The fractional coordinates of the atomic sites were also one-hot encoded. This is done based on the observation that the fractional coordinates present in the already known crystal structures can be separated into distinct bins. The combinations of the three fractional sites (x,y,z) can also be grouped together based on the frequency of their occurrence. Since the values in our input representation of the unit cell exist on a continuous spectrum determined by the scale and units of the relevant parameters, we first need to round off the values in order to bin them. However, rounding them off to some arbitrary values would include unwanted errors by misplacing commonly found values in our representation. To deal with this, we bin the different parameters around the values which frequently appear in the distribution of that parameter in the whole dataset.