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Tytuł:
On the matrix form of Kronecker lemma
Autorzy:
da Silva, João
Oliveira, António
Powiązania:
https://bibliotekanauki.pl/articles/729968.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
matrix Kronecker lemma
matrix analysis
convergence
Opis:
A matrix generalization of Kronecker's lemma is presented with assumptions that make it possible not only the unboundedness of the condition number considered by Anderson and Moore (1976) but also other sequences of real matrices, not necessarily monotone increasing, symmetric and nonnegative definite. A useful matrix decomposition and a well-known equivalent result about convergent series are used in this generalization.
Źródło:
Discussiones Mathematicae Probability and Statistics; 2009, 29, 2; 233-243
1509-9423
Pojawia się w:
Discussiones Mathematicae Probability and Statistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of catfish value chain in akwa ibom state, Nigeria
Autorzy:
Obot, Akaninyene Patrick
Powiązania:
https://bibliotekanauki.pl/articles/1892306.pdf
Data publikacji:
2020-04-02
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
Policy Analysis Matrix, Competitiveness and Profitability.
Opis:
Capture fisheries production has increased sharply, and its contribution to economic growth of the region and welfare of the people in Akwa Ibom State have been quite significant. Up to now, micro-analyses of artisanal and capture fisheries, especially catfish (Clarias gariepinus) have often been carried out. Nevertheless, the competitiveness analysis of catfish capture is still limited; also, there is lack of development policies for capture and artisanal fisheries based on economic analyses. Therefore, this paper aims to come up with economic policies supporting the development of artisanal and capture fisheries in Akwa Ibom State. Data was collected in Akwa Ibom State. The types of data used include catfish value chain data, and farmers’ costs and incomes. The Policy Analysis Matrix (PAM) method was used to reach the objective of this study. The study found that the Private Cost Ratio (PCR) was 0.61 for producers, 0.96 for processors and 0.59 for marketers which means that the production of agricultural goods was profitable for the farmers. In turn, the Domestic Resources Cost Ratio (DRC) was 0.17 for producers, 0.65 for processors and 0.34 for marketers, meaning that the value of domestic resources used in production is lower than the value of foreign exchange earned or saved; this indicates that the industry might have a comparative advantage. Research implications showed that the catfish fisheries business generated economic and financial benefits for local fishermen. It would be more advantageous to be able to compete with catfish from other regions as well as other countries, particularly if supported by government policies for a consistent and sustainable stabilization of input prices and production output of catfish fisheries.
Źródło:
Journal of Agribusiness and Rural Development; 2020, 55, 1; 53-60
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena jakości zasilania odbiorników trójfazowych
Power quality assessment of three-phase power system
Autorzy:
Ładniak, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/269023.pdf
Data publikacji:
2019
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
obwód trójfazowy
teoria mocy
jakość zasilania
analiza tensorowa
analiza macierzowa
multiphase power system
power theory
power quality
tensor analysis
matrix analysis
Opis:
W artykule opisano metodę oceny warunków zasilania odbiorników trójfazowych bazującą na tensorowym opisie chwilowych zmian mocy w punkcie przyłączeniowym. Bazując na dwóch ortogonalnych składowych mocy odbiornika wielofazowego istnieje możliwość oceny zarówno jakości zasilania, jak i zniekształceń spowodowanych niesymetrią obciążenia oraz nieliniowością elementów obciążenia. Analiza chwilowych zmian składowych mocy odbiornika trójfazowego pozwala na identyfikację kierunku przepływu energii oraz wyznaczenie globalnych wskaźników jakości zasilania. Ponieważ metoda bazuje na pomiarze chwilowych zmian wartości napięć i prądów na zaciskach badanego układu może być wykorzystywana do oceny zniekształceń mocy spowodowanych przez różnego rodzaju układy przekształtnikowe.
The electrical power quality in three-phase power system is a very important problem because a number and power of nonlinear loads is growing years to years. Problems caused by poor power quality have great adverse not only technical but also economical. For this reason, both energy suppliers and energy consumers are looking for new methods to solve energy quality problems and power compensation techniques. This paper presents a new approach for power quality analysis using the matrix and tensor theory. Using those mathematical tools is possible describe a time changes of voltages, currents and power at the terminals of a three-phase circuit as second rank tensors. Each of these tensors has a physical interpretation and can be split into a symmetrical and antisymmetric tensor. One of them describes the energy carried by the circuit, but the other one describes the rate of change of energy stored in the circuit elements. One of them describe the transfer energy by the circuit and second one describes the speed of changes the energy stored in the elements of circuit. This method can be used to describe behavior of multiphase circuit in transient and steady state condition. It is powerful tool for monitoring power quality problems generated in industrial plants where are non-linear and time-variants loads.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2019, 67; 61-64
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two-Criteria Analysis of Casting Technologies of Metal and Composite Foams
Dwu-kryterialna analiza oceny metod wytwarzania odlewanych pian metalowych i kompozytowych
Autorzy:
Gawdzińska, K.
