learning from data streams with only positive and unlabeled data
Báo cáo khoa học: "A Combination of Active Learning and Semi-supervised Learning Starting with Positive and Unlabeled Examples for Word Sense Disambiguation: An Empirical Study on Japanese Web Search Query" pdf
Ngày tải lên :
23/03/2014, 17:20
... learning starting with positive and unlabeled examples Proposed Algorithm At the beginning of our algorithm, the system is provided with positive examples and unlabeled examples The positive examples ... select several example data sets from Japanese blog data crawled from Web Table shows the ambiguous words and each ambiguous senses Positive sense product name (TV) Percentage of positive sense 31.1% ... with- EM is 1.3 percentage points higher than that of without-EM (80.1%) This result suggests semi-supervised learning using unlabeled examples is effective The accuracies of with- EM, random and...
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Báo cáo khoa học: "Semantic Class Learning from the Web with Hyponym Pattern Linkage Graphs" pdf
Ngày tải lên :
17/03/2014, 02:20
... our pattern with the candidate (i.e., “CLASS NAME such as CANDIDATE and *”) and successfully extract many new instances, then this is evidence that the candidate frequently occurs with the CLASS ... class learning, under a variety of different names and with a variety of different goals Given the great deal of similar work in information extraction and ontology learning, we focus here only ... Pantel and Ravichandran, 2004; Phillips and Riloff, 2002), lexico-syntactic contextual patterns (e.g., “resides in ” or “moved to ”) (Riloff and Jones, 1999; Thelen and Riloff,...
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Báo cáo y học: "Characterization of erythrovirus B19 genomes isolated in liver tissues from patients with fulminant hepatitis and biliary atresia who underwent liver transplantation"
Ngày tải lên :
26/10/2012, 10:03
... isolates of the B19 genome (10 isolates with nearly full-length sequences (4561 bp) that covered the complete genes of NS1, VP1 and VP2 and isolates with only one short sequence in the NS1) All ... kb with hairpin structures at each extremity B19 encodes three major viral proteins: VP1 and NP2, the viral capsid proteins, and NS1, a nonstructural protein Both VP1 and VP2 are derived from ... Except for two infants with fulminant hepatitis who were HBV DNA -positive, all cases tested were negative for HAV RNA, HCV RNA and HEV RNA Importantly, among the hepatic B19 DNA -positive patients...
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Tài liệu From Data to Knowledge and Back Again: Understanding the Limitations of KMS pdf
Ngày tải lên :
20/12/2013, 19:15
... (2000) and Broendsted and Elkjaer (2001) who, following Boland et al (1994) and Pentland (1995), recognize the narrow focus of extant perspectives on knowledge and recommend a view of learning ... is concerned with the development, implementation and use of systems to informate organizational actors and automate business processes (Checkland and Howell, 1998) However, Boland et al (1994) ... separate fantasy from reality and leverage the practical benefits of IT in order to provide social actors with the ability to communicate and to share knowledge-informing data across space and time Another...
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Tài liệu Báo cáo khoa học: "Learning Word Senses With Feature Selection and Order Identification Capabilities" pdf
Ngày tải lên :
20/02/2014, 16:20
... Experiments and Evaluation 3.1 Test data We constructed four datasets from hand-tagged corpus by randomly selecting 500 instances for each ambiguous word - “hard”, “interest”, “line”, and “serve” ... estimated from disjoint data subsets in selected feature space It is based on the assumption that if selected feature subset is important and complete, cluster structure estimated from data subset ... by ρA and ρB are denoted as LA and LB ; (2.5) ST + = maxπ |C1T | i 1{π(LA (cT )) = LB (cT )}, Bi Bi B (3) (4) where π denotes possible permutation relating indices T between LA and LB , and cT...
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Tài liệu Báo cáo Y học: Characterization of an omega-class glutathione S-transferase from Schistosoma mansoni with glutaredoxin-like dehydroascorbate reductase and thiol transferase activities pptx
Ngày tải lên :
21/02/2014, 01:21
... hematine, and p-chloranil were obtained from ICN; hydroxyethyl disulfide (HEDS) and vinylene trithiocarbonate was obtained from Aldrich EST identification and cDNA isolation The S mansoni EST data base ... RESULTS SmGSTO DNA and protein sequence BLAST search of the S mansoni EST database with the complete sequence of Tc52 revealed a clone (EST AI975843) with around 25% sequence identity with the GST-like ... and was not due to an artifact, and also to examine the copy number of SmGSTO genes in the parasite genome Cercariae genomic DNA was digested with several restriction enzymes and hybridized with...
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Guidelines for the Investigation of Contacts of Persons with Infectious Tuberculosis Recommendations from the National Tuberculosis Controllers Association and CDC pptx
Ngày tải lên :
06/03/2014, 04:20
... contacts with a change in their tuberculin status from negative to positive, and Vol 54 / RR-15 Recommendations and Reports 19 FIGURE Evaluation, treatment, and follow-up of contacts with a documented ... overall investigation for later review and program evaluation Data from the investigation should be recorded on standardized forms (see Data Management and Evaluation of Contact Investigations) ... Recommendations and Reports 17 FIGURE Evaluation, treatment, and follow-up of immunocompetent adults and children aged >5 years (high- and medium-priority contacts) Evaluate with medical and exposure...
