Robust Adaptive Submodular Maximization
نویسندگان
چکیده
The goal of a sequential decision-making problem is to design an interactive policy that adaptively selects group items, each selection based on the feedback from past, maximize expected utility selected items. It has been shown functions many real-world applications are adaptive submodular. However, most existing studies submodular optimization focus average-case, is, their objective find maximizes over known distribution realizations. Unfortunately, good average-case performance may have very poor under worst-case realization. In this study, we propose study two variants problems, namely, maximization and robust maximization. first aims latter one policy, if any, achieves both near optimal simultaneously. We introduce new class stochastic functions, called function. For subject p-system constraint, develop greedy [Formula: see text] approximation ratio against function cardinality constraints (respectively, partition matroid constraints), submodular, hybrid close 1/3) worst- settings also describe several our theoretical results, including pool-base active learning, set cover, viral marketing. History: Accepted by Andrea Lodi, Area Editor for Design & Analysis Algorithms—Discrete. Supplemental Material: online appendix available at https://doi.org/10.1287/ijoc.2022.1239 .
منابع مشابه
Distributionally Robust Submodular Maximization
Submodular functions have applications throughout machine learning, but in many settings, we do not have direct access to the underlying function f . We focus on stochastic functions that are given as an expectation of functions over a distribution P . In practice, we often have only a limited set of samples fi from P . The standard approach indirectly optimizes f by maximizing the sum of fi. H...
متن کاملRobust Monotone Submodular Function Maximization
Instances of monotone submodular function maximization with cardinality constraint occur often in practical applications. One example is feature selection in machine learning, where in many models, adding a new feature to an existing set of features always improves the modeling power (monotonicity) and the marginal benefit of adding a new feature decreases as we consider larger sets (submodular...
متن کاملNon-Monotone Adaptive Submodular Maximization
A wide range of AI problems, such as sensor placement, active learning, and network influence maximization, require sequentially selecting elements from a large set with the goal of optimizing the utility of the selected subset. Moreover, each element that is picked may provide stochastic feedback, which can be used to make smarter decisions about future selections. Finding efficient policies f...
متن کاملDeletion-Robust Submodular Maximization at Scale
Can we efficiently extract useful information from a large user-generated dataset while protecting the privacy of the users and/or ensuring fairness in representation. We cast this problem as an instance of a deletion-robust submodular maximization where part of the data may be deleted due to privacy concerns or fairness criteria. We propose the first memory-efficient centralized, streaming, an...
متن کاملRobust Submodular Maximization: Offline and Online Algorithms
Submodular function maximization has found numerous applications in constrained subset selection problems, for example picking a subset of candidate sensor locations that are most informative [22, 19, 16]. In many of these applications, the goal is to obtain a solution that optimizes multiple objectives at the same time. Constrained Robust Submodular maximization problems are used as a natural ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Informs Journal on Computing
سال: 2022
ISSN: ['1091-9856', '1526-5528']
DOI: https://doi.org/10.1287/ijoc.2022.1239