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k-Anonymization by Freeform Generalization

Katerina Doka, Mingqiang Xue, Dimitrios Tsoumakos, Panagiotis Karras
2015 Proceedings of the 10th ACM Symposium on Information, Computer and Communications Security - ASIA CCS '15  
Conventional research using the k-anonymity model has resorted to publishing data in homogeneous generalized groups.  ...  We formulate the problem of maximal-utility kanonymization by freeform generalization as a network flow problem. We develop an optimal solution therefor using Mixed Integer Programming.  ...  Acknowledgments We thank Wai Kit Wong and Arnon Mazza, who shared the codes for NH and k-concealment, respectively, as well as Aristides Gionis and Jonathan Eckstein for fruitful discussions on this topic  ... 
doi:10.1145/2714576.2714590 dblp:conf/ccs/DokaXTK15 fatcat:4wduq7nugbh7dmlcvdbnrpivey

Parameter-driven freeform deformations [article]

Y. Song, J.S.M. Vergeest, D.P. Saakes
2003 Eurographics State of the Art Reports  
Those templates can be defined by the user or simply derived from freeform feature concepts.  ...  To achieve this, different from existing freeform deformation methods, a deformable template defined by intrinsic parameters is used as the bridge to link the original freeform shape and the user actions  ...  ( Valuable comments from the anonymous reviewers are appreciated.  ... 
doi:10.2312/egs.20031066 fatcat:zzt65wqwxbc7za5jd6uicmdlv4

Intersecting a freeform surface with a general swept surface

Joon-Kyung Seong, Ku-Jin Kim, Myung-Soo Kim, Gershon Elber, Ralph R. Martin
2005 Computer-Aided Design  
By computing the intersection between a freeform surface and each cross-sectional curve in the family, we can solve the intersection problem.  ...  We present efficient and robust algorithms for intersecting a rational parametric freeform surface with a general swept surface.  ...  Acknowledgements The authors would like to thank the anonymous reviewers for their useful comments.  ... 
doi:10.1016/j.cad.2004.10.006 fatcat:yn767egerzgpzburcghpddya2q

FF-Anonymity: When Quasi-identifiers Are Missing

Ke Wang, Yabo Xu, Ada W. C. Fu, Raymond C. W. Wong
2009 Proceedings / International Conference on Data Engineering  
In this paper, we study how such attributes would impact the privacy model and data anonymization.  ...  We identify a new form of attacks, called "freeform attacks", that occur on such data without explicit QI attributes and SA attributes.  ...  We can show that Problem I is NP-hard by a reduction from the optimal k-anonymity problem to Problem I.  ... 
doi:10.1109/icde.2009.184 dblp:conf/icde/WangXFW09 fatcat:w2fvjfgtq5f2ho2hhh5hskatoe

A freeform shape optimization of complex structures represented by arbitrary polygonal or polyhedral meshes

Jie Shen, David Yoon
2004 International Journal for Numerical Methods in Engineering  
In this paper we propose a new scheme for freeform shape optimization on arbitrary polygonal or polyhedral meshes.  ...  polygonal meshes, which supports multi-resolution shape optimization and does not require CAD information; (3) freeform shape optimization of arbitrary polygonal or polyhedral meshes.  ...  Thanks also go to anonymous reviewers who provided many valuable comments for improving the quality of this paper.  ... 
doi:10.1002/nme.1050 fatcat:caqkkv6ps5exlf5qhdm2hpnyy4

Ensemble CCA for Continuous Emotion Prediction

Heysem Kaya, Fazilet Çilli, Albert Ali Salah
2014 Proceedings of the 4th International Workshop on Audio/Visual Emotion Challenge - AVEC '14  
For prediction, we use Canonical Correlation Analysis (CCA) in affect sub-challenge (ASC) and Moore-Penrose generalized inverse (MPGI) in depression sub-challenge (DSC).  ...  The authors thank the anonymous reviewers for beneficial suggestions. The first author is a member of Faculty Member Training Program (ÖYP) supervised by the Turkish Higher Education Council (YÖK).  ...  This study is partly supported by Bogazici University research project BAP 6531.  ... 
doi:10.1145/2661806.2661814 dblp:conf/mm/KayaCS14 fatcat:rahuwjxrevfzbexzeef5a4wsvy

The Convex Hull of Freeform Surfaces

J.-K. Seong, G. Elber, J. K. Johnstone, M.-S. Kim
2004 Computing  
We present an algorithm for computing the convex hull of freeform rational surfaces.  ...  Acknowledgments We would like to thank the anonymous referees for useful comments. We are appreciative of the  ...  the corner point Sðs 0 ; t 0 Þ and is generated by the curve SðuðaÞ; vðaÞÞ on the surface S.  ... 
doi:10.1007/s00607-003-0055-x fatcat:by237nrvxngmjo3zqzxyf5c3sy

The Convex Hull of Freeform Surfaces [chapter]

J.-K. Seong, G. Elber, J. K. Johnstone, M.-S. Kim
2004 Geometric Modelling  
We present an algorithm for computing the convex hull of freeform rational surfaces.  ...  Acknowledgments We would like to thank the anonymous referees for useful comments. We are appreciative of the  ...  the corner point Sðs 0 ; t 0 Þ and is generated by the curve SðuðaÞ; vðaÞÞ on the surface S.  ... 
doi:10.1007/978-3-7091-0587-0_14 fatcat:algighb42bgvjjobt2vi6m3oaq

