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Wyszukujesz frazę "segmentation," wg kryterium: Temat


Tytuł:
Exploiting bert for malformed segmentation detection to improve scientific writings
Autorzy:
Halawa, Abdelrahman
Gamalel-Din, Shehab
Nasr, Abdurrahman
Powiązania:
https://bibliotekanauki.pl/articles/30148253.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
NLP
text segmentation
mal-segmentation
BERT
Opis:
Writing a well-structured scientific documents, such as articles and theses, is vital for comprehending the document's argumentation and understanding its messages. Furthermore, it has an impact on the efficiency and time required for studying the document. Proper document segmentation also yields better results when employing automated Natural Language Processing (NLP) manipulation algorithms, including summarization and other information retrieval and analysis functions. Unfortunately, inexperienced writers, such as young researchers and graduate students, often struggle to produce well-structured professional documents. Their writing frequently exhibits improper segmentations or lacks semantically coherent segments, a phenomenon referred to as "mal-segmentation." Examples of mal-segmentation include improper paragraph or section divisions and unsmooth transitions between sentences and paragraphs. This research addresses the issue of mal-segmentation in scientific writing by introducing an automated method for detecting mal-segmentations, and utilizing Sentence Bidirectional Encoder Representations from Transformers (sBERT) as an encoding mechanism. The experimental results section shows a promising results for the detection of mal-segmentation using the sBERT technique.
Źródło:
Applied Computer Science; 2023, 19, 2; 126-141
1895-3735
2353-6977
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metrological Aspects of Abrasive Tool Active Surface Topography Evaluation
Autorzy:
Lipiński, D.
Kacalak, W.
Powiązania:
https://bibliotekanauki.pl/articles/221792.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
grinding wheel
grain segmentation
watershed segmentation
image analysis
Opis:
Analysis of the shape and location of abrasive grain tips as well as their changes during the grinding process, is the basis for forecasting the machining process results. This paper presents a methodology of using the watershed segmentation in identifying abrasive grains on the abrasive tool active surface. Some abrasive grain tips were selected to minimize the errors of detecting many tips on a single abrasive grain. The abrasive grains, singled out as a result of the watershed segmentation, were then analyzed to determine their geometric parameters. Moreover, the statistical parameters describing their locations on the abrasive tool active surface and the parameters characterizing intergranular spaces were determined.
Źródło:
Metrology and Measurement Systems; 2016, 23, 4; 567-577
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Life Insurance Customers segmentation using fuzzy clustering
Autorzy:
Jandaghi, Gholamreza
Moazzez, Hashem
Moradpour, Zahra
Powiązania:
https://bibliotekanauki.pl/articles/1193938.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Market segmentation
customer segmentation
data mining
fuzzy clustering
life insurance
Opis:
One of the important issues in service organizations is to identify the customers, understanding their difference and ranking them. Recently, the customer value as a quantitative parameter has been used for segmenting customers. A practical solution for analytical development is using analytical techniques such as dynamic clustering algorithms and programs to explore the dynamics in consumer preferences. The aim of this research is to understand the current customer behavior and suggest a suitable policy for new customers in order to attain the highest benefits and customer satisfaction. To identify such market in life insurance customers, We have used the FKM.pf.niose fuzzy clustering technique for classifying the customers based on their demographic and behavioral data of 1071 people in the period April to October 2014. Results show the optimal number of clusters is 3. These three clusters can be named as: investment, security of life and a combination of both. Some suggestions are presented to improve the performance of the insurance company.
