PEEB: Part-based Image Classifiers with an Explainable and Editable Language Bottleneck (2024.findings-naacl)
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| Challenge: | CLIP-based classifiers rely on the prompt containing a class name that is known to the text encoder and perform poorly on new classes or the classes whose names rarely appear on the Internet. |
| Approach: | They propose to use a set of text descriptors to express a class name into a textual descriptable and match the embeddings of the detected parts to their textual ones to compute a logit score. |
| Outcome: | The proposed classifier outperforms CLIP-based classifiers on zero-shot and supervised learning settings by 88.80% and 92.20% accuracy on CUB-200 and Stanford Dogs-120. |
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TROPE: TRaining-Free Object-Part Enhancement for Seamlessly Improving Fine-Grained Zero-Shot Image Captioning (2024.findings-emnlp)
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| Challenge: | Existing approaches to enhance zero-shot abilities in image captioning fail with fine-grained datasets. |
| Approach: | They propose a method to enhance captions with additional object-part details using object detector proposals and natural language processing techniques. |
| Outcome: | The proposed method improves performance on fine-grained datasets and improves on existing methods. |
Delving into the Openness of CLIP (2023.findings-acl)
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| Challenge: | Contrastive Language-Image Pre-training (CLIP) allows for open-vocabulary visual recognition, where the model can recognize images from an open class set in a zero-shot manner. |
| Approach: | They propose to use image classification as an image-to-text matching task instead of discrete category IDs to achieve open-vocabulary visual recognition. |
| Outcome: | The proposed model can recognize images from an open vocabulary in a zero-shot manner, but its performance deteriorates as the vocabulary expands. |
VPL: Visual Proxy Learning Framework for Zero-Shot Medical Image Diagnosis (2024.findings-emnlp)
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| Challenge: | Insufficient medical text precision and the modal disparity between text and vision spaces pose challenges for vision-language models like CLIP. |
| Approach: | They propose a visual proxy learning framework that combines a text refinement module and a stable Sinkhorn algorithm to enhance the diagnostic performance. |
| Outcome: | The proposed model outperforms the state-of-the-art CLIP inference by 1.69% to 15.31% on five datasets covering various diseases. |
Zero-Shot Text Classification with Self-Training (2022.emnlp-main)
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| Challenge: | Recent advances in large pretrained language models have increased attention to zero-shot text classification. |
| Approach: | They propose a plug-and-play method to bridge this gap by requiring only class names along with an unlabeled dataset. |
| Outcome: | The proposed model can be trained on a natural language inference dataset and performs on dozens of unseen tasks without the need for domain expertise or trial and error. |
DirectProbe: Studying Representations without Classifiers (2021.naacl-main)
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| Challenge: | Existing approaches for probing opaque representations often use training classifiers and use the accuracy, mutual information, or complexity as a proxy for the representation’s goodness. |
| Approach: | They propose a heuristic that directly studies the geometry of a representation by building upon the notion of 'version space' they argue that doing so can be unreliable because different representations may need different classifiers . |
| Outcome: | Experiments with linguistic tasks and contextualized embeddings show that even without training classifiers, DirectProbe can shine lights on how an embeddable space represents labels and anticipate the classifier performance for the representation. |
Text2Model: Text-based Model Induction for Zero-shot Image Classification (2024.findings-emnlp)
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| Challenge: | Existing approaches to zero-shot learning are limited in two ways: Query-dependence and richness of language description. |
| Approach: | They propose a task-agnostic approach to image classification using only text descriptions . they train a hypernetwork that receives class descriptions and outputs a multi-class model . |
| Outcome: | The proposed approach generates non-linear classifiers, handles rich textual descriptions, and may be adapted to produce lightweight models efficient enough for on-device applications. |
Combining Unsupervised Pre-training and Annotator Rationales to Improve Low-shot Text Classification (D19-1)
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| Challenge: | supervised learning models perform poorly at low-shot tasks for which little labeled data is available for training. |
| Approach: | They propose to combine a bag-of-words embedding approach and a context-aware method to improve low-shot text classification. |
| Outcome: | The proposed method improves low-shot text classification with pre-training and rationales . the simple bag-of-words approach is the clear top performer when there are few training instances or less . |
SELP: A Semantically-Driven Approach for Separated and Accurate Class Prototypes in Few-Shot Text Classification (2024.findings-acl)
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| Challenge: | Existing methods for few-shot text classification focus on enhancing separation of prototypes without taking semantic relationships into account. |
| Approach: | They propose to utilize semantically enhanced labels to calibrate class Prototypes . they propose a center loss method to enhance intra-class compactness . |
| Outcome: | The proposed method outperforms baseline methods on eight few-shot text classification datasets. |
Leveraging Multiple Teachers for Test-Time Adaptation of Language-Guided Classifiers (2023.findings-emnlp)
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| Challenge: | Recent approaches focus on language-guided classifiers that can generalize in zero-shot settings, but their performance varies significantly between different language explanations in unpredictable ways. |
| Approach: | They propose a framework that uses data programming to adapt a language-guided classifier for a new task when provided with multiple teachers and unlabeled test examples. |
| Outcome: | The proposed framework outperforms a baseline from previous work by 9.3%. |
Getting More Juice Out of Your Data: Hard Pair Refinement Enhances Visual-Language Models Without Extra Data (2025.naacl-long)
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Haonan Wang, Minbin Huang, Runhui Huang, Lanqing Hong, Hang Xu, Tianyang Hu, Xiaodan Liang, Zhenguo Li, Hong Cheng, Kenji Kawaguchi
| Challenge: | Contrastive Language-Image Pre-training (CLIP) is a standard for cross-modal image-text representation learning. |
| Approach: | They propose a framework that enhances pre-trained CLIP models by exploiting challenging text-image pairs within existing datasets. |
| Outcome: | The proposed framework improves CLIP models by exploiting text-image pairs in training. |