... Evaluation of ASTER data use in land use study in the Mekong Delta 29 discrimination capacity of ASTER data in land use mapping of such a dynamic area as the Mekong ... by a large diversity of land use practice with a land cover of small size, the discrimination capacity of the data is essential ASTER data with a spatial resolution even of 15m are still limited ... for the detailed land use mapping of the studied area Instead of this, ASTER data provide a wide range of spectra and we assume that there exist some combinations of spectral bands in all three...
Ngày tải lên: 13/02/2014, 12:20
... transparency of this process Reliability and relevance evaluation of (eco-)toxicity data Aim According to the TGD [9], an evaluation of data reliability should ensure “the inherent quality of a test ... (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 ... concerning endpoints and a summary of the evaluation results Evaluation method Evaluation criteria/question Type of criteria/mark Summary of evaluation results Klimisch et al Data on the measured parameters...
Ngày tải lên: 21/06/2014, 03:20
Statistical Description of Data part 1
... 610 Chapter 14 Statistical Description of Data CITED REFERENCES AND FURTHER READING: Bevington, P.R 1969, Data Reduction and Error Analysis for the Physical ... 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...
Ngày tải lên: 20/10/2013, 17:15
Statistical Description of Data part 2
... 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 ... 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 ... 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
Statistical Description of Data part 3
... 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
Statistical Description of Data part 4
... 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
Statistical Description of Data part 5
... 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
Statistical Description of Data part 6
... 14 Statistical Description of Data Equations (14.5.7) and (14.5.8), when they are valid, give several useful statistical tests For example, the significance level at which a measured value of ... 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...
Ngày tải lên: 07/11/2013, 19:15
Statistical Description of Data part 7
... trade@cup.cam.ac.uk (outside North America) D= 642 Chapter 14 Statistical Description of Data Expectation value of D, and variance of D give number of standard deviations and significance Rank correlation ... 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...
Ngày tải lên: 07/11/2013, 19:15
Statistical Description of Data part 8
... d1,d2,dum,dumm,fa,fb,fc,fd,ga,gb,gc,gd,r1,r2,rr,sqen; 650 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., ... one of whose quadrants (shown by dotted lines) maximizes the difference between fraction of triangles and fraction of squares Then, equation (14.7.1) indicates whether the difference is statistically ... upper-left quadrant That quadrant contains only 0.12 of all the triangles, but it contains 0.56 of all the squares The value of D is thus 0.44 Is this statistically significant? Even for fixed sample...
Ngày tải lên: 07/11/2013, 19:15
Tài liệu Statistical Description of Data part 9 pptx
... convlv, a set of Savitzky-Golay filter coefficients nl is the number of leftward (past) data points used, while nr is the number of rightward (future) data points, making the total number of data points ... Figure 14.8.1 Top: Synthetic noisy data consisting of a sequence of progressively narrower bumps, and additive Gaussian white noise Center: Result of smoothing the data by a simple moving window ... Luckily, since the process of least-squares fitting involves only a linear matrix inversion, the coefficients of a fitted polynomial are themselves linear in the values of the data That means that we...
Ngày tải lên: 15/12/2013, 04:15
Tài liệu Báo cáo khoa học: The isolation and characterization of cytochrome c nitrite reductase subunits (NrfA and NrfH) from Desulfovibrio desulfuricans ATCC 27774 Re-evaluation of the spectroscopic data and redox properties ppt
... enzyme is a complex of two different subunits – the pentahemic NrfA and the tetrahemic NrfH, implying the existence of nine different hemes Thus, a re -evaluation of the Mossbauer data (native state ... absence of boiling (Fig 1A, lanes and 4) high molecular mass bands of approximately 110 kDa and > 200 kDa were visible, as well as a faint band at 37 kDa, suggesting the presence of dimers All of ... Purification attempt of a soluble form of ccNiR Nitrite reductase activity was checked in the soluble cell fraction in order to investigate the existence of a soluble monomeric form of ccNiR, as reported...
Ngày tải lên: 21/02/2014, 00:20
Báo cáo khoa học: "EVALUATION OF NATURAL LANGUAGE INTERFACES TO DATABASE SYSTEMS: A PANEL DISCUSSION " ppt
Ngày tải lên: 08/03/2014, 18:20
Bell & Howell Information and Learning 300 North Zeeb Road, Ann Arbor, MI 48106-1346 USA 800-521-0600UMI.The Potential of Soil Survey Data in a Quantitative Evaluation of Surficial Geology Mapping in Northern Maine by Rosalia EvansThesis submitted t pptx
... percentage of area of surficial geology map units on portions of Prescott’s ground-water favorability map 30 Area and percentage of area of surficial map units on portions of Genes’s ... mapping data for soil surveys include: steepness, length and shape of slope, stream size and speed, kinds of vegetation, types of rock, bore hole data, comparisons to local and regional soil profiles, ... survey data (Lindholm, 1994) This is a much faster rate of mapping than conventional geologic mapping affords Lindholm enjoyed this rate of mapping because of the availability of soil survey maps of...
