# Should the TM predict the pattern perfectly accurately?

**URL:** <https://discourse.numenta.org/t/should-the-tm-predict-the-pattern-perfectly-accurately/7920>\
**Category:** Getting Started\
**Created:** [October 4, 2020, 4:59pm UTC](https://discourse.numenta.org/t/should-the-tm-predict-the-pattern-perfectly-accurately/7920 "2020-10-04T16:59:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bizunow13](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.numenta.org/bizunow13/32/5286_2.png) [@bizunow13](https://discourse.numenta.org/u/bizunow13)\
**Post date:** [October 4, 2020, 4:59pm UTC](https://discourse.numenta.org/t/should-the-tm-predict-the-pattern-perfectly-accurately/7920/1 "2020-10-04T16:59:33Z")

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Hello, simple qustion in topic title.

For example, its t-1 prediction:  
 ![image](https://canada1.discourse-cdn.com/flex030/uploads/numenta/original/2X/1/14988baa7f0e64b889373dcfed19302520909af7.png)

And t0 active columns state:  
 ![image](https://canada1.discourse-cdn.com/flex030/uploads/numenta/original/2X/3/3566c6120ad9ccd626002768de01ac3c36ca2c3d.png)

One column predicted wrong.  
Sometimes there may be 2-3 incorrectly predicted columns.  
Its valid, or not?

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<div class="post-metadata">

**Author:** ![sheiser1](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.numenta.org/sheiser1/32/766_2.png) [@sheiser1](https://discourse.numenta.org/u/sheiser1)\
**Post date:** [October 4, 2020, 7:12pm UTC](https://discourse.numenta.org/t/should-the-tm-predict-the-pattern-perfectly-accurately/7920/3 "2020-10-04T19:12:19Z")

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> [@bizunow13](#):
>
> One column predicted wrong.  
> Sometimes there may be 2-3 incorrectly predicted columns.  
> Its valid, or not?

The accuracy of TM predictions generally depends on how much ambiguity and noise exists in the sequences.

So this scenario is perfectly plausible, except in scenarios of noiseless simple patterns – which should have 0 unpredicted columns given enough repetitions.