Results 251 to 260 of about 12,931,660 (289)

Tomographic Reconstruction from Limited Angular Data

Journal of Computer Assisted Tomography, 1979
The nth moment of a projection Mn(phi) = rnp(r, phi) dr must be a trigonometric polynomial of degree less than or equal to n. Measuring Mn(phi i) for n + 1 arbitrary angles phi i allows reconstruction of Mn(phi) for all phi. Thus in principle, the exact knowledge of the shadow function within an arbitrarily narrow sector allows reconstruction of the ...
openaire   +2 more sources

Limitations on impedance inversion of band‐limited reflection data

GEOPHYSICS, 2000
A seismic approximate impedance log is often the ultimate output in the sequence of seismic data‐processing steps. In principle, the true acoustic impedance is obtainable from the inversion of full‐band impulse response. Because the seismic data necessarily is band limited, its inversion obviously would produce an approximate impedance log. A question
openaire   +1 more source

Sentiment analysis with limited training data

2013
Sentiments sind positive und negative Gefühle, Bewertungen und Einstellungen. Die Dissertation beschäftigt sich mit lernbasierten Systemen zur automatischen Analyse von Sentiments und Vergleichen in Texten in natürlicher Sprache. Die vorliegende Abeit leistet dazu drei Beiträge: 1. Bag-of-Opinions-Modell: Zur Vorhersage der Polarität und Intensität auf
openaire   +2 more sources

Data Imputation with Limited Data Redundancy Using Data Lakes

Proceedings of the VLDB Endowment
Data imputation is essential for many data science applications. Existing methods rely heavily on sufficient data redundancy from within-table values. However, many real-world datasets often lack such data redundancy, necessitating external data sources.
Chenyu Yang, Yuyu Luo, Chuanxuan Cui, Ju Fan, Chengliang Chai, Nan Tang   +5 more
openaire   +1 more source

Data limitations

2021
openaire   +1 more source

Limitations of nutritional data.

Epidemiology (Cambridge, Mass.), 1995
Lewis H. Kuller, Paolo G. Toniolo, Roy E. Shore   +2 more
openaire   +3 more sources

Cancer Statistics, 2021

Ca-A Cancer Journal for Clinicians, 2021
Rebecca L Siegel, Kimberly D Miller
exaly  

Cancer statistics, 2022

Ca-A Cancer Journal for Clinicians, 2022
Rebecca L Siegel, Kimberly D Miller, Ahmedin Jemal Dvm   +2 more
exaly  

Cancer statistics, 2023

Ca-A Cancer Journal for Clinicians, 2023
Rebecca L Siegel, Kimberly D Miller, Nikita Sandeep Wagle   +2 more
exaly  

Utility and Limitations of Claims Data

Annals of Internal Medicine, 1994
J A, Baron, J, Barrett
  +7 more sources