taxonomy of data visualization methods

... the assessment of data visualization Drawing analogy from the linear task of an online shopping cart with an information retrieval function within data visualization, the core of the efficiency ... information visualization techniques as a group • Conveyance – All data visualization techniques conveyed the same information of the identical hierarchical dataset of 53 files and folders In the case of ... order of sections as well as their randomized set of visualization techniques and corresponding task retrieval questions Instead of using the full set of 11 visualizations, randomized subsets of...

Ngày tải lên: 07/03/2014, 17:20

... even a majority of instances of a particular cancer Rather, we expect that a number of exposures and characteristics of children each contribute to a proportion of instances of a particular cancer ... understanding the causes of these cancers within populations of children The concept of multiple causation has direct implications for the interpretation of research on the causes of cancer Suppose ... the slope of the line in the above equation is equal to zero The latter hypothesis is tested using the t distribution of m/SEm with the number of degrees of freedom equal to the number of calendar...

Ngày tải lên: 29/03/2014, 01:20

... snapshot of some of the current uses of data mining in a variety of industries It also offers an overview of how data mining can be applied to topics where the primary focus is not tables of data, ... deployment of data mining applications can be found in Hornick et al (2006) CHAPTER DATA VISUALIZATION 2.1 OVERVIEW Data visualization is critical to understanding the content of the data Data analysts ... that software professionals could use the book to gain insight into the principles of data visualization and advanced data mining algorithms in order to help in the development of new software...

Ngày tải lên: 03/04/2014, 12:22

... dimension reduction, most of the research on time-varying visualization use this choice This is perhaps because visualization of volumetric data preceded that of time-varying data, and a natural step ... rendering of the Yakima terrain data set consisting of 1,201 × 1,201 single-byte integer height values Figure 18 shows the corresponding Fig 17 Global view of a fly-over of Grand Canyon data set ... construction of transfer function for volume rendering of scientific data [21, 26] A more extensive discussion of the use of the Reeb graph and its variations in geometric modeling and visualization...

Ngày tải lên: 29/05/2014, 17:20

... not reported by any of the four evaluation methods: date of start of the test; method of preparation of stock solutions; the recovery efficiency of the method; the limit of quantification in ... (Summary of the evaluation of existing reliability evaluation methods and Summary of the reliability evaluation of the non-standard test data sections) Hypothesis and endpoint Usefulness of proposed ... use of non-standard data for risk assessment purposes Method This study is divided into two parts: (1) an evaluation of the usefulness of four methods for reliability evaluation of test data...

Ngày tải lên: 21/06/2014, 03:20

... experiment descriptions of single datasets and dataset clusters by moving the mouse over the dataset clustering tree Additional features of the tool reveal finer details of underlying data and create ... MEM: number of incorporated datasets Figure Mini Chromosome Maintenance (MCM) subunits Increasing the number of datasets for MEM queries improves prediction of Increasing the number of datasets ... relevant datasets relies on the user's knowledge of genes that are likely to have similar expression profiles Furthermore, it currently features relatively small number of datasets, all of them...

Ngày tải lên: 09/08/2014, 20:21

... methods in the case of overlapping data sets Moreover, we discuss the issue of complete versus incomplete data Methods Phylogenetic Reconstruction from Multiple Data Sets We evaluate a list of ... incomplete, gene data 2500 2000 1500 1000 500 data sets length Page of 17 Figure Large data set (green plant data) Distribution of taxa and gene length in the 254 data sets On average, 15.8% of the genes ... by one of the bold letters given in each of the four categories Note that not all combinations were tested Page of 17 The small data set is given by the parameters of the crocodile data of Gatesy...

Ngày tải lên: 12/08/2014, 17:20

... problem of the cartographic visualization process Explain the content of Figure 6.8 in terms of that of Figure 3.1 Which four main types of thematic data can be distinguished on the basis of their ... growth of a city, a three-dimensional view of a building or a mountain, or even a real-time map display of traffic conditions Other examples include ‘quick and dirty’ views of part of the database, ... by determining their nature Data will be of a qualitative or quantitative nature The first type of data is also called nominal data Nominal data exist of discrete, named values without a natural...

Ngày tải lên: 21/10/2014, 10:09

... conducted in the field of data- based methods for process modeling, control and monitoring An overview of the current progress of data- based methods is presented A newly developed databased method, ... monitoring: data- based methods and model-based methods In what follows, the basic theories of the two methods will be introduced 2.3.1 Data- based methods Multivariate statistical analysis is a popular data- based ... Parameters of polymerization reaction k1 , k , k Kinetic parameters of van de Vusse reactor k , k max Number of minimum and maximum relevant data sets L Level of reactor l Number of nearest neighbours...

Ngày tải lên: 30/09/2015, 05:58

... throughput data) and 765 (SRA Datasets B taurus, 2014) SRA experiments (NGS data) In case of S scrofa, there are 8,848 GEO datasets (GEO Datasets S scrofa, 2014) and 1,966 SRA experiments (SRA Datasets ... and transformation of data, data storage and management, data access provisions, data analysis and data/ result presentation (Palace, 1996) There are two major categories of data mining tasks: ... Knowledge discovery Data mining is the process of examining volumes of data in multiple contexts to abstract the data into useful information (Palace, 1996) The five major components of data mining are:...

