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+ ---
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+ language: en
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+ tags:
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+ - exbert
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+ license: apache-2.0
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+ datasets:
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+ - bookcorpus
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+ - wikipedia
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+ ---
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+
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+ # BERT base model (uncased)
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+
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+ Pretrained model on English language using a masked language modeling (MLM) objective. It was introduced in
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+ [this paper](https://arxiv.org/abs/1810.04805) and first released in
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+ [this repository](https://github.com/google-research/bert). This model is uncased: it does not make a difference
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+ between english and English.
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+
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+ Disclaimer: The team releasing BERT did not write a model card for this model so this model card has been written by
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+ the Hugging Face team.
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+
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+ ## Model description
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+
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+ BERT is a transformers model pretrained on a large corpus of English data in a self-supervised fashion. This means it
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+ was pretrained on the raw texts only, with no humans labeling them in any way (which is why it can use lots of
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+ publicly available data) with an automatic process to generate inputs and labels from those texts. More precisely, it
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+ was pretrained with two objectives:
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+
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+ - Masked language modeling (MLM): taking a sentence, the model randomly masks 15% of the words in the input then run
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+ the entire masked sentence through the model and has to predict the masked words. This is different from traditional
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+ recurrent neural networks (RNNs) that usually see the words one after the other, or from autoregressive models like
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+ GPT which internally masks the future tokens. It allows the model to learn a bidirectional representation of the
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+ sentence.
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+ - Next sentence prediction (NSP): the models concatenates two masked sentences as inputs during pretraining. Sometimes
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+ they correspond to sentences that were next to each other in the original text, sometimes not. The model then has to
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+ predict if the two sentences were following each other or not.
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+
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+ This way, the model learns an inner representation of the English language that can then be used to extract features
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+ useful for downstream tasks: if you have a dataset of labeled sentences, for instance, you can train a standard
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+ classifier using the features produced by the BERT model as inputs.
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+
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+ ## Model variations
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+
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+ BERT has originally been released in base and large variations, for cased and uncased input text. The uncased models also strips out an accent markers.
44
+ Chinese and multilingual uncased and cased versions followed shortly after.
45
+ Modified preprocessing with whole word masking has replaced subpiece masking in a following work, with the release of two models.
46
+ Other 24 smaller models are released afterward.
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+
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+ The detailed release history can be found on the [google-research/bert readme](https://github.com/google-research/bert/blob/master/README.md) on github.
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+
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+ | Model | #params | Language |
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+ |------------------------|--------------------------------|-------|
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+ | [`bert-base-uncased`](https://huggingface.co/bert-base-uncased) | 110M | English |
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+ | [`bert-large-uncased`](https://huggingface.co/bert-large-uncased) | 340M | English | sub
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+ | [`bert-base-cased`](https://huggingface.co/bert-base-cased) | 110M | English |
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+ | [`bert-large-cased`](https://huggingface.co/bert-large-cased) | 340M | English |
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+ | [`bert-base-chinese`](https://huggingface.co/bert-base-chinese) | 110M | Chinese |
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+ | [`bert-base-multilingual-cased`](https://huggingface.co/bert-base-multilingual-cased) | 110M | Multiple |
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+ | [`bert-large-uncased-whole-word-masking`](https://huggingface.co/bert-large-uncased-whole-word-masking) | 340M | English |
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+ | [`bert-large-cased-whole-word-masking`](https://huggingface.co/bert-large-cased-whole-word-masking) | 340M | English |
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+
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+ ## Intended uses & limitations
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+
63
+ You can use the raw model for either masked language modeling or next sentence prediction, but it's mostly intended to
64
+ be fine-tuned on a downstream task. See the [model hub](https://huggingface.co/models?filter=bert) to look for
65
+ fine-tuned versions of a task that interests you.
66
+
67
+ Note that this model is primarily aimed at being fine-tuned on tasks that use the whole sentence (potentially masked)
68
+ to make decisions, such as sequence classification, token classification or question answering. For tasks such as text
69
+ generation you should look at model like GPT2.
