Dariusz Siudak- Professor
- Associate professor at Lodz University of Technology
Dariusz Siudak
- Professor
- Associate professor at Lodz University of Technology
Relational perspective of the organization
Complex networks in financial markets
Artificial intelligence in management
About
40
Publications
1,492
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
111
Citations
Introduction
The areas of my research interest include issues related to the relational perspective of the organization and its impact on the value of the company, system dynamics in the area of enterprise management, and value migration in the field of complex networks using artificial neural networks and machine learning.
https://woiz.p.lodz.pl/en/pracownik/dr-hab-dariusz-siudak/
Skills and Expertise
Current institution
Additional affiliations
October 2012 - April 2022
Position
- Reasercher Associate Professor
Description
- Associate Professor; Head of the Division of Economics and Finance; Member of the Management and Quality Studies Discipline Council; Member of the Management and Production Engineering (IFE) Study Program Council; Member of the IDS Scholarship Committee of the Lodz University of Technology
October 2006 - October 2012
Education
April 2019 - February 2020
January 2009 - January 2012
October 2003 - March 2006
Publications
Publications (40)
This work describes the design of a novel financial multiplex network composed of three layers obtained by applying the MST-based cross-correlation network, using the data from 465 companies listed on the US market. The study employs a combined approach of complex multiplex networks, to examine the statistical properties of asset interdependence wi...
The emergence of Black Swan events, such as the COVID-19 pandemic and the Russian-Ukrainian war, has presented new challenges for stock markets and necessitates a redesign of portfolio management strategies. This work investigates the impact of unexpected and rare events, like the COVID-19 pandemic and the military conflict between Russia and Ukrai...
Cluster structure detection of the network is a basic problem of complex network analysis. This study investigates the structure of the value migration network using data from 499 stocks listed in the S&P500 as of the end of 2021. An examination is carried out whether the process of value migration creates a cluster structure in the network of comp...
Supporting information for: Siudak, D. Cohesion and segregation in the value migration network: Evidence from network partitioning based on sector classification and clustering. Soc. Netw. Anal. Min. 13, 26 (2023). https://doi.org/10.1007/s13278-023-01027-6
Complex financial systems are the subject of current research interest. The notion of complex network is used for understanding the value migration process. Based on the stock data of 498 companies listed in the S&P500, the value migration network has been constructed using the MST-Pathfinder filtering network approach. The analysis covered 471 com...
In this paper, I use the MST-Pathfinder approach to construct the value migration network and then analyze the network’s topological properties. This is the first attempt to build a network that includes in its structure the process of enterprise value migration on the stock exchange. Based on data from companies listed in the US market in December...
Purpose: This study was carried out to analyze the structure of the aggregated network at the level of economic sectors and to reveal the central/peripheral sectors.
Design/Methodology/Approach: The study uses the method of complex networks, with the two-step procedure employed to construct the network of economic sectors. First, the MST approach i...
An examination was performed on whether director interlocks enabled the adoption of a dividend policy for the benefit of the parent company in the ownership structure. Specifically, the study investigated the dependence of the impact of the central position in the board network on the probability of dividend payment. Based on sample of firms listed...
The classification of a company into the relevant quotation market is an essential part of stock market efficiency. The aim of the article is to predict the classification of enterprises into the two types of quotation markets on the Warsaw Stock Exchange (i.e. the main one and NewConnect) by means of network measures of the company’s participation...
The article analyzes the process of changes in the interlocking directorates network using Markov chains. The probabilities of company transitions between three specific states of networking, i.e. isolation, networking outside the largest component, and networking inside the largest component, were estimated. In addition, the average probabilities...
The goal of the article is the analysis of the central position and its type on the achieved level with respect to the structural hole in the network of interlocking directorates on the Polish capital market. The grid analysis method, as well a social network and linear regression method of ordinary least squares, were employed in the course of the...
It is often claimed that corporate and board networks display a scale-free nature, but there is no robust support for this nature. Based on data concerning the corporate board and director networks from companies listed on the Warsaw Stock Exchange Market, we applied a rigorous approach to determine whether quantities of these networks, such as deg...
This paper investigates the corporate board and director networks in the Polish capital market in 2014. We examined real board and director networks in comparison with networks that were randomly constructed. Through empirical analyses, we demonstrated that the real networks have the characteristics of small-world networks. In addition, the network...
Abstract: Purpose – The aim of the paper is an assessment of segregation and cohesion degree in the company network on the Polish capital market through the analysis of interlocking directorates of publicly listed companies.
Design/Methodology/Approach – The social network analysis and statistical analysis were applied.
Results – The companies gr...
Celem artykułu jest analiza relacji między spółkami finansowymi a przedsiębiorstwami sfery realnej oraz porównanie ich centralnych pozycji w sieci powiązań przedsiębiorstw wspólną dyrekcją na polskim rynku kapitałowym. Dane pozyskano ze spółek notowanych na Giełdzie Papierów Wartościowych w Warszawie oraz na rynku NewConnect na koniec 2014 roku. Po...
