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Lulu Wang

6 accepted papers

2025

Addressing Cold-Start Problem in Click-Through Rate Prediction via Supervised Diffusion Modeling

AAAI 2025technical

Predicting Click-Through Rates is a crucial function within recommendation and advertising platforms, as the output of CTR prediction determines the order of items shown to users. The Embedding and MLP paradigm has become a standard approach for industrial recommendation systems and has been widely…

2025

SGDPO: Self-Guided Direct Preference Optimization for Language Model Alignment

ACL 2025finding

Direct Preference Optimization (DPO) is broadly utilized for aligning Large Language Models (LLMs) with human values because of its flexibility. Despite its effectiveness, it has been observed that the capability of DPO to generate human-preferred response is limited and the results of DPO are far f…

2024

PSC: Extending Context Window of Large Language Models via Phase Shift Calibration

EMNLP 2024main

Rotary Position Embedding (RoPE) is an efficient position encoding approach and is widely utilized in numerous large language models (LLMs). Recently, a lot of methods have been put forward to further expand the context window based on RoPE. The core concept of those methods is to predefine or searc…

2022

3d Cross-Scale Feature Transformer Network for Brain Mr Image Super-Resolution

ICASSP 2022accepted

High-resolution (HR) magnetic resonance (MR) images could provide reliable visual information for clinical diagnosis. Recently, super-resolution (SR) methods based on convolutional neural networks (CNNs) have shown great potential in obtaining HR MR images. However, most existing CNN-based SR method…

Cited by 0SourceScholar
2021

Gating Feature Dense Network for Single Anisotropic Mr Image Super-Resolution

ICASSP 2021accepted

High resolution (HR) magnetic resonance (MR) images are crucial for medical diagnosis. However, in practice, low resolution MR images are often acquired due to hardware limitation. In this work, we propose a gating feature dense network to reconstruct HR MR images from low resolution acquisitions, w…

Cited by 0SourceScholar
2020

A Model-Based Deep Network for MRI Reconstruction Using Approximate Message Passing Algorithm

ICASSP 2020accepted

We propose a novel model-based network to reconstruct the magnetic resonance (MR) image. In this network, the Approximate Message Passing (AMP) algorithm is unrolled to solve the optimization problem of compressed sensing MR imaging, and several CNN blocks is embedded as de-aliasing steps. We relax…

Cited by 0SourceScholar