原文：We first compute futures market imbalance for each sector as the ratio of two variables. The numerator is the dollar valueof short minus long positions held by commercial traders in the Commitments of Traders in Commodity Futures, summed across all commodities in that sector. The denominator is the dollar value of short plus long positions held by commercial traders, summed across all commodities in that sector.


大概意思这样：商品失衡=（空头－多头）/（空头+多头）
这里的空头多头是商品期货市场单个商品的，我想问多头、空头还能看量？怎么看啊，我怎么查上海期货交易所只有持仓量、成交量什么的啊？