comparison of surrogate recoveries for spiked environmental samples and spiked test solutions
A Comparison of Event Models for Naive Bayes Text Classi cation potx
... performed with randomly selected train -test splits The Industry Sector and Newsgroups data sets use five trials with 20% of the data held out for testing; Yahoo uses five trials with a 30% test ... We write C for a random variable over all classes, and write Wt for a random variable over the absence or presence of word wt in a document, where Wt takes on values ft ∈ {0, 1}, and ft = indicates ... indicates the absence of wt , and ft = indicates the presence of wt Average mutual information is the difference between the entropy of the class variable, H(C), and the entropy of the class variable...
- 8
- 519
- 0
Báo cáo khoa học: Systems biology: model based evaluation and comparison of potential explanations for given biological data pot
... test is a positive indication of the quality of the model b Identification of p Below, we introduce the probably two most common ways for testing Eqn (4): a v2 test and a whiteness test Both of ... critical of the actual test (i.e ‘to test the test ) This is especially the case if a nonstandard version of a test has been constructed especially for a particular problem Testing the test can ... the topic of an accompanying minireview [56], and is outside the scope of the present one Software An efficient and user-friendly software option for statistical testing is matlab, for which there...
- 20
- 383
- 0
Báo cáo khoa học: "A Comparison of Chinese Parsers for Stanford Dependencies" ppt
... the test data only and exclude generation of basic Stanford dependencies (for constituent parsers) and part -of- speech tagging (for dependency parsers) Results Table tabulates efficiency and performance ... 3: Performance and efficiency for all parsers on CTB data: unlabeled and labeled attachment scores (UAS/LAS) are for both development and test data sets; parsing times (minutes:seconds) are for ... 2010) for graph-based dependency parsing (McDonald and Pereira, 2006) Therefore, we deemed it important to re-evaluate the performance of constituent and dependency parsers But the main purpose of...
- 6
- 460
- 0
Báo cáo khoa học: "A Comparison of Event Models for Naive Bayes Anti-Spam E-Mail Filtering" potx
... cases, precision and recall were different over the entire range of the number of selected words In these cases we give the recall and accuracy for the minimum number of words for which accuracy ... was highest Figures and show recall curves for the multivariate Bernoulli model and three feature ranking functions in the multinomial model for Ling- Spam, and Figures and for PU I Some observations ... and spam messages across the 10 parts Following (Androutsopoulos et al., 2000b), we used 10-fold crossvalidation in all experiments, using nine parts for training and the remaining part for testing,...
- 8
- 514
- 0
báo cáo hóa học:" A comparison of classification methods for predicting Chronic Fatigue Syndrome based on genetic data" potx
... was coded as for homozygote of the major allele, for heterozygote, and for homozygote of the minor allele, respectively Classification algorithms In this study, we used three families of classification ... sensitivity, the proportion of correctly predicted responders of all tested responders, and specificity, the proportion of correctly predicted nonresponders of all the tested non-responders To investigate ... splits of data The performance of all models was evaluated both with and without feature selection, using repeated 10-fold cross-validation testing Results Tables 3, and summarize the results of...
- 8
- 598
- 0
Báo cáo sinh học: " Comparison of amplification enzymes for Hepatitis C Virus quasispecies analysis" docx
... + + + + + + + + - - - Figure Comparison of the sensitivity of the E2-HVR1 PCR using Taq and HF-2 enzymes Comparison of the sensitivity of the E2-HVR1 PCR using Taq and HF-2 enzymes RNA was extracted ... current study, we compared Taq and HF-2 polymerases in terms of sensitivity and robustness, and in terms of evaluating HCV QS diversity and complexity as assessed by CFA of the E2-HVR1 on baseline ... duplicate serial dilutions of a WHO HCV standard and RT-PCR was performed with Taq and HF-2 enzymes The dilutions corresponded to 50,000 (5K), 1,000 (1K), 500, 100, and 50 IU/ml, and are indicated above...
- 11
- 453
- 0
Báo cáo hóa học: " Comparison of regression models for estimation of isometric wrist joint torques using surface electromyography" potx
... accuracy for same session models Table compares NRMSE and R2 for two extreme a cases where 25% and 90% of the data set is used for training models and the rest of the data set is used for testing ... then tested on the remaining 25% and the model with the best performance was picked Mean and standard deviation of NRMSE and R2 for models trained with two, five, and a eight channels are presented ... τe(i) is the estimated and τm(i) is the measured torque value for sample i, n corresponds to the total number of samples tested, and τm,flex and τm,ext are the maximum flexion and extension torques...
