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Wire-length Prediction using Statistical Techniques
Wire-length Prediction using Statistical Techniques

... We have developed a new wirelength model that uses data that can be extracted once the placement of the designs is completed. In order to build the model we used a combination of parametric and non-parametric techniques [2, 3]. Statistical models and prediction methodology can be used in many ways. ...
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... 3) A ball is thrown upward with an initial velocity of 14 meters per second from a cliff that is 90 meters high. The height of the ball is given by the quadratic equation h = -4.9t2 + 14t + 110  where h is in meters and t is the time in seconds since the ball was thrown. After how many seconds will  ...
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... The SPSS version of this code generates the output in Figure 4. As can be seen in the section of output for COL6, 95% of the bootstrap estimates for b3 were between 0.213 and 1.540. This is a bonafide 95% bootstrap confidence interval for the regression coefficient for XM in the simple moderation model ...
set 2 - Electrical and Computer Engineering
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Add On - Certificate Course in Business Analytics
Add On - Certificate Course in Business Analytics

... 3. The candidate after passing examination will be awarded a separate “Certificate In Business Analytics “ in addition to his/her regular degree/detailed marks card of Post Graduation Degree. 4. The examination shall be held in December or as fixed by the Academic Council . 5. The candidate who does ...
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Model Space Visualization for Multivariate Linear Trend Discovery

... car, a simple estimated linear trend model (y = k0 x0 + k1 x1 + b) could be helpful and revealing. Many computational approaches for constructing linear models have been developed, such as linear regression [6] and response surface analysis [3]. However, the procedure and results are not always usef ...
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Multiple imputation reducing outlier effect by weight adjustment

... Another problem for misleading analysis result is the existence of outlier. Sometimes the effect of outlier may be great enough not to interpret correctly the result. That is, without proper treatment of outliers, the estimate of total may be under or over estimated. Practically in survey data, both ...
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Logic Regression - Charles Kooperberg

... predictors are sometimes considered as well, those interactionsare usually kept simple (twoto three-way interactions at most). But often, especially when all predictors are binary, the interaction of many predictors is what causes the differences in response. For example, Lucek and Ott (1997) were c ...
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Linear regression



In statistics, linear regression is an approach for modeling the relationship between a scalar dependent variable y and one or more explanatory variables (or independent variables) denoted X. The case of one explanatory variable is called simple linear regression. For more than one explanatory variable, the process is called multiple linear regression. (This term should be distinguished from multivariate linear regression, where multiple correlated dependent variables are predicted, rather than a single scalar variable.)In linear regression, data are modeled using linear predictor functions, and unknown model parameters are estimated from the data. Such models are called linear models. Most commonly, linear regression refers to a model in which the conditional mean of y given the value of X is an affine function of X. Less commonly, linear regression could refer to a model in which the median, or some other quantile of the conditional distribution of y given X is expressed as a linear function of X. Like all forms of regression analysis, linear regression focuses on the conditional probability distribution of y given X, rather than on the joint probability distribution of y and X, which is the domain of multivariate analysis.Linear regression was the first type of regression analysis to be studied rigorously, and to be used extensively in practical applications. This is because models which depend linearly on their unknown parameters are easier to fit than models which are non-linearly related to their parameters and because the statistical properties of the resulting estimators are easier to determine.Linear regression has many practical uses. Most applications fall into one of the following two broad categories: If the goal is prediction, or forecasting, or error reduction, linear regression can be used to fit a predictive model to an observed data set of y and X values. After developing such a model, if an additional value of X is then given without its accompanying value of y, the fitted model can be used to make a prediction of the value of y. Given a variable y and a number of variables X1, ..., Xp that may be related to y, linear regression analysis can be applied to quantify the strength of the relationship between y and the Xj, to assess which Xj may have no relationship with y at all, and to identify which subsets of the Xj contain redundant information about y.Linear regression models are often fitted using the least squares approach, but they may also be fitted in other ways, such as by minimizing the ""lack of fit"" in some other norm (as with least absolute deviations regression), or by minimizing a penalized version of the least squares loss function as in ridge regression (L2-norm penalty) and lasso (L1-norm penalty). Conversely, the least squares approach can be used to fit models that are not linear models. Thus, although the terms ""least squares"" and ""linear model"" are closely linked, they are not synonymous.
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