The article discusses the impact of the size of the board of directors on the value of companies on the Polish capital market. According to the resource-dependence theory, the board of directors is seen as an important instrument in reducing uncertainty in the business environment by providing key resources controlled by external entities. Regressi...
The article looks at the community structure in the network of interlocking directorates. The study covered 518 enterprises within the largest component of the total of 902 companies listed on the main market at the Warsaw Stock Exchange and on the NewConnect at the end of 2014. The strength of the community structure was assessed using the distrib...
W artykule omowiono miary analizy sieciowej pod kątem ich adekwatności w opisie realizacji strategii interlockingu ze wskazaniem na bliskośc i wartośc wlasną jako najlepiej ją opisujących. Przeprowadzono ich analizy statystyczne. Analiza ich wlaściwości statystycznych oraz związkow z wielkością rady i stopniem relacji (degree) wskazuje, ze trudno j...
The paper investigates the relationship between organizational trust and a firm's market value through the perspective of company size. The paper addresses the theoretical and empirical gap regarding the effects of organizational trust on a firm's value by embarking on stewardship and agency theories. This provides a theoretical framework to extend...
W artykule podjęto problematykę struktury społeczności sieci przedsiębiorstw powiązanych wspólną dyrekcją. Badaniem objęto 518 przedsiębiorstw w ramach największego komponentu spośród łącznie 902 przedsiębiorstw notowanych na głównym rynku Giełdy Papierów Wartościowych w Warszawie oraz na rynku NewConnect pod koniec 2014 r. Oceny siły struktury spo...
In the paper there is presented the analytical tool the map for the object. The tool can complimentary support the linear ordering analysis, in situations when cannot be applied comparison between the objects with regard to a development degree of a considered phenomenon. In the paper the tool the map for the object is presented as a complement in...
The development of the economics theory of value migration is the main goal of this paper. The required advances of understanding of this phenomenon call for clarification and distinction of related conceptions. Thus, this paper explains and compares the notions of value migration, capital migration, and a novel term, introduced in this paper - cap...
In this paper there is discussed value migration from the perspective of all economic sectors. It was introduced the method for measuring the sectorial value migration and the algorithm for classification with respect to three stages value migration model. The value migration measurement was conducted employing multivariate comparative analyses and...
The paper investigates value -based management from a perspective of value migration processes occurring on the capital market. As a result of a lack of engagement of top management in activities directed towards an increase of enterprise value, there is created a value gap expressed as the differences between current market value and its potential...
Przedmiot opracowania stanowi analiza stabilności w czasie migracji wartości przedsiębiorstw na polskim rynku kapitałowym. Do pomiaru migracji wartości przedsiębiorstw zastosowano metody porządkowania liniowego w postaci konstrukcji zmiennej syntetycznej. Dokonano podziału analizowanego zbioru przedsiębiorstw giełdowych na trzy grupy zgodnie z mode...
Artykuł przedstawia podstawy teoretyczne zachodzących na rynku kapitałowym procesów migracji wartości przedsiębiorstw. Pojęcie migracji wartości zostało wprowadzone do literatury przedmiotu przez A. Slywotzky'ego pod koniec XX wieku, choć same zjawisko następowało w gospodarkach od początku funkcjonowania zorganizowanego rynku kapitałowego. W pracy...
W opracowaniu podjęto zagadnienie taksonomicznego podziału przedsiębiorstw notowanych na GPW w Warszawie względem poziomu rozwoju migracji wartości zgodnie z modelem trzech faz migracji wartości. Zaprezentowano odpowiedni algorytm klasyfikacji przedsiębiorstw do wyszczególnionych faz migracji wartości, z wykorzystaniem zmiennej syntetycznej opracow...
The goal of this article is to conceptualize the process of value migration between companies. It takes advantage of A. Slywotzky's three stages of value migration model, which specifies the inflow, stability and outflow stages of value migration. The key issue is the discrimination of frames of the stability stage in terms of the volume of value m...
W opracowaniu podjęto analizę zachodzących na polskim rynku kapitałowym procesów migracji wartości. Do tego celu wykorzystano aparat matematyczny analizy procesu w postaci łańcuchów Markowa. Oszacowano prawdopodobieństwa przejść procesu migracji wartości pomiędzy fazami przypływu, odpływu i stabilizacji, zgodnie z modelem trzech faz migracji. Okreś...
W opracowaniu podjęto problematykę analizy jednokierunkowej migracji wartości przedsiębiorstw na poziomie zagregowanym względem sektorów gospodarczych oraz całej Giełdy Papierów Wartościowych w Warszawie. Celem artykułu jest operacjonalizacja jednokierunkowej migracji wartości. Do realizacji tego celu można wykorzystać odpowiednio zaprojektowane na...
In this article there is presented the issue of value migration processes on capital market according to its degree of efficiency. The discussion primarily focuses on the existence of the value migration phenomenon both on effective and ineffective capital market, which is based on the valuation of enterprise market value.
