Mathematica has the built-in function TextStructure, with the option "DependencyStrings" that provides the dependency strings of a sentence. Unfortunately, this function is incredibly slow.

 Timing@TextStructure["He wrote a book. I read the book he wrote.", 
  "DependencyStrings", PerformanceGoal -> "Speed"]
{0.59375, {"(wrote, 2)((nsubj, (He, 1)), (dobj, (book, 4)((det, (a, \
3)))))", "(read, 2)((nsubj, (I, 1)), (dobj, (book, 4)((det, (the, \
3)), (rcmod, (wrote, 6)((nsubj, (he, 5)))))))"}}

As seen it in the example above, two sentences take 0.6 of a second. Does anyone how to speed it up or is there an alternative, as the aim is to use it on the dataset with 15,000+ observations?

  • $\begingroup$ Have you tried using NLTK. I think it does dependency analysis. It is written in Python so easy to call from WL. $\endgroup$ Commented Mar 3, 2020 at 18:13
  • $\begingroup$ The aim is to use Wolfram language, as I am aware there are more efficient functions in Python. $\endgroup$
    – Tim B
    Commented Mar 5, 2020 at 12:22
  • $\begingroup$ I would like to use WL for everything too, but I often have to take a more pragmatic "use the right tool for the job" approach. It may be because of WL's excessive resource (CPU / Memory) requirements, missing functionality, bugs, ... $\endgroup$ Commented Mar 5, 2020 at 22:35
  • $\begingroup$ Agreed, but the requirement of my research is only to use WL, unfortunately, my hands are tied. $\endgroup$
    – Tim B
    Commented Mar 5, 2020 at 22:46
  • 1
    $\begingroup$ No worries, I am aware of the fact. But maybe it helps someone else in the future. $\endgroup$
    – Tim B
    Commented Mar 9, 2020 at 12:43


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