نتایج جستجو برای: a dummy variable is added
تعداد نتایج: 14150687 فیلتر نتایج به سال:
the aim of the current study was to investigate the relationship among efl learners learning style preferences, use of language learning strategies, and autonomy. a total of 148 male and female learners, between the ages of 18 and 30, majoring in english literature and english translation at islamic azad university, central tehran were randomly selected. a package of three questionnaires was ad...
Currently, there exist several offline calibration techniques that can be used to fine-tune the parameters of a metaheuristic. Such techniques require, however, to perform a considerable number of independent runs of the metaheuristic in order to obtain meaningful information. Here, we are interested on the use of this information for assisting the algorithm designer to discard components of a ...
A diagnostic method along the lines of forward search is proposed to simultaneously study the effect of individual observations and features on the inferences made in linear regression. The method operates by appending dummy variables to the data matrix and performing backward selection on the augmented matrix. It outputs sequences of feature–outlier combinations which can be evaluated by plots...
testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...
The main goal of the present paper is to analyze the effects of currency collapses (a large devaluation of country’s nominal exchange rate) on real gross domestic products of six Asian countries (Iran, Indonesia, Malaysia, Pakistan, South Korea, and Turkey). A yearly data is collected from the WDI of the World Bank over the period 1980-2011. The econometric model includes the real GDP growt...
We show how to construct power indices that respect proportionality between power and weight from average representations of a game. If restricted to account for the lack of power of dummy voters, average representations become coherent measures of voting power, such that the resulting power distributions are proportional to the distribution of weights. Imposing other restrictions may lead to a...
Let F be a family of subsets of the ground set [n] = {1, 2, . . . , n}. For each i ∈ [n] we let p(F , i) be the number of pairs of subsets that differ in the element i and exactly one of them is in F . We interpret p(F , i) as the influence of that element. The normalized Banzhaf vector of F , denoted B(F), is the vector (B(F , 1), . . . , B(F , n)), where B(F , i) = p(F ,i) p(F) and p(F) is th...
I introduce cooperative product games (CPGs), a cooperative game where every player has a weight, and the value of a coalition is the product of the weights of the players in the coalition. I only look at games where the weights are at least 2. I show that no player in such a game can be a dummy. I show that the game is convex, and therefore always has a non-empty core. I provide a simple metho...
in a structural time series regression model, binary variables have been used to quantify qualitative or categorical quantitative events such as politic and economic structural breaks, regions, age groups and etc. the use of the binary dummy variables is not reasonable because the effect of an event decreases (increases) gradually over time not at once. the simple and basic idea in this paper i...
the projective representation of the 3D scene. In other words, the projective representation of the scene can undergo a projective transformation (which eeectively translates the scene along the optical axes of the rst view) which is interchangeable with the camera motion from view to view. The in-terchangeability point is eeectively contained in the arguments of 3] about the geometric content ...
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