- 12
- 560
- 0
Báo cáo hóa học: " Research Article Comparison of Semidistributed Multinode TOA-DOA Fusion Localization and GPS-Aided TOA (DOA) Fusion Localization for MANETs" pot
... standard deviation, and Z = σG /σR The results are shown in Figures 6, 7, 8, and These figures show (1) all methods perform better as the number of base-nodes increases; (2) the performance of ... 2006 [5] J Xie and L Huang, “Specification and verification of position based routing for mobile ad hoc system,” in Proceedings of the 5th International Conference on Computer and Information Technology ... performance of a system considering single category of measurement (TOA or DOA) and assuming the measurement errors are independent and identically distributed Normalized mean square, mean and...
- 16
- 363
- 0
Báo cáo hóa học: " Research Article A Comparison of Detection Performance for Several Track-before-Detect Algorithms" doc
... detection performance of four alternative track-beforedetect algorithms has been investigated for a range of target SNR values and speeds For most of the scenarios the difference in detection performance ... Aerospace and Electronic Systems, vol 43, no 1, pp 93–111, 2007 [24] S J Davey and M G Rutten, “A comparison of three algorithms for tracking dim targets,” in Conference Proceedings of Information, ... [27] M G Rutten, B Ristic, and N J Gordon, “A comparison of particle filters for recursive track-before-detect,” in Proceedings of the 8th International Conference on Information Fusion, vol 1,...
- 10
- 260
- 0
Báo cáo khoa học: "Comparison of Diagnostic Methods for the Detection of Parasites in Fish" pdf
... concentration of 100-150 ng/µl, and the template for this concentration was used in a normal PCR reaction of 50 µl volume (25µl of master mix, Comparison of Diagnostic Methods for the Detection of Parasites ... metacercariae in vitreous humour of eyes (one band) and metacercariae in lens of eyes (two bands) No difference between and µl of DNA was observed Figue Testing of NC2-NC5 primer pair from eye ... Comparison of Diagnostic Methods for the Detection of Parasites in Fish and disadvantages, depending on the purpose and target of study For parasitological investigation,...
- 9
- 559
- 0
Báo cáo khoa học: "Comparison of an enzyme-linked immunosorbent assay with serum neutralization test for serodiagnosis of porcine epidemic diarrhea virus infection" pdf
... enicrop tsniaga noitceted ydobitna eht rof ASILE na nI yticificeps gnivorpmi rof dna snoitcaer dnuorgkcab hgih gnivomer rof dengised saw DO detcerroc rof alumrof a ,suhT yticificeps wol dna dnuorgkcab ... 73 ta ruoh rof detabucni saw erutxiM ares detulid fo emulov lauqe na htiw dexim saw lm 1.0 / DICT 002 fo VDEP dna ,sdlof-owt detulid erew ares ehT C 02− ta derots dna setunim 03 rof C 65 ta detavitcani ... ehT C 73 ta ruoh rof detabucni rehtruf erew setalp dna ,dedda saw )noitulid 000,2 : 1( )ASU ,LPK( GgI gip-itna taog detagujnoc-PRH fo lµ 001 ,setalp gnihsaw retfA C 73 ta ruoh rof detabucni neht...
- 4
- 229
- 0
Báo cáo lâm nghiệp: "A comparison of fitting techniques for ponderosa pine height-age models in British Columbia" potx
... need for localization is not a foregone conclusion [21]; it is an hypothesis that needs to be tested The purpose of this research was to develop height-age models for ponderosa pine and to test for ... curves for the IDF and PP zones differ, the differences are small within the range of the data (Fig 2, and note that the divergence of the curves occurs outside of the range of the most of the ... W-statistic, and mean value for φ for the 80 plots for models (1), (2), (3), and (4) are shown in Table II The mean error for model (1) indicates that it is slightly biased, but the mean error for the...
- 7
- 304
- 0
Báo cáo khoa học: "Simulation and comparison of silvicultural alternatives for even-aged Pinus pinaster Ait stands in Galicia (Northwestern Spain)" pps
... low stand density improves the possibility for recreation, favours the coexistence of deciduous tree species, and reduces the risk of forest fire The evaluation of silvicultural alternatives for ... site index curves for the coastal area of Galicia, with a remarkable different guide than those for the inland area [22] One of the most important single elements of this stand growth-simulator ... ages of 10–12 years by site productivity Afterwards, three more thinnings will be done All thinnings are standard from below and of moderate weight (Removal of 20 to 25% of the stem number before...