Ngày tải lên: 25/11/2015, 13:26

... System .Data. DataTable(); System .Data. DataTable namedTable = new System .Data. DataTable("Customer"); Visual Basic Dim unnamedTable As New System .Data. DataTable() Dim namedTable As New System .Data. DataTable("Customer") ... implementation of a DataTable object is somewhat different Instead of one large grid layout, ADO.NET maintains tabular data as a collection of collections Each DataTable object contains a collection of ordered ... Normalization is the process of crafting tables that ensure data integrity and take advantage of the processing power of relational database systems E.F Codd, inventor of the relational database model, proposed...

Ngày tải lên: 03/10/2013, 00:20

... sums of integer powers of the values Best known is the mean of the values x1 , , xN , x= N N xj (14.1.1) j=1 which estimates the value around which central clustering occurs Note the use of ... tendency, the moments of a distribution, the median and mode In §14.2 we learn to test whether different data sets are drawn from distributions with different values of these measures of central tendency ... characterize the degree of correlation in some simple ways The distinction between parametric and nonparametric (rank) methods is emphasized Section 14.8 introduces the concept of data smoothing, and...

Ngày tải lên: 20/10/2013, 17:15

... significance of a difference of means is not the number of standard deviations that they are apart, but the number of so-called standard errors that they are apart The standard error of a set of values ... definitions into sums of various powers of the data, e.g., the familiar    N  x2  − N x2  ≈ x2 − x2 (14.1.7) Var(x1 xN ) = j N −1 614 Chapter 14 Statistical Description of Data Semi-Invariants ... measure of the data s width around its central value: The values obtained from equations (14.1.2) or (14.1.3) will not converge with increased numbers of points, nor show any consistency from data...

Ngày tải lên: 24/10/2013, 15:15

... for N − degrees of freedom The routine is #include void tptest(float data1 [], float data2 [], unsigned long n, float *t, float *prob) Given the paired arrays data1 [1 n] and data2 [1 n], this ... void ftest(float data1 [], unsigned long n1, float data2 [], unsigned long n2, float *f, float *prob) Given the arrays data1 [1 n1] and data2 [1 n2], this routine returns the value of f, and its significance ... can be given lists of individual burnout times or of stellar positions The data sets on chicken pox and educational level are binned, since we are given tables of numbers of events in discrete...

Ngày tải lên: 24/10/2013, 15:15

... the data sets are drawn from the same distribution Small values of prob show that the cumulative distribution function of data1 is significantly different from that of data2 The arrays data1 and data2 ... of Data Next we consider the case of comparing two binned data sets Let Ri be the number of events in bin i for the first data set, Si the number of events in the same bin i for the second data ... for the cases of one and two distributions: 626 Chapter 14 Statistical Description of Data If we are not done Next step is in data1 Next step is in data2 Compute significance } Both of the above...

Ngày tải lên: 28/10/2013, 22:15

... Table Analysis of Two Distributions female # of red males N11 # of green males N12 # of males N1⋅ # of red females N21 # of green females N22 # of females N2⋅ # of red N ⋅1 ... number of degrees of freedom is equal to the number of entries in the table (product of its row size and column size) minus the number of constraints that have arisen from our use of the data themselves ... since the total of the column totals and the total of the row totals both equal N , the total number of data points Therefore, if the table is of size I by J, the number of degrees of freedom is...

Ngày tải lên: 28/10/2013, 22:15

... respectively, the number of data points in the measurement of r1 and r2 All of the significances above are two-sided If you wish to disprove the null hypothesis in favor of a one-sided hypothesis, ... concept of nonparametric correlation is this: If we replace the value of each xi by the value of its rank among all the other xi ’s in the sample, that is, 1, 2, 3, , N , then the resulting list of ... detecting correlation between uniform sets of integers between and N , keeping in mind the possibility of ties in the ranks There is, of course, some loss of information in replacing the original...

Ngày tải lên: 07/11/2013, 19:15

... kendl1(float data1 [], float data2 [], unsigned long n, float *tau, float *z, float *prob) Given data arrays data1 [1 n] and data2 [1 n], this program returns Kendall’s τ as tau, its number of standard ... a1 =data1 [j] -data1 [k]; a2 =data2 [j] -data2 [k]; aa=a1*a2; if (aa) { ++n1; Loop over first member of pair, and second member Neither array has a tie Sample page from NUMERICAL RECIPES IN C: THE ART OF ... relative ordering of the ranks of the two x’s is opposite from the relative ordering of the ranks of the two y’s If there is a tie in either the ranks of the two x’s or the ranks of the two y’s,...

Ngày tải lên: 07/11/2013, 19:15

... Chapter 14 Statistical Description of Data 14.8 Savitzky-Golay Smoothing Filters nR gi = cnfi+n (14.8.1) n=−nL Here nL is the number of points used “to the left” of a data point i, i.e., earlier than ... tabulate Monte Carlo results for (what amounts to) the distribution of D as a function of (of course) D, sample size N , and coefficient of correlation r Analyzing their results, one finds that the significance ... number of points as the real data set Compute D for each synthetic data set, using the accompanying computer routines (but ignoring their calculated probabilities), and count what fraction of the...

Ngày tải lên: 07/11/2013, 19:15

... models to data The process of seeking relationships within a data set— of seeking accurate, convenient, and useful summary representations of some aspect of the data involves a number of steps: ... introduce notions of the schema of data the a priori structure imposed on the data No data set is perfect, and this is particularly true of large data sets Measurement error, missing data, sampling ... of location—often the median of the data Whiskers project from the ends of the box to indicate the spread of the tails of the empirical distribution We illustrate the boxplot using a subset of...

Ngày tải lên: 07/12/2013, 11:40