taxi

Winning entry to the Kaggle taxi competition
git clone https://esimon.eu/repos/taxi.git
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dest_mlp_1_cswdtx_alexandre.py (876B)


      1 import os
      2 import cPickle
      3 
      4 from blocks.initialization import IsotropicGaussian, Constant
      5 from blocks.algorithms import Momentum
      6 
      7 import data
      8 from model.dest_mlp import Model, Stream
      9 
     10 
     11 n_begin_end_pts = 5     # how many points we consider at the beginning and end of the known trajectory
     12 
     13 dim_embeddings = [
     14     ('origin_call', data.origin_call_train_size, 10),
     15     ('origin_stand', data.stands_size, 10),
     16     ('week_of_year', 52, 10),
     17     ('day_of_week', 7, 10),
     18     ('qhour_of_day', 24 * 4, 10),
     19     ('day_type', 3, 10),
     20     ('taxi_id', 448, 10),
     21 ]
     22 
     23 dim_input = n_begin_end_pts * 2 * 2 + sum(x for (_, _, x) in dim_embeddings)
     24 dim_hidden = [500]
     25 dim_output = 2
     26 
     27 embed_weights_init = IsotropicGaussian(0.01)
     28 mlp_weights_init = IsotropicGaussian(0.1) 
     29 mlp_biases_init = Constant(0.01)
     30 
     31 step_rule = Momentum(learning_rate=0.001, momentum=0.9)
     32 
     33 batch_size = 200
     34 
     35 max_splits = 100