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Recursos bibliográficos en papel y digitales -
- libros, artículos de revistas,
ponencias de eventos, etc. -
» Resultado:
7 registros
| Registro 1 de 7 |
| Autor: |
Qu, Yinsheng - Adam, Bao-ling - Thornquist, Mark - Potter, John D. - Thompson, Mary Lou - Yasui, Yutaka - Davis, John - Schellhammer, Paul F. - Cazares, Lisa - Clements, MaryAnn - Wright Jr., George L. - Feng, Ziding - |
| Título: |
Data reduction using a discrete wavelet transform in discriminant analysis of very high dimensionality data |
| Fuente: |
Biometrics. v.59, n.1. International Biometric Society |
| Páginas: |
pp. 143-151 |
| Año: |
mar. 2003 |
| Resumen: |
We present a method of data reduction using a wavelet transform in discriminant analysis when the number of variables is much greater than the number of observations. The method is illustrated with a prostate cancer study, where the sample size is 248, and the number of variables is 48,538 (generated using the ProteinChip technology). Using a discrete wavelet transform, the 48,538 data points are represented by 1271 wavelet coefficients. Information criteria identified 11 of the 1271 wavelet coefficients with the highest discriminatory power. The linear classifier with the 11 wavelet coefficients detected prostate cancer in a separate test set with a sensitivity of 97 percent and specificity of 100 percent. |
| Solicitar por: |
HEMEROTECA B + datos de Fuente |
| Registro 3 de 7 |
| Autor: |
Zong, Ping - Davis, John - |
| Título: |
Off-Farm Employment and Grain Marketable Surplus in China |
| Fuente: |
Journal of Agricultural Economics. v.49, n.3. Agricultural Economics Society |
| Páginas: |
pp. 346-58 |
| Año: |
Sept. 1998 |
| Resumen: |
This paper examines the effects of off-farm employment on grain marketable surplus supply during the reform period in China. A theoretical framework demonstrates that farm households’ supply behaviour depends not only on the profitability of farm production but also on alternative off-farm wage opportunities of household members. An empirical model, which assumes full income maximisation of farm households, simultaneously evaluates the effects of on-farm and off-farm income on their grain supply behaviour. Particular attention is paid to the effect of off-farm income through a comparison of conditional and unconditional grain marketable surplus supply elasticities. Results show that off-farm income had a strong negative effect on grain marketable surplus from farm households following liberalisation of factor markets in China and that this could lead to a loss of marketable surplus supply. |
| Solicitar por: |
HEMEROTECA J + datos de Fuente |
| Registro 4 de 7 |
| Autor: |
Davis, John-B (Reviewer) - |
| Título: |
Review of: The rise of political economy as a science: Methodology and the classical economists |
| Fuente: |
Journal of Economic Literature. v.36, n.4. American Economic Association |
| Páginas: |
pp. 2166-2168 |
| Año: |
Dec. 1998 |
| Solicitar por: |
HEMEROTECA J + datos de Fuente |
| Registro 5 de 7 |
| Autor: |
Davis, John-B (Reviewer) - |
| Título: |
Review of: The economics of Thomas Robert Malthus |
| Fuente: |
Journal of Economic Literature. v.36, n.3. American Economic Association |
| Páginas: |
pp. 1502-1504 |
| Año: |
Sept. 1998 |
| Solicitar por: |
HEMEROTECA J + datos de Fuente |
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