# Two issues about parameters.json

**URL:** <https://community.drivendata.org/t/two-issues-about-parameters-json/6089>\
**Category:** Differential Privacy Temporal Map Challenge\
**Created:** [May 2, 2021, 5:03pm UTC](https://community.drivendata.org/t/two-issues-about-parameters-json/6089 "2021-05-02T17:03:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hecci](https://avatars.discourse-cdn.com/v4/letter/h/7c8e57/32.png) [@hecci](https://community.drivendata.org/u/hecci)\
**Post date:** [May 2, 2021, 5:03pm UTC](https://community.drivendata.org/t/two-issues-about-parameters-json/6089/1 "2021-05-02T17:03:18Z")

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In parameters.json, company\_id contains all integers from 0 to 100 while in ground\_truth.csv, company\_id only contains integers from 0 to 56. May I ask if it is a mistake or the test data may contain values larger than 56?

payment\_type contains all integers from -1 to 8 except 4. Does payment\_type of the test data contain 4? Thanks.

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**Author:** ![Christine\_Task](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Christine\_Task](https://community.drivendata.org/u/Christine_Task)\
**Post date:** [May 4, 2021, 8:34pm UTC](https://community.drivendata.org/t/two-issues-about-parameters-json/6089/2 "2021-05-04T20:34:56Z")

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So, it turns out that the rise of Uber and Lyft has been rough for the taxi industry. The number of cab companies (different values for company\_id) does vary noticeably between different data sets. The company\_id range is legitimately from 0-100 (and the note that the same company may be assigned a different code in different data sets).

However, payment\_type 4 does not appear to be used in any of the data sets. You’re welcome to omit that option.