I do not know how these tools work today but I can imagine a dictionary becoming standard for each given field and being provided with every future .pdf paper a

I do not know how these tools work today but I can imagine a dictionary becoming standard for each given field and being provided with every future .pdf paper as a companion in the form of a .csv sparse matrix or similar format. Such dictionaries will be put forward by researchers for exchanging data in the smoothest way, agreed as a standard after some time and then forced into adoption worldwide. We will get there for sure, some fields before others, some industries have started already (aeronautics, automotive).