Results 271 to 280 of about 767,513 (309)

The visual N1 component as an index of a discrimination process

Psychophysiology, 2000
Many previous studies have demonstrated that the visual N1 component is larger for attended‐location stimuli than for unattended‐location stimuli. This difference is observed typically only for tasks involving a discrimination of the attended‐location stimuli, suggesting that the N1 wave reflects a discrimination process that is applied to the attended
E K, Vogel, S J, Luck
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Speech and Singing Discrimination for Audio Data Indexing

2014 IEEE International Congress on Big Data, 2014
This study investigates the technique of automatically discriminating speech from singing voices for audio data indexing. We propose a discrimination system based on both timbre and pitch feature analyses. In using timbre features, voice recordings are converted into Mel-Frequency Cepstral Coefficients and their first derivatives and then analyzed ...
Wei-Ho Tsai, Cin-Hao Ma
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The risk of malignancy index in discrimination of adnexal masses

International Journal of Gynecology & Obstetrics, 2007
To assess the ability of the risk of malignancy index (RMI) based on a serum CA125 level, ultrasound findings and menopausal status, to discriminate benign from malignant adnexal masses.Between September 2002 and November 2004, 296 women with adnexal masses were enrolled. The sensitivity, specificity, positive (PPV) and negative predictive values (NPV)
S, Ulusoy, O, Akbayir, C, Numanoglu, N, Ulusoy, E, Odabas, A, Gulkilik   +5 more
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Semi-supervised neighborhood discrimination index for feature selection

Knowledge-Based Systems, 2020
Abstract Neighborhood discriminant index (NDI) is an effective feature selection method for supervised learning. In reality, it is easy to obtain unlabeled data and is costly to tag them all. Thus, the given dataset commonly has only a small amount of tagged samples and a large amount of unlabeled ones, which cannot be handled by supervised learning ...
Qing-Qing Pang, Li Zhang 0004
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Experiments with discrimination-tree indexing and path indexing for term retrieval

Journal of Automated Reasoning, 1992
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Pain Disability Index: Construct and discriminant validity

Archives of Physical Medicine and Rehabilitation, 1991
The Pain Disability Index (PDI) was developed as a self-report measure of general and domain-specific, pain-related disability. This study's purpose was twofold: (1) to assess construct validity of the scale relative to other measures of pain-related disability and psychologic distress and (2) to assess the strength of the PDI, independent of pain ...
A, Jerome, R T, Gross
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Quality of indexing in online databases: An alternative measure for a term discriminating index

Information Processing & Management, 1988
Abstract An alternative measure to White & Griffith's term discriminating index is proposed. The measure takes the collection size of a database into consideration and, unlike White & Griffith's measure, its value can never exceed 1.
Isola Ajiferuke, Clara M. Chu
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A discriminant function index for information system evaluation

Journal of the American Society for Information Science, 1974
AbstractA Discriminant Function Index is proposed for use in the evaluation of information storage and retrieval systems which takes into account the interdependencies between the measured variables and the relative value placed on these variables by the system evaluator.
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A Density Discriminant Index for Cluster Validation

2019 11th International Conference on Information Technology and Electrical Engineering (ICITEE), 2019
Clustering analysis is widely applied in several domains of study. Using a suitable number of clusters is one of the most important factors to influence the performance of clustering. Several algorithms of cluster validation have been developed to find such a number.
Supphawarich Thanarattananakin, Praisan Padungweang, Worarat Krathu   +2 more
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Improving the slope index as a discrimination measurement

Journal of Clinical Epidemiology, 2002
Abstract Background & Purpose: It has been demonstrated that analysis of ROC area can be somewhat insensitive to observed differences in discrimination compared with the Normalized Discrimination Index (NDI) and the Slope Index (SI) (MDM 1999, p524).
MT Karafa, NV Dawson
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