Gucma, M.
Powiązania:
https://bibliotekanauki.pl/articles/351461.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal and composite foams
manufacturing methods
matrix chart analysis
piany metalowe i kompozytowe
metody produkcji
matrix
Opis:
The determination of potential areas of application for metal foams allows to precisely define properties these materials are expected to have. The characteristics of metal foams are strictly related to their cellular structure, which in turn depends on the manufacturing method and materials used. Obviously, metal foam producers should strive to make these materials using inexpensive, or cost-effective technologies, yielding possibly good quality and being environment-friendly. This paper briefly characterizes the manufacturing of metal and composite foams by casting methods. We determine an optimal manufacturing method based on a matrix diagram for metal and composite foams satisfying the two - criteria: “manufacturing costs” (depending on the price of production equipment and labour, cost of materials for foam manufacturing, environmental impact) and “foam quality” (depending on the manufacturing precision, homogeneity of the structure, pore size, shape, and volumetric fraction).
Określenie potencjalnych obszarów zastosowań pian metalowych pozwala sprecyzować wymagania dotyczące właściwości tych materiałów. Są one ściśle związane ze strukturą komórkową determinowaną metodą wytwarzania oraz zastosowanym materiałem wyjściowym. Należy dążyć do wytworzenia tych struktur metodami tanimi, dającymi najlepszą jakość wyrobu a przy tym możliwie przyjaznymi dla środowiska naturalnego. W niniejszej pracy, krótko scharakteryzowano wytwarzanie pian metalowych i kompozytowych metodami odlewniczymi. W pracy opisano jak określić optymalny sposób wytwarzania w oparciu o schemat macierzy dla pianek metalicznych i kompozytowych spełniających dwa kryteria: “koszty produkcji” (w zależności od ceny urządzeń do produkcji i pracy, kosztów materiałów do produkcji pianki, oddziaływania na środowisko) oraz “jakości piany” (w zależności od precyzji wykonania, jednorodność struktury, wielkości porów, kształt i frakcję objętościową).
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 1; 305-308
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Opracowanie urządzenia do zdejmowania trajektorii ruchu narzędzi przy obsłudze manualnej
The equipment design for mapping a trajectory of a tools movement in manual use
Autorzy:
Syryczyński, A.
Dunaj, J.
Zabielski, M.
Powiązania:
https://bibliotekanauki.pl/articles/257646.pdf
Data publikacji:
2007
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
trajektoria narzędzia
znacznik
układ współrzędnych
rachunek macierzowy
kamera wizyjna
robot
oprogramowanie
tool's trajectory
marker
co-ordinate system
matrix analysis
camera
vision software
Opis:
W pracy przedstawiono opracowanie metody i urządzenia do zdejmowania trajektorii ruchu narzędzi z udziałem aktywnego znacznika i wielokamerowego systemu wizyjnego. System pracuje w pasmach światła widzialnego i podczerwonego. Ciągi położeń uzyskane z analizy obrazów podlegają transformacjom układów współrzędnych i przetworzeniom numerycznym. Końcową fazą procesu jest automatyczne generowanie programu robota odtwarzającego trajektorię. Aplikacje pozwolą przyspieszyć tworzenie programów robotów, poprawić jakość wytwarzania i warunki pracy.
This paper presents the design of the method and the equipment for mapping a tool's trajectory with use of an active marker and a multi-camera vision system. The system works in the bands of visible light and infrared radiation. The positions sequences obtained from analysis of images have undergone transformations of the co-ordinate systems and numerical conversions. The final phase of process is an automatic generation program of the robot repeating tool's trajectory. The application allows the acceleration of the creation of the robot's program, as well as improving the quality and conditions of work.
