نتایج جستجو برای: structure learning

تعداد نتایج: 2118169  

Journal: :Mobile Information Systems 2022

With the continuous development of artificial intelligence technology and information technology, a large number background data are constantly generated. How to obtain effective useful in complex group becomes important meaningful. The traditional Bayesian network can represent probability distribution variables from based on graphical models. It has relatively clear reliable reasoning ability...

Journal: :Journal of the American Statistical Association 2022

Gaussian Directed Acyclic Graphs (DAGs) represent a powerful tool for learning the network of dependencies among variables, task which is primary interest in many fields and specifically biology. Different DAGs may encode equivalent conditional independence structures, implying limited ability, with observational data, to identify causal relations. In contexts however, measurements are collecte...

Journal: :IEEE Transactions on Big Data 2021

Local causal structure learning aims to discover and distinguish direct causes (parents) effects (children) of a variable interest from data. While emerging successes have been made, existing methods need search large space target T. To tackle this issue, we propose novel Efficient Causal Structure algorithm, named ELCS. Specifically, first the concept N-structures, then design an efficient Mar...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده ادبیات و علوم انسانی 1392

abstract the first purpose of this study was to investigate the effect of consciousness-raising (c-r) activities on learning grammatical structures (simple present tense in this case) by iranian guidance school efl learners. the second one was to investigate the effect of gender on learning the simple present tense through c-r activities and tasks. finally, this study aimed to investigate the ...

سیف, دیبا, مرزوقی, رحمت اله,

  The purpose of this study was to investigate the relationship between the dimensions of epistemological beliefs, self-efficacy and academic achievement in physical sciences (physics, chemistry). To achieve this end, 475 students (241 females and 235 males) were selected from 10 guidance schools in Shiraz through selective sampling. Their average age was 13 with the standard deviation of 6 mon...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ولی عصر (عج) - رفسنجان - دانشکده ریاضی 1392

let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1392

abstract this study investigated the predictability of variables from a motivational framework as well as individuals qualities to predict three non-linguistic outcomes of language learning. gardners socio-educational model with its measures has been used in the current study. individual qualities presented in this study include (1) age, (2) gender, and (3) language learning experience. the...

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