Analyze Json

product.json

{
	"ASIN": "",
	"productInfo": [{
		"productDetail": {
			"UPC": "",
			"bestSellerRank": ["#1 ['cate1','cate2',...]",""],
			},
		"name": "",
		"img": "",
		"productDescription": "",
		"feature":["",""],
		"brand": {"link":"", "name":""},
		"timestamp": ""
		}],
	"seller": [
		{"timestamp": Date(),
		"seller":[{"name": "", "link": "", "img": ""}, {}]},
		{}...],
	"category": [
		["root", "parent", "child"],
		[]...]
	"offer": [{"info":[
				{"seller":{"link":"","name":"","img":""},
			  	"price":0,	#may be str '$1.0'
			  	"timestamp": Date()},{}...],
			  	"timestamp": Date()
			  },
			  {}...]
	"review": [{
		"star": 1,
		"helpRate": "3|15",
		"publishTime": "",
		"summary": "",
		"content": "",
		"consumer": "",
		"profileUrl": ""
		},{}...],
	"stats_info": {
		"keywords": [["word1", 3], #word and word frequency
			["word2", 2],...]
		"review_count": 1, #number of reviews
		"star_info": {1: 1,
			2: 0,
			3: 0,
			4: 0,
			5: 0}  #distribution of reviews' star
		"avg_info": 1 #average star of this commodity
	}
}