Add tf.keras model implementation#27

Merged

urialon merged 86 commits intotech-srl:masterfrom

Jul 17, 2019

Commits on Mar 21, 2019

keras model: use `tf.data` reader [now training works]
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Commits on Mar 22, 2019

export Config to config.py; common.SpecialDictWords(Enum);
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add common.tf_get_first_true()
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model_base: use common.SpecialDictWords
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keras model: add prediction tf graph, add evaluation f1 metric; pass reader.dataset directly to model.fit() instead of using reader.dataset.iterator; rename "Model" ==> "Code2VecModel"; use common.…
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export word prediction calculation from model into WordPredictionLayer
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impl keras Words Subtoken Metrics (Precision, Recall, F1)
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export the `topk` param into config.TOP_K_WORDS_CONSIDERED_DURING_PREDICTION
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Commits on Mar 24, 2019

base model redactor; OOV+PAD special words instead of NoSuch; impl save+load keras model; reader refactor
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Commits on Mar 25, 2019

fix store+load model (to use RELEASE param correctly); fix transform layer to not use bias (now #trainable_params equals to orig tf model); use tf.train.AdamOptimizer() as optimizer instead keras "…
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Commits on Mar 26, 2019

Commits on Mar 27, 2019

reader: minor refactor + fix csv_record_defaults
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Commits on Mar 28, 2019

export vocabs management into `vocabularies.py`; new Code2VecVocabs class; migrate lookup tables handling into `Vocab`
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Commits on Apr 2, 2019

keras model store+load: use tf checkpoint to store optimizer status; maintain number of epochs for a model (recovered on load); model_base have no session object (keras model doesn't need it now); …
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Commits on Apr 3, 2019

Commits on Apr 5, 2019

Commits on Apr 6, 2019

Commits on Apr 15, 2019

tensorflow model minor refactor
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Commits on Jun 3, 2019

Commits on Jun 27, 2019

tensorflow model: print # trainable params
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Commits on Jul 17, 2019