Group-wise Prompting for Synthetic Tabular Data Generation using Large Language Models

Generating realistic synthetic tabular data presents a critical challenge in machine learning. This study introduces a simple yet effective method employing Large Language Models (LLMs) tailored to generate synthetic data, specifically addressing data imbalance problems. We propose a novel group-wise prompting method in CSV-style formatting that leverages the in-context learning capabilities of LLMs to produce data that closely adheres to the specified requirements and characteristics of the target dataset. Moreover, our proposed random word replacement strategy significantly improves the handling of monotonous categorical values, enhancing the accuracy and representativeness of the synthetic data. The effectiveness of our method is extensively validated across eight real-world public datasets, achieving state-of-the-art performance in downstream classification and regression tasks while maintaining inter-feature correlations and improving token efficiency over existing approaches. This advancement significantly contributes to addressing the key challenges of machine learning applications, particularly in the context of tabular data generation and handling class imbalance. The source code for our work is available at: https://github.com/seharanul17/synthetic-tabular-LLM

Improving Audio-Language Learning with MixGen and Multi-Level Test-Time Augmentation

In this paper, we propose two novel augmentation methods 1) audio-language MixGen (AL-MixGen) and 2) multi-level test-time augmentation (Multi-TTA) for audio-language learning. Inspired by MixGen, which is originally applied to vision-language learning, we introduce an augmentation method for the audio-language domain. We also explore the impact of test-time augmentations and present Multi-TTA which generalizes test-time augmentation over multiple layers of a deep learning model. Incorporating AL-MixGen and Multi-TTA into the baseline achieves 47.5 SPIDEr on audio captioning, which is an +18.2% over the baseline and outperforms the state-of-the-art approach with a 5x smaller model. In audio-text retrieval, the proposed methods surpass the baseline performance as well.

Morphology-Aware Interactive Keypoint Estimation

Diagnosis based on medical images, such as X-ray images, often involves manual annotation of anatomical keypoints. However, this process involves significant human efforts and can thus be a bottleneck in the diagnostic process. To fully automate this procedure, deep-learning-based methods have been widely proposed and have achieved high performance in detecting keypoints in medical images. However, these methods still have clinical limitations: accuracy cannot be guaranteed for all cases, and it is necessary for doctors to double-check all predictions of models. In response, we propose a novel deep neural network that, given an X-ray image, automatically detects and refines the anatomical keypoints through a user-interactive system in which doctors can fix mispredicted keypoints with fewer clicks than needed during manual revision. Using our own collected data and the publicly available AASCE dataset, we demonstrate the effectiveness of the proposed method in reducing the annotation costs via extensive quantitative and qualitative results. A demo video of our approach is available on our project webpage.