Data/hora: 04/06/2024 15:03:57

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	29/04/1996	
Data da última atualização: 	29/04/1996	
Autoria: 	HUDSON, D. J.	
Título: 	Fitting segmented curves whose join points have to be estimated.	
Ano de publicação: 	1966	
Fonte/Imprenta: 	American Statistical Association Journal, v.61, p.1097-1129, Dec.1966.	
Idioma: 	Inglês	
Conteúdo: 	The overall least squares solutions is found when a complete curve to be fitted consists of two or more submodels, and these have to be joined at points whose abscissae have to be estimated. Under certain standard conditions, each fitted submodels is itself a local  least squares solution, and ther overall least squares solution can be found quite easily. The exceptions to this rule are studied. The easiest case to handle occurs when a join point coincides with an abscissa of the given data. In that case it is possible to modify local least squares estimates so that they satisfy an obvious linear constraint (the require- ment that the curves do actually join there). If the model is not made up entirely of a mixtu- re of straight lines and constantsm we will deal separately with the case where the submo- dels join together with equal slopes. The solution then requires iterative techniques.	
Palavras-Chave: 	Ajuste; Calculo; Curva segmentada; Estimated; Join point; Segmented curves.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (31703-1) - ADC - SP - -- - SP2226 -  - 2226 - DIS