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Báo cáo khoa học: "Labeling Documents with Timestamps: Learning from their Time Expressions" pot
Ngày tải lên :
07/03/2014, 18:20
... periods and scored articles with log-likelihood ratio scores Kanhabua and Norvag (2008; 2009) extended this approach with the same model, but expanded its unigrams with POS tags, collocations, and ... is retrieved from the document’s Gigaword ID which contains the year and day the article was re- 104 The MaxEnt classifiers are also from the Stanford toolkit, and both the document and year mention ... and F1 for the core relations Accuracy for both core and fine-grained 105 Many thanks to Stephen Guo and Dan Jurafsky for early ideas and studies on this topic References Nathanael Chambers and...
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Báo cáo khoa học: "Learning Semantic Links from a Corpus of Parallel Temporal and Causal Relations" doc
Ngày tải lên :
08/03/2014, 01:20
... Annotators selected the best paraphrase of and from the following options: and as a result, and as a consequence, and enabled by that NO - REL and independently, and for similar reasons CAUSAL To build ... events, e.g took and began meet only at their roots, so the LCA senses are act#0 and be#0 We also extracted temporal and causal word associations from the Google N-gram corpus (Brants and Franz, 2006), ... (P)recision, (R)ecall and (F1)measure The null label is NO - REL train/test split from Table and the feature sets: Syntactic The syntactic features from Section Semantic The semantic features from Section...
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Báo cáo Y học: The Fe-only nitrogenase and the Mo nitrogenase from Rhodobacter capsulatus A comparative study on the redox properties of the metal clusters present in the dinitrogenase components doc
Ngày tải lên :
18/03/2014, 01:20
... of both the Fe -only and the Mo nitrogenase components The column (internal diameter: 2.5 cm) containing approximately 60 mL gel, was cooled to °C with a cryostat and equilibrated with Ar-gassed ... oxidant and Na2S2O4 as reductant After equilibration, which was usually achieved after 1–2 min, 170-lL samples were withdrawn from the solution with a gas-tight syringe, placed in an EPR tube and ... pH 7.4), although with much lower intensity (data not shown) The rhombic signal at g ¼ 2.03, 2.00 and 1.90, which appeared prominently after oxidation with K3[Fe(CN)6] (> mM) and was proposed...
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Cancer Research UK’s strategy 2009–2014: Cancer Research UK’s aim is to reduce the number of deaths from cancer. Our future plans are ambitious, but they are in line with the challenge and the responsibility we face. docx
Ngày tải lên :
22/03/2014, 16:21
... Institutes and Centres • Continue to invest in and foster national and international collaborations to deliver the best research - Consider current and potential connections with the pharmaceutical and ... this rich data gives for enhancing patient choice and improving cancer services Our brand and reputation The Cancer Research UK brand enjoys high levels of awareness, emotional support and trust ... cisplatin, and we discovered and developed carboplatin Cisplatin and carboplatin have been two of the most successful anti-cancer agents ever developed, and are currently used to treat ovarian, lung and...
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Testing the Trade Credit and Trade Link: Evidence from Data on Export Credit Insurance docx
Ngày tải lên :
22/03/2014, 18:20
... insurers (see Van der Veer (2010), Felbermayr and Yalcin (2011), Felbermayr, Heiland, and Yalcin (2012), Moser et al (2008) and Egger and Url (2006)) Using data on a single private credit insurer, ... normally on national income, and on relative prices of foreign and domestic goods (see for example, Goldstein and Khan, 1985, and Emran and Shilpi, 2010, on import demand estimation) 11 We regress ... customs data, and bank-intermediated data, which comes from bank reporting The former statistics, when accounting “open account” financing, hardly differentiates between trade finance and other...
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Báo cáo khoa học: Weak toxin WTX from Naja kaouthia cobra venom interacts with both nicotinic and muscarinic acetylcholine receptors potx
Ngày tải lên :
23/03/2014, 05:22
... from BioRad (Hercules, CA, USA), oxotremorine M from Sigma, [3H]atropine and [3H]QNB from Amersham, [3H]ACh from ARC, and [3H]NMS and [35S]GTP[cS] from NEN Other reagents were of the highest commercially ... antagonist of both muscle-type and a7 nAChRs These data indicate that [125I]WTX interacts with both mAChRs and nAChRs, in accordance with the two types of adrenal gland binding sites indicated by ... adrenal gland, whereas Ballesta et al [25] associated muscarinic ligand-binding sites in the bovine and feline adrenal glands with the M2 subtype Functional tests have identified M1, M3 and M4 receptors...
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Visual Event Recognition in Videos by Learning from Web Data ppt
Ngày tải lên :
23/03/2014, 13:20
... samples) from the target domain and auxiliary domain are used to calculate h in (6) Note that all test samples are used as unlabeled data during the learning process Table reports the means and standard ... target domain based on Gaussian kernel with the default DUAN ET AL.: VISUAL EVENT RECOGNITION IN VIDEOS BY LEARNING FROM WEB DATA 1675 TABLE Means and Standard Deviations (Percent) of MAPs over ... ¼ 10À5 and set ¼ 20 for all three cases Considering that DTSVM and A-MKL can take advantage of both labeled and unlabeled data by using the MMD criterion to measure the mismatch in data distributions...
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Civilization and Beyond Learning From Hist doc
Ngày tải lên :
23/03/2014, 17:20
... shared with the temples and with those members of the nobility closest to the ruling monarch Hence there were state lands and state income and temple lands and temple income The use of state lands ... migration, trade and travel by land to and from Asia, Africa and Europe The other was the Mediterranean with its possibility of relatively safe and easy water-migration, trade and travel between ... the Mediterranean Sea and the band of South Asia extending from Mesopotamia through India and Indonesia to China They include the high Andes, Mexico and Central America and parts of black Africa...
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