pittsburgh | R Documentation |
A dataset representing the graph structure of 402 census tracts of Allegheny County, PA.
pittsburgh
A list with 7 elements:
A
A dense matrix capturing the connections between spatially adjacent census tracts in Allegheny County.
sA
A sparse matrix representation of the census tracts' adjacency matrix.
xy
A matrix indicating the spatial location of each census tract.
f
Artificial signal with inhomogeneous smoothness across nodes and two sharp peaks near the center. This signal is formed using a mixture of five Gaussians in the underlying spatial coordinates.
y
Noisy version of the signal.
f1
Synthetic signal, possibly generated with specific smoothness parameters.
geo
Geometry data for the census tract nodes.
Data and associated materials were sourced from codes provided by Yu-Xiang Wang (UC Santa Barbara) and are associated with the referenced paper.
Wang, Y. X., Sharpnack, J., Smola, A. J., & Tibshirani, R. J. (2016). Trend Filtering on Graphs. Journal of Machine Learning Research, 17, 1-41.
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