# Relation between rounds eras and validation set eras

**URL:** <https://forum.numer.ai/t/relation-between-rounds-eras-and-validation-set-eras/6154>\
**Category:** Tournament\
**Created:** [February 20, 2023, 7:21pm UTC](https://forum.numer.ai/t/relation-between-rounds-eras-and-validation-set-eras/6154 "2023-02-20T19:21:13Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![eleven\_sigma](https://avatars.discourse-cdn.com/v4/letter/e/8797f3/32.png) [@eleven\_sigma](https://forum.numer.ai/u/eleven_sigma)\
**Post date:** [February 20, 2023, 7:21pm UTC](https://forum.numer.ai/t/relation-between-rounds-eras-and-validation-set-eras/6154/1 "2023-02-20T19:21:13Z")

</div>

In last validation file there are five eras (1046 - 1050) without targets.  
Respect previous validation file, targets of era 1045 have been added.  
Which round correspond to 1045 era? 399 (the last resolved)? or there is a delay of a week before target data are added to validation set?  
What confund me is there are five (not four) eras in validation set without target.

---

<div class="post-metadata">

**Author:** ![wigglemuse](https://yyz1.discourse-cdn.com/flex009/user_avatar/forum.numer.ai/wigglemuse/32/3094_2.png) [@wigglemuse](https://forum.numer.ai/u/wigglemuse)\
**Post date:** [February 20, 2023, 7:34pm UTC](https://forum.numer.ai/t/relation-between-rounds-eras-and-validation-set-eras/6154/2 "2023-02-20T19:34:54Z")

</div>

see here

> [@Numerai rounds to era](http://forum.numer.ai/t/numerai-rounds-to-era/5891):
>
> Hi, is there a mapping from the numerai rounds, like 339 resolved last week, to training/validation data eras? Round 1033 seems to be the latest era with main target not NaN. So I assume that round corresponds to 339? Rounds 1034 to 1038 inclusive all have NaN for the main target, so I presume they correspond to Numerai Rounds 344, 349, 354, 359, 364? Thanks.