I don’t think it’s useful to decide beforehand on which metric to use when doing exploratory research.
‘Cheshire Puss,’ she began, rather timidly, as she did not at all know
whether it would like the name: however, it only grinned a little wider.
‘Come, it’s pleased so far,’ thought Alice, and she went on. ‘Would you
tell me, please, which way I ought to go from here?’
‘That depends a good deal on where you want to get to,’ said the Cat.
‘I don’t much care where—’ said Alice.
‘Then it doesn’t matter which way you go,’ said the Cat.
‘—so long as I get SOMEWHERE,’ Alice added as an explanation.
‘Oh, you’re sure to do that,’ said the Cat, ‘if you only walk long
enough.’
You confuse metrics do decide where to look with metrics to decide whether you found something. Those two aren’t the same thing.
You decide where to look based on what you know in the present but you decide whether you found something based on information that you find in the future.
‘Cheshire Puss,’ she began, rather timidly, as she did not at all know whether it would like the name: however, it only grinned a little wider. ‘Come, it’s pleased so far,’ thought Alice, and she went on. ‘Would you tell me, please, which way I ought to go from here?’
‘That depends a good deal on where you want to get to,’ said the Cat.
‘I don’t much care where—’ said Alice.
‘Then it doesn’t matter which way you go,’ said the Cat.
‘—so long as I get SOMEWHERE,’ Alice added as an explanation.
‘Oh, you’re sure to do that,’ said the Cat, ‘if you only walk long enough.’
You confuse metrics do decide where to look with metrics to decide whether you found something. Those two aren’t the same thing.
You decide where to look based on what you know in the present but you decide whether you found something based on information that you find in the future.