been proposed, there are still several. Almost every large swedish online newspaper has disabled comments under their articles due to problems with hateful and offensive comments in this master's thesis, we explore different ways to detect toxic comments using ma- chine learning we carry out a comparison of classification algorithms and. Svm classification and analysis of margin distance on microarray data a thesis presented to the graduate faculty of the university of akron in partial fulfillment of the requirements for the degree master of science ameer basha shaik abdul may, 2011. Phd thesis submitted at the university of copenhagen faculty of science title: high dimensional multiclass classification with applications to cancer diagnosis martin vincent may 31, 2013.
Objective of the study was to describe software testing tools and the corresponding use the thesis contains examples of software testing tools usage the study was conducted as a literature study, with focus on current software testing practices and quality assurance standards in the paper a tool classifier was employed,. This thesis summarizes four of my research projects in machine learning one of them is on a theoretical challenge of defining and exploring complexity measures for data sets the others are about new and improved classification algorithms we first investigate the role of data complexity in the context of binary classification. Algorithm, adaboost in chapter 5, text classification using the extended tied mixture model is described we can often assume a potential sub-category for a given category, for example, the “sports” category could have the sub-categories “baseball” and “soccer” i describe such categorization in this thesis. Onesfole kurama similarity based classification methods with different aggregation operators acta universitatis lappeenrantaensis 773 thesis for the degree of doctor of science (technology) to be presented with due permission for public examination and criticism in the silva.
This thesis concerns the tasks of image re-ranking and image classification these tasks are solved by learning statistical models given a representation of visual content of the image and a similarity measure between images here we aim to improve performance of the tasks by extending the bag-of-words. Classifiers, svms have been used in face recognition , speaker identification [ 69] and text categorisation , to name a few as regressors, they have been used in control systems   and communications  , amongst others in this thesis i introduce a new and novel form of svm known as regression with.
As kernels on the other hand, linear kernel is computationally inexpensive, however it gives poorer results in most of the cases another contribution of this thesis is a method for improving the performance of computationally inexpensive classifiers like linear svm for this purpose, we explore the utility of sub- categories,. Automatic music genre classification chapter 6: conclusions and future work figure 12: organization and structure of the phd thesis 17 organization of the thesis this dissertation is organized as shown in figure 12 we start with a theoret- ical introduction on musical genres in chapter 2 we discuss why they were. This thesis consists of two parts the first part reviews the general structure of a pat- tern recognition system and, in particular, various statistical and neural classification algorithms the presentation then focuses on subspace classification methods that form a family of semiparametric methods several improvements on the. Improving satellite image classification by amit bharti thesis submitted to the international institute for geo-information science and earth observation in partial fulfilment of the requirements for the degree of master of science in geoinformatics thesis assessment board: thesis supervisors: chairman: prof dr alfred.
This thesis explores meta-techniques which are applicable to most classifier learning algorithms, with the aim to advance the classification of imbalanced data boosting is a powerful meta-technique to learn an ensemble of weak models with a promise of improving the classification accuracy adaboost has been taken as. Digital form that is far-reaching and expanding this thesis addresses patent document classification problem into fifteen different categories or classes, where some classes overlap with other classes for practical reasons for the development of the classification model using machine learning techniques. The performance of a classifier is affected by a number of factors including classifier type, the input features and the desired output this thesis examines the impact of feature selection and classification problem division on classification accuracy and complexity proper feature selection can reduce classifier size and. Final thesis bachelor's / master's degree (f/m) we offer candidates (m/f) the chance to work on a practice-oriented topic that is based on a real project the topic will be defined by one of the following divisions: customer projects, r&d, testing, design/engineering or manufacture and will be coordinated jointly between you.
Image classification: a study in age-related macular degeneration screening thesis submitted in accordance with the requirements of the university of liverpool for the degree of doctor in philosophy by mohd hanafi ahmad hijazi july 2012. This is the problem of classification: to assign a new object to one of a set of classes (in this case apples or pears) which are known beforehand the classifier which should perform this classification operation (or which assigns to each input object an output label), is based on a set of example objects this thesis will not.
This is to certify that the work in the thesis entitled classification of senti- ment analysis on tweets using machine learning techniques by shiv- araju kethavath is a record of an original research work carried out by him un- der my supervision and guidance in partial fulfillment of the requirements for the. Prosody, or intonation, is a critically important component of spoken communication the automatic extraction of prosodic information is necessary for machines to process speech with human levels of proficiency in this thesis we describe work on the automatic detection and classification of prosodic events – specifically.
U n i v e r i t y of tartu faculty of mathemathics and computer science institute of computer science information technology specialty martin mäe classification of email messages bachelor's thesis (6 eap) supervisor: tõnu tamme author: ““ june 2011. Issn 1213-2365 structural classifier for gender recognition ondřej fišar bc [email protected] ctu–cmp–2011–09 august 15, 2011 available at http ://cmpfelkcvutcz/~fisarond/thesispdf thesis advisor: ing vojtěch franc, phd the authors were supported by ec projects fp7-ict-247525 humavips and. In this thesis, we mitigate mis- classifications and their effects by adapting the behavior of the classifier on sam- ples with high potential for misclassification through the use of robust classification schemes that combine context and rejection we thus combine the advantages of using contextual priors in classification with. We also make use of a large search engine log to provide a comprehensive topic specific analysis of search engine queries finally we study the problem of ranking the classes using some new features derived from the class the contribution of this thesis is the investigation of classification-based search in terms of ranking.