70
+
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+ ### How to use
72
+
73
+ You can use this model directly with a pipeline for masked language modeling:
74
+
75
+ ```python
76
+ >>> from transformers import pipeline
77
+ >>> unmasker = pipeline('fill-mask', model='bert-base-uncased')
78
+ >>> unmasker("Hello I'm a [MASK] model.")
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+
80
+ [{'sequence': "[CLS] hello i'm a fashion model. [SEP]",
81
+ 'score': 0.1073106899857521,
82
+ 'token': 4827,
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+ 'token_str': 'fashion'},
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+ {'sequence': "[CLS] hello i'm a role model. [SEP]",
85
+ 'score': 0.08774490654468536,
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+ 'token': 2535,
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+ 'token_str': 'role'},
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+ {'sequence': "[CLS] hello i'm a new model. [SEP]",
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+ 'score': 0.05338378623127937,
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+ 'token': 2047,
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+ 'token_str': 'new'},
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+ {'sequence': "[CLS] hello i'm a super model. [SEP]",
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+ 'score': 0.04667217284440994,
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+ 'token': 3565,
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+ 'token_str': 'super'},
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+ {'sequence': "[CLS] hello i'm a fine model. [SEP]",
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+ 'score': 0.027095865458250046,
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+ 'token': 2986,
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+ 'token_str': 'fine'}]
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+ ```
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+
102
+ Here is how to use this model to get the features of a given text in PyTorch:
103
+
104
+ ```python
105
+ from transformers import BertTokenizer, BertModel
106
+ tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
107
+ model = BertModel.from_pretrained("bert-base-uncased")
108
+ text = "Replace me by any text you'd like."
109
+ encoded_input = tokenizer(text, return_tensors='pt')
110
+ output = model(**encoded_input)
111
+ ```
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+
113
+ and in TensorFlow:
114
+
115
+ ```python
116
+ from transformers import BertTokenizer, TFBertModel
117
+ tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
118
+ model = TFBertModel.from_pretrained("bert-base-uncased")
119
+ text = "Replace me by any text you'd like."
120
+ encoded_input = tokenizer(text, return_tensors='tf')
121
+ output = model(encoded_input)
122
+ ```
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+
124
+ ### Limitations and bias
125
+
126
+ Even if the training data used for this model could be characterized as fairly neutral, this model can have biased
127
+ predictions:
128
+
129
+ ```python
130
+ >>> from transformers import pipeline
131
+ >>> unmasker = pipeline('fill-mask', model='bert-base-uncased')
132
+ >>> unmasker("The man worked as a [MASK].")
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+
134
+ [{'sequence': '[CLS] the man worked as a carpenter. [SEP]',
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+ 'score': 0.09747550636529922,
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+ 'token': 10533,
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+ 'token_str': 'carpenter'},
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+ {'sequence': '[CLS] the man worked as a waiter. [SEP]',
139
+ 'score': 0.0523831807076931,
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+ 'token': 15610,
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+ 'token_str': 'waiter'},
142
+ {'sequence': '[CLS] the man worked as a barber. [SEP]',
143
+ 'score': 0.04962705448269844,
144
+ 'token': 13362,
145
+ 'token_str': 'barber'},
146
+ {'sequence': '[CLS] the man worked as a mechanic. [SEP]',
147
+ 'score': 0.03788609802722931,
148
+ 'token': 15893,
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+ 'token_str': 'mechanic'},
150
+ {'sequence': '[CLS] the man worked as a salesman. [SEP]',
151
+ 'score': 0.037680890411138535,
152
+ 'token': 18968,
153
+ 'token_str': 'salesman'}]
154
+
155
+ >>> unmasker("The woman worked as a [MASK].")
156
+
157
+ [{'sequence': '[CLS] the woman worked as a nurse. [SEP]',
158
+ 'score': 0.21981462836265564,
159
+ 'token': 6821,
160
+ 'token_str': 'nurse'},
161
+ {'sequence': '[CLS] the woman worked as a waitress. [SEP]',
162
+ 'score': 0.1597415804862976,
163
+ 'token': 13877,
164
+ 'token_str': 'waitress'},
165
+ {'sequence': '[CLS] the woman worked as a maid. [SEP]',
166
+ 'score': 0.1154729500412941,
167
+ 'token': 10850,
168
+ 'token_str': 'maid'},
169
+ {'sequence': '[CLS] the woman worked as a prostitute. [SEP]',
170
+ 'score': 0.037968918681144714,
171
+ 'token': 19215,
172
+ 'token_str': 'prostitute'},
173
+ {'sequence': '[CLS] the woman worked as a cook. [SEP]',
174
+ 'score': 0.03042375110089779,
175
+ 'token': 5660,
176
+ 'token_str': 'cook'}]
177
+ ```
178
+
179
+ This bias will also affect all fine-tuned versions of this model.