Ngày tải lên: 08/03/2014, 23:20
Evaluation of Current RDF Database Solutions ppt
... Comparing the test data structure of BSBM to the data of SP2 B, the SP2 B data uses already well known ontologies, which is an additional advantage Evaluation criteria The evaluation of RDF databases ... evaluation Based on the evaluation in [7] the achieved evaluation of ARC, Redland and Virtuoso are insufficient, thus a further examination of these databases is not part of this paper Our paper ... relational database in–memory, native disk storage, relational database relational database YARS o Java subset of N3 Berkeley DB no no yes relational databases no u Mozilla Public License Open Software...
Ngày tải lên: 16/03/2014, 16:20
Báo cáo khoa học: "Modeling Human Sentence Processing Data with a Statistical Parts-of-Speech Tagger" ppt
... scope of data used and the interpretation of the model for human Conclusion Our studies show that, at least for the sample of test materials that we culled from the standard literature, a statistical ... a pair of sentences Comparatively faster drop of probability is expected to be a good indicator of comparative processing difficulty Probability re-ranking, which is a simplified model of the reanalysis ... A total of 30 pairs of a garden-path sentence and its ambiguous, non-garden-path control were tested for a comparison of the probability decrease at the disambiguating region In 80% of the cases,...
Ngày tải lên: 17/03/2014, 04:20
Báo cáo khoa học: "EVALUATION OF NATURAL LANGUAGE INTERFACES TO DATA BASE SYSTEMS" pdf
... USL, the "sister system" of REL developed by IBM Heidelberg [10] with German used as gLl in two studies of high school students: predominance of wh-questions (317 in total of 451); not many relative ... questions (i) TABLE TABLE An evaluation which would not include an analysis of unparsed input would at best be of limited value It was shown in Table i that i093 out of 1515 or about ~ o t h i ... stow height and bale cube of the pyrotechnic locker of the AL?" 88 Sentences with quantifier and conjunction(s), e.g., "List hatch width and hatch length of each deck of the Alamo." 13 Sentences...
Ngày tải lên: 17/03/2014, 19:20
Báo cáo khoa học: "Theoretical Evaluation of Estimation Methods for Data-Oriented Parsing" pot
... weights of all trees of the target grammar G are 0, except for w7 , which is necessarily 1, and w4 and w6 which are w4 = p and w6 = − p He finds that the expected values of the weights w4 and w6 of ... recover the true weights of the given STSG, and hence the inconsistency of the estimator with respect to the class of STSGs Although usually cited as showing the inadequacy of DOP1, Johnson’s example ... these equations it is immediately clear that, regardless of the amount of training data, the problem is simply underdetermined The values of weights w1 w6 (w7 = 1) given only frequencies f1...
Ngày tải lên: 17/03/2014, 22:20
Báo cáo khoa học: "Learning Effective Multimodal Dialogue Strategies from Wizard-of-Oz data: Bootstrapping and Evaluation" pot
... number of presented items (verbal and multimodal items) between simulated RL a small amount of Wizard -of- Oz data, and we evalu.79±.21*** ated the result with real users The use of WOZ data 67±.20*** ... entirely data- driven approach, where all components of the simulated learning environment are learned from WOZ data We also show that the resulting policy performs well for real users Wizard -of- Oz data ... logged, e.g the transcriptions of the spoken utterances, the wizard’s database query and the number of results, the screen option chosen by the wizard, and a rich set of contextual dialogue features...
Ngày tải lên: 23/03/2014, 17:20
DG INTERNAL MARKET AND SERVICES WORKING PAPER - First evaluation of Directive 96/9/EC on the legal protection of databases pptx
... number of databases and the amount of information delivered through databases It may be appropriate to evaluate the evolution of database sales not exclusively by means of measuring the number of databases ... of databases? 15 4.2.1 The growth of the overall EU information market 15 4.2.2 Investments in databases: the opinion of database producers 16 4.2.3 The development of database ... producers of databases enjoy a competitive advantage by virtue of the language in which they produce their databases 2.1 Eliminate the differences in the legal protection of authors of databases...
Ngày tải lên: 30/03/2014, 13:20