Errors extending the annotation spans

[EgoLaparra]

The errors caught by Keith are produced by wrong or incomplete identifications. One is solved with #44, but the other one cannot be solved because we expand only to "O" characters:

      "timexes" : [ {
        "@type" : "TimeExpression",
        "@id" : "_:TimeExpression_13",
        "startOffset" : 3238,
        "endOffset" : 3247,
        "text" : "Oct. 2017",
        "intervals" : [ {
          "@type" : "TimeInterval",
          "@id" : "_:TimeInterval_8",
          "start" : "0017-10-02T00:00",
          "end" : "0017-10-03T00:00"
        } ]
      } ]

In this case, "2" is identified as Day-Of-Month and "017" as Year. This is why the resulting intervals is [0017-10-02T00:00, 0017-10-03T00:00).

[bethard]

I'm guessing this error is because we never saw Month+Year in the training data, always Month+Day+Year. If that's the case, the right fix for this is probably to generate more artificial training data to provide such examples.

I could imagine a bunch of heuristics to fix this (e.g., never let a year be only 3 digits), but they all seem hacky, and don't get to the root of the problem.