Źródło:
Problemy Eksploatacji; 2007, 1; 145-156
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O roli informacji na temat macierzy wypłat w konkurencyjnej grze na rynku telekomunikacyjnym
Autorzy:
Laskowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/317362.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
symetria informacyjna
asymetria informacyjna
teoria gier
analiza macierzy wypłat
konkurencja
rynek telekomunikacyjny
information symmetry
information asymmetry
game theory
payoff matrix analysis
competition
telecommunications market
Opis:
Na podstawie elementów teorii gier przeprowadzono analizę różnych przypadków symetrii i asymetrii informacyjnej, dotyczącej gier rynkowych na rynku telekomunikacyjnym. Jako przykład przeanalizowano wpływ informacji o strukturze kosztów, ponoszonych przez graczy konkurencyjnych w grze o zysk. Zilustrowano niektóre problemy związane z istnieniem ograniczeń informacyjnych oraz wskazano korzyści, jakie wypływają z ich przekraczania.
Based on the games theory, an analysis of various cases of information symmetry and asymmetry was conducted with regard to market games in the telecommunications market. As an example, the influence of information about the structure of costs incurred by players competing for profit is analysed. Selected issues related to information limitations are presented, and benefits of overcoming such limitations are highlighted.
Źródło:
Telekomunikacja i Techniki Informacyjne; 2004, 3-4; 61-72
1640-1549
1899-8933
Pojawia się w:
Telekomunikacja i Techniki Informacyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Matrices splitting the norm and their applications in the theory of stability of difference schemes
Autorzy:
Pokrzywa, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/747515.pdf
Data publikacji:
1985
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Matrix norms, conditioning, scaling
Norms of matrices, numerical range, applications of functional analysis to matrix theory
Stability and convergence of difference methods
Opis:
.
In a finite-dimensional real or complex linear normed space X there are characterized all the sets of operators A1,...,An which sum up to the identity operator and such that ||Aix||+...+||Anx|=||x|| for all xX. An example of application in the theory of stability of difference schemes is given.
Źródło:
Mathematica Applicanda; 1985, 13, 26
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two-Tier Haddon Matrix Approach to Fault Analysis of Accidents and Cybernetic Search for Relationship to Effect Operational Control: A Case Study at a Large Construction Site
Autorzy:
Mazumdar, A.
Sen, K. N.
Lahiri, B. N.
Powiązania:
https://bibliotekanauki.pl/articles/90001.pdf
Data publikacji:
2007
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
hazard
Haddon matrix
fault analysis
accident analysis
cybernetics
Opis:
The Haddon matrix is a potential tool for recognizing hazards in any operating engineering system. This paper presents a case study of operational hazards at a large construction site. The fish bone structure helps to visualize and relate the chain of events, which led to the failure of the system. The two-tier Haddon matrix approach helps to analyze the problem and subsequently prescribes preventive steps. The cybernetic approach has been undertaken to establish the relationship among event variables and to identify the ones with most potential. Those event variables in this case study, based on the cybernetic concepts like control responsiveness and controllability salience, are (a) uncontrolled swing of sheet contributing to energy, (b) slippage of sheet from anchor, (c) restricted longitudinal and transverse swing or rotation about the suspension, (d) guilt or uncertainty of the crane driver, (e) safe working practices and environment.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2007, 13, 1; 49-61
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel framework for fetal nuchal translucency abnormality detection using hybrid maxpool matrix histogram analysis
Autorzy:
Verma, Deept
Agrawal, Shweta
Powiązania:
https://bibliotekanauki.pl/articles/38703226.pdf
Data publikacji:
2023
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
nuchal translucency
genetic disorders
hybrid maxpool matrix histogram analysis
pregnant women
machine learning
przezierność karku
zaburzenia genetyczne
analiza histogramu hybrydowej macierzy Maxpool
kobiety w ciąży
nauczanie maszynowe
Opis:
Birth defects affect 1 to 3 percent of the population and are mostly detected in pregnantwomen through double, triple, and quadruple testing. Ultrasonography helps to discoverand define such anomalies in fetuses. Ultrasound pictures of nuchal translucency (NT)are routinely used to detect genetic disorders in fetuses. The NT area lacks identifiablelocal behaviors and detection algorithms are required to classify the fetal head. On theother hand, explicit identification of other body parts comes at a higher cost in termsof annotations, implementation, and analysis. In circumstances of ambiguous head placement or non-standard head-NT relationships, it may potentially cause cascading errors.In this research work, a linear contour size filter is used to decrease noise from the image,and then the picture is scaled. Then, a novel hybrid maxpool matrix histogram analysis (HMMHA) is proposed to enhance the initiation and progression. The training andassessment were conducted using a dataset of 33 ultrasound pictures. Extensive testingshows that the direct method reliably identifies and measures NT. The suggested modelmay assist doctors in making decisions about pregnancies with fetal growth restriction,particularly for patients who have nuchal translucency or congenital anomalies and donot require induced labor due to these abnormalities. The performance of the proposedtechnique is analyzed in terms of error rate, sensitivity, Matthews correlation coefficient(MCC), accuracy, precision, recall, and F1-score. The error rate of the proposed model is28.21% and it is found to be better when compared with the conventional approaches. Finally, the error prediction is compared with the existing models obtained from the medicaldataset of pregnant women to identify fetal abnormality positions.
