Sunday, June 28, 2015

Cross-correlations of American baby names

http://www.pnas.org/content/early/2015/06/08/1507143112/suppl/DCSupplemental

http://www.americannamesociety.org/video-cross-correlations-of-american-baby-names/

Video: cross-correlations of American baby names

Check out these videos that analyze baby names to demonstrate the changing cultural areas within the United States over time.
These videos are provided by the National Academy of Sciences of the United States of America. The following description comes from their website:
“For each year, we assigned colors to the states according to the method explained in SI Text, Principal Component Analysis and Hierarchical Clustering. States that share similar colors have similar distributions of the baby names. This notion of similarity comes from the PCA (details regarding this method are provided in SI Text, Principal Component Analysis and Hierarchical Clustering). Although northern and southern states belong to two distinct cultural areas during the first decades of the 20th century, a new configuration of states emerges at the end of the century, where central and coastal states (with very long range correlations covering thousands of miles of physical distance) form roughly two different cultural areas.”

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    Movie S1.
    For each year, we assigned colors to the states according to the method explained in SI Text, Principal Component Analysis and Hierarchical Clustering. States that share similar colors have similar distributions of the baby names. This notion of similarity comes from the PCA (details regarding this method are provided in SI Text, Principal Component Analysis and Hierarchical Clustering). Although northern and southern states belong to two distinct cultural areas during the first decades of the 20th century, a new configuration of states emerges at the end of the century, where central and coastal states (with very long range correlations covering thousands of miles of physical distance) form roughly two different cultural areas. This movie shows the results of the analysis performed on baby girl names.
  • Movie S2.
    For each year, we assigned colors to the states according to the method explained in the text. States that share similar colors have similar distributions of the baby names. This notion of similarity comes from the PCA (details regarding this method are provided in the full article). Although northern and southern states belong to two distinct cultural areas during the first decades of the 20th century, a new configuration of states emerges at the end of the century, where central and coastal states (with very long range correlations covering thousands of miles of physical distance) form roughly two different cultural areas. This movie shows the results of the analysis performed on baby boy names.
  • Movie S3.
    Hierarchical clustering of the states in every year. This movie describes the results of the analysis of the previous video and, though a different method, provides the same information about the evolution of the cultural areas of the United States. Details on the clustering method are given in SI Text, Principal Component Analysis and Hierarchical Clustering. The social evolution of geographical correlations is very clear. This movie shows the results of the analysis performed on baby girl names.
  • Movie S4.
    Hierarchical clustering of the states in every year. This movie reflects the analysis of the previous video and, though a different method, provides the same information about the evolution of the cultural areas of the United States. Details on the clustering method are given in the full article. The social evolution of geographical correlations is very clear. This movie shows the results of the analysis performed on baby boy names.