Źródło:
World Scientific News; 2015, 21; 24-35
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiple piezoelectronic segments in structural vibration control
Autorzy:
Pietrzakowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/279862.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
active damping
piezoelement
segmentation
Opis:
This paper presents active damping of structural vibration of a simply supported beam exited by a time-dependent concentrated force. This control is realized by means of multiple piezoelectric patches working as collocated sensors and actuators. The attention is focused on suppression of low vibration modes. The control low is based on the velocity as well as proportional-velocity ffeedback. To simplify the analysis, dynamic responses of the system are obtained by adopting the static model of piezoelement-substructure coupling which is formulated assuming the perfect bonding and negligible bending stiffness and mass of distributed sensors and actuators. An influence of spatial arrangement of sensor/actuator pairs on active damping efficiency is numerically investigated. The effective set of sensor/actuators with the controllers incorporating the proportional-velocity actions is proposed. Some results based on a simple model of the mechanical system are compared with those obtained in the case when the activated section is modelled as a laminated beam, and when the dynamic model of actuator-beam interaction, which includes the finite-thickeness shear bonding layer, is applied. This comparison shows that a sufficiently stiff glue layer between the actuator and basic structure, and thin piezoelements (when compared to the beam thickness) allow for using of the static coupling model.
Segmenty piezoelektryczne w sterowaniu procesem drgań. Praca dotyczy aktywnego tłumienia drgań swobodnie podpartej belki obciążonej zmienną w czasie skupioną siłą. Sterowanie jest realizowane za pomocą rozłożonych elementów piezoelektrycznych tworzących zespół par pomiarowo-wykonawczych. Głównym celem jest ograniczenie amplitud niskich postaci drgań. Jako funkcję sterowania przyjęto prędkościowe oraz proporcjonalno-prędkościowe sprzężenie zwrotne. W analizie dynamicznej, w celu uproszcenia obliczeń, zastosowano statyczny model oddziaływania piezoelementów idealnie połączonych z belką, zaniedbując ich masę i sztywność zginania. Na podstawie wyników stymulacji cyfrowej pokazano wpływ rozmieszczenia par pomiarowo-wykonawczych na skuteczność aktywnego tłumienia wybranych postaci drgań. Zaproponowano efektywny, segmentowy układ pomiarowo-wykonawczy z proporcjonalno-prędkościową funkcją regulacji. Wyniki odpowiadające uproszczonemu modelowi układu mechanicznego porównwno z rezultatami uzyskanymi przy zastosowaniu teorii belek laminowanych do opisu właściwości odcinków belki z piezoelementami, a także, opisując oddziaływanie elementu wykonawczego przez dynamiczny model uwzględniający ścinaną warstwę łączącą. Przedstawione porównanie uzasadnia stosowanie uproszczonego modelu obliczeniowego w przypadku dostatecznie sztywnej warstwy kleju i stosunkowo cienkich, w odniesieniu do grubości belki, elementów piezoelektrycznych.
Źródło:
Journal of Theoretical and Applied Mechanics; 2000, 38, 1; 35-50
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
C2 NIWA community – segmentation criteria and building brand associations on the example of a selected target group
Autorzy:
Popławska, A.
Powiązania:
https://bibliotekanauki.pl/articles/1941581.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska
Tematy:
target groups
community
segmentation
Opis:
Every organization which offers products or services wishes to communicate with their customers in the most effective way. This kind of communication is based on proper selection of target groups which are identified in the process of market segmentation. Therefore, it is very important to ask the question to whom the message is to be directed and what kind of a message we want to convey. This article describes the selection criteria for target groups in the Centre of Competence for Novel Infrastructure of Workable Applications (C2NIWA) which is organized in the structures of the Gdansk University of Technology. It is a place that provides advanced IT platforms for the production of various types of applications. C2NIWA users have access to the most current knowledge in this field, advisory services, and tools to collaborate on IT projects. They needed to be divided into target groups and the communication methods were adapted to their specifics. The result of this process is the establishment of appropriate associations with the brand. The article presents the results of a short research showing what kind of associations were successfully built in one of the target groups by using a system of visual identification – the logo of the C2NIWA.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2015, 19, 4; 541-550
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving Segmentation of 3D Retina Layers Based on Graph Theory Approach for Low Quality OCT Images
Autorzy:
Stankiewicz, A.
Marciniak, T.
Dąbrowski, A.
Stopa, M.