Źródło:
Computer Assisted Methods in Engineering and Science; 2023, 30, 3; 277-290
2299-3649
Pojawia się w:
Computer Assisted Methods in Engineering and Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of risk and failure scenarios in water supply system
Autorzy:
Boryczko, K.
Rak, J.
Tchórzewska-Cieślak, B.
Powiązania:
https://bibliotekanauki.pl/articles/2069508.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
fault tree analysis
matrix methods
risk analysis
water supply system
Opis:
Water supply system is complicated technical system which belongs to underground urban infrastructure. Its accurate functioning determines everyday live stability of citizens. Risk analysis is a key phase of the process of water supply safety management. The aim of this paper is to present new propose of methods for risk of the first type (associated with quantity of supplied water) and the risk of the second type (associated with quality of supplied water) analyses in water supply system. The paper contains the description of matrix methods for risk analyses and methods describing cause-and-effect relationship of failure events (fault tree analysis).
Źródło:
Journal of Polish Safety and Reliability Association; 2014, 5, 2; 11--18
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
APPLICATION OF SPATIAL TECHNIQUES FOR PANEL DATA ANALYSIS OF AGRICULTURAL REAL ESTATE MARKET IN THE YEARS 2004 – 2012
Autorzy:
Pietrzykowski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/453124.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
weight matrix
spatial analysis
cluster analysis
price of agricultural land
Opis:
In the economic studies models based on panel data are increasingly used. The standard panel models are composed of a cross-section character of the data in the time, but do not include the interaction associated with the location of objects in the geographic space. Spatial panel models are based on the information contained cross-section data in the time with regard to space. The paper proposes a different approach to the changes in time on the basis of spatial matrix weight. The aim of this study was to show the possibility to apply spatial weights matrix with particular consideration of time. Data for the analysis came from the database of the CSO and the ARMA in period 2004-2012. In addition to working methods of spatial statistics classical taxonomic methods were also used to obtain a distance matrix.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2014, 15, 2; 188-197
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
International market selection: a MABA based EDAS analysis framework
Autorzy:
Hashemkhani Zolfani, Sarfaraz
Ebadi Torkayesh, Ali
Ecer, Fatih
Turskis, Zenonas
Šaparauskas, Jonas
Powiązania:
https://bibliotekanauki.pl/articles/19233641.pdf
Data publikacji:
2021
Wydawca:
Instytut Badań Gospodarczych
Tematy:
international market selection
EDAS
General Electric (GE) Matrix
McKinsey matrix
MABA analysis
Opis:
Research background: International market selection is an essential issue for big companies that supply food products. Different types of decision factors and different characteristics of different international markets have brought up a complicated decision-making problem for food supply companies. In order to select the most suitable and profitable market, food supply companies have to consider several qualitative and quantitative factors, including social, political, economic, and ecological aspects. Purpose of the article: In order to overcome international market selection issues, the current study develops a novel integrated decision-making tool. Methods: A novel decision-making model of market analysis is developed as an extended model of Market Attractiveness and Business Attractiveness (MABA) analysis based on the Multiple Attribute Decision Making (MADM). To improve the MABA analysis model, we combine the EDAS method with MABA analysis to empower decision-makers in food supply companies to evaluate several international markets and select the most profitable market for their products. Findings & value added: In this study, we first identified the most important and frequently used decision factors for market analysis problems within MABA analysis under two categories: market attractiveness and business attractiveness. To show the proposed methodology's applicability and feasibility, we perform a case study for a food supply company in Iran that supplies products to Middle East and Asian countries. In order to investigate the reliability of the obtained results, we perform a sensitivity analysis concerning the importance of involved decision factors. The proposed decision-making tool results suggest that the model can be used as a reliable tool for market analysis problems. To sum up the long-term value of the study, we have developed a novel decision-making tool using MABA analysis and the EDAS method. No study integrates any MCDM methods with MABA analysis to the best of our knowledge. Integration of EDAS method with MABA analysis empowers decision-makers in market selection division to use more systematic methods for evaluating several markets.
