<p>I believe this question should be closed:</p>

<p><a href="https://stats.stackexchange.com/questions/345656/test-accuracy-much-higher-than-training-accuracy">Test accuracy much higher than training accuracy</a></p>

<p>It's impossible to answer it without looking at the code, so the only reasonable suggestion I can give to the OP is to add code. However, once code is added, the question will become off-topic here and on-topic for Stack Overflow. Right now is not on-topic for SO, so I cannot propose it for migration. What reason for closure should I select?</p>

<p>PS I believe this case is quite different from a preceding, superficially similar question I already asked here</p>

<p><a href="https://stats.meta.stackexchange.com/questions/5243/how-to-improve-the-following-question">How to improve the following question</a></p>

<p>for the following reasons:</p>

<ul>
<li><p>as Nick Cox noted, the other question is so complicated that even on SO it will probably be off-topic (modeling &amp; coding issues are too intertwined). The current question, on the other hand, asks about a well-known, completely solved problem: handwritten digit classification from the MNIST data set.</p></li>
<li><p>the other user was a beginner at her/his first question, and the question was not bad for a first time. Here the user is not an expert for sure, but he's not at his first question either, and the question lacks a lot to be desired, so it should be closed IMO.</p></li>
</ul>
