Results 21 to 30 of about 4,259 (226)

Sentiment Analysis of Customer Feedback in Online Food Ordering Services

open access: yesBusiness Systems Research, 2021
Background: E-commerce websites have been established expressly as useful online communication platforms, which is rather significant. Through them, users can easily perform online transactions such as shopping or ordering food and sharing their ...
Nguyen Bang, Nguyen Van-Ho, Ho Thanh
doaj   +1 more source

An Evaluation of the Implementation of the Europe 2020 Strategy

open access: yesStudia Ekonomiczne i Regionalne, 2021
Subject and purpose of work: A quantitative measurement of the implementation of the objectives of the Europe 2020 strategy, an assessment of the degree of implementation of the strategy objectives for the individual EU-27 countries, and a ranking of ...
Kasprzyk Beata, Wojnar Jolanta
doaj   +1 more source

Evaluating core inflation measures: A statistical inference approach

open access: yesLatin American Journal of Central Banking, 2023
We propose a framework for consistently evaluating core inflation measures via a straightforward application of sound statistical inference principles. Under this framework, inflation measures (both headline and core) are regarded as estimators tracking ...
Juan Carlos Castañeda, Rodrigo Chang
doaj   +1 more source

A Comparative Study of Melanocytic Tumours: Linking Portuguese Dogs and Cats to Human Cases. [PDF]

open access: yesVet Comp Oncol
ABSTRACT Melanocytic tumours (MT) occur in both humans and companion animals, presenting an opportunity for comparative oncology research. Thus, this study provides a comprehensive epidemiological analysis comparing MT in Portuguese dogs, cats and humans. Data were obtained from the Portuguese National Cancer Registry (RON) (2011–2021) and Vet‐OncoNet (
Alves Pinto C   +5 more
europepmc   +2 more sources

ANOVA bootstrapped principal components analysis for logistic regression

open access: yesCroatian Review of Economic, Business and Social Statistics, 2022
Principal components analysis (PCA) is often used as a dimensionality reduction technique. A small number of principal components is selected to be used in a classification or a regression model to boost accuracy.
Toleva Borislava
doaj   +1 more source

Ranking and Classification of Cryptocurrency Exchanges Using the Methods of a Multidimensional Comparative Analysis

open access: yesFolia Oeconomica Stetinensia, 2021
Research background: The multidimensional assessment of the attractiveness of cryptocurrency exchanges seems to be an important issue, because the risk of the collapse of such an exchange or its use for illegal purposes is higher than in the case of ...
Kądziołka Kinga
doaj   +1 more source

Metallic bands in chevron-type polyacenes

open access: yes, 2020
We present electronic structure calculations based on a single-parameter plane wave expansion method for basic graphene building blocks, namely n-oligophenylenes and n-oligoacenes, revealing excellent agreement with density-functional theory.
Kher-Elden, Mohammed A.   +5 more
core   +1 more source

Network structure, portfolio diversification and systemic risk

open access: yesJournal of Management Science and Engineering, 2021
We investigate the effect of portfolio diversification on banking systemic risk, where the network effect is incorporated. We analyze three kinds of interbank networks, namely, random networks, small-world networks and scale-free networks.
Shouwei Li, Chao Wang
doaj   +1 more source

Estimation of Capital Stock in Agricultural Sub-sectors and the Process of Capital Formation in Iran\'s Development Plans [PDF]

open access: yesپژوهشهای اقتصادی, 2010
The lack of statistics has hampered attempts to estimate fixed capital for the agricultural sub-sectors of Iran. Giving a non anonymous agreement on the depreciation rate of capital in machineries and constructions, an indirect method of estimation is ...
Habibollah Salami   +2 more
doaj  

A Comparison Of K-Means And Fuzzy C-Means Clustering Methods For A Sample Of Gulf Cooperation Council Stock Markets

open access: yesFolia Oeconomica Stetinensia, 2014
The main goal of this article is to compare data-mining clustering methods (k-means and fuzzy c-means) based on a sample of banking and energy companies on the Gulf Cooperation Council (GCC) stock markets.
Al-Augby Salam   +3 more
doaj   +1 more source

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