نتایج جستجو برای: empirical data
تعداد نتایج: 2541750 فیلتر نتایج به سال:
Let F be a class of measurable functions f :S 7→ [0,1] defined on a probability space (S,A, P ). Given a sample (X1, . . . ,Xn) of i.i.d. random variables taking values in S with common distribution P , let Pn denote the empirical measure based on (X1, . . . ,Xn). We study an empirical risk minimization problem Pnf →min, f ∈ F . Given a solution f̂n of this problem, the goal is to obtain very ge...
in nigeria, most farming activities rely on family labor. however, rural-urban drift and the movement of young people away from agriculture are making labor increasingly pause. thus, labor has become a major constraint to expanding the scope of production by small-scale resource poor farmers. this paper provides an empirical relationship between labor and poverty using data from households. thr...
A two-factor experiment with interaction between factors wherein observations follow an Inverse Gaussian model is considered. Analysis of the experiment is approached via an empirical Bayes procedure. The conjugate family of prior distributions is considered. Bayes and empirical Bayes estimators are derived. Application of the procedure is illustrated on a data set, which has previously been an...
Now a days, the major challenge in machine learning is the ‘Big Data’ challenge. The big data problems due to large number of data points or large number of features in each data point, or both, the training of models have become very slow. The training time has two major components: Time to access the data and time to process the data. In this paper, we have proposed one possible solution to h...
based on the importance of drops' behavior in liquid-liquid extraction, the maximum sauter mean drop diameter has been investigated and correlated in a counter-current spray extraction column with two chemical systems. spargers were set of nozzles in all experiments. studying the effects of several parameters on drops size, some correlations were estimated by the last available version of softw...
previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...
In this paper we aim to classify digital data sources for the measurement of tourist mobility, establish a set assessment indicators, and compare two Big Data gain empirical insights into how can measure tourism with Data. For three holiday destinations in Germany, passive mobile global positioning systems (GPS) are compared reference from twelve weeks summer 2019. Results show that network on ...
the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...
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