- document
-
Bavdaz, Alenka (author)In the field of Information Retrieval (IR), test collections are an important part of IR system evaluation. When evaluating IR systems on a test collection, the results may not accurately represent the performance of the systems on topics not contained in that test collection. Therefore, we want to get a sense of the accuracy of results on a...master thesis 2018
- document
-
Dahlberg, E.A. (author), Wehner, S.D.C. (author)Stabilizer states form an important class of states in quantum information, and are of central importance in quantum error correction. Here, we provide an algorithm for deciding whether one stabilizer (target) state can be obtained from another stabilizer (source) state by single-qubit Clifford operations (LC), single-qubit Pauli measurements...journal article 2018
- document
-
Borst, Sander (author)The cap set problem consists of finding the maximum size cap sets, i.e. sets without a 3-term arithmetic progression in F₃. In this thesis several known results on the behavior of this number as n → ∞ are presented. In particular we discuss a reformulation by Terence Tao and Will Sawin of a proof found by Dion Gijswijt and Jordan Ellenberg. It...bachelor thesis 2018
- document
-
Wang, K. (author), Khodabandeh, A. (author), Teunissen, P.J.G. (author)In PPP-RTK network processing, the wet component of the zenith tropospheric delay (ZTD) cannot be precisely modelled and thus remains unknown in the observation equations. For small networks, the tropospheric mapping functions of different stations to a given satellite are almost equal to each other, thereby causing a near rank-deficiency...journal article 2018
- document
-
Tintarev, N. (author), Sullivan, Emily (author), Guldin, Dror (author), Qiu, S. (author), Odjik, Daan (author)Recommender systems for news articles on social media select and filter content through automatic personalization. As a result, users are often unaware of opposing points of view, leading to informational blindspots and potentially polarized opinions. They may be aware of a topic, but only be exposed to one viewpoint on this topic. However,...conference paper 2018
- document
-
Yin, J. (author), Unal, C.M.H. (author), Schleiss, M.A. (author), Russchenberg, H.W.J. (author)A novel algorithm is put forward to separate radar target and moving clutter based on a combination of the low-rank matrix optimization (LRMO) and the decision tree. Similar to the moving object detection in the field of automated video analysis, the proposed separation method, which is carried out in the range-Doppler domain, makes use of...journal article 2018
- document
-
Mohammadi, Majid (author), Hofman, Wout (author), Tan, Y. (author)Comparing ontology matching systems are typically performed by comparing their average performances over multiple datasets. However, this paper examines the alignment systems using statistical inference since averaging is statistically unsafe and inappropriate. The statistical tests for comparison of two or multiple alignment systems are...journal article 2018
- document
-
Liang, R. (author), Bai, Y. (author), Lin, H.X. (author)Subspace segmentation is a fundamental issue in computer vision and machine learning, which segments a collection of high-dimensional data points into their respective low-dimensional subspaces. In this paper, we first propose a model for segmenting the data points from incomplete and noisy observations. Then, we develop an inexact splitting...journal article 2018
- document
-
Hirschhorn, Fabio (author)The paper outlines the author’s experience employing the Delphi method, using as an example a particular application of the Delphi in the field of public transport research. Attention is given to aspects such as the choice of method, selection of experts, design of questionnaires, interaction between survey coordinator and participants, and also...journal article 2018
- document
-
McPhail, C. (author), Maier, H. R. (author), Kwakkel, J.H. (author), Giuliani, M (author), Castelletti, A (author), Westra, S. (author)Robustness is being used increasingly for decision analysis in relation to deep uncertainty and many metrics have been proposed for its quantification. Recent studies have shown that the application of different robustness metrics can result in different rankings of decision alternatives, but there has been little discussion of what potential...journal article 2018
- document
-
Lu, Feng (author), Tintarev, N. (author)Diversity-based recommender systems aim to select a wide rangeof relevant content for users, but diversity needs for users withdifferent personalities are rarely studied. Similarly, research onpersonality-based recommender systems has primarily focused onthe ‘cold-start problem’; few previous works have investigated howpersonality influences...conference paper 2018
- document
-
Varnai, Peter (author)We study the important mathematical problem of approximating the inverse of low Kronecker-rank matrices in this same form. A traditional alternating least squares (ALS) scheme for solving such problems is presented, and we discuss two efficient solutions to the subproblems arising in the corresponding iterations. The first relies on a least...master thesis 2017
- document
-
Berghuis, Veerle (author)ASML produces TwinScan NXT machines that are used for the production of microchips. The machines ensure that an accurate pattern of DUV-light passes a lens and that it is projected as accurate as possible on the wafer. To ensure that the focal point of the converged DUV-light falls exactly onto the wafer, the leveling functionality is of great...master thesis 2017
- document
-
Cederhout, Quinten (author)In this dissertation we look at the seriation problem and the applications of this problem. Given a set of items, we try to find an ordering based on the similarity between the items. We start by explaining the mathematical theory behind the seriation problem. Then we describe a couple of different methods that can be used to find a solution for...bachelor thesis 2017
- document
-
Noorbergen, Lars J. (author), Abels, H.A. (author), Hilgen, Frederik J. (author), Robson, Brittany E. (author), de Jong, Edwin (author), Dekkers, Mark J. (author), Krijgsman, Wout (author), Smit, Jan (author), Collinson, Margaret E. (author), Kuiper, Klaudia F. (author)Fluvial systems in which peat formation occurs are typified by autogenic processes such as river meandering, crevasse splaying and channel avulsion. Nevertheless, autogenic processes cannot satisfactorily explain the repetitive nature and lateral continuity of many coal seams (compacted peats). The fluvial lower Palaeocene Tullock Member of...journal article 2017
- document
-
Sinquin, B. (author), Verhaegen, M.H.G. (author)In this paper we address the identification of (2D) spatial-temporal dynamical systems governed by the Vector Auto-Regressive (VAR) form. The coefficient-matrices of the VAR model are parametrized as sums of Kronecker products. When the number of terms in the sum is small compared to the size of the matrix, such a Kronecker representation...conference paper 2017
- document
-
Shetrit, M. (author)In this master thesis a data based Product Service System is proposed, which will trigger and raise awareness regarding the unperceived environmental factors affecting our life quality and enable users to take action. The Atlas Network serves as a boundary object bridging the gap between our perception of environmental effects and their harmful...master thesis 2016
- document
-
de Winter, J.C.F. (author), Gosling, S.D. (author), Potter, J.P. (author)The Pearson product-moment correlation coefficient (r<sub>p</sub>) and the Spearman rank correlation coefficient (r<sub>s</sub>) are widely used in psychological research. We compare r<sub>p</sub> and r<sub>s</sub> on 3 criteria: variability, bias with respect to the population value, and robustness to an outlier. Using simulations across low...journal article 2016
- document
-
Mohammadi, Majid (author), Hofman, Wout (author), Tan, Y. (author)This paper proposes statistical approaches to test if the difference between two ontology matchers is real. Specifically, the performances of the matchers over multiple data sets are obtained and based on their performances, the conclusion can be drawn whether one method is better than one another or not. To do so, the paired t-test and...poster 2016
- document
-
Velsink, H. (author)This paper gives a linearised adjustment model for the affine, similarity and congruence transformations in 3D that is easily extendable with other parameters to describe deformations. The model considers all coordinates stochastic. Full positive semi-definite covariance matrices and correlation between epochs can be handled. The determination...journal article 2015