Line art illustrations of parametric and implicit forms

G. Elber
1998 IEEE Transactions on Visualization and Computer Graphics  
A technique is presented for line art rendering of scenes composed of freeform surfaces.  ...  The author is grateful to the anonymous reviewers of this paper for their valuable remarks that greatly improved this paper.  ...  ACKNOWLEDGMENTS This work was supported in part by the Fund for Promotion of Research at the Technion, Haifa, Israel. The model of the bulb (Fig. 8a) was created by Livshin Michael.  ... 
doi:10.1109/2945.675655 fatcat:3lmgdyvawzaufan6wpkwndozku

Sweep-based Freeform Deformations

Seung-Hyun Yoon, Myung-Soo Kim
2006 Computer graphics forum (Print)  
We propose a sweep-based approach to the freeform deformation of three-dimensional objects.  ...  Acknowledgements The authors would like to thank the anonymous reviewers for their invaluable comments.  ...  This work was supported by the Korean Ministry of Information and Communication (MIC) under the Program of IT Research Center on CGVR.  ... 
doi:10.1111/j.1467-8659.2006.00968.x fatcat:nmparpjzjzdznfrixigcckcnoe

Heterogeneous k-anonymization with high utility

Katerina Doka, Mingqiang Xue, Dimitrios Tsoumakos, Panagiotis Karras, Alfredo Cuzzocrea, Nectarios Koziris
2015 2015 IEEE International Conference on Big Data (Big Data)  
Applying k-anonymity in practice, though, incurs severe loss of data utility, thus limiting its effectiveness and reliability in real-life applications and systems.  ...  Following this approach, in this paper we provide a set of algorithms that ensure high-utility k-anonymity, via solving an equivalent graph processing problem.  ...  A freeform generalization is illustrated by the graph in Figure 1 (d). The advantages of our approach are illustrated by the example in Table I .  ... 
doi:10.1109/bigdata.2015.7363963 dblp:conf/bigdataconf/DokaXTKCK15 fatcat:gzqtjme7gbgypplcbwmwsokwaa

Round robin comparison study on the form measurement of optical freeform surfaces

Ines Fortmeier, Reyko Schachtschneider, Vit Ledl, Ondrej Matousek, Jens Siepmann, Antonia Harsch, Rolf Beisswanger, Youichi Bitou, Yohan Kondo, Michael Schulz, Clemens Elster
2020 Journal of the European Optical Society-Rapid Publications  
Three optical freeform surfaces were used for the comparison measurements, where two specimens were measured by five instruments and one specimen by four instruments.  ...  A round robin comparison of freeform form measurements was carried out by the project partners and stakeholders of a European metrology research project.  ...  The EMPIR is jointly funded by the EMPIR participating countries within EURAMET and by the European Union (15SIB01: FreeFORM).  ... 
doi:10.1186/s41476-019-0124-1 fatcat:qpuwzy6tdnddpohldcb26uclyu

Utility Enhancement of Deficient Relational Recordset Anonymization

Kishore Samraj, Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya University, Rajesh Appusamy, Ramya Shankar, C.Abdul Hakeem College of Engineering and Technology, C.Abdul Hakeem College of Engineering and Technology
2018 International Journal of Intelligent Engineering and Systems  
We explore the characteristics of null value contamination on generalization, driven by these characteristics, we formulate an Enhanced ARX Anonymization-(𝐾, 𝑅 𝑛 𝑁 )Anonymity Model to preserve data  ...  The results obtained by executing our framework over the real -world dataset proved to be optimized in providing better tradeoff between utility and privacy for deficient recordsets in Cell oriented Anonymization  ...  k-anonymization and proposed freeform generalization for higher utility.  ... 
doi:10.22266/ijies2018.1231.14 fatcat:nevngzctf5danffgtndmeujqna

The Impact of Peer Assessment on Academic Performance: A Meta-analysis of Control Group Studies

Kit S. Double, Joshua A. McGrane, Therese N. Hopfenbeck
2019 Educational Psychology Review  
Here, we present a meta-analysis (54 studies, k = 141) of experimental and quasiexperimental studies that evaluated the effect of peer assessment on academic performance in primary, secondary, or tertiary  ...  However, there were few studies where feedback was freeform (n = 9, k =29). The results were unchanged when education level was controlled for in the meta-regression.  ...  In this article, we adopt the term peer assessment, as it more generally refers to the method of peers assessing or being assessed by each other, whereas the term feedback is used when we refer to the  ... 
doi:10.1007/s10648-019-09510-3 fatcat:ill5uotcfvb75h54uz5bvkkbmu

Interactive design and simulation of tubular supporting structure

Ran Luo, Lifeng Zhu, Weiwei Xu, Patrick Kelley, Vanessa Svihla, Yin Yang
2015 Graphical Models  
With the parametrization of the swept surface, a quadrilateral mesh consisting of nine-node general shell elements is automatically generated and the stress distribution of the structure is simulated using  ...  Together with the domain decomposition method, our system is able to provide interactive feedback for parametric freeform tube editing.  ...  In our system, the geometric design of freeform supporting tubes is motivated by these existing studies.  ... 
doi:10.1016/j.gmod.2015.05.002 fatcat:plpy5h2qrbc2vplikrqj6s54wm
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