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CAREER: New Frontiers in Graph Generation

职业：图生成的新领域

基本信息

批准号：
2239869
负责人：
Liping Liu
金额：
$ 55.64万
依托单位：
Tufts University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2023
资助国家：
美国
起止时间：
2023-04-01 至 2028-03-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2239869&HistoricalAwards=false
关键词：
CAREER New Frontiers Graph Generation

项目摘要

A graph is a model of many different types of connections, relationships, or networks between different entities. It can be used to represent micro-level objects, like molecules being recorded as bonds connecting atoms, and macro-level networks, like social networks consisting of connections between users. Graph structures often contain rich information and are large in scale. An important task is to synthesize new graphs that are similar to but different from existing ones. For example, a drug design task may require a model to generate new molecule graphs for screening; and a data-sharing task for a social network may need a model to synthesize and share a graph similar to the original network, without releasing sensitive link information. This project combines neural networks and probabilistic methods to develop tools for generating new graphs for a wide range of tasks. These tools also have a solid statistical foundation and help to deepen the understanding of graph data.This project will advocate a new direction of developing graph generative models based on discrete sequential processes—the generative model starts from a random or trivial graph and tailors it in multiple steps to generate a random graph. The research effort in this project has three technical aims. First, the project will develop a probabilistic framework for building graph generative models with neural networks. Second, the project will overcome efficiency issues in model training and model predictions. Third, the project will compare newly developed models with traditional random graph models to deepen the understanding of network data. From the comparison, new methods will also be developed to preserve private information in the sharing of network data. Models to be developed from this project will have a solid statistical foundation and be connected to traditional random graph models.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

图是不同实体之间的许多不同类型的连接、关系或网络的模型。它可以用来表示微观层次的对象，如分子被记录为连接原子的键，以及宏观层次的网络，如由用户之间的连接组成的社交网络。图结构通常包含丰富的信息，并且规模很大。一个重要的任务是合成新的图，是类似的，但不同于现有的。例如，药物设计任务可能需要一个模型来生成新的分子图以进行筛选;社交网络的数据共享任务可能需要一个模型来合成和共享与原始网络相似的图，而不会释放敏感的链接信息。该项目结合了神经网络和概率方法，开发用于为各种任务生成新图形的工具。本项目将倡导一个基于离散顺序过程的图生成模型开发的新方向--生成模型从一个随机或平凡的图开始，经过多步裁剪生成一个随机图。该项目的研究工作有三个技术目标。首先，该项目将开发一个概率框架，用于使用神经网络构建图生成模型。其次，该项目将克服模型训练和模型预测中的效率问题。第三，该项目将比较新开发的模型与传统的随机图模型，以加深对网络数据的理解。通过比较，还将开发新的方法来保护网络数据共享中的隐私信息。该项目开发的模型将具有坚实的统计基础，并与传统的随机图模型相连接。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。