I am writing a scientific article and the title reads something like:

Dimensionality reduction algorithms : tackling complex organization of datasets

I had a doubt question, should I say "tackling the" or is it grammatically correct to leave it out?

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    I haven't come across a recommendation to leave a gap before a colon in running script. // 'Grammaticality' only really fully applies to sentence structure. Adding a 'the' here is probably incongruous (almost a little unprofessional). But I'd be tempted to add one on odd days during the month, as I feel the cadence is then superior. Neither is wrong. Grammaticality isn't the issue: style is. – Edwin Ashworth Oct 30 '19 at 12:35
  • thanks for the humorous answer :) – jo37 Oct 30 '19 at 12:44
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    Article titles are not usually full sentences, so the rules of sentence grammar don't necessarily apply, and articles are often omitted. – Barmar Oct 31 '19 at 2:39
  • Quite aside from the presence of absence of "the", I think the subtitle is very confusingly worded, to the point that even though I already know what dimensionality reduction is, I don't quite understand what the subtitle is trying to say. – ruakh Nov 29 '19 at 16:22

'the' is not required because no emphasis is intended here;also, no need of a space before colon.

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