A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
Filters
Trajectory-based Algorithm Selection with Warm-starting
[article]
2022
arXiv
pre-print
Preserved Fulltext
As suggested in Jankovic et al. ...
arXiv:2204.06397v1
fatcat:qf7ywzicxfg4pkn6otevzok3gu
Per-run Algorithm Selection with Warm-starting using Trajectory-based Features
[article]
2022
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
Per-instance algorithm selection seeks to recommend, for a given problem instance and a given performance criterion, one or several suitable algorithms that are expected to perform well for the particular setting. The selection is classically done offline, using openly available information about the problem instance or features that are extracted from the instance during a dedicated feature extraction step. This ignores valuable information that the algorithms accumulate during the
arXiv:2204.09483v1
fatcat:rpxh5ibl6rebdngmdz7tmz6lme
more »
... process. In this work, we propose an alternative, online algorithm selection scheme which we coin per-run algorithm selection. In our approach, we start the optimization with a default algorithm, and, after a certain number of iterations, extract instance features from the observed trajectory of this initial optimizer to determine whether to switch to another optimizer. We test this approach using the CMA-ES as the default solver, and a portfolio of six different optimizers as potential algorithms to switch to. In contrast to other recent work on online per-run algorithm selection, we warm-start the second optimizer using information accumulated during the first optimization phase. We show that our approach outperforms static per-instance algorithm selection. We also compare two different feature extraction principles, based on exploratory landscape analysis and time series analysis of the internal state variables of the CMA-ES, respectively. We show that a combination of both feature sets provides the most accurate recommendations for our test cases, taken from the BBOB function suite from the COCO platform and the YABBOB suite from the Nevergrad platform.
Microbiological analysis of the mummy of St. Marcian
2011
Collegium Antropologicum
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2015; you can also visit the original URL.
The file type is application/pdf.
The paper provides the results of the microbiological analysis of samples taken from the mummified remains of St. Marcian. Microorganisms found belong to bacteria and fungi of the genera Aspergillus, Bacillus, Penicillium, Sarcina, and Shewanella which are all apart of the common air, soil, and human microbial flora and therefore present no health hazard.
pmid:22053579
fatcat:ma5ozc5rhvhdldqgez36uekd5a
A probable case of Hand-Schueller-Christian's disease in an Egyptian mummy revealed by CT and MR investigation of a dry mummy
2012
Collegium Antropologicum
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2015; you can also visit the original URL.
The file type is application/pdf.
The challenging mission of paleopathologists is to be capable to diagnose a disease just on the basis of limited information gained by means of one or more paleodiagnostic techniques. In this study a radiologic, anthropologic and paleopathologic analysis of an ancient Egyptian mummy through X-rays, CT and MR was conducted. An Ancient Egyptian mummy ("Mistress of the house", Archeological Museum, Zagreb, Croatia) underwent digital radiography, computed tomography and magnetic resonance imaging
pmid:22816232
fatcat:phgup74v6fhhzj5qbgkb26wpxe
more »
... ploying 3-dimensional ultra-short-echo time (UTE) sequence, that allows to image ancient dry tissue. Morphological observations on the skull and pelvis, the stages of epiphyseal union and dental wear indicated that the remains are those of a young adult male. Multiple osseous lytic lesions were observed throughout the spine as well as on the frontal, parietal, and occipital bone, orbital wall and the sella turcica of the sphenoid. Considering the sex and age of the individual and the features of the lesions, the authors propose the diagnosis of Hand-Schueller-Christian's disease. This is the first study to have effectively used MR images in the differential diagnosis of a disease. It also confirmed the CT value in revealing central nervous system involvement just by detecting skeletal lesions. Although the mummy was previously dated to 3rd century B.C. based on the properties of the sarcophagi, the sex of the mummy suggests that it was most probably transferred into these sarcophagi in later times. The mummification techniques used and radiometric data (C14) dated it to 900-790. B.C.
The use of paleo-imaging and microbiological testing in the analysis of antique cultural material: multislice tomography, and microbial analysis of the Trogir Cathedral cope hood depicting St. Martin and a beggar
2013
Acta Medico-Historica Adriatica
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2015; you can also visit the original URL.
The file type is application/pdf.
