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@@ -158,7 +158,7 @@ impl AvellanedaStoikov {
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let mut first_trade_price = last_trade.price;
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for trade in self.trade_long_vec.deque.iter().rev() {
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- if last_trade_time - trade.time > dec!(6) {
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+ if last_trade_time - trade.time > Decimal::TEN {
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break;
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}
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@@ -308,7 +308,7 @@ impl AvellanedaStoikov {
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}
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pub fn update_sigma_square(&mut self) {
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- self.sigma_square = self.spread_max;
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+ self.sigma_square = self.spread_max * dec!(0.5);
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self.sigma_square.rescale(10);
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}
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@@ -364,23 +364,23 @@ impl AvellanedaStoikov {
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// 知情者概率大于平均值,拉开开单距离
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if self.vwpin_avg > Decimal::ZERO && self.vwpin > self.vwpin_avg {
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if self.inventory > Decimal::ZERO && self.ratio_edge > Decimal::ZERO {
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- self.ask_delta -= self.sigma_square.abs() * (Decimal::TWO - self.t_diff);
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+ self.ask_delta -= self.ratio_edge.abs() * (Decimal::TWO - self.t_diff);
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self.bid_delta += self.sigma_square.abs() * dec!(10);
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} else if self.inventory < Decimal::ZERO && self.ratio_edge < Decimal::ZERO {
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self.ask_delta += self.sigma_square.abs() * dec!(10);
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- self.bid_delta -= self.sigma_square.abs() * (Decimal::TWO - self.t_diff);
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+ self.bid_delta -= self.ratio_edge.abs() * (Decimal::TWO - self.t_diff);
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} else {
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self.ask_delta += self.sigma_square.abs() * dec!(10);
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self.bid_delta += self.sigma_square.abs() * dec!(10);
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}
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} else {
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if self.ratio_edge > Decimal::ZERO {
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- self.ask_delta -= self.sigma_square.abs() * (Decimal::TWO - self.t_diff);
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+ self.ask_delta -= self.ratio_edge.abs() * (Decimal::TWO - self.t_diff);
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self.bid_delta += self.sigma_square.abs() * dec!(5);
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} else if self.ratio_edge < Decimal::ZERO {
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self.ask_delta += self.sigma_square.abs() * dec!(5);
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- self.bid_delta -= self.sigma_square.abs() * (Decimal::TWO - self.t_diff);
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- } else {
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+ self.bid_delta -= self.ratio_edge.abs() * (Decimal::TWO - self.t_diff);
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+ } else if self.ratio_edge == Decimal::ZERO {
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self.ask_delta += self.sigma_square.abs() * dec!(5);
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self.bid_delta += self.sigma_square.abs() * dec!(5);
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}
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