Results 21 to 30 of about 113,018 (264)

Is sperm morphology functionally related to sperm swimming ability? A case study in a wild passerine bird with male hierarchies

open access: yesBMC Evolutionary Biology, 2018
Background Sexual selection continues after copulation via either sperm competition or cryptic female choice, and favors sperm traits that maximize sperm competitiveness.
Alfonso Rojas Mora   +3 more
doaj   +1 more source

Cumulated Relative Position: A Metric for Ranking Evaluation [PDF]

open access: yes, 2012
The development of multilingual and multimedia information access systems calls for proper evaluation methodologies to ensure that they meet the expected user requirements and provide the desired effectiveness. IR research offers a strong evaluation methodology and a range of evaluation metrics, such as MAP and (n)DCG.
Marco Angelini   +6 more
openaire   +4 more sources

Relative Saliency and Ranking: Models, Metrics, Data and Benchmarks [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2020
Salient object detection is a problem that has been considered in detail and \textcolor{black}{many solutions have been proposed}. In this paper, we argue that work to date has addressed a problem that is relatively ill-posed. Specifically, there is not universal agreement about what constitutes a salient object when multiple observers are queried ...
Mahmoud Kalash   +2 more
openaire   +3 more sources

When (and why) absolute decision attribute values influence human preferences

open access: yesActa Psychologica
Relative rank models of risky decision-making suggest that human preferences are informed by sampled (and not absolute) values and their relative ranks.
Joseph Teal, Petko Kusev, Rose Martin
doaj   +1 more source

Relative rank and regularization

open access: yesForum of Mathematics, Sigma
Abstract We introduce a new concept of rank – relative rank associated to a filtered collection of polynomials. When the filtration is trivial, our relative rank coincides with Schmidt rank (also called strength). We also introduce the notion of relative bias. The main result of the paper is a relation between these two quantities over finite fields
Amichai Lampert, Tamar Ziegler
openaire   +3 more sources

Relative rank statistics for dialog analysis [PDF]

open access: yesProceedings of the Conference on Empirical Methods in Natural Language Processing - EMNLP '08, 2008
We introduce the relative rank differential statistic which is a non-parametric approach to document and dialog analysis based on word frequency rank-statistics. We also present a simple method to establish semantic saliency in dialog, documents, and dialog segments using these word frequency rank statistics.
openaire   +2 more sources

Ranking Leading Econometrics Journals Using Citations Data from ISI and RePEc

open access: yesEconometrics, 2013
The paper focuses on the robustness of rankings of academic journal quality and research impact of 10 leading econometrics journals taken from the Thomson Reuters ISI Web of Science (ISI) Category of Economics, using citations data from ISI and the ...
Chia-Lin Chang, Michael McAleer
doaj   +1 more source

Beyond preferential attachment: falling of stars and survival of superstars

open access: yesRoyal Society Open Science, 2022
Numerous studies over the past decades established that real-world networks typically follow preferential attachment and detachment principles. Subsequently, this implies that degree fluctuations monotonically increase while rising up the ‘degree ladder’,
Shahar Somin   +3 more
doaj   +1 more source

Optimizing Finite Population Mean Estimation Using Simulation and Empirical Data

open access: yesMathematics
Two-phase sampling is an effective sampling approach that is useful in sample surveys when prior auxiliary information is not available. When two variables have an association, the ranks of the auxiliary variable are proportional to the study variable ...
Abdulaziz S. Alghamdi   +1 more
doaj   +1 more source

Some aspects of examination of children with combined spine and pelvis pathology living in an industrial city

open access: yesActa Biomedica Scientifica, 2016
The aim of the study was to analyze the peculiarities of combined spinal and pelvic pathology in children living on the industrial area of the Irkutsk Region.
M. B. Negreyeva   +3 more
doaj   +1 more source

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