Rakowicz, P.
Marciniak, E.
Powiązania:
https://bibliotekanauki.pl/articles/221548.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Optical Coherence Tomography (OCT)
segmentation of retinal layers
image segmentation
graph theory
Opis:
This paper presents signal processing aspects for automatic segmentation of retinal layers of the human eye. The paper draws attention to the problems that occur during the computer image processing of images obtained with the use of the Spectral Domain Optical Coherence Tomography (SD OCT). Accuracy of the retinal layer segmentation for a set of typical 3D scans with a rather low quality was shown. Some possible ways to improve quality of the final results are pointed out. The experimental studies were performed using the so-called B-scans obtained with the OCT Copernicus HR device.
Źródło:
Metrology and Measurement Systems; 2016, 23, 2; 269-280
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic Extraction of the Pelvicalyceal System for Preoperative Planning of Minimally Invasive Procedures
Autorzy:
Heryan, K.
Skalski, A.
Jakubowski, J.
Drewniak, T.
Gajda, J.
Powiązania:
https://bibliotekanauki.pl/articles/220364.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pelvicalyceal system segmentation
kidney segmentation
kidney compartments
Computed Tomography (CT)
kidney cancer
Opis:
Minimally invasive procedures for the kidney tumour removal require a 3D visualization of topological relations between kidney, cancer, the pelvicalyceal system and the renal vascular tree. In this paper, a novel methodology of the pelvicalyceal system segmentation is presented. It consists of four following steps: ROI designation, automatic threshold calculation for binarization (approximation of the histogram image data with three exponential functions), automatic extraction of the pelvicalyceal system parts and segmentation by the Locally Adaptive Region Growing algorithm. The proposed method was applied successfully on the Computed Tomography database consisting of 48 kidneys both healthy and cancer affected. The quantitative evaluation (comparison to manual segmentation) and visual assessment proved its effectiveness. The Dice Coefficient of Similarity is equal to 0.871 ± 0.060 and the average Hausdorff distance 0.46 ± 0.36 mm. Additionally, to provide a reliable assessment of the proposed method, it was compared with three other methods. The proposed method is robust regardless of the image acquisition mode, spatial resolution and range of image values. The same framework may be applied to further medical applications beyond preoperative planning for partial nephrectomy enabling to visually assess and to measure the pelvicalyceal system by medical doctors.
Źródło:
Metrology and Measurement Systems; 2017, 24, 1; 3-18
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zanikanie granic między klasami społecznymi. O potrzebie poszukiwania alternatywnych segmentacji społecznych
The disappearance of boundaries between social classes. About the need to look for alternative social segmentations
Autorzy:
Urbaniak, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/547201.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Opolski. Instytut Politologii
Tematy:
social segmentation
lifestyle
social class
Opis:
A description of borderland as a space can be inspiring for an analytical presentation of other social phenomena in which coexisting borderline categories occur. An example is social stratification within which different groups of individuals referred to as layers, castes or classes can be distinguished. Their character is arbitrary, resulting from a concern for the conventional, often not very distinctive interests of some social groups. Since the 19th century, the most widespread stratification system in Western societies has been the class system. However, its analytical value has been fading due to the blurring of boundaries between particular classes. The social classes, on the one hand, are subject to strong internal differentiation and are losing their previous cohesion, and on the other hand, they are becoming similar in many respects. Therefore there is a need to create an alternative and more analytically useful way of categorizing societies in contemporary social sciences. Segmentation based on the category of lifestyle seems valuable, because lifestyle is what, in a particularly important way, differentiates in the social dimension individuals forming contemporary Western societies. At the same time, this category is so capacious and distinctive that it can be analytically useful for representatives of various social sciences. The aim of the paper is, first of all, to present the structural foundation of class systems, secondly, to identify the reasons for the loss of their analytical value, and thirdly, to discuss the scientifically useful segmentation of society relating to different lifestyles.