Źródło:
Oeconomia Copernicana; 2021, 12, 1; 99-124
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multivariate and Geostatistical Analyses of Groundwater Quality for Acid Rock Drainage at Waste Rock and Tailings Storage Site
Autorzy:
Adadzi, Patrick
Allwright, Amy
Fourie, Francois
Powiązania:
https://bibliotekanauki.pl/articles/2202307.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
acid rock drainage
groundwater
correlation matrix
principal component analysis
geostatistical analysis
Opis:
A multi-disciplinary approach is indispensable for adequate acid rock drainage (ARD), mineral leaching impact, and groundwater management. Groundwater is a valuable resource, and it is critical to protect as well as mitigate the effects of pollution such as ARD in the mining environment. Mine waste storage facilities (waste rocks and tailings) are potential ARD sources capable of degrading groundwater reserves. This research investigated and reported the application of a case study of multivariate statistical and spatial variability of selected parameters associated with ARD in groundwater around WRD and TSF at mine sites. Water quality analysis data of seventy water samples from 10 boreholes located at the WRD and TSF mine were utilised in this study. The correlation matrix and principal components analysis was applied to the data set to determine the associated variability in groundwater in relation to ARD. Geostatistical analysis was used to produce contour maps to ARD principal components of the study site, using ordinary kriging of the best fit models. The application of multivariate statistical and geospatial analysis in groundwater quality assessment with coupled soil and groundwater modelling of flow and transport at waste rock dump and tailings storage sites provides an essential tool for exploratory data analysis, and spatial extent determination of the relationship between various data sets significant to acid rock drainage.
Źródło:
Journal of Ecological Engineering; 2022, 23, 12; 203--216
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationships between hybrid performance and genetic distance revealed by morphological and AFLP marker in cucumber
Autorzy:
Olfati, J. A.
Samizadeh, H.
Peyvast, Gh.
Rabiei, B.
Khodaparast, S. A.
Powiązania:
https://bibliotekanauki.pl/articles/2199652.pdf
Data publikacji:
2012-04-19
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
cluster analysis
diallel
heterosis
orthogonal comparison
similarity matrix
Opis:
This study investigated the relationship of morphological and molecular genetic distance with hybrid performance and heterosis in cucumber in an attempt to make use of genetic distance in predicting hybrid performance. The results of this study showed that GD, in general, correlated poorly with heterosis and SCA. Results showed that the mean values of the hybrids were significantly larger or smaller for many traits when compared with the mean of parental lines, indicating that heterosis was present for these traits. In next step we compare inter group hybrids versus intra group hybrids. This test showed that intra group hybridization although increased the yield and yield component but decrease some fruit quality such as fruit color and shape.
Źródło:
Plant Breeding and Seed Science; 2012, 65; 87-98
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The technology of hierarchical agglomerative cluster analysis in library research
Autorzy:
Кunenets, N.
Powiązania:
https://bibliotekanauki.pl/articles/411442.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
cluster analysis
object-property table
proximity matrix
dendrogram
clusters
Opis:
This article describes the simple technology of the hierarchical agglomerative cluster analysis of 20 different libraries, presented by the samples of classification attributes of the same volumes. It is necessary to construct a proximity matrix for an effective process of cluster analysis, using the data from the table “library-classification features”. For separating a set of selected objects into clusters, so that each of them has objects, the most appropriate for its type, it is necessary to create a table “object-property”, where libraries are objects and individual and equal dimension vectors (sets) of characteristic classification features are properties. To do this you should: form the set of libraries that are the objects of clustering; define for each library the set of classification features and its power (volume) in the same nominal scale; choose the value scale of classification features; form a table object-property. This technology is implemented in the environment of MsExcel-2003. It includes the transformation of one-dimensional data into multi-dimensional indexes, using the descriptive statistics and distributions of individual parameters, the creation of the “object-property” table, the building of the proximity matrix, the definition of the dendrogram structure and the cluster interpretation. The application of clustering method can further focus on creating algorithms of effective information search, and also building the scientifically-reasonable classification systems orientated on the library science. The method of hierarchical agglomerative cluster analysis can be used with typological or semantic distribution of library funds, or studying of their thematic and specific composition. This method can be considered as universal, that gives an opportunity to formalize the typology division of any objects of librarianship.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 1; 35-41
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 91

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