Merge pull request #114080 from diberry/diberry/0506-luis-public-issue-53837

[Cogsvcs] LUIS - public issue 53837 #2

Author: garycentric

articles/cognitive-services/LUIS/luis-concept-data-alteration.md

@@ -2,7 +2,7 @@
 title: Data alteration - LUIS
 description: Learn how data can be changed before predictions in Language Understanding (LUIS)
 ms.topic: conceptual
-ms.date: 05/05/2020
+ms.date: 05/06/2020
 ---
 
 # Alter utterance data before or during prediction
@@ -70,18 +70,15 @@ The Bing spell check API used in LUIS does not support a list of words to ignore
 ## Change time zone of prebuilt datetimeV2 entity
 When a LUIS app uses the prebuilt [datetimeV2](luis-reference-prebuilt-datetimev2.md) entity, a datetime value can be returned in the prediction response. The timezone of the request is used to determine the correct datetime to return. If the request is coming from a bot or another centralized application before getting to LUIS, correct the timezone LUIS uses.
 
-### Endpoint querystring parameter
-The timezone is corrected by adding the user's timezone to the endpoint using the appropriate parameter based on the API version. The value of the parameter should be the positive or negative number, in minutes, to alter the time.
+### V3 prediction API to alter timezone
 
-|API version|Querystring parameter|
-|--|--|
-|v2|`timezoneOffset`|
-|v3|`datetimeReference`|
+In V3, the `datetimeReference` determines the timezone offset. Learn more about [V3 predictions](luis-migration-api-v3.md#v3-post-body).
 
-### Daylight savings example
-If you need the returned prebuilt datetimeV2 to adjust for daylight savings time, you should use the querystring parameter with a +/- value in minutes for the [endpoint](https://go.microsoft.com/fwlink/?linkid=2092356) query.
+### V2 prediction API to alter timezone
+The timezone is corrected by adding the user's timezone to the endpoint using the `timezoneOffset` parameter based on the API version. The value of the parameter should be the positive or negative number, in minutes, to alter the time.
 
-#### [V2 prediction endpoint request](#tab/V2)
+#### V2 prediction daylight savings example
+If you need the returned prebuilt datetimeV2 to adjust for daylight savings time, you should use the querystring parameter with a +/- value in minutes for the [endpoint](https://go.microsoft.com/fwlink/?linkid=2092356) query.
 
 Add 60 minutes:
 
@@ -91,21 +88,7 @@ Remove 60 minutes:
 
 `https://{region}.api.cognitive.microsoft.com/luis/v2.0/apps/{appId}?q=Turn the lights on?timezoneOffset=-60&verbose={boolean}&spellCheck={boolean}&staging={boolean}&bing-spell-check-subscription-key={string}&log={boolean}`
 
-#### [V3 prediction endpoint request](#tab/V3)
-
-Add 60 minutes:
-
-`https://{region}.api.cognitive.microsoft.com/luis/v3.0-preview/apps/{appId}/slots/production/predict?query=Turn the lights on?datetimeReference=60&spellCheck={boolean}&bing-spell-check-subscription-key={string}&log={boolean}`
-
-Remove 60 minutes:
-
-`https://{region}.api.cognitive.microsoft.com/luis/v3.0-preview/apps/{appId}/slots/production/predict?query=Turn the lights on?datetimeReference=-60&spellCheck={boolean}&bing-spell-check-subscription-key={string}&log={boolean}`
-
-Learn more about the [V3 prediction endpoint](luis-migration-api-v3.md).
-
-* * *
-
-## C# code determines correct value of parameter
+#### V2 prediction C# code determines correct value of parameter
 
 The following C# code uses the [TimeZoneInfo](https://docs.microsoft.com/dotnet/api/system.timezoneinfo) class's [FindSystemTimeZoneById](https://docs.microsoft.com/dotnet/api/system.timezoneinfo.findsystemtimezonebyid#examples) method to determine the correct offset value based on system time: