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Polytomy

Known as: Polytomous 
In biology, a polytomy /pəˈlɪtəmi/ is a section of a phylogeny in which the relationships cannot be fully resolved to dichotomies, thus giving many… 
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Related topics

Related topics

9 relations
CladisticsComputational phylogeneticsGene poolMolecular clock

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
2013
2013
Conditional Maximum Likelihood Estimation in Polytomous Rasch Models Using SAS
IRT models are widely used but often rely on distributional assumptions about the latent variable. For a simple class of IRT… 
Review
2012
Review
2012
Differential Item Functioning classification for polytomously scored items
Differential item functioning (DIF) refers to a difference in the way a test item functions for comparable groups of test takers… 
2011
2011
Statistical classification and principles of human learning
Statistical classification and principles of human learning In the application of any statistical analysis method to the modeling… 
2010
2010
Understanding the Response Structure and Process in the Polytomous Rasch Model
Recent discussions with Guanzhong Luo helped in the articulation of the model for this Report. The research reported in this… 
Review
2007
Review
2007
A multilevel multinomial logit model for the analysis of graduates’ skills
The main goal of the paper is to specify a suitable multivariate multilevel model for polytomous responses with a non-ignorable… 
2007
2007
Adaptive testing for hierarchical student models
This paper presents an approach to student modeling in which knowledge is represented by means of probability distributions… 
Highly Cited
2001
Highly Cited
2001
On measurement properties of continuation ratio models
Three classes of polytomous IRT models are distinguished. These classes are the adjacent category models, the cumulative… 
1996
1996
Dichotomous and polytomous identification keys for females of the genera Prodorylaimus Andrássy, 1959 and Laimydorus Siddiqi, 1969 (Nematoda: Dorylaimoidea).
Review
1994
Review
1994
Book Review: Computer Program Exchange
The linear factor analysis model produces biased results when applied to polytomous data (Bernstein & 
1993
1993
An Introduction to Polytomous Item Response Theory Models.
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