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Combining the merits of both denoising diffusion probabilistic models and gradient boosting, the diffusion boosting paradigm is introduced for tackling supervised learning problems. We develop Diffusion Boosted Trees (DBT), which can be…

Machine Learning · Statistics 2024-06-05 Xizewen Han , Mingyuan Zhou

Prompt agents have recently emerged as a promising paradigm for automated prompt optimization, framing prompt discovery as a sequential decision-making problem over a structured prompt space. While this formulation enables the use of…

Computation and Language · Computer Science 2026-05-12 Siran Peng , Weisong Zhao , Tianyu Fu , Chenxu Zhao , Tianshuo Zhang , Haoyuan Zhang , Xiangyu Zhu , Minghui Wu , Zhen Lei

We present an algorithm for extraction of a probabilistic deterministic finite automaton (PDFA) from a given black-box language model, such as a recurrent neural network (RNN). The algorithm is a variant of the exact-learning algorithm L*,…

Machine Learning · Computer Science 2020-01-01 Gail Weiss , Yoav Goldberg , Eran Yahav

We propose a new supervised learning algorithm, for classification and regression problems where two or more preliminary predictors are available. We introduce \texttt{KernelCobra}, a non-linear learning strategy for combining an arbitrary…

Machine Learning · Computer Science 2020-02-05 Benjamin Guedj , Bhargav Srinivasa Desikan

In this work we present a preliminary investigation of a novel algorithm called Dyna-T. In reinforcement learning (RL) a planning agent has its own representation of the environment as a model. To discover an optimal policy to interact with…

Machine Learning · Computer Science 2022-01-20 Tarek Faycal , Claudio Zito

In the present work we propose an unsupervised ensemble method consisting of oblique trees that can address the task of auto-encoding, namely Oblique Forest AutoEncoders (briefly OF-AE). Our method is a natural extension of the eForest…

Machine Learning · Computer Science 2023-01-04 Cristian Daniel Alecsa

Although deep learning are commonly employed for image recognition, usually huge amount of labeled training data is required, which may not always be readily available. This leads to a noticeable performance disparity when compared to…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Enoch Solomon , Abraham Woubie , Eyael Solomon Emiru

We discuss an autoencoder model in which the encoding and decoding functions are implemented by decision trees. We use the soft decision tree where internal nodes realize soft multivariate splits given by a gating function and the overall…

Machine Learning · Computer Science 2014-09-29 Ozan İrsoy , Ethem Alpaydın

An inductive theorem proving method for constrained term rewriting systems, which is based on rewriting induction, needs a decision procedure for reduction-completeness of constrained terms. In addition, the sufficient complete property of…

Formal Languages and Automata Theory · Computer Science 2013-11-25 Naoki Nishida , Masahiko Sakai , Yasuhiro Nakano

In this research we address the problem of capturing recurring concepts in a data stream environment. Recurrence capture enables the re-use of previously learned classifiers without the need for re-learning while providing for better…

Machine Learning · Computer Science 2014-06-25 Sakthithasan Sripirakas , Russel Pears

In this work, we perform unsupervised learning of representations by maximizing mutual information between an input and the output of a deep neural network encoder. Importantly, we show that structure matters: incorporating knowledge about…

In novelty detection, the goal is to decide if a new data point should be categorized as an inlier or an outlier, given a training dataset that primarily captures the inlier distribution. Recent approaches typically use deep encoder and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Muhammad Asad , Ihsan Ullah , Ganesh Sistu , Michael G. Madden

Many discriminative natural language understanding (NLU) tasks have large label spaces. Learning such a process of large-space decision making is particularly challenging due to the lack of training instances per label and the difficulty of…

Computation and Language · Computer Science 2023-10-31 Nan Xu , Fei Wang , Mingtao Dong , Muhao Chen

Towards a future where machine learning systems will integrate into every aspect of people's lives, researching methods to interpret such systems is necessary, instead of focusing exclusively on enhancing their performance. Enriching the…

Machine Learning · Computer Science 2021-12-21 Ioannis Mollas , Nick Bassiliades , Ioannis Vlahavas , Grigorios Tsoumakas

In this paper a robust algorithm for DOA estimation of coherent sources in presence of antenna array imperfections is presented. We exploit the current advances of deep learning to overcome two of the most common problems facing the state…

Signal Processing · Electrical Eng. & Systems 2020-05-07 Aya Mostafa Ahmed , Omar Eissa , Aydin Sezgin

Learning from different data views by exploring the underlying complementary information among them can endow the representation with stronger expressive ability. However, high-dimensional features tend to contain noise, and furthermore,…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Yu Geng , Zongbo Han , Changqing Zhang , Qinghua Hu

The Locally Competitive Algorithm (LCA) uses local competition between non-spiking leaky integrator neurons to infer sparse representations, allowing for potentially real-time execution on massively parallel neuromorphic architectures such…

Computer Vision and Pattern Recognition · Computer Science 2022-06-01 Gavin Parpart , Carlos Gonzalez , Terrence C. Stewart , Edward Kim , Jocelyn Rego , Andrew O'Brien , Steven Nesbit , Garrett T. Kenyon , Yijing Watkins

Linguistic structures exhibit a rich array of global phenomena, however commonly used Markov models are unable to adequately describe these phenomena due to their strong locality assumptions. We propose a novel hierarchical model for…

Machine Learning · Computer Science 2015-03-10 Ehsan Shareghi , Gholamreza Haffari , Trevor Cohn , Ann Nicholson

Deep generative models have been used in recent years to learn coherent latent representations in order to synthesize high-quality images. In this work, we propose a neural network to learn a generative model for sampling consistent indoor…

Computer Vision and Pattern Recognition · Computer Science 2020-08-24 Pulak Purkait , Christopher Zach , Ian Reid

Both bottom-up and top-down strategies have been used for neural transition-based constituent parsing. The parsing strategies differ in terms of the order in which they recognize productions in the derivation tree, where bottom-up…

Computation and Language · Computer Science 2017-07-18 Jiangming Liu , Yue Zhang