- 8
- 224
- 0
Báo cáo y học: "Comparison of metal-dependent catalysis by HIV-1 and ASV integrase proteins using a new and rapid, moderate throughput assay for joining activity in solution" ppt
... transposases and other recombinases The HIV-1 IN is of special interest as a target for the development of drugs to treat AIDS [1] For both medical and scientific reasons therefore, the biochemistry of ... and data analysis, and contributed to writing and editing the manuscript JC designed the assay and performed some of the preliminary experiments GM conducted all of the optimization studies and ... the joining activity of IN proteins in solution In this report we describe and validate the assay, and illustrate its utility in a comparison of the joining properties of ASV and HIV-1 integrase,...
- 10
- 414
- 0
Báo cáo sinh học: "Comparison of classification methods for detecting associations between SNPs and chick mortalit" pps
... were the 1/3 and 2/3 quantiles of the empirical distribution of sire means This is just one of the many possible forms of categorization, and it does not make assumptions about the form of the distribution ... margin For example, with K = 2, error rates of NB were about half of those achieved with either BN or NN Therefore, NB was used for further analysis Evaluation of SNP subsets Results of the comparison ... alive), and the GLMM fitted was: logit(pijk) = + DAi + Hj, (1) where pijk is the death probability of bird k, progeny of a dam of age i and born in hatch j Here, DAi stands for the fixed effect of...
- 14
- 247
- 0
comparison of the methods for the determination of surface acidity of solid catalysts
... of Kubokawa showed that two different energy values a r e obtained, one for subambient temperatures and of the order of 10 kcal/mole, and the other for higher temperatures (up to 450°C) and of ... quantity of exchanged deuterium and from the quantity of water formed during the reaction The fraction of the various forms of hydrogen can be determined from the ratios of the areas of the corresponding ... the color of its acid form, the value of H, of the surface is lower or equal to the pK, of the indicator The lower the value of H, (and the lower the pKJ, the higher is the acid strength of the...
- 53
- 378
- 0
Determination of endocrine disrupting compounds in environmental samples using microextraction combined with gas chromatography mass spectrometry
... antagonism of hormones and inhibition of the synthesis and metabolism of hormones Many of the known EDCs are environmental estrogens, and it is for this reason that the phenomenon of the feminization ... of PAH and a range of other organic pollutants [25] Industrial wastes and domestic sewage often also contain high concentrations of particulate and soluble PAH, and together with surface runoff ... salinity of 3% in purified water) spiked with a stock solution containing APs and BPA (final spiked concentration of 100 µg l-1 per analyte in 200 ml of samples) LLE was performed with 50 ml of dichloromethane...
- 157
- 345
- 0
Tài liệu Báo cáo khoa học: "Part-of-Speech Tagging for Twitter: Annotation, Features, and Experiments" pdf
... Lafferty, Andrew McCallum, and Fernando Pereira 2001 Conditional random fields: Probabilistic models for segmenting and labeling sequence data In Proc of ICML Mitchell P Marcus, Beatrice Santorini, and ... Proc of NAACL Hinrich Sch¨ tze and Jan Pedersen 1993 A vector model u for syntagmatic and paradigmatic relatedness In Proceedings of the 9th Annual Conference of the UW Centre for the New OED and ... most popular of these is the RT (“retweet”) construction to publish a message with attribution For example, than for Standard English text For example, apostrophes are often omitted, and there are...
- 6
- 669
- 0
Programmatic update Use of Antiretroviral Drugs for Treating Pregnant Women and Preventing HIV Infection in Infants pptx
... but also continuing this therapy for all of these women for life Important advantages of Option B+ include: further simplification of regimen and service delivery and harmonization with ART programmes, ... of all HIV-infected pregnant women) on ART for life for their own health as well as for the prevention of infant HIV infection For women with CD4 counts >350 cells/mm3, who are not eligible for ... approach of lifelong ART for PMTCT for all HIVinfected pregnant women, rather than stopping ARVs for women not eligible for treatment, as in both Option A and Option B (7); •• the launch of the...
- 7
- 660
- 0
Tìm thêm: xác định các nguyên tắc biên soạn khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam nội dung cụ thể cho từng kĩ năng ở từng cấp độ các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng 9 tr 25