Flagger Content Author Content Reason Flag Created Resolved by Resolution
bouteloua bush rice grass (Microlaena avenacea)

overconfident computer vision suggestion

Oct. 24, 2019 17:28:53 +0000 bouteloua

most IDs corrected; now in maintenance mode -- please subscribe to the taxon to help

Comments

@lloyd_esler @johnvandenhoeven @mark_smale @tsn @ddennism

Can you help out with reidentifying these, even if it's just to "Poaceae" or "Plantae? The computer vision/automated image recognition feature seems to suggest Microlaena avenacea for any number of grasses, sedges, and other monocots.

Posted by bouteloua over 4 years ago

I'm happy that all 14 are Microlaena avenacea

Posted by lloyd_esler over 4 years ago

Are you looking at the link above though? There are around 200 misidentified observations, some of which aren't even grasses

Posted by bouteloua over 4 years ago

Ah. 172 identifications of Microlaena avenacea. I've had a look through and can't find any odd ones

Posted by lloyd_esler over 4 years ago

I too have looked through, and they all look like grasses or sedges to me. I don't know grasses or sedges well enough to say that these are not Microlaena avenacea. Many of them appear to be cultivated, and it seems plausible that a grass from NZ could appear in cultivation in many other parts of the world. I will leave it to those who are experts on grasses and sedges to sort these out.

Posted by tsn over 4 years ago

Yes I see now. A lot of the non-NZ ones aren't correct but I'm not well up enough with non-NZ plants to be much help

Posted by lloyd_esler over 4 years ago

Yes, but even backing up to "grass" or reidentifying as broad as "Cyperaceae" or "monocots" is supremely helpful if you can.

Posted by bouteloua over 4 years ago

For your amusement, if one searches Google Images for "Bush Rice Grass" (in an attempt to familiarize oneself with what this species really looks like), some of the results show a former President and a former Secretary of State walking together across a lawn... :-)

Posted by tsn over 4 years ago

I have gone through the set more carefully now, and have moved all that I could up to a higher level ID. Within the US, quite a few turned out to be Hemerocallis or Narcissus or Iris or Liriope or Yucca. A couple of them didn't move, despite my ID, presumably because the observer retained control of the ID. I hope that the algorithm can now be re-trained, to reduce future mistakes.

Posted by tsn over 4 years ago

haha I see the one photo of Bush & Rice

wow, thanks for all your work correcting these! I'm going to subscribe to the taxon to help keep an eye on it

Posted by bouteloua over 4 years ago

just fixed another dozen, thankfully slowing down due to the updates to computer vision suggestions

Posted by bouteloua over 2 years ago

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