Network Theory, Social Network Analysis, Community Detection, Yelp, R.
x$review_count, yelping_since = x$yelping_since, elite = x$elite, friends = x$friends, fans = x$fans, average_stars = x$average_stars) parse_list <- lapply(parse_list, FUN = function(x) ifelse(is.null(x), "", x)) df <- data_frame(user_id=parse_list$user_id, name=parse_list$name, review_count =