Referring
Cao, Hansch, and Wang (2004) "The Informational Content of an Open Limit Order Book"
$$ \mbox{WP}^{n_1 - n_2} = \frac{\sum_{j=n_1}^{n_2} (Q_j^d P_j^d + Q_j^s P_j^s)}{(Q_j^d + Q_j^s)} $$
Did someone know maybe some variation of that equation that penalizing quotes that are more away from best quotes? I think result of that formula is easy to manipulate by placing limit orders in large amount at prices that have very low execution probability in some time.
I'm trying to modify that formula, with inputing additional touching probability for each ask and bid level calculated from book market orders inflow in some sampled time T to ability for penalize levels on what orders can be easy cancelled before execution.