نتایج جستجو برای: linear trend

تعداد نتایج: 595865  

Journal: :Remote Sensing 2022

Vegetation is the main component of terrestrial Earth, and it plays an imperative role in carbon cycle regulation surface water/energy exchange/balance. The coupled effects climate change anthropogenic forcing have undoubtfully impacted vegetation cover linear/non-linear manners. Considering essential benefits to environment, vital investigate dynamics through spatially temporally consistent wo...

رحیمی موقر, آفرین, صاحبی, رویا, متولیان, سید عباس, یونسیان, مسعود,

Background & Objectives: The aim of the study was to determine age, period, and cohort effects on trend of alcohol and drug use in the students of Tehran University of Medical Sciences from 2006 to 2009. Methods: Between 2006 and 2009, the students of Tehran University of Medical Sciences were surveyed annually using a structured self-administered and anonymous questionnaire. Intrinsic estim...

Journal: :Proceedings of the ... SIAM International Conference on Data Mining. SIAM International Conference on Data Mining 2016
Mahdi Pakdaman Naeini Gregory F. Cooper

Learning accurate probabilistic models from data is crucial in many practical tasks in data mining. In this paper we present a new non-parametric calibration method called ensemble of linear trend estimation (ELiTE). ELiTE utilizes the recently proposed ℓ1 trend ltering signal approximation method [22] to find the mapping from uncalibrated classification scores to the calibrated probability est...

2011
Kun Ho Kim

In this paper, we construct the uniform confidence band (UCB) of a time-varying trend in a partially linear model. A two-stage local linear regression is proposed to estimate the time-varying trend. Based on this estimate, we develop an invariance principle to construct the UCB of the trend function. The proposed methodology is used to estimate the Non-Accelerating Inflation Rate of Unemploymen...

1997
J. Mahantra H.K. Chaturvedi R.K. Phukan

A survey on opium use was earned out in Tinsukia district of upper Assam to assess the present prevalence and pattern of opium abuse and compared with earlier findings of the year 1981 (Baruah et al., 1995). A total of 75 addicts could be detected during the survey and 61 were interviewed using structured questionnaire. The results indicate significant decline in prevalence in opium use over th...

2007
Jaco A. Jordaan Abhisek Ukil

A new approach to short-term electrical load forecasting is investigated in this paper. As electrical load data are highly non-linear in nature, in the proposed approach, we first separate out the linear and the non-linear parts, and then forecast using the non-linear part only. Semi-parametric spectral estimation method is used to decompose a load data signal into a harmonic linear signal mode...

A.H Sarfaraz M.B Aryanezhad S Alizadeh Noghani S.J Sadjadi

Classical deterministic inventory models consider the demand rate to be either constant or time-dependent but independent from the stock status. However, for a certain type of inventory, the demand rate may be in-fluenced by the stock level. Also in many real-life problems, some products such as fruits, vegetables, phar-maceuticals and volatile liquids continuously deteriorate to evaporation, o...

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