Detecting Arabic Spam Reviews in Social Networks Based on Classification Algorithms

Reviews or comments that users leave on social media have great importance for companies and business entities. New product ideas can be evaluated based on customer reactions. However, this use of social media is complicated by those who post spam on social media in the form of reviews and comments. Designing methodologies to automatically detect and block social media spam is complicated by the fact that spammers continuously develop new ways to leave their spam comments. Researchers have proposed several methods to detect English spam reviews. However, few studies have been conducted to detect Arabic spam reviews. This article proposes a keyword-based method for detecting Arabic spam reviews. Keywords or Features are subsets of words from the original text that are labelled as important. A term's weight, Term Frequency–Inverse Document Frequency (TF-IDF) matrix, and filter methods (such as information gain, chi-squared, deviation, correlation, and uncertainty) have been used to extract keywords from Arabic text. The method proposed in this article detects Arabic spam in Facebook comments. The dataset consists of 3,000 Arabic comments extracted from Facebook pages. Four different machine learning algorithms are used in the detection process, including C4.5, kNN, SVM, and Naïve Bayes classifiers. The results show that the Decision Tree classifier outperforms the other classification algorithms, with a detection accuracy of 92.63%.

Innovations in mentoring as part of the strategy to improve the quality of talent pool for the Russian mineral and raw material sector

In contemporary Russian practices, mentoring is a multifaceted innovative 'human resource technology' aimed at developing professional skills and corporate competencies, as well as systematic and targeted participation in professional development of employees who have insufficient work experience or have difficulties in mastering new technologies and work techniques. Today, the institution of mentoring is an open industrial, educational and social space where the mentor transfers not only readymade ways to solve production problems, but also teaches how to use available intellectual and material resources. Although the mentoring process in its traditional sense does not require large financial investments, most business entities, industrial enterprises and companies are more actively using training, coaching techniques and various forms of internships, which are valuable forms of professional development of employees, but, as our research has shown, they do not have the potential that the targeted on-the-job mentoring possesses. With all the variety of forms and programmes of mentoring activities, there is a clear lack of innovative ideas aimed at improving its efficiency, which fully applies to the mentoring of students who take their work placements during vocational education, which is the subject of the research presented in this article. The literature and research studies do not fully analyse the potential of the third mission of universities regarding the issue of targeted mentoring aimed at more proactive and advanced applied training of graduates, capable of responding to "the great challenges". The article highlights the mentoring models used in foreign companies, which are similar to the types of mentoring technologies successfully implemented by Russian enterprises.

State Procedures for Improving the Investment Climate in the Russian Federation: Prospects for Improvement

The COVID-19 pandemic interrupted many trends that had developed before it and again updated the issue of modernizing the Russian economy, restarting the mechanisms of economic growth and sustainable socio-economic development. The key to resolving these issues is to increase the investment activity of the business. The investment climate is one of the key characteristics that testify to the freedom of entrepreneurial activity, the ease of opening and conducting business, the quality of regulatory procedures in the economy, the effectiveness of business entities, and the provision of equal opportunities for the development of the private sector. A favorable investment climate reveals the potential for the development of private companies. The article considers the system of state procedures in the field of improving the national investment climate, gives a brief description of the main tools and projects to improve the investment climate, analyses the changes in the main target indicators of investment attractiveness of the Russian Federation.

Determining the Level of Market Concentration in the Construction Sector—Case of Application of the HHI Index

Background—competitive conditions are often distorted in the construction sector, therefore this affects the market position of all participants. This paper seeks to find the tools for properly assessment of participants by Herfindahl-Hirschmann index (HHI) and to identify what parameters have the greatest impact in the competitiveness of the construction sector. Methods: in this article the DEMATEL method was used whereas tool for assessing the balance of market concentration as it may help to determine factor with the greatest influence on a firm’s HHI. Results in this work showed how different parameters affect each other and their impact on a value of a firms’s HHI. When the parameters are determined, they can be useful for assesment of mergers their influence on the HHI and alteration of the market’s power balance. Conclusions—The calculation of the HHI by using the DEMATEL method allowed to check the empirical implementation check of the multicriteria assessment method, on the market power of business entities, operating in the distorted market conditions of the construction sector.

A Critical Assessment of Pertinent Locus Standi Features of the Derivative Remedy under Zimbabwe's New Companies and Other Business Entities Act

The importance and contribution of derivative litigation to the effectiveness and credibility of a jurisdiction's corporate governance system is indisputable. There is a positive correlation between good corporate governance practices, which include shareholders’ rights, and investors’ return on their investments. On the one hand, an overly pro-shareholder derivative scheme is vulnerable to abuse and results in unnecessary interference with company management. This may, in turn, discourage directors from entrepreneurial risk-taking and undermine enterprise efficiency. On the other hand, a complex and ineffective system of derivative litigation protects errant directors and decreases investor confidence. This article is a critical assessment of Zimbabwe's recently adopted statutory derivative remedy. The analysis focuses on five locus standi-related aspects of the new statutory derivative regime. The article highlights some major weaknesses within Zimbabwe's statutory remedy and proposes pertinent legislative amendments.