Źródło:
Pogranicze. Polish Borderlands Studies; 2020, 8, 2; 47-59
2545-160X
2353-3781
Pojawia się w:
Pogranicze. Polish Borderlands Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Constraints To Attendance At Visitor Attractions: The Case Of Museums, Zoos And Botanic Gardens
Autorzy:
Nowacki, Marek
Powiązania:
https://bibliotekanauki.pl/articles/627420.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
visitor attractions
constraints
attendance
segmentation
Opis:
The paper has employed a three-factor model of constraints, which differentiates intrapersonal, interpersonal and structural. The study was carried out on a sample of N = 981 adult residents of Poland. The three most common barriers constraining attendance at attractions were identified: availability, high entrance fees and lack of time. The constraints were found to be related to a number of socio-demographic characteristics, such as gender, age, education, size of place of residence and household income per capita. Three market segments limited by similar constraints and showing similar attraction attendance behaviour were identified with their socio-demographic characteristics.
Źródło:
Turyzm; 2015, 25, 1; 29-37
0867-5856
2080-6922
Pojawia się w:
Turyzm
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Foreground extraction in images obtained in active thermography
Autorzy:
Kurpiński, M.
Jamrozik, W.
Powiązania:
https://bibliotekanauki.pl/articles/114529.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
active thermography
image processing
segmentation
Opis:
Detecting defects in adhesively bonded joints, using active thermography methods is very promising NDT testing method. In many cases, tests are made with agreed conditions, where a test object is always in specific place of IR camera view. Although, for needs of industry, system should be able to adjust Region of Interest in order to prevailing conditions. Therefore, it is necessary to develop appropriate method for this task. The paper describe one of the easiest attempt to separate foreground of an IR image sequence acquired by Lock-In Thermography (LT) and Pulse Thermography (PT). Proposed approach is based on segmentation and morphological operations. The IR image sequences of 11 various samples were used for this task. Obtained results show that elaborated technique of foreground object extraction is possible.
Źródło:
Measurement Automation Monitoring; 2017, 63, 4; 150-153
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Verbrauchersegmentierung Aufgrund der Präferenzen für Regionale Produkte
Segmentacja konsumentów na podstawie preferencji wobec produktów regionalnych
Autorzy:
Jąder, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/2033504.pdf
Data publikacji:
2006-12-31
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
Segmentation
Consumer preferences
Regional product
Opis:
In den letzten Jahren wird steigende Interesse der Verbraucher an Land- und Regionalherkunft der gekauften Lebensmittelprodukte beobachtet. Um die Verbrauchergruppen zu ermitteln, die vor allem auf regionale Herkunft der Lebensmittelprodukte achten, wurde eine Segmentierung, d.h. eine Verteilung des Verbrauchermarktes gemacht. Es wurde das Verbraucherverhalten auf dem Markt der regionalen Produkte dargestellt, und auch die Beziehungen zwischen den soziodemografischen Determinanten und Interesse an dem regionalen Angebot bestimmt.
W artykule przedstawiono wyniki segmentacji konsumentów wykonanej na podstawie ich preferencji wobec produktów spożywczych pochodzących z wybranego regionu - Wielkopolski. Wyodrębniono trzy segmenty: konsumentów o najwyższym, średnim i najniższym stopniu zainteresowania ofertą regionalną. Stwierdzono, iż nastawienie do produktów z regionu zależy od takich cech demograficznych, jak wiek, wykształcenie i poziom dochodów. Do grupy konsumentów najczęściej zwracających uwagę na regionalne pochodzenie nabywanych produktów należą osoby w wieku powyżej 35 lat, ze średnim wykształceniem, których dochody kształtują się na dość wysokim poziomie. 
Źródło:
Journal of Agribusiness and Rural Development; 2006, 5, 377; 161-170
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multicriteria analysis for behavioral segmentation
Autorzy:
Granat, J.