180
+
181
+ ## Training data
182
+
183
+ The BERT model was pretrained on [BookCorpus](https://yknzhu.wixsite.com/mbweb), a dataset consisting of 11,038
184
+ unpublished books and [English Wikipedia](https://en.wikipedia.org/wiki/English_Wikipedia) (excluding lists, tables and
185
+ headers).
186
+
187
+ ## Training procedure
188
+
189
+ ### Preprocessing
190
+
191
+ The texts are lowercased and tokenized using WordPiece and a vocabulary size of 30,000. The inputs of the model are
192
+ then of the form:
193
+
194
+ ```
195
+ [CLS] Sentence A [SEP] Sentence B [SEP]
196
+ ```
197
+
198
+ With probability 0.5, sentence A and sentence B correspond to two consecutive sentences in the original corpus, and in
199
+ the other cases, it's another random sentence in the corpus. Note that what is considered a sentence here is a
200
+ consecutive span of text usually longer than a single sentence. The only constrain is that the result with the two
201
+ "sentences" has a combined length of less than 512 tokens.
202
+
203
+ The details of the masking procedure for each sentence are the following:
204
+ - 15% of the tokens are masked.
205
+ - In 80% of the cases, the masked tokens are replaced by `[MASK]`.
206
+ - In 10% of the cases, the masked tokens are replaced by a random token (different) from the one they replace.
207
+ - In the 10% remaining cases, the masked tokens are left as is.
208
+
209
+ ### Pretraining
210
+
211
+ The model was trained on 4 cloud TPUs in Pod configuration (16 TPU chips total) for one million steps with a batch size
212
+ of 256. The sequence length was limited to 128 tokens for 90% of the steps and 512 for the remaining 10%. The optimizer
213
+ used is Adam with a learning rate of 1e-4, \\(\beta_{1} = 0.9\\) and \\(\beta_{2} = 0.999\\), a weight decay of 0.01,
214
+ learning rate warmup for 10,000 steps and linear decay of the learning rate after.
215
+
216
+ ## Evaluation results
217
+
218
+ When fine-tuned on downstream tasks, this model achieves the following results:
219
+
220
+ Glue test results:
221
+
222
+ | Task | MNLI-(m/mm) | QQP | QNLI | SST-2 | CoLA | STS-B | MRPC | RTE | Average |
223
+ |:----:|:-----------:|:----:|:----:|:-----:|:----:|:-----:|:----:|:----:|:-------:|
224
+ | | 84.6/83.4 | 71.2 | 90.5 | 93.5 | 52.1 | 85.8 | 88.9 | 66.4 | 79.6 |
225
+
226
+
227
+ ### BibTeX entry and citation info
228
+
229
+ ```bibtex
230
+ @article{DBLP:journals/corr/abs-1810-04805,
231
+ author = {Jacob Devlin and
232
+ Ming{-}Wei Chang and
233
+ Kenton Lee and
234
+ Kristina Toutanova},
235
+ title = {{BERT:} Pre-training of Deep Bidirectional Transformers for Language
236
+ Understanding},
237
+ journal = {CoRR},
238
+ volume = {abs/1810.04805},
239
+ year = {2018},
240
+ url = {http://arxiv.org/abs/1810.04805},
241
+ archivePrefix = {arXiv},
242
+ eprint = {1810.04805},
243
+ timestamp = {Tue, 30 Oct 2018 20:39:56 +0100},
244
+ biburl = {https://dblp.org/rec/journals/corr/abs-1810-04805.bib},
245
+ bibsource = {dblp computer science bibliography, https://dblp.org}
246
+ }
247
+ ```
248
+
249
+ <a href="https://huggingface.co/exbert/?model=bert-base-uncased">
250
+ <img width="300px" src="https://cdn-media.huggingface.co/exbert/button.png">
251
+ </a>
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+ ---
2
+ tags:
3
+ - vision
4
+ widget:
5
+ - src: https://huggingface.co/datasets/mishig/sample_images/resolve/main/cat-dog-music.png
6
+ candidate_labels: playing music, playing sports
7
+ example_title: Cat & Dog
8
+ ---
9
+ # Model Card: CLIP
10
+ Disclaimer: The model card is taken and modified from the official CLIP repository, it can be found [here](https://github.com/openai/CLIP/blob/main/model-card.md).
