- January 15th, 2018, 6:37 am
- Forum: Numerical Methods Forum
- Topic: What makes autoregression different from multiple linear regression？
- Replies:
**2** - Views:
**1522**

Thank you Alan. But when I use matlab to estimate its VAR model, besides the coefficients in the linear equations, matlab also estimates the covariance matrix as unknowns. In multiple linear regression, there is no covariance matrix or autocorrelation to estimate, because samples are assumed to be i...

- January 10th, 2018, 4:12 pm
- Forum: Numerical Methods Forum
- Topic: What makes autoregression different from multiple linear regression？
- Replies:
**2** - Views:
**1522**

For an AR(2) process Yt=a1*Yt-1+a2*Yt-2+b, is it different from Y=a1*X1+a2*X2+b, where X1 and X2 can be replaced by Yt-1 and Yt-2 respectively? As I know, the estimation of both models can use least square method and some book state’ We can therefore state that in the case of VAR processes, the LS e...

- May 24th, 2017, 8:33 am
- Forum: Trading Forum
- Topic: How to trade open price in practice as in my backtest?
- Replies:
**10** - Views:
**1934**

Thank you. I am new in this area. Do you have any recommeded paper or book on this topic?

- May 23rd, 2017, 9:40 am
- Forum: Trading Forum
- Topic: How to trade open price in practice as in my backtest?
- Replies:
**10** - Views:
**1934**

Thank you all for your replies. My strategy is that first to forecast the up or down of a stock in the coming 5 days. If up, I buy, otherwise short. After 5 days, I close my position. In my back test, I just use the open price to open and close my position. 5 days should be a relatively long period....

- May 22nd, 2017, 6:43 am
- Forum: Trading Forum
- Topic: How to trade open price in practice as in my backtest?
- Replies:
**10** - Views:
**1934**

Thank you. But which price should I use in back test? Should I use the first 5 minute price averaged by volume?

- May 21st, 2017, 6:14 am
- Forum: Trading Forum
- Topic: How to trade open price in practice as in my backtest?
- Replies:
**10** - Views:
**1934**

I have developed a strategy by trading open price. However, how should I make order in practice to make the return of my strategy as close as in backtest? There are some ways I can think of: 1) Send limit order with limit price in call auction period before market open. This way seems to able to get...

- July 11th, 2016, 3:13 am
- Forum: Numerical Methods Forum
- Topic: Is Bayesian Logistic Regression useful in predicting financial price change?
- Replies:
**0** - Views:
**1014**

I am developing a factor model to predict price change. Bayesian Logistic Regression seems more advanced than the traditional Logistic Regression. However, as in this matlab example http://cn.mathworks.com/help/stats/examples/bayesian-analysis-for-a-logistic-regression-model.html Each feature vector...

- April 14th, 2016, 12:33 am
- Forum: Numerical Methods Forum
- Topic: How to calibrate a linear regression model to forecast asset return?
- Replies:
**5** - Views:
**2198**

Thank you Alan. What I can do is only suggestion one.Developing my model based on recent literatures and hope it works.

- April 13th, 2016, 12:25 am
- Forum: Numerical Methods Forum
- Topic: How to calibrate a linear regression model to forecast asset return?
- Replies:
**5** - Views:
**2198**

May be that's right, but as I know, factor model is still popular.

- April 12th, 2016, 2:54 am
- Forum: Numerical Methods Forum
- Topic: How to calibrate a linear regression model to forecast asset return?
- Replies:
**5** - Views:
**2198**

<t>I want to calibrate a mulitvariate linear regression model for forecasting asset return. Now I am doing the following procedure. Subjectively picking up observable factors, like interest rate, fx rate, equity index. Download the data from 2007 to 2016. Select a rolling window, with size 1 year, 2...

- April 6th, 2016, 7:30 am
- Forum: Numerical Methods Forum
- Topic: Is there any open-source robust optimization software for portfolio selection?
- Replies:
**1** - Views:
**1903**

<t>I am a beginner in robust optimization. I want to get a robust portfolio with a Worst-Case Conditional Value-at-Risk method. This requires a minimization of loss considering various scenarios with parametric uncertainty. Finally this leads to a problem like min_x(max_U(g(x,U))), where x is the po...

- March 27th, 2016, 4:50 am
- Forum: Trading Forum
- Topic: Does mean-variance allocation make sense in practice?
- Replies:
**6** - Views:
**2169**

<t>Thank you all for your suggestions.Alan, I have tried adding constrains to the mean-variance strategy. If there are n ETF, then each ETF's weight is in the range [0,1/n] if forecasted return is positive, or [-1/n,0] if forecasted return is negative. The after minimization, the weight of each ETF ...

- March 25th, 2016, 7:43 am
- Forum: Trading Forum
- Topic: Does mean-variance allocation make sense in practice?
- Replies:
**6** - Views:
**2169**

<t>There are about 10 ETF as assets. I am comparing the following strategiesA. mean-variance allocation strategy: 1. Forecast asset return; 2.Forecast asset covariance; 3 Minimize portfolio volatility ? portfolio return to calculate ETF weights. Result: portfolio return annual 5.5%, volatility 3.6%,...

- February 3rd, 2016, 12:25 am
- Forum: Trading Forum
- Topic: How to make order in practice when doing delta hedging?
- Replies:
**4** - Views:
**3243**

<t>Thank you DavidJN. I have implemented a simulation to test hedging strategies. However, I am not sure everything in the real trading environment can be easily simulated. Especially the market impact effect. Say I want to close a long position of 200 contracts, but on on the market there are only ...

- February 1st, 2016, 8:33 am
- Forum: Trading Forum
- Topic: How to make order in practice when doing delta hedging?
- Replies:
**4** - Views:
**3243**

<t>Dear all,I am doing a project that requires implementing delta hedging in practice. I have some question and don?t know how to begin:(1) If my plain vanilla option is deep in the money at its expiration. Then I must hold a large amount of the underlying future. If the option payoff at the future?...

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