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Training deep networks with noisy labels leads to poor generalization and degraded accuracy due to overfitting to label noise. Existing approaches for learning with noisy labels often rely on the availability of a clean subset of data. By…

Machine Learning · Computer Science 2025-11-27 David Szczecina , Nicholas Pellegrino , Paul Fieguth

Permissionless blockchains allow the execution of arbitrary programs (called smart contracts), enabling mutually untrusted entities to interact without relying on trusted third parties. Despite their potential, repeated security concerns…

Cryptography and Security · Computer Science 2018-08-27 Petar Tsankov , Andrei Dan , Dana Drachsler Cohen , Arthur Gervais , Florian Buenzli , Martin Vechev

As blockchain technology and smart contracts become widely adopted, securing them throughout every stage of the transaction process is essential. The concern of improved security for smart contracts is to find and detect vulnerabilities…

Cryptography and Security · Computer Science 2025-03-11 S M Mostaq Hossain , Amani Altarawneh , Jesse Roberts

Smart contracts, self-executing agreements directly encoded in code, are fundamental to blockchain technology, especially in decentralized finance (DeFi) and Web3. However, the rise of Ponzi schemes in smart contracts poses significant…

Cryptography and Security · Computer Science 2024-12-19 Cong Wu , Jing Chen , Ziwei Wang , Ruichao Liang , Ruiying Du

An important problem in smart contract security is understanding the likelihood and criticality of discovered, or potential, weaknesses in contracts. In this paper we provide a summary of Ethereum smart contract audits performed for 23…

Software Engineering · Computer Science 2020-01-13 Alex Groce , Josselin Feist , Gustavo Grieco , Michael Colburn

Blockchain and smart contract technology are novel approaches to data and code management that facilitate trusted computing by allowing for development in a distributed and decentralized manner. Testing smart contracts comes with its own…

Software Engineering · Computer Science 2022-04-18 Stefan Driessen , Dario Di Nucci , Geert Monsieur , Damian A. Tamburri , Willem-Jan van den Heuvel

State-of-the-art semi-supervised learning (SSL) approaches rely on highly confident predictions to serve as pseudo-labels that guide the training on unlabeled samples. An inherent drawback of this strategy stems from the quality of the…

Machine Learning · Computer Science 2024-03-26 Shambhavi Mishra , Balamurali Murugesan , Ismail Ben Ayed , Marco Pedersoli , Jose Dolz

Ethereum smart contracts hold tens of billions of USD in DeFi and NFTs, yet comprehensive security analysis remains difficult due to unverified code, proxy-based architectures, and the reliance on manual inspection of complex execution…

Cryptography and Security · Computer Science 2025-09-04 Shuzheng Wang , Yue Huang , Zhuoer Xu , Yuming Huang , Jing Tang

Context: Smart contracts are computer programs that are automatically executed on the blockchain. Vulnerabilities in their implementation have led to severe loss of cryptocurrency. Smart contracts become immutable when deployed to the…

Cryptography and Security · Computer Science 2022-03-29 Majd Soud , Grischa Liebel , Mohammad Hamdaqa

The inherent determinism of blockchain technology poses a significant challenge to generating secure random numbers within smart contracts, leading to exploitable vulnerabilities, particularly in decentralized finance (DeFi) ecosystems and…

Cryptography and Security · Computer Science 2025-10-22 Hadis Rezaei , Ahmed Afif Monrat , Karl Andersson , Francesco Flammini

We introduce the SaaS Algorithm for semi-supervised learning, which uses learning speed during stochastic gradient descent in a deep neural network to measure the quality of an iterative estimate of the posterior probability of unknown…

Computer Vision and Pattern Recognition · Computer Science 2018-05-04 Safa Cicek , Alhussein Fawzi , Stefano Soatto

One of the most difficult challenges in cybersecurity is eliminating Distributed Denial of Service (DDoS) attacks. Automating this task using artificial intelligence is a complex process due to the inherent class imbalance and lack of…

Cryptography and Security · Computer Science 2026-02-06 Ehsan Hallaji , Vaishnavi Shanmugam , Roozbeh Razavi-Far , Mehrdad Saif

Ethereum smart contracts are an innovation built on top of the blockchain technology, which provides a platform for automatically executing contracts in an anonymous, distributed, and trusted way. The problem is magnified by the fact that…

Cryptography and Security · Computer Science 2019-11-07 Jialiang Chang , Bo Gao , Hao Xiao , Jun Sun , Yan Cai , Zijiang Yang

Smart contracts are Turing-complete programs that execute on the infrastructure of the blockchain, which often manage valuable digital assets. Solidity is one of the most popular programming languages for writing smart contracts on the…

Software Engineering · Computer Science 2020-04-21 Tai D. Nguyen , Long H. Pham , Jun Sun , Yun Lin , Quang Tran Minh

Semi-supervised learning (SSL) leverages abundant unlabeled data alongside limited labeled data to enhance learning. As vision foundation models (VFMs) increasingly serve as the backbone of vision applications, it remains unclear how SSL…

Machine Learning · Computer Science 2025-11-06 Ping Zhang , Zheda Mai , Quang-Huy Nguyen , Wei-Lun Chao

Context: Smart contract vulnerabilities pose significant security risks for the Ethereum ecosystem, driving the development of automated tools for detection and mitigation. Smart contracts are written in Solidity, a programming language…

Software Engineering · Computer Science 2025-04-09 Gerardo Iuliano , Davide Corradini , Michele Pasqua , Mariano Ceccato , Dario Di Nucci

Semi-supervised learning (SSL) has been a powerful strategy to incorporate few labels in learning better representations. In this paper, we focus on a practical scenario that one aims to apply SSL when unlabeled data may contain…

Computer Vision and Pattern Recognition · Computer Science 2022-08-22 Jongjin Park , Sukmin Yun , Jongheon Jeong , Jinwoo Shin

Given an unlabeled dataset and an annotation budget, we study how to selectively label a fixed number of instances so that semi-supervised learning (SSL) on such a partially labeled dataset is most effective. We focus on selecting the right…

Machine Learning · Computer Science 2023-08-24 Xudong Wang , Long Lian , Stella X. Yu

Most blockchains cannot hide the binary code of programs (i.e., smart contracts) running on them. To conceal proprietary business logic and to potentially deter attacks, many smart contracts are closed-source and employ layers of…

Cryptography and Security · Computer Science 2025-09-09 Sen Yang , Kaihua Qin , Aviv Yaish , Fan Zhang

In this paper, we study teacher-student learning from the perspective of data initialization and propose a novel algorithm called Active Teacher(Source code are available at: \url{https://github.com/HunterJ-Lin/ActiveTeacher}) for…

Computer Vision and Pattern Recognition · Computer Science 2023-03-16 Peng Mi , Jianghang Lin , Yiyi Zhou , Yunhang Shen , Gen Luo , Xiaoshuai Sun , Liujuan Cao , Rongrong Fu , Qiang Xu , Rongrong Ji