11
+
12
+
13
+ ## Model Details
14
+ The CLIP model was developed by researchers at OpenAI to learn about what contributes to robustness in computer vision tasks. The model was also developed to test the ability of models to generalize to arbitrary image classification tasks in a zero-shot manner. It was not developed for general model deployment - to deploy models like CLIP, researchers will first need to carefully study their capabilities in relation to the specific context they’re being deployed within.
15
+
16
+
17
+ ### Model Date
18
+ January 2021
19
+
20
+
21
+ ### Model Type
22
+ The base model uses a ViT-B/16 Transformer architecture as an image encoder and uses a masked self-attention Transformer as a text encoder. These encoders are trained to maximize the similarity of (image, text) pairs via a contrastive loss.
23
+
24
+ The original implementation had two variants: one using a ResNet image encoder and the other using a Vision Transformer. This repository has the variant with the Vision Transformer.
25
+
26
+
27
+ ### Documents
28
+ - [Blog Post](https://openai.com/blog/clip/)
29
+ - [CLIP Paper](https://arxiv.org/abs/2103.00020)
30
+
31
+
32
+ ### Use with Transformers
33
+ ```python3
34
+ from PIL import Image
35
+ import requests
36
+ from transformers import CLIPProcessor, CLIPModel
37
+ model = CLIPModel.from_pretrained("openai/clip-vit-base-patch16")
38
+ processor = CLIPProcessor.from_pretrained("openai/clip-vit-base-patch16")
39
+ url = "http://images.cocodataset.org/val2017/000000039769.jpg"
40
+ image = Image.open(requests.get(url, stream=True).raw)
41
+ inputs = processor(text=["a photo of a cat", "a photo of a dog"], images=image, return_tensors="pt", padding=True)
42
+ outputs = model(**inputs)
43
+ logits_per_image = outputs.logits_per_image # this is the image-text similarity score
44
+ probs = logits_per_image.softmax(dim=1) # we can take the softmax to get the label probabilities
45
+ ```
46
+
47
+
48
+ ## Model Use
49
+
50
+ ### Intended Use
51
+ The model is intended as a research output for research communities. We hope that this model will enable researchers to better understand and explore zero-shot, arbitrary image classification. We also hope it can be used for interdisciplinary studies of the potential impact of such models - the CLIP paper includes a discussion of potential downstream impacts to provide an example for this sort of analysis.
52
+
53
+
54
+ #### Primary intended uses
55
+ The primary intended users of these models are AI researchers.
56
+ We primarily imagine the model will be used by researchers to better understand robustness, generalization, and other capabilities, biases, and constraints of computer vision models.
57
+
58
+
59
+ ### Out-of-Scope Use Cases
60
+ **Any** deployed use case of the model - whether commercial or not - is currently out of scope. Non-deployed use cases such as image search in a constrained environment, are also not recommended unless there is thorough in-domain testing of the model with a specific, fixed class taxonomy. This is because our safety assessment demonstrated a high need for task specific testing especially given the variability of CLIP’s performance with different class taxonomies. This makes untested and unconstrained deployment of the model in any use case currently potentially harmful.
61
+ Certain use cases which would fall under the domain of surveillance and facial recognition are always out-of-scope regardless of performance of the model. This is because the use of artificial intelligence for tasks such as these can be premature currently given the lack of testing norms and checks to ensure its fair use.
62
+ Since the model has not been purposefully trained in or evaluated on any languages other than English, its use should be limited to English language use cases.