The Influence of New Agricultural Business Entities on Farmers’ Employment Decision

The purpose of this article is to explore the influence of new agricultural business entities on farmers’ employment decision and provide reference for improving policies related to new agricultural business entities and farmers’ employment. This paper constructs a theoretical analysis framework of “new agricultural business entities—land transfer and purchase of agricultural socialized services—farmers’ employment decision”, and then empirically tests the impact of new agricultural business entities on farmers’ employment decision by combining the analysis methods of the benchmark regression, propensity score matching and mediation effects. The research shows that: (1) New agricultural business entities are beneficial for promoting farmers’ employment decision. (2) Renting out land and the purchase of agricultural socialized services have a positive and partially mediating effect between the new agricultural business entities and farmers’ employment decision, and the mediating effects of the two paths account for 7.12% and 6.25% of the total effects, respectively. (3) In addition to key variables, personal characteristics of decision-making, family characteristics and production and management characteristics are also key factors that affect farmers’ employment decision. (4) The new agricultural business entities increase the probability of farmers’ employment (with legal contract) and entrepreneurship, and reduce the idle labor force in rural areas. Finally, this study proposes some policy recommendations including establishing a perfect farmland transfer market, developing rural industry properly and improving agricultural socialized service systems.

The impact of employee motivation on organisational performance in the case of NOSA company

The article investigates the features of employee motivation impact on the organisation effectiveness. The purpose of the study is to clarify the theoretical foundations of motivation, improve the methodological approaches and substantiate the practical recommendations concerning the motivational mechanism development, which is one of the most important components in the chain of achieving high performance of modern business entities. Research objectives are to analyse the of employee motivation impact on the effectiveness of the organisation, identify and evaluate the relationship between the impact of the remuneration system on the results of the organisation’s activities, formulate recommendations to firms and their managers on promoting the system of motivation and remuneration of employees, that expands the effectiveness of the organisation.In the article the terminological analysis of the definition of “employee motivation” has been carried out. The relationship between employee motivation and the remuneration system with organisational efficiency has been formalised. The effectiveness of the motivation system and the employee incentive system at Iran software and hardware company (NOSA) has been evaluated using the questionnaire and expert survey method. The relationship between the productivity of the company’s personnel and the level of remuneration has been ascertained using the correlation and regression analysis. The recommendations to improve the efficiency of the labor motivation system at the NOSA enterprise have been formulated based on the obtained data.The results obtained allowed us to conclude that the interaction of motives and incentives is the tool that allows us to meet the needs of the employee in the most appropriate way for him – as a result of the realization of his abilities. Study of the motivation system at the NOSA enterprise indicates that the staff is not satisfied with the material remuneration. The company’s management during developing directions for improving the motivation program should take into account that the growth rate of labor productivity should outstrip the growth rate of its remuneration, otherwise the company’s resources will be spent inefficiently.

Pick-Up Savings System to Improve the Financial Management Capabilities of Village Communities: Analysis of The Role of Village-Owned Enterprises

The business entity owned by the Village, as an economic institution at the village level, established to improve the economic welfare of the village community. One of the efforts made is to increase awareness behavior in saving. The behavior of villagers in saving is often still short-term oriented, so most villagers have not been able to manage finances to anticipate their financial problems in the future. Therefore, research on the role of BUMDes as a village-scale economic institution in improving the financial management capabilities of the village community is very important to do. The purpose of this research is to find out how the role of business entities have in improving the financial management capabilities of the community through savings products with a savings pick-up system. This research uses a qualitative approach with case study methods in Village Owned Enterprises (BUMDes) Pakandangan Emas. Data collection techniques are conducted through interviews and observations in the field. This research found that Unit sharia savings business in BUMDes Pakandangan Emas can shape people's behavior in long-term financial management. This behavior is formed mainly through a savings system that is directly picked up to the community.

ФІНАНСОВА БЕЗПЕКА ПІДПРИЄМСТВА ТА НАУКОВО-МЕТОДИЧНИЙ ІНСТРУМЕНТАРІЙ ЇЇ ОЦІНЮВАННЯ

The article attempts to tackle theoretical and methodological issues related to enhanced understanding of the nature of enterprise financial security as well as the use and the selection of research and methodological tools for its evaluation. An emphasis is put that in the current vulnerable economic environment, domestic enterprises are greatly challenged by a wide range of risks and threats caused by a number of negative effects from external and internal factors. It is argued that the lack of argument and consistency in building a robust financial security framework for business entities might translate into a drop in revenues and profits, loss of liquidity, solvency and financial independence, along with spurring unreasonable amounts of receivables and payables and, consequently, triggering a crisis situation. The purpose of this research is to explore modern analytical, financial, economic and statistical tools to assess the enterprise financial security and to enclose its advantages, disadvantages and applicability in the financial management context. Within the scope of this research, the enterprise financial security is viewed as a particular enterprise state characterized by the most efficient use of resources, profitability, and financial stability which acting together contribute to gaining a successful business performance, eliminating the negative effects from external and internal destabilizing factors over an indefinite period of time. According to the research findings, to assess the enterprise financial security, it is suggested employing a research and methodological toolkit based on the cash flow analysis, evaluation of financial stability, financial indicators, resource-based and functional approach, as well as implementation of integrated indicators. The conclusions of the study resume that given the different criteria and indicators embedded in different approaches (each of them having its pros and cons), to render a comprehensive and informative analysis, using a number of approaches to assess the level of enterprise financial security sounds reasonable enough and thus is strongly recommended.