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Modelplace: AI Model Marketplace by OpenCV

modelplace.ai

21–30 of 39 posts

Re: Modelplace: AI Model Marketplace by OpenCV

#21
post #20

I don't think this will be a successful business model. Niche AI models cost a lot of money to gather the right dataset and train, but they would probably only sell to <100 companies/individuals. So pricing a model at $50-100 isn't profitable. If you're selling general CV models, you have to compete with the plethora of open source ones, including ones that Google and Facebook release for free, which are trained on h…

It looks like model-as-a-service. Cool feature, isn't it?

Re: Modelplace: AI Model Marketplace by OpenCV

#22
post #17

Earlier quoted context omitted.

The value of these could be in private datasets. Model architectures are not really patentable and ownership of a trained model has always been very muddy water. That being said, if I am selling a bird classifier chances are that to train it I had to combine multiple datasets and someone can't easily finetune it to get better results.

They dont need to fine tune it for better results, they only need to fine tune it to give different results and sell it for $5 less than you are.

I believe it has a kind of pre-moderation.

Re: Modelplace: AI Model Marketplace by OpenCV

#23
post #10
post #7

Earlier quoted context omitted.

The models have to be trained. Trained towards a given task.

And then once you have the weights you have to figure out what to do with them. Data science (training a good model) and engineering (deploying it as a service to be consumed by end users) are pretty distinct tasks.

Good point.

Re: Modelplace: AI Model Marketplace by OpenCV

#24

If this becomes something like huggingface for Computer Vision - awesome. For now, it's a shame model descriptions seem to often be lifted straight from README. Having a more standardized description, something like model cards [1] (CV example [2]) would be hugely beneficial IMO. [1] https://arxiv.org/pdf/1810.03993.pdf [2] https://drive.google.com/file/d/1f39lSzU5Oq-j_OXgS67KfN5wNso...

They looks quite similar. What did you find useful in this card and can't get from a model description?

Re: Modelplace: AI Model Marketplace by OpenCV

#25
post #9

Cool idea. I keep looking for a search/filter/facet function to leverage the tagging and classification they've done with the models, but I can't find one.

We also expored ways of presenting hundreds [1] of AI models in a better way. Recently we updated the model zoo so that it is arranged according to benchmark datasets [2] and papers [3]. Do you think it satisfies the needs?

[1] https://mmpose.readthedocs.io/en/latest/modelzoo.html [2] https://mmpose.readthedocs.io/en/latest/topics/body(2d,kpt,i... [3] https://mmpose.readthedocs.io/en/latest/papers/algorithms.ht...

Re: Modelplace: AI Model Marketplace by OpenCV

#26

How do you stop piracy on something like this? Surely I could take a model, refine it slightly to get distinct weights (ie. not a flat clone) and unload it as my own novel variant? ...and I mean, is the problem not utterly fundamental? When is a model “yours” or sell? When you trained it? When you’re not using transfer learning? When you wrote the paper? When you own the training data? When you can recreate it from s…

Right, you could steal the model by querying lots of images and using teacher-student model distillation.

Re: Modelplace: AI Model Marketplace by OpenCV

#27
post #20

I don't think this will be a successful business model. Niche AI models cost a lot of money to gather the right dataset and train, but they would probably only sell to <100 companies/individuals. So pricing a model at $50-100 isn't profitable. If you're selling general CV models, you have to compete with the plethora of open source ones, including ones that Google and Facebook release for free, which are trained on h…

I agree, it seems like fine-tuning the massive open source models is better than buying small niche models. Curating the dataset is also a non-trivial amount of work that has to be customised per client. However with further adoption of AI into new markets new clients may emerge.

Re: Modelplace: AI Model Marketplace by OpenCV

#29
I can see value in being able to casually integrate vision models into different applications.

I would urge everyone involved (OpenCV and people using the models) to not use this in any safety related application. The example given on the site is person detection for construction site safety. If you're going to use ML for something like this, hire someone with experience using it for such applications, that can understand the operating condition and failure modes. Your worksite is not safe if you just plugged in an online person detection model to a video feed.

Re: Modelplace: AI Model Marketplace by OpenCV

#30
post #17

Earlier quoted context omitted.

The value of these could be in private datasets. Model architectures are not really patentable and ownership of a trained model has always been very muddy water. That being said, if I am selling a bird classifier chances are that to train it I had to combine multiple datasets and someone can't easily finetune it to get better results.

They dont need to fine tune it for better results, they only need to fine tune it to give different results and sell it for $5 less than you are.

I misunderstood your point.

The "attack" that you are describing could probably be mitigated by doing activation analysis. Given random initialization even with fine-tuning the activation distribution will be similar. Same method should be used to weed out people just repackaging the ImageNet pretrained model from torchvision.

That being said you can still distill a network into another with a teacher-student approach and that would be undetectable.

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