Paleoradiology is the study of biological and other materials from archeological settings through the use of various medical imaging techniques. Although it is most often used in the scientific study of ancient human remains, it can also be used to study metals, ceramics, paper, and clothes. The aim of this study was to test two paleoimaging techniques (MSCT and mammography) in the analysis of an important Croatian liturgical vestment: the hood of a bishop's cope from St. Lawrence's Treasury in
pmid:23883082
fatcat:lpsjjx46xjfplcacn2ehkjxttq
more »
... Trogir depicting St. Martin and a beggar. To ensure a safe environment for scientists participating in the analysis, a preliminary microbiological analysis was performed, which contributed to the database of microbiological flora found on Croatian archeological remains and relics studied to date. Due to a great amount of metal filaments, the paleoradiological analysis did not produce satisfactory results. However, a digitally enhanced image clearly showed fine metal embroidery of the hood that was not so easily perceived by naked eye. This article argues in favor of expanding paleoradiological studies on materials other than human remains and also of publishing unsatisfactory results, as important lessons for future development of techniques and methods to analyze ancient remains and seek answers about human historical and cultural heritage.
Personalizing Performance Regression Models to Black-Box Optimization Problems
[article]
2021
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Accurately predicting the performance of different optimization algorithms for previously unseen problem instances is crucial for high-performing algorithm selection and configuration techniques. In the context of numerical optimization, supervised regression approaches built on top of exploratory landscape analysis are becoming very popular. From the point of view of Machine Learning (ML), however, the approaches are often rather naive, using default regression or classification techniques
doi:10.1145/3449639.3459407
arXiv:2104.10999v1
fatcat:tz4wsn5yfzgy3b5ocjrp2niwum
more »
... out proper investigation of the suitability of the ML tools. With this work, we bring to the attention of our community the possibility to personalize regression models to specific types of optimization problems. Instead of aiming for a single model that works well across a whole set of possibly diverse problems, our personalized regression approach acknowledges that different models may suite different types of problems. Going one step further, we also investigate the impact of selecting not a single regression model per problem, but personalized ensembles. We test our approach on predicting the performance of numerical optimization heuristics on the BBOB benchmark collection.
Landscape-Aware Fixed-Budget Performance Regression and Algorithm Selection for Modular CMA-ES Variants
[article]
2020
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Automated algorithm selection promises to support the user in the decisive task of selecting a most suitable algorithm for a given problem. A common component of these machine-trained techniques are regression models which predict the performance of a given algorithm on a previously unseen problem instance. In the context of numerical black-box optimization, such regression models typically build on exploratory landscape analysis (ELA), which quantifies several characteristics of the problem.
doi:10.1145/3377930.3390183
arXiv:2006.09855v1
fatcat:5uyyawrdbrfgzddyryfza3wp2y
more »
... ese measures can be used to train a supervised performance regression model. First steps towards ELA-based performance regression have been made in the context of a fixed-target setting. In many applications, however, the user needs to select an algorithm that performs best within a given budget of function evaluations. Adopting this fixed-budget setting, we demonstrate that it is possible to achieve high-quality performance predictions with off-the-shelf supervised learning approaches, by suitably combining two differently trained regression models. We test this approach on a very challenging problem: algorithm selection on a portfolio of very similar algorithms, which we choose from the family of modular CMA-ES algorithms.
The Impact of Hyper-Parameter Tuning for Landscape-Aware Performance Regression and Algorithm Selection
[article]
2021
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Automated algorithm selection and configuration methods that build on exploratory landscape analysis (ELA) are becoming very popular in Evolutionary Computation. However, despite a significantly growing number of applications, the underlying machine learning models are often chosen in an ad-hoc manner. We show in this work that three classical regression methods are able to achieve meaningful results for ELA-based algorithm selection. For those three models -- random forests, decision trees,
doi:10.1145/3449639.3459406
arXiv:2104.09272v1
fatcat:rewlb7xqhjakzgquwoxknhrpqi
more »
... bagging decision trees -- the quality of the regression models is highly impacted by the chosen hyper-parameters. This has significant effects also on the quality of the algorithm selectors that are built on top of these regressions. By comparing a total number of 30 different models, each coupled with 2 complementary regression strategies, we derive guidelines for the tuning of the regression models and provide general recommendations for a more systematic use of classical machine learning models in landscape-aware algorithm selection. We point out that a choice of the machine learning model merits to be carefully undertaken and further investigated.
System architecture design
2016
Artificial intelligence for engineering design, analysis and manufacturing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
The impact of the set-based design on system architecture design has been investigated by Anja Schultze in "Developing Products With Set-Based Design: How to Set Up an Idea Portfolio and a Team Organization ...
Marija Jankovic and Claudia Eckert are exploring these factors in their article "Architecture Decisions in Different Product Classes for Complex Products," which was reviewed independently of this Special ...
