Project 3189: M. J. Hopkins, K. St. John. 2018. A new family of dissimilarity metrics for discrete character matrices that include inapplicable characters and its importance for disparity studies. Proceedings of the Royal Society B: Biological Sciences. 285 (1892):none yet.
Abstract
The use of discrete character data for disparity analyses has become more popular, partially due to the recognition that character data describe variation at large taxonomic scales, as well as the increasing availability of both character matrices co-opted from phylogenetic analysis and software tools. As taxonomic scope increases, the need to describe variation leads to some characters that may describe traits not found across all the taxa. In such situations, it is common practice to treat inapplicable characters as missing data when calculating dissimilarity matrices for disparity studies. For commonly used dissimilarity metrics like Wills's GED and Gower's coefficient, this can lead to the reranking of pairwise dissimilarities, resulting in taxa that share more primary character states being assigned larger dissimilarity values than taxa that share fewer. We introduce a family of metrics that proportionally weight primary characters according to the secondary characters that describe them, effectively eliminating this problem, and compare their performance to common dissimilarity metrics and previously proposed weighting schemes. When applied to empirical datasets, we confirm that choice of dissimilarity metric frequently affects the rank order of pairwise distances, differentially influencing downstream macroevolutionary inferences.Read the article »
Article DOI: 10.1098/rspb.2018.1784
Project DOI: 10.7934/P3189, http://dx.doi.org/10.7934/P3189
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 7630 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 211 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 479 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:206/5 |
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MorphoBank Project 3189
MorphoBank Project 3189
- Creation Date:
19 May 2018 - Publication Date:
06 December 2018 - Project views: 14482
- Matrix downloads: 10
Authors' Institutions
- American Museum of Natural History
- Hunter College - CUNY
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||||||||||
Melanie Hopkins Project Administrator | 47 | 1 | 1 | 211 | 0 | 92 | 0 | 0 | 7630 (6204, 0, 1426) | 0 | 7 | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M25496' (47 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Eudigraphis taiwanensis Last Modified in 06/14/18 | 42 | 119 | 119 | 0 | 50 | 0 | 0 | 1 |
[2] Glomeris marginata Last Modified in 06/14/18 | 34 | 127 | 127 | 0 | 50 | 0 | 0 | 1 |
[3] Cyliosoma sp. Last Modified in 06/14/18 | 44 | 119 | 119 | 0 | 48 | 0 | 0 | 1 |
[4] Glomeridesmus sp. Last Modified in 06/14/18 | 54 | 105 | 105 | 0 | 52 | 0 | 0 | 1 |
[5] † Cowiedesmus eroticopodus Last Modified in 12/06/18 | 174 | 26 | 26 | 0 | 11 | 0 | 0 | 1 |
[6] † Archidesmus macnicoli Last Modified in 12/06/18 | 137 | 41 | 41 | 0 | 33 | 0 | 0 | 1 |
[7] Petaserpes sp. Last Modified in 06/14/18 | 68 | 102 | 102 | 0 | 41 | 0 | 0 | 1 |
[8] Brachycybe lecontii Last Modified in 06/14/18 | 57 | 108 | 108 | 0 | 46 | 0 | 0 | 1 |
[9] Pseudopolydesmus sp. Last Modified in 06/14/18 | 37 | 122 | 122 | 0 | 52 | 0 | 0 | 1 |
[10] Prostemmiulus sp. Last Modified in 06/14/18 | 60 | 109 | 109 | 0 | 42 | 0 | 0 | 1 |
[11] Abacion magnum Last Modified in 06/14/18 | 63 | 107 | 107 | 0 | 41 | 0 | 0 | 1 |
[12] Cleidogona sp. Last Modified in 06/14/18 | 61 | 109 | 109 | 0 | 41 | 0 | 0 | 1 |
