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SuedeSwede
Ognoo
Gender: Female
Age: 26
Location: On a cloud
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- #1
- Posted: 05/17/2014 23:48
- Post subject: Similar charts
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Sorry if this has already been addressed, but the "similar charts" underneath my chart seems to always be inaccurate. For a good 3 months LosWochos' chart has been fourth on the list ahead of IrishMusichead's despite having 31 albums in common with LosWochos' chart and 42 with IrishMusichead's. When I press the magnifying glass next to my chart which shows a larger list, this doesn't differentiate, and several charts are placed incorrectly. In addition, charts like SilverWalrus' (42 albums) which have significantly higher common albums than other don't even appear on the list.
Why is it doing this?
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albummaster
Janitor
Gender: Male
Location: Spain
Site Admin
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- #2
- Posted: 05/18/2014 07:54
- Post subject:
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I've just investigated this and it's to do with the way similarity is determined. Underneath, points are awarded for both albums and artists in common. Two points are awarded for an album in common, and one point is awarded for an artist in common:
For your chart, it looks like this:
| Code: | ChartID Albums Artists Similarity
15207 66 67 199
14401 54 73 181
12322 49 69 167
4064 39 60 138
10543 43 50 136 |
Taking artists into account (as well as albums) helps to provide better matches.
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SuedeSwede
Ognoo
Gender: Female
Age: 26
Location: On a cloud
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- #3
- Posted: 05/19/2014 06:59
- Post subject:
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The thing is, that's not the current similarities. I have 31 albums/34 artists in common with chart 4064...
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albummaster
Janitor
Gender: Male
Location: Spain
Site Admin
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- #4
- Posted: 05/19/2014 07:54
- Post subject:
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Apologies, I'll check into. I think it's something to do with a suspect album being removed from the other chart and the similarity not being recalculated. The list should refresh again in the next few hours, so I'll keep an eye and make sure it is changed.
EDIT: Seems correct now. Apologies for the issue.
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SuedeSwede
Ognoo
Gender: Female
Age: 26
Location: On a cloud
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- #5
- Posted: 05/19/2014 18:01
- Post subject:
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Thank you
EDIT: Just wondering if this bug will replicate or not?
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albummaster
Janitor
Gender: Male
Location: Spain
Site Admin
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- #6
- Posted: 05/20/2014 07:27
- Post subject:
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| SuedeSwede wrote: | Thank you
EDIT: Just wondering if this bug will replicate or not? |
No, it's fixed now (won't happen again).
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BrandonMiaow
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- #7
- Posted: 05/21/2014 06:20
- Post subject:
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I'm kind of curious about this, because, for instance, Nutso's custom chart "Pink Floyd: Best to Worst" is in my similar charts list despite me only having one Pink Floyd album on my chart.
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albummaster
Janitor
Gender: Male
Location: Spain
Site Admin
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- #8
- Posted: 05/21/2014 06:56
- Post subject:
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Apologies, there may be incorrect values currently cached for some charts. The similarity will get recalculated when a chart is next updated.
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albummaster
Janitor
Gender: Male
Location: Spain
Site Admin
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- #9
- Posted: 05/26/2014 11:16
- Post subject:
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| BrandonMiaow wrote: | | I'm kind of curious about this, because, for instance, Nutso's custom chart "Pink Floyd: Best to Worst" is in my similar charts list despite me only having one Pink Floyd album on my chart. |
Apologies, on investigating further after seeing that the chart is still listed, I've found a bug where an artist in common is counted once for each album. I've just made a fix and & am re-calculating stats for the whole site (once this has finished, everything should be correct).
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BrandonMiaow
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- #10
- Posted: 05/26/2014 18:32
- Post subject:
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You don't have to apologize so much, albummaster, bugs happen, and you do super well in fixing them.  Thanks!
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