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1 1 Chart Pattern Matching in Financial Trading Using RNN Hitoshi Harada CTO Make you trade ideas into AI. Start free. On mobile.
2 What Technical Traders Are Looking For 2 Entry Point
3 Diversity Of The Pattern - All Downtrend 3
4 Problem And Needs - Fuzzy Pattern Recognition 4 Fuzzy Pattern Recognition for everyone Generalization (no hand crafted features) Multiple time series (OHLC price + indicators) Time scale, value scale, distortion Zhe Zhang, Jian Jiang, Xiaoyan Liu, Ricky Lau, Huaiqing Wang, Rui Zhang: A Real Time Hybrid Pattern Matching Scheme for Stock Time Series, 2010 James N.K. Liu *, Raymond W.M. Kwong : Automatic extraction and identification of chart patterns towards financial forecast, 2006
5 How To Solve The Problem? 5 ah p down trend SPEECH RECOGNITION WITH DEEP RECURRENT NEURAL NETWORKS, Hinton, et al Capitalico
6 Interactive Training Data Collection & Training 6
7 Our Approach - Fuzzy Pattern Recognition without Programming 7 Train by what you see & judge No programming nor conditional setting, but purely from charts like traders do Multi-dimensional input Not only the single timeseries data of price movement but also various indicators altogether
8 Experiments Deep Learning Based Approach 8 Network Output Input: N-dim Fully Connected Layer Output Sigmoid LSTM Layer x 2 or 4 ( x250 units ) Fully Connected Layer ( x250 units ) Dropout Output Sigmoid Fully Connected Sigmoid Output: 1-dim confidence level Sigmoid Fully Connected LSTM LSTM Training Align with fixed number of candles Mean squared error for loss AdaDelta for optimizer Fully Connected LSTM LSTM LSTM LSTM Fully Connected Fully Connected Input BPTT through aligned length Fully Connected Input Data 1k+ samples collected by experts Input about hundred instances for each strategy Time
9 y-axis: confidence E xpe r i m e nt s Fit t ing Reas o n abl y x-axis: time (1.0=entry point) blue: training data / orange: testing data 9
10 Experiments Framework 10
11 Dropout 11 Dropout vs # of training samples Bigger Mini-Batches by looping samples Made it Adaptive depending on importance dropout enabled (x: iteration count, y: loss) dropout w/ bigger mini-batches (x: iteration count, y: loss)
12 Forget Gate Bias (Learning To Forget: Continual Prediction With Lstm, Felix Et Al.) 12
13 Trial And Error To Speed Up Training 13 Dynamic Dropout Dynamic Batchsize Multi-GPU Training Other Frameworks like Keras GRU IRNN Lot more
14 Conclusion & Future Work Previous studies have limitations to difficulty of feature crafting. LSTM based deep neural network fits well with individual patterns. LSTM-variant doesn t make much difference, but forget-gate bias, normalization, preprocessing, and modeling etc. matter Build better base model by pre-training Reinforcement Learning using profit and risk preference Visualize and rationalize LSTM decision making Generative Model
15 QUESTIONS AND ANSWERS Make you trade ideas into AI. Start free. On mobile. / info@alpacadb.com
16 References 16 Ken-ichi Kainijo and Tetsuji Tanigawa: Stock Price Pattern Recognition - A Recurrent Neural Network Approach -, 1990 S Hochreiter, J Schmidhuber: Long short-term memory, 1997 FA Gers, J Schmidhuber, F Cummins: Learning to forget: Continual prediction with LSTM, 2000 James N.K. Liu *, Raymond W.M. Kwong: Automatic extraction and identification of chart patterns towards financial forecast, 2006 X Guo, X Liang, X Li: A stock pattern recognition algorithm based on neural networks, 2007 Z Zhang, J Jiang, X Liu, R Lau, H Wang: A real time hybrid pattern matching scheme for stock time series, 2010 A Graves, A Mohamed, G Hinton: Speech recognition with deep recurrent neural networks, 2013 A Graves, N Jaitly: A Mohamed, Hybrid speech recognition with deep bidirectional LSTM, 2013 Tara N. Sainath, Oriol Vinyals, Andrew Senior, Has im Sak: CONVOLUTIONAL, LONG SHORT-TERM MEMORY, FULLY CONNECTED DEEP NEURAL NETWORKS
17 Need For Gpu And Distributed Computation 17 Model Training Takes around 10 minutes on a single GPU core Requires 2GB of GPU RAM Backtesting Calculate various metrics over the historical data Livetesting Thousands of models need to monitor live candles and update the state of LSTM
18 Need For Distributed Computation 18 DB Postgresql Redis etcd Market Data Historical Real time Load Balancer WEB Flask Live Queue Celery WORKER Algos = Market Watch ~10MB tesla k80 x1-10k Trading
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