scholarly journals Categorisation of Tweets Using Ensemble Classification Methods

2018 ◽  
Vol 7 (3.12) ◽  
pp. 722 ◽  
Author(s):  
S Mohanavalli ◽  
S Karthika ◽  
Srividya . ◽  
K R.Uthayan ◽  
N Sandya

Twitter is a micro-blogging site that facilitates users to exchange short messages. Twitter is predominantly used in fields like business, healthcare, education and nation security. Twitter is being used by a large number of users for updating real time information and sentiment expression. The objective of this paper is to automate the classification of tweets into particular category using various machine learning algorithms like naïve bayes, SVM, and linear regression model. The proposed ensemble model aims to improve performance metrics of these algorithms. A comparative study of the algorithms used for tweet classification is done and results are discussed in the paper.  

Author(s):  
Vicky Manthou ◽  
Constantinos J. Stefanou ◽  
Kalliopi Tigka

ERP systems, supporting and integrating all business processes across functions and offering real time information necessary for taking actions and making decisions, have prevailed in most enterprises worldwide. The costs involved in ERP implementations may be huge and must be justified by the outcomes. However, extant research has reported mixed and in some cases controversial results. In this chapter, certain important dimensions of ERP systems and of business performance are discussed. The chapter has an educational focus and aims at providing an exploration of ERP system's impact on certain business performance dimensions, informing thus scholars, practitioners and students of the issues involved and the areas they should pay attention when considering ERP implementations. Following an extensive literature review, a classification of diverse studies according to their research focus is provided, which reveals the range of business performance dimensions and can help researchers in their future projects.


Author(s):  
Vicky Manthou ◽  
Constantinos J. Stefanou ◽  
Kalliopi Tigka

ERP systems, supporting and integrating all business processes across functions and offering real time information necessary for taking actions and making decisions, have prevailed in most enterprises worldwide. The costs involved in ERP implementations may be huge and must be justified by the outcomes. However, extant research has reported mixed and in some cases controversial results. In this chapter, certain important dimensions of ERP systems and of business performance are discussed. The chapter has an educational focus and aims at providing an exploration of ERP system's impact on certain business performance dimensions, informing thus scholars, practitioners and students of the issues involved and the areas they should pay attention when considering ERP implementations. Following an extensive literature review, a classification of diverse studies according to their research focus is provided, which reveals the range of business performance dimensions and can help researchers in their future projects.


2021 ◽  
Author(s):  
Raz Mohammad Sahar ◽  
T. Srivinasa Rao ◽  
S. Anuradha ◽  
B. Srinivasa Rao

Gender classification is amongst the significant problems in the area of signal processing; previously, the problem was handled using different image classification methods, which mainly involve data extraction from a collection of images. Nevertheless, researchers over the globe have recently shown interest in gender classification using voiced features. The classification of gender goes beyond just the frequency and pitch of a human voice, according to a critical study of some of the human vocal attributes. Feature selection, which is from a technical point of view termed dimensionality reduction, is amongst the difficult problems encountered in machine learning. A similar obstacle is encountered when choosing gender particular features—which presents an analytical purpose in analyzing a human’s gender. This work will examine the effectiveness and importance of classification algorithms to the classification of gender via voice problems. Audial data, for example, pitch, frequency, etc., help in determining gender. Machine learning offers encouraging outcomes for classification problems in all domains. An area’s algorithms can be evaluated using performance metrics. This paper evaluates five different classification Algorithms of machine learning based on the classification of gender from audial data. The plan is to recognize gender using five different algorithms: Gradient Boosting, Decision Trees, Random Forest, Neural network, and Support Vector Machine. The major parameter in assessing any algorithm must be performance. Misclassifying rate ratio should not be more in classifying problems. In business markets, the location and gender of people are essentially related to AdSense. This research aims at comparing various machine learning algorithms in order to find the most suitable fitting for gender identification in audial data.


Author(s):  
Sanjiban Sekhar Roy ◽  
Pulkit Kulshrestha ◽  
Pijush Samui

Drought is a condition of land in which the ground water faces a severe shortage. This condition affects the survival of plants and animals. Drought can impact ecosystem and agricultural productivity, severely. Hence, the economy also gets affected by this situation. This paper proposes Deep Belief Network (DBN) learning technique, which is one of the state of the art machine learning algorithms. This proposed work uses DBN, for classification of drought and non-drought images. Also, k nearest neighbour (kNN) and random forest learning methods have been proposed for the classification of the same drought images. The performance of the Deep Belief Network(DBN) has been compared with k nearest neighbour (kNN) and random forest. The data set has been split into 80:20, 70:30 and 60:40 as train and test. Finally, the effectiveness of the three proposed models have been measured by various performance metrics.


F1000Research ◽  
2017 ◽  
Vol 5 ◽  
pp. 2588 ◽  
Author(s):  
Thomas Quinn ◽  
Daniel Tylee ◽  
Stephen Glatt

Machine learning plays a major role in many scientific investigations. However, non-expert programmers may struggle to implement the elaborate pipelines necessary to build highly accurate and generalizable models. We introduce exprso, a new R package that is an intuitive machine learning suite designed specifically for non-expert programmers. Built initially for the classification of high-dimensional data, exprso uses an object-oriented framework to encapsulate a number of common analytical methods into a series of interchangeable modules. This includes modules for feature selection, classification, high-throughput parameter grid-searching, elaborate cross-validation schemes (e.g., Monte Carlo and nested cross-validation), ensemble classification, and prediction. In addition, exprso also supports multi-class classification (through the 1-vs-all generalization of binary classifiers) and the prediction of continuous outcomes.


F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 2588 ◽  
Author(s):  
Thomas Quinn ◽  
Daniel Tylee ◽  
Stephen Glatt

Machine learning plays a major role in many scientific investigations. However, non-expert programmers may struggle to implement the elaborate pipelines necessary to build highly accurate and generalizable models. We introduce here a new R package, exprso, as an intuitive machine learning suite designed specifically for non-expert programmers. Built primarily for the classification of high-dimensional data, exprso uses an object-oriented framework to encapsulate a number of common analytical methods into a series of interchangeable modules. This includes modules for feature selection, classification, high-throughput parameter grid-searching, elaborate cross-validation schemes (e.g., Monte Carlo and nested cross-validation), ensemble classification, and prediction. In addition, exprso provides native support for multi-class classification through the 1-vs-all generalization of binary classifiers. In contrast to other machine learning suites, we have prioritized simplicity of use over expansiveness when designing exprso.


2019 ◽  
Vol 6 (4) ◽  
pp. 12
Author(s):  
ABUBAKAR UMAR ◽  
A. BASHIR SULAIMON ◽  
BASHIR ABDULLAHI MUHAMMAD ◽  
S. ADEBAYO OLAWALE ◽  
◽  
...  

Sign in / Sign up

Export Citation Format

Share Document