Akalanka

`tr.join` is an efficient way to concatanate strings than using a for loop

Dissolve loop to str join

1

A simple change: Dissolve the for loop that concatenates a string to str.join.

Replace invoking `dict` constructor with `dict-comprehension` which much faster.

`dict` comprehension is faster than invoking `dict` constructor

`dict` comprehension is faster than using `dict` constructor

`dict` comprehension is faster than invoking a `dict` constructor

`dict` comprehension is faster than invoking the `dict` constructor

According to the Tensorflow documentation, batch_and_drop_remainder is deprecated. Instead should use batch(batch_size, drop_remainder=True).

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