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Visual Approaches for Exploratory Data Analysis: A Survey of the Visual Assessment of Clustering Tendency (VAT) Family of Algorithms

Dheeraj Kumar, James C. Bezdek
2020 IEEE Systems Man and Cybernetics Magazine  
An extension of the VAT/iVAT algorithms to asymmetric matrices [called asymmetric iVAT (asiVAT)] was proposed by Havens et al. [25] .  ...  Asymmetric iVAT [13].  ... 
doi:10.1109/msmc.2019.2961163 fatcat:jvqnvhjgjndyrn3cx6ehcigueu

Visual Assessment of Clustering Tendency for Incomplete Data

Laurence Anthony F. Park, James C. Bezdek, Christopher Leckie, Ramamohanarao Kotagiri, James Bailey, Marimuthu Palaniswami
2016 IEEE Transactions on Knowledge and Data Engineering  
The iVAT (asiVAT) algorithms reorder symmetric (asymmetric) dissimilarity data so that an image of the data may reveal cluster substructure.  ...  We choose a best method using contaminated versions of the complete Iris data, for which the desired results are known.  ...  In summary, IBKR promises to be a useful extension of the VAT/iVAT family of cluster heat maps to the case of symmetric or asymmetric input dissimilarity data with missing values.  ... 
doi:10.1109/tkde.2016.2608821 fatcat:qbwl53w3wnh7hjoklmmxwncnfa

Alternative Blockmodelling [article]

Oscar Correa and Jeffrey Chan and Vinh Nguyen
2019 arXiv   pre-print
Our methodology is presented through two approaches, (a) inclusion of cannot-link constraints and (b) dissimilarity between image matrices.  ...  Therefore, our proposed problem aims to discover a secondary blockmodel representation of a network that is of good quality and dissimilar with respect to a given blockmodel.  ...  In this figure, we have dropped iVAT plots due to space reasons.  ... 
arXiv:1908.02575v1 fatcat:mkz5dzjp2bfrxaxbsqik3rtdqy

Author index to volumes 301–400

2005 Linear Algebra and its Applications  
Pinzoni, Asymmetric algebraic Riccati equation: A homeomorphic parametrization of the set of solutions 329 (2001) 137 Ferrari, L. and R.  ...  Elduque, Models of the octonions and G 2 371 (2003) 333 Benkovič, D., Jordan derivations and antider- ivations on triangular matrices 397 (2005) 235 Benlarbi Delai, M., Description de AlgLatT/ W(  ... 
doi:10.1016/s0024-3795(05)00125-4 fatcat:mrc33u36wnh57lis5jwcb7bmaa

Gene conversion, linkage, and the evolution of multigene families

T Nagylaki
1988 Genetics  
The ultimate rate and pattern of convergence to equilibrium are within O(epsilon 2) and O(epsilon), respectively, of that of the same simple model.  ...  ., all the crossover rates greatly exceed epsilon, though they may still be much less than 1/2), the linkage disequilibria are reduced to O(epsilon) in a time of O(-ln epsilon).  ...  The ultimate rate and pattern of convergence are within O(¢’) and O(¢), respectively, of those for interchromosomal conversion, and their der- ivation is unaltered.  ... 
doi:10.1093/genetics/120.1.291 fatcat:do3mely33nch5aeck25knmixsi

Report Cards: The Impact of Providing School and Child Test Scores on Educational Markets

Tahir Andrabi, Jishnu Das, Asim Ijaz Khwaja
2017 The American Economic Review  
The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues.  ...  An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly.  ...  To design the test, an extensive pilot was carried out to identify lower and upper limits of learning in the population and analyze the validity and reliability of the instrument used.  ... 
doi:10.1257/aer.20140774 fatcat:qhoqn552xvaxdhydepy5gdflni

URSI National Committee Report: Commission 6. Radio Waves and Circuits. Part 1. Information Theory and Coding

P. Elias
1960 Journal of Research of the National Bureau of Standards Section D Radio Propagation  
The kind of technique used by Shannon [1957J can be extended to obtain upper and lower bounds to the rate of exponential decay of P with N.  ...  It also has the 'valuable effect of reducing the amount of computation required in decoding, since it is easier to replace missing digits than to correct. inc?rrect ones.  ...  scattering", and addiLional references (particularly to the Ii teraturC' of quantum m echanics), arc given by Lax [1951, 1952] .  ... 
doi:10.6028/jres.064d.076 fatcat:as4o4awtpzaevjutixsygjqbpm