63
+
64
+
65
+ ## Data
66
+ The model was trained on publicly available image-caption data. This was done through a combination of crawling a handful of websites and using commonly-used pre-existing image datasets such as [YFCC100M](http://projects.dfki.uni-kl.de/yfcc100m/). A large portion of the data comes from our crawling of the internet. This means that the data is more representative of people and societies most connected to the internet which tend to skew towards more developed nations, and younger, male users.
67
+
68
+
69
+ ### Data Mission Statement
70
+ Our goal with building this dataset was to test out robustness and generalizability in computer vision tasks. As a result, the focus was on gathering large quantities of data from different publicly-available internet data sources. The data was gathered in a mostly non-interventionist manner. However, we only crawled websites that had policies against excessively violent and adult images and allowed us to filter out such content. We do not intend for this dataset to be used as the basis for any commercial or deployed model and will not be releasing the dataset.
71
+
72
+
73
+ ## Performance and Limitations
74
+
75
+
76
+ ### Performance
77
+ We have evaluated the performance of CLIP on a wide range of benchmarks across a variety of computer vision datasets such as OCR to texture recognition to fine-grained classification. The paper describes model performance on the following datasets:
78
+ - Food101
79
+ - CIFAR10
80
+ - CIFAR100
81
+ - Birdsnap
82
+ - SUN397
83
+ - Stanford Cars
84
+ - FGVC Aircraft
85
+ - VOC2007
86
+ - DTD
87
+ - Oxford-IIIT Pet dataset
88
+ - Caltech101
89
+ - Flowers102
90
+ - MNIST
91
+ - SVHN
92
+ - IIIT5K
93
+ - Hateful Memes
94
+ - SST-2
95
+ - UCF101
96
+ - Kinetics700
97
+ - Country211
98
+ - CLEVR Counting
99
+ - KITTI Distance
100
+ - STL-10
101
+ - RareAct
102
+ - Flickr30
103
+ - MSCOCO
104
+ - ImageNet
105
+ - ImageNet-A
106
+ - ImageNet-R
107
+ - ImageNet Sketch
108
+ - ObjectNet (ImageNet Overlap)
109
+ - Youtube-BB
110
+ - ImageNet-Vid
111
+
112
+
113
+ ## Limitations
114
+ CLIP and our analysis of it have a number of limitations. CLIP currently struggles with respect to certain tasks such as fine grained classification and counting objects. CLIP also poses issues with regards to fairness and bias which we discuss in the paper and briefly in the next section. Additionally, our approach to testing CLIP also has an important limitation- in many cases we have used linear probes to evaluate the performance of CLIP and there is evidence suggesting that linear probes can underestimate model performance.
115
+
116
+
117
+ ### Bias and Fairness
118
+ We find that the performance of CLIP - and the specific biases it exhibits - can depend significantly on class design and the choices one makes for categories to include and exclude. We tested the risk of certain kinds of denigration with CLIP by classifying images of people from [Fairface](https://arxiv.org/abs/1908.04913) into crime-related and non-human animal categories. We found significant disparities with respect to race and gender. Additionally, we found that these disparities could shift based on how the classes were constructed. (Details captured in the Broader Impacts Section in the paper).
119
+ We also tested the performance of CLIP on gender, race and age classification using the Fairface dataset (We default to using race categories as they are constructed in the Fairface dataset.) in order to assess quality of performance across different demographics. We found accuracy >96% across all races for gender classification with ‘Middle Eastern’ having the highest accuracy (98.4%) and ‘White’ having the lowest (96.5%). Additionally, CLIP averaged ~93% for racial classification and ~63% for age classification. Our use of evaluations to test for gender, race and age classification as well as denigration harms is simply to evaluate performance of the model across people and surface potential risks and not to demonstrate an endorsement/enthusiasm for such tasks.