Powiązania:
https://bibliotekanauki.pl/articles/308944.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
segmentation
clustering
multicriteria analysis
telecommunications
Opis:
Behavioral segmentation is a process of finding the groups of clients with similar behavioral patterns. The basic tool for segmentation is a clustering algorithm. However, the clusters generated by the algorithm depend on the preprocessing steps as well as parameters of the algorithm. Therefore, there are many possibilities of dividing the clients into segments and it is a subjective process. In this paper we will focus on application on multicriteria analysis for selecting the best partition of clients into segments.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 3; 39-43
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and analysis of a lean interface for Sanskrit corpus annotation
Autorzy:
Goyal, P.
Huet, G.
Powiązania:
https://bibliotekanauki.pl/articles/103855.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
Tematy:
Sanskrit
text segmentation
annotation
interface
Opis:
We describe an innovative computer interface designed to assist annotators in the efficient selection of segmentation solutions for proper tagging of Sanskrit corpora. The proposed solution uses a compact representation of the shared forest of all segmentations. The main idea is to represent the union of all segmentations, abstracting from the sandhi rules used, and aligning with the input sentence. We show that this representation provides an exponential saving, in both space and time. The segmentation methodology is lexicon-directed. When the lexicon does not have full coverage of the corpus vocabulary, some chunks of the input may fail to be recognized. We designed a lexiconacquisition facility, which remedies this incompleteness and makes the interface more robust. This interface has been implemented, and is currently being applied to the annotation of the Sanskrit Library corpus. Evaluation over 1,500 sentences from the Pañcatantra text shows the effectiveness of the proposed interface on real corpus data.
Źródło:
Journal of Language Modelling; 2016, 4, 2; 145-182
2299-856X
2299-8470
Pojawia się w:
Journal of Language Modelling
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Robust and Accurate Iris Segmentation Algorithm for Color and Noisy Eye Images
Autorzy:
Strzelczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/308523.pdf
Data publikacji:
2010
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
biometrics
image segmentation
iris recognition
Opis:
Efficient and robust segmentation of iris images captured in the uncontrolled environments is one of the challenges of non-cooperative iris recognition systems. We address this problem by proposing a novel iris segmentation algorithm, which is suitable both for monochrome and color eye images. The method presented use modified Hough transform to roughly localize the possible iris and pupil boundaries, approximating them by circles. A voting mechanisms is applied to select a candidate iris regions. The detailed iris boundary is approximated by the spline curve. Its shape is determined by minimizing introduced boundary energy function. The described algorithm was submitted to the NICE.I iris image segmentation contest, when it was ranked 11th and 10th out of total 97.
Źródło:
Journal of Telecommunications and Information Technology; 2010, 4; 5-9
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poprawa wiarygodności wyników analizy obrazów poprzez zastosowanie metod segmentacji odpornych na zmianę orientacji obrazu
Improvement of image analysis reliability by using oreintation independent region based image segmentation method
Autorzy:
Bal, A.
Powiązania:
https://bibliotekanauki.pl/articles/154377.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
analiza obrazu
segmentacja obrazów
obszarowe metody segmentacji
segmentacja niezależnie od orientacji
image analysis
image segmentation
scan direction independent segmentation
region based segmentation
Opis:
W pracy przedstawione zostało istotne z punktu widzenia segmentacji obrazów, jak i ich analizy, zagadnienie zależności wyniku segmentacji obrazu od jego orientacji. Jako rozwiązanie tego problemu dla segmentacji obrazu przez łączenie obszarów w pracy zaproponowano równoległą metodę segmentacji. Rozważania teoretyczne zostały zilustrowane prezentacją wyników uzyskanych zależną i niezależną (tzn. równoległą) od orientacji metodą segmentacji obrazów.
In this article important problem for image segmentation and image analysis is dependence between image orientation and image segmentation results is presented. As a solution of this problem in case of image segmentation by region merging new parallel image segmentation method is proposed. As an illustation of theoretical analysis of this problem results obtained from oreintation dependent and independent (it is parallel) method are also presented.
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 9 bis, 9 bis; 153-156
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł

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