Jankovic 216 ...
doi:10.1017/s0890060416000202
fatcat:tnp7nxuavvc45dtnjimdfrxrry
ELEKTROIONOTHERAPY - A NEW PATTERN OF VENOUS ULCERS HEALING
2005
Acta Medica Medianae
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Vrednosti procentualnog pobolj{anja skoreva prikazani su na Grafikonu 2. ...
Procenat pobolj{anja skora simptoma posle sedam dana le~enja iznosio je 21,05 sa najve}om vredno{}u od 92,10 sedme nedelje, odnosno na kraju le~enja, i procentom pobolj{anja ukupnog skora, koji posle 7 ...
Literatura
ELEKTROIONOTHERAPY ‡ A NEW PATTERN OF VENOUS ULCERS HEALING
Aleksandar Jankovic, Milenko Stanojevic and Ivana Binic Venous ulcers are frequent, chronic disease which requires the constant ...
doaj:b60776adebae41c49a955a6d3ef60656
fatcat:3yyjnsyr5na6bemlmgyt54cina
User Experience and Customer Experience as a Solution for Gaining Competitive Advantages of the Company
2019
Proceedings of the 24th International Scientific Conference Strategic Management and Decision Support Systems in Strategic Management
unpublished
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
The user experience becomes a very important factor when companies want to be better than competition and keep customer loyalty. This paper analyzes the relation between the User Experience (UX) and the Customer Experience (CX) in terms of the impact they have on the overall satisfaction of users. This study aims to determine which of the two experiences is more relevant and has more impact on the user's satisfaction with the company. UX and CX are very similar concepts, but the terms are not
doi:10.46541/978-86-7233-380-0_24
fatcat:s6c2ik3h4bh2zpe6h66iersmq4
more »
... terchangeable. Every company has the task of satisfying the needs of the users and providing more than user expectations. The purpose of this paper is to show how and how much UX affects the CX, and inversely. This study analyze their significance to exploit the user experience for receive competitive advantages.
INTRODUCTION MODEL OF COST PROCESS ACCOUNTING IN HOTEL INDUSTRY
MODEL UVOĐENJA OBRAČUNA TROŠKOVA PROCESA U HOTELSKU INDUSTRIJU
2005
Tourism and hospitality management
MODEL UVOĐENJA OBRAČUNA TROŠKOVA PROCESA U HOTELSKU INDUSTRIJU
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Tablica 3 Kapacitet hotela
REZU L T A T O P E R A T IV N A O D J E L J E N J A S M J E Š T A J
ZAKLJUČAK I PRIJEDLOZI ZA DALJNJA ISTRAŽIV ANJA Dizajn, kompleksnost i detaljnost obračuna troškova procesa ...
Janković: MODEL UVOĐENJA OBRAČUNA TROŠKOVA PROCESA U HOTELSKU INDUSTRIJU procesa. ...
doi:10.20867/thm.11.1.18
fatcat:i7cvdsko6ba7dnmlslcfestwfi
INFLUENCE OF 4A ZEOLITE SYNTHESIS PROCESS PARAMETERS ON WATER SORPTION CAPACITY
2014
Journal of Engineering & Processing Management
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Janković, A.Tanasijević, R. Filipović, M. Perušić ...
Janković, A. Tanasijević, R. Filipović, M. Perušić Slika1. ...
doaj:e49e883259f942f382e83d920802c493
fatcat:gge5g25dgjha7kghiofrnjj4ty
HYPOLIPEMIC THERAPY AND LOW SERUM CHOLESTEROL CONCENTRATION
2004
Acta Medica Medianae
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
{anja. ...
Klini~ki se manifestuje u vidu pove}anja kreatin fosfoki naze i mialgije pra}ene slabo{}u mi{i}a. ...
doaj:30c08d746ec0409085d6c436761f44ad
fatcat:5vj4hay3ejfztjq54r42uyjj4u
Characteristics of Powershift gear of agricultural tractors
Karakteristike Powershift menjača kod poljorivrednih traktora
2019
Poljoprivredna tehnika
Karakteristike Powershift menjača kod poljorivrednih traktora
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
LITERATURA [1] Izveštaj Projekta TR-35039.(2016).Ministarstva prosvete, nauke i tehnološkog razvoja Srbije. [2] Janković, A., Radonjić, D., Glišović, J., Radonjić, R. (2011). ...
Ako se veza uspostavi preko Datatronik sistema, može se podesiti i vreme obavlјanja određene funkcije 16. ...
doi:10.5937/poljteh1904073b
fatcat:i5d4kuyjebgdrj2dtvgn7tijxq
« Previous
Showing results 1 — 15 out of 121 results