120
+
121
+
122
+ ## Feedback
123
+
124
+
125
+ ### Where to send questions or comments about the model
126
+ Please use [this Google Form](https://forms.gle/Uv7afRH5dvY34ZEs9)
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1
+ ---
2
+ tags:
3
+ - vision
4
+ widget:
5
+ - src: https://huggingface.co/datasets/mishig/sample_images/resolve/main/cat-dog-music.png
6
+ candidate_labels: playing music, playing sports
7
+ example_title: Cat & Dog
8
+ ---
9
+
10
+ # Model Card: CLIP
11
+
12
+ Disclaimer: The model card is taken and modified from the official CLIP repository, it can be found [here](https://github.com/openai/CLIP/blob/main/model-card.md).
13
+
14
+ ## Model Details
15
+
16
+ The CLIP model was developed by researchers at OpenAI to learn about what contributes to robustness in computer vision tasks. The model was also developed to test the ability of models to generalize to arbitrary image classification tasks in a zero-shot manner. It was not developed for general model deployment - to deploy models like CLIP, researchers will first need to carefully study their capabilities in relation to the specific context they’re being deployed within.
17
+
18
+ ### Model Date
19
+
20
+ January 2021
21
+
22
+ ### Model Type
23
+
24
+ The base model uses a ViT-L/14 Transformer architecture as an image encoder and uses a masked self-attention Transformer as a text encoder. These encoders are trained to maximize the similarity of (image, text) pairs via a contrastive loss.
25
+
26
+ The original implementation had two variants: one using a ResNet image encoder and the other using a Vision Transformer. This repository has the variant with the Vision Transformer.
27
+
28
+
29
+ ### Documents
30
+
31
+ - [Blog Post](https://openai.com/blog/clip/)
32
+ - [CLIP Paper](https://arxiv.org/abs/2103.00020)
33
+
34
+
35
+ ### Use with Transformers
36
+
37
+ ```python
38
+ from PIL import Image
39
+ import requests
40
+
41
+ from transformers import CLIPProcessor, CLIPModel
42
+
43
+ model = CLIPModel.from_pretrained("openai/clip-vit-large-patch14")
44
+ processor = CLIPProcessor.from_pretrained("openai/clip-vit-large-patch14")
45
+
46
+ url = "http://images.cocodataset.org/val2017/000000039769.jpg"
47
+ image = Image.open(requests.get(url, stream=True).raw)
48
+
49
+ inputs = processor(text=["a photo of a cat", "a photo of a dog"], images=image, return_tensors="pt", padding=True)
50
+
51
+ outputs = model(**inputs)
52
+ logits_per_image = outputs.logits_per_image # this is the image-text similarity score
53
+ probs = logits_per_image.softmax(dim=1) # we can take the softmax to get the label probabilities
54
+ ```
55
+
56
+
57
+ ## Model Use
58
+
59
+ ### Intended Use
60
+
61
+ The model is intended as a research output for research communities. We hope that this model will enable researchers to better understand and explore zero-shot, arbitrary image classification. We also hope it can be used for interdisciplinary studies of the potential impact of such models - the CLIP paper includes a discussion of potential downstream impacts to provide an example for this sort of analysis.
62
+
63
+ #### Primary intended uses
64
+
65
+ The primary intended users of these models are AI researchers.
66
+
67
+ We primarily imagine the model will be used by researchers to better understand robustness, generalization, and other capabilities, biases, and constraints of computer vision models.
68
+
69
+ ### Out-of-Scope Use Cases
70
+
71
+ **Any** deployed use case of the model - whether commercial or not - is currently out of scope. Non-deployed use cases such as image search in a constrained environment, are also not recommended unless there is thorough in-domain testing of the model with a specific, fixed class taxonomy. This is because our safety assessment demonstrated a high need for task specific testing especially given the variability of CLIP’s performance with different class taxonomies. This makes untested and unconstrained deployment of the model in any use case currently potentially harmful.
72
+
73
+ Certain use cases which would fall under the domain of surveillance and facial recognition are always out-of-scope regardless of performance of the model. This is because the use of artificial intelligence for tasks such as these can be premature currently given the lack of testing norms and checks to ensure its fair use.
74
+
75
+ Since the model has not been purposefully trained in or evaluated on any languages other than English, its use should be limited to English language use cases.
