Fig. 6: The spatial distribution of queried POIs in Houston.
From: Counterfactual mobility network embedding reveals prevalent accessibility gaps in U.S. cities
We query sports POIs by two methods - retrieving POIs with the highest accessibility from high-income neighborhoods and POIs with the highest inner product with the embedding of the highest L(income). Red, blue, and black pointers represent POIs retrieved by the statistic method, embedding method, and both methods. Compared with red pointers, blue pointers locate in regions where the income level is greater than the white ratio level, capturing the advantage of income on accessing sports POIs in low white ratio neighborhoods.