Surface-enhanced Raman scattering

A Otto, I Mrozek, H Grabhorn, W Akemann
1992 Journal of Physics: Condensed Matter  
The latter mechanism proceeds b y increased electron-photon coupling at an atomically rough surface and by temporary charge transfer to orbitals of the adsorbates.  ...  On the basis of different types of experiments, we develop implicitly the model of surfaceenhanced Raman scattering (SERS) of adsorbates on metal s u r f a c g .  ...  to our results from cold-deposited films (see section 5.2).  ... 
doi:10.1088/0953-8984/4/5/001 fatcat:5jqmd6yzgbgkhfvfczap5gsqe4

Separate modifiability, mental modules, and the use of pure and composite measures to reveal them

Saul Sternberg
2001 Acta Psychologica  
Acknowledgements This paper was inspired by an invitation to contribute to the symposium`L ooking for Stages'' in August 1998, honoring Andries F. Sanders.  ...  Parts of it reect ideas developed by Seth Roberts, and many fruitful discussions with him.  ...  Statistical issues The tests of statistical signi®cance that are most familiar to psychologists are asymmetric: they force us to assume that there is no eect of a factor ± invariance, the``null hypothesis  ... 
doi:10.1016/s0001-6918(00)00045-7 pmid:11256336 fatcat:n7tmylxtsbbbjlr7u4rntr445a

The Influence of Soil Compaction Upon the Thermodynamics of Soil Moisture

James E. Box
1961
To the end of the latter the mathematics of thermodynamics has been applied in these studies of water retention in soils.  ...  The challenge is broad in scope and extends from the field problems of large irrigation projects to the atomic scale of the solid-liquid interface.  ...  of surface ions i s highly asymmetrical.  ... 
doi:10.26076/6449-9a04 fatcat:sgijxvbwrnelhpqtdeaie4scse

The Society for Investigative Dermatology, Inc. and European Society for Dermatological Research Joint International Meeting

1983 Journal of Investigative Dermatology  
MC der ivation from keratinocytes.  ...  The r oles of fibronectin, moreover, ru·e not restricted to mesen- polyacrylamide gel electr ophoresis of solubiiized matrices isolated from chym al ce lls, for t here is a population of this  ... 
doi:10.1111/1523-1747.ep12534716 fatcat:ihnlvu4fzzgmxodwvraznocc3y

Abstracts Presented at the International Neuropsychological Society, the Swiss Neuropshchological Society (SVNP), and the German Neuropsychological Society (GNP) Meeting, July 26–30, 2006, Zurich, Switzerland

2006 Journal of the International Neuropsychological Society  
, suggest an asymmetrical cortical regulation of impulse control.  ...  Further, the same prefrontal cortical area can be act ivated by different demands so that the area can solve a wide variety of problems.  ...  A Word of Caution Relating to the Interpretation of fMRI Data in Demetia.  ... 
doi:10.1017/s1355617706069955 fatcat:weo5fxgnqja2tlehcvrqmenrqe

Thirty-Fifth Annual Meeting February 24–28, 1991 Moscone Center San Francisco, California

1991 Biophysical Journal  
We also have begun to study the functional properties of these receptors using the ion-specific fluorescent probe fura-2 to measure ligand-evoked intracellular calcium changes.  ...  The ability of the classical nicotine antagonist, decamethonium, to attenuate these calcium increases is consistent with the involvement of nicotine receptor activation in the response.  ...  Reexposure of cell cultures to X/XO within 24 hrs failed to elicit any beat rate change even after extensive washing of the cells.  ... 
doi:10.1016/s0006-3495(91)82260-3 fatcat:aud6qyioi5bz3am4wefumxfq2q

Penilaian Kualiti Laporan EIA Dalam Aspek Kajian Hakisan Tanah [article]

Abdul Mahmud
2020 Figshare  
The scale of measurement 0 to 5 has been used to rating score quality for each item. 35 samples of EIA report for housing projects from the year 2012 to 2016 were evaluated.  ...  This study found about 22 of the EIA report achieve satisfactory level (3.00 ). ESCP conceptual has found very poor quality. Most of the ESCP plan fail to shows the earthwork to be conduct in stages.  ...  Matric suction is highly increased at the crest of the slope due to pumping.  ... 
doi:10.6084/m9.figshare.12095736 fatcat:fzsit3wyqjc3fni4no4zzopz5e

Implementable algorithms for stochastic nonlinear programs with applications to portfolio selection and revision [article]

Jarl Gunnar Kallberg
1979
The extensions (and subsequent advantages) are analogous to those developed for the one period problem.  ...  Here the investor has a wealth allotment to be allocated to a number of possible risky investments with the objective of maximizing the expected utility of terminal wealth.  ...  period covariance matrices, and (,Y.^0,I^^) E^,...  ... 
doi:10.14288/1.0094923 fatcat:dtpa7tqzvnb47omkowfg3bnv5i
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