76
+
77
+
78
+
79
+ ## Data
80
+
81
+ The model was trained on publicly available image-caption data. This was done through a combination of crawling a handful of websites and using commonly-used pre-existing image datasets such as [YFCC100M](http://projects.dfki.uni-kl.de/yfcc100m/). A large portion of the data comes from our crawling of the internet. This means that the data is more representative of people and societies most connected to the internet which tend to skew towards more developed nations, and younger, male users.
82
+
83
+ ### Data Mission Statement
84
+
85
+ Our goal with building this dataset was to test out robustness and generalizability in computer vision tasks. As a result, the focus was on gathering large quantities of data from different publicly-available internet data sources. The data was gathered in a mostly non-interventionist manner. However, we only crawled websites that had policies against excessively violent and adult images and allowed us to filter out such content. We do not intend for this dataset to be used as the basis for any commercial or deployed model and will not be releasing the dataset.
86
+
87
+
88
+
89
+ ## Performance and Limitations
90
+
91
+ ### Performance
92
+
93
+ We have evaluated the performance of CLIP on a wide range of benchmarks across a variety of computer vision datasets such as OCR to texture recognition to fine-grained classification. The paper describes model performance on the following datasets:
94
+
95
+ - Food101
96
+ - CIFAR10
97
+ - CIFAR100
98
+ - Birdsnap
99
+ - SUN397
100
+ - Stanford Cars
101
+ - FGVC Aircraft
102
+ - VOC2007
103
+ - DTD
104
+ - Oxford-IIIT Pet dataset
105
+ - Caltech101
106
+ - Flowers102
107
+ - MNIST
108
+ - SVHN
109
+ - IIIT5K
110
+ - Hateful Memes
111
+ - SST-2
112
+ - UCF101
113
+ - Kinetics700
114
+ - Country211
115
+ - CLEVR Counting
116
+ - KITTI Distance
117
+ - STL-10
118
+ - RareAct
119
+ - Flickr30
120
+ - MSCOCO
121
+ - ImageNet
122
+ - ImageNet-A
123
+ - ImageNet-R
124
+ - ImageNet Sketch
125
+ - ObjectNet (ImageNet Overlap)
126
+ - Youtube-BB
127
+ - ImageNet-Vid
128
+
129
+ ## Limitations
130
+
131
+ CLIP and our analysis of it have a number of limitations. CLIP currently struggles with respect to certain tasks such as fine grained classification and counting objects. CLIP also poses issues with regards to fairness and bias which we discuss in the paper and briefly in the next section. Additionally, our approach to testing CLIP also has an important limitation- in many cases we have used linear probes to evaluate the performance of CLIP and there is evidence suggesting that linear probes can underestimate model performance.
132
+
133
+ ### Bias and Fairness
134
+
135
+ We find that the performance of CLIP - and the specific biases it exhibits - can depend significantly on class design and the choices one makes for categories to include and exclude. We tested the risk of certain kinds of denigration with CLIP by classifying images of people from [Fairface](https://arxiv.org/abs/1908.04913) into crime-related and non-human animal categories. We found significant disparities with respect to race and gender. Additionally, we found that these disparities could shift based on how the classes were constructed. (Details captured in the Broader Impacts Section in the paper).
136
+
137
+ We also tested the performance of CLIP on gender, race and age classification using the Fairface dataset (We default to using race categories as they are constructed in the Fairface dataset.) in order to assess quality of performance across different demographics. We found accuracy >96% across all races for gender classification with ‘Middle Eastern’ having the highest accuracy (98.4%) and ‘White’ having the lowest (96.5%). Additionally, CLIP averaged ~93% for racial classification and ~63% for age classification. Our use of evaluations to test for gender, race and age classification as well as denigration harms is simply to evaluate performance of the model across people and surface potential risks and not to demonstrate an endorsement/enthusiasm for such tasks.
138
+
139
+
140
+
141
+ ## Feedback
142
+
143
+ ### Where to send questions or comments about the model
144
+
145
+ Please use [this Google Form](https://forms.gle/Uv7afRH5dvY34ZEs9)
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+
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+ # 保存目录
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+ local_dir = "./clip-vit-large-patch14"
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+ os.makedirs(local_dir, exist_ok=True)
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+ # 设置镜像源
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+ # 国内可用 Hugging Face 镜像: https://huggingface.co 通过代理或镜像
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