[13] † Gaspestria genselorum Last Modified in 12/06/18 | 164 | 24 | 24 | 0 | 23 | 0 | 0 | 1 |
[14] Narceus americanus Last Modified in 06/14/18 | 38 | 126 | 126 | 0 | 47 | 0 | 0 | 1 |
[15] Cambala annulata Last Modified in 06/14/18 | 69 | 104 | 104 | 0 | 38 | 0 | 0 | 1 |
[16] Cylindroiulus sp. Last Modified in 06/14/18 | 40 | 124 | 124 | 0 | 47 | 0 | 0 | 1 |
[17] † Crussolum spp. Last Modified in 12/06/18 | 193 | 18 | 18 | 0 | 0 | 0 | 0 | 1 |
[18] Scutigerina weberi Last Modified in 06/14/18 | 28 | 163 | 163 | 0 | 20 | 0 | 0 | 1 |
[19] Sphendononema guildingii Last Modified in 06/14/18 | 28 | 163 | 163 | 0 | 20 | 0 | 0 | 1 |
[20] Scutigera coleoptrata Last Modified in 06/14/18 | 0 | 185 | 185 | 0 | 26 | 0 | 0 | 1 |
[21] Lithobius forficatus Last Modified in 06/14/18 | 0 | 187 | 187 | 0 | 24 | 0 | 0 | 1 |
[22] Eupolybothrus cavernicolus Last Modified in 06/14/18 | 19 | 167 | 167 | 0 | 25 | 0 | 0 | 1 |
[23] Anopsobius giribeti Last Modified in 06/14/18 | 18 | 168 | 168 | 0 | 25 | 0 | 0 | 1 |
[24] Paralamyctes validus Last Modified in 06/14/18 | 22 | 166 | 166 | 0 | 23 | 0 | 0 | 1 |
[25] † Devonobius delta Last Modified in 12/06/18 | 134 | 66 | 66 | 0 | 11 | 0 | 0 | 1 |
[26] Craterostigmus tasmanianus Last Modified in 06/14/18 | 13 | 173 | 173 | 0 | 25 | 0 | 0 | 1 |
[27] Craterostigmus crabilli Last Modified in 06/14/18 | 45 | 145 | 145 | 0 | 21 | 0 | 0 | 1 |
[28] † Mazoscolopendra richardsoni Last Modified in 12/06/18 | 164 | 45 | 45 | 0 | 2 | 0 | 0 | 1 |
[29] Scolopendropsis bahiensis Last Modified in 06/14/18 | 26 | 164 | 163 | 0 | 22 | 0 | 0 | 1 |
[30] Akymnopellis chilensis Last Modified in 06/14/18 | 23 | 166 | 166 | 0 | 22 | 0 | 0 | 1 |
[31] Rhysida longipes Last Modified in 06/14/18 | 13 | 174 | 174 | 0 | 24 | 0 | 0 | 1 |
[32] Alipes grandidieri Last Modified in 06/14/18 | 20 | 167 | 167 | 0 | 24 | 0 | 0 | 1 |
[33] Cryptops hortensis Last Modified in 06/14/18 | 8 | 178 | 178 | 0 | 25 | 0 | 0 | 1 |
[34] Theatops spinicaudus Last Modified in 06/14/18 | 17 | 169 | 169 | 0 | 25 | 0 | 0 | 1 |
[35] Scolopocryptops sexspinosus Last Modified in 06/14/18 | 17 | 167 | 167 | 0 | 27 | 0 | 0 | 1 |
[36] Newportia adisi Last Modified in 06/14/18 | 17 | 169 | 169 | 0 | 25 | 0 | 0 | 1 |
[37] Mecistocephalus guildingii Last Modified in 06/14/18 | 12 | 169 | 169 | 0 | 30 | 0 | 0 | 1 |
[38] Tygarrup javanicus Last Modified in 06/14/18 | 27 | 155 | 155 | 0 | 29 | 0 | 0 | 1 |
[39] Notiphilides grandis Last Modified in 06/14/18 | 24 | 160 | 160 | 0 | 27 | 0 | 0 | 1 |
[40] Himantarium gabrielis Last Modified in 06/14/18 | 15 | 172 | 172 | 0 | 24 | 0 | 0 | 1 |
[41] Stenotaenia linearis Last Modified in 06/14/18 | 16 | 166 | 166 | 0 | 29 | 0 | 0 | 1 |
[42] Henia brevis Last Modified in 06/14/18 | 32 | 155 | 154 | 0 | 25 | 0 | 0 | 1 |
[43] Strigamia maritima Last Modified in 06/14/18 | 3 | 179 | 179 | 0 | 29 | 0 | 0 | 1 |
[44] Hydroschendyla submarina Last Modified in 06/14/18 | 22 | 163 | 163 | 0 | 26 | 0 | 0 | 1 |
[45] † Kachinophilus pereirai Last Modified in 12/06/18 | 100 | 100 | 100 | 0 | 11 | 0 | 0 | 1 |
[46] Hanseniella sp. Last Modified in 06/14/18 | 48 | 104 | 104 | 0 | 59 | 0 | 0 | 1 |
[47] Scutigerella sp. Last Modified in 06/14/18 | 43 | 109 | 109 | 0 | 59 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 14482 | |
Project overview | 1175 | |
Bibliography | 623 | |
Media views | 2707 | Media search (2296 views); M645535 (411 views); |
Matrix views | 925 | Matrix landing page (899 views); Ingroup (26 views); |
Views for media list | 824 | |
Specimen list | 1567 | |
Taxon list | 6656 | |
Documents list | 5 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 177 | |
Project downloads | 167 | |
Matrix downloads | 10 | Ingroup (10 downloads); |