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deep4cast's Issues

Improve the levels partitioning algorithm

Make the number of levels parameter match the severity levels in business rather than a sensitive parameter with no physical meaning in business.

Once we have that, then users wouldn't even need to input the number of anomalies parameter and still obtain a good anomaly detection model.

Fix initializations when extending from Model

We want input and output dimensions to be user specified when initialization the model and forecaster class. This causes problems, because we have currently delayed initializations. For example, no real custom models or loss functions are currently accepted by the forecaster.

Ensemble Models

  1. Horizon = 50, Lag = 500 wrt original timestamp
  2. Downsample rate: 1, 2, 3, 10, 25, 50
  3. Sub-lag: Lag/Downsample rate

Extensions:

  1. Dealing with prime numbers or number with fewer divisors
  2. Elastic network capacity corresponding to different sub-lag(input-size)

Design a network topology function

This function takes the following data specs <input dimension, output dimension, history length, forecast horizon> as input and outputs the network topology.

Do this for CNN first. This would eliminate the need to parameter sweeping for CNNs, which include lots of nested parameters.

Fix hyperoptimization and CNTK

Hyperoptimizer issues error tracing back to CNTK. Same code runs fine in tensorflow. Error can be observed in tutorials/hyperoptimization.ipynb

Add static and time-dependent covariates to fit and predict methods

Add static and time-dependent covariates to fit and predict methods in forecaster module. I suspect it is best to have keras model that exepcts covariates all conform to the same interface in terms of how they expect the input data to propagate through the network.

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