Likelihood Asymptotics for the Discrimination Problem

1987 ◽  
pp. 167-177
Author(s):  
D. L. McLeish ◽  
Christopher G. Small
Keyword(s):  
Discrimination Problem

"Multiple Transfer Paradigms following Discrimination Problem Solution in Monkeys": Erratum.

1969 ◽  
Vol 67 (2, Pt.1) ◽  
pp. 144-144
Author(s):  
Michael Sledjeski ◽  
Gilbert M. French
Keyword(s):  
Discrimination Problem ◽  
Problem Solution

Habit strength as a function of drive in a brightness discrimination problem.

1956 ◽  
Vol 52 (1) ◽  
pp. 58-64 ◽  
Author(s):  
Eugene Eisman ◽  
Adele Asimow ◽  
Irving Maltzman
Keyword(s):  
Discrimination Problem ◽  
Brightness Discrimination ◽  
Habit Strength

Energy spectra for underground explosions and earthquakes

1963 ◽  
Vol 53 (5) ◽  
pp. 997-1005
Author(s):  
G. E. Frantti
Keyword(s):  
Energy Density ◽  
Frequency Dependence ◽  
Discrimination Problem ◽  
Seismic Source ◽  
Energy Spectra ◽  
Time Duration ◽  
Source Discrimination ◽  
Earthquake Energy

Abstract Energy density for the entire seismogram is examined as a function of frequency for underground explosions and earthquakes. Anomalous differences in the spectra appear to correlate with the time duration of the source. Ratios of aftershock to earthquake energy show a relatively flat frequency dependence. In contrast, corresponding ratios for nuclear shot-collapse events change rapidly with increasing frequency. Analysis of these data suggests that measurements of total seismogram energy might be usefully applied in the seismic source discrimination problem.

Effect of Reinforcement of the Negative Discriminandum in Differential Conditioning

1964 ◽  
Vol 14 (1) ◽  
pp. 107-110 ◽  
Author(s):  
Peter J. Donovick ◽  
Leonard E. Ross
Keyword(s):  
Phase I ◽  
Discrimination Learning ◽  
Differential Conditioning ◽  
Discrimination Problem ◽  
Single Stimulus ◽  
Female Rats ◽  
Second Phase ◽  
Learning Situation ◽  
Learning Conditions ◽  
The Difference

The present investigation was concerned with the reduction of inhibition associated with the negative discriminandum in a single stimulus discrimination learning situation. In Phase I 33 female rats were trained on a black-white discrimination problem. In the second phase Ss were divided into three groups which received: (a) 100% reinforcement to both the old positive and negative discriminanda; (b) four trials per day to the old negative, 100% reward; (c) eight trials per day to the old negative, 100% reward. As in previous studies, which employed simultaneous discrimination learning conditions, speed to the old negative remained significantly below speed to the old positive in the second phase. However, unlike the previous results, the difference decreased over trials. No differences were found between the groups that had trials to the old negative cue only, or between these groups and either speed to the old positive or the old negative in the case of the group receiving reward on both cues.

Transposition of Probability Matching in Pigeons

1965 ◽  
Vol 16 (1) ◽  
pp. 115-118
Author(s):  
W. F. Angermeier ◽  
J. Higgins ◽  
D. Locke
Keyword(s):  
Discrimination Problem ◽  
Probability Matching ◽  
Reinforcement Probability ◽  
Matching Response ◽  
Experimental Criterion

Four pigeons were trained to match reinforcement probability of two discs illumined with different degrees of brightness. After Ss had reached the prescribed experimental criterion, the dimmer of the two discs was now made the brighter of the two. In this way, transposition of the probability matching response was investigated. All animals showed this transposition. It was concluded that the probability matching response in pigeons was a fairly stable response, and that it could be transposed to other levels of discrimination, especially when degrees of brightness were used as the discrimination problem.

SIMILARITY OF STIMUU AND OF RESPONSES IN THE SUCCESSIVE DISCRIMINATION PROBLEM

1959 ◽  
Vol 30 (4) ◽  
pp. 471-480
Author(s):  
Charles C. Spiker ◽  
Ruth B. Holton
Keyword(s):  
Discrimination Problem ◽  
Successive Discrimination

LADI: A Latent Discriminant Model for Analyzing Marketing Research Data

1989 ◽  
Vol 26 (1) ◽  
pp. 15-29 ◽  
Author(s):  
William R. Dillon ◽  
Narendra Mulani
Keyword(s):  
Discrimination Problem ◽  
Group Structure ◽  
Structural Parameters ◽  
Marketing Research ◽  
Statistical Test ◽  
Model Based Clustering ◽  
Discriminant Model ◽  
Basic Model ◽  
Mixing Parameters ◽  
Scale Properties

A general, flexible LAtent DIscriminant model is described. LADI is a model-based clustering procedure, derived from a specific conceptualization in which the discrimination problem is viewed in a latent mixture context. The basic model yields maximum likelihood (ML) estimates of mixing parameters and structural parameters that define the latent clusters in terms of the responses to a set of descriptor variables. Among other features, the model accommodates descriptor variables having different scale properties, allows for the investigation of group structure, provides a statistical test of the number of latent clusters to retain, and allows for constraints to be imposed on the solution.

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