Improved accuracy of estimated employee counts for publicly-traded, US companies

We recently improved the accuracy of the estimate populating the 'nbEmployees' attribute for publicly-traded US organizations in the Knowledge Graph by expanding analysis of data from sec.gov reports. 70%+ of the SEC-10k documents now include nbEmployees for each reporting period.

We also added 'secForms' as an attribute of Organizations. Below is a JSON excerpt from IBM featuring a filing from 2019:

"secForms": [
  {
    "formType": "8-K/A",
    "periodOfReport": {
      "str": "d2019-06-30",
      "precision": 3,
      "timestamp": 1561852800000
    },
    "filingDate": {
      "str": "d2019-09-20",
      "precision": 3,
      "timestamp": 1568937600000
    },
    "documentUrl": "https://www.sec.gov/ix?doc=/Archives/edgar/data/51143/000155837019008675/ibm-20190709x8ka.htm",
    "filingUrl": "https://www.sec.gov/Archives/edgar/data/51143/000155837019008675/0001558370-19-008675-index.htm"
  },
  {
    "formType": "10-Q",
    "periodOfReport": {
      "str": "d2019-06-30",
      "precision": 3,
      "timestamp": 1561852800000
    },
    "filingDate": {
      "str": "d2019-07-30",
      "precision": 3,
      "timestamp": 1564444800000
    },
    "documentUrl": "https://www.sec.gov/ix?doc=/Archives/edgar/data/51143/000155837019006560/ibm-20190630x10q.htm",
    "filingUrl": "https://www.sec.gov/Archives/edgar/data/51143/000155837019006560/0001558370-19-006560-index.htm"
  },
  ...
]