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Quantification is a supervised learning task that consists in predicting, given a set of classes C and a set D of unlabelled items, the prevalence (or relative frequency) p(c|D) of each class c in C. Quantification can in principle be…

机器学习 · 计算机科学 2021-09-22 Andrea Esuli , Alejandro Moreo Fernández , Fabrizio Sebastiani

The Variational Autoencoder (VAE) has proven to be an effective model for producing semantically meaningful latent representations for natural data. However, it has thus far seen limited application to sequential data, and, as we…

机器学习 · 计算机科学 2019-11-12 Adam Roberts , Jesse Engel , Colin Raffel , Curtis Hawthorne , Douglas Eck

Text generation from semantic graphs is traditionally performed with deterministic methods, which generate a unique description given an input graph. However, the generation problem admits a range of acceptable textual outputs, exhibiting…

计算与语言 · 计算机科学 2021-08-16 Jiuzhou Han , Daniel Beck , Trevor Cohn

Word embedding models offer continuous vector representations that can capture rich contextual semantics based on their word co-occurrence patterns. While these word vectors can provide very effective features used in many NLP tasks such as…

计算与语言 · 计算机科学 2017-02-27 Cem Safak Sahin , Rajmonda S. Caceres , Brandon Oselio , William M. Campbell

Machine learning systems regularly deal with structured data in real-world applications. Unfortunately, such data has been difficult to faithfully represent in a way that most machine learning techniques would expect, i.e. as a real-valued…

Variational Autoencoders are powerful models for unsupervised learning. However deep models with several layers of dependent stochastic variables are difficult to train which limits the improvements obtained using these highly expressive…

The ability of learning disentangled representations represents a major step for interpretable NLP systems as it allows latent linguistic features to be controlled. Most approaches to disentanglement rely on continuous variables, both for…

计算与语言 · 计算机科学 2021-09-16 Giangiacomo Mercatali , André Freitas

Conventional unsupervised hashing methods usually take advantage of similarity graphs, which are either pre-computed in the high-dimensional space or obtained from random anchor points. On the one hand, existing methods uncouple the…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Yuming Shen , Jie Qin , Jiaxin Chen , Mengyang Yu , Li Liu , Fan Zhu , Fumin Shen , Ling Shao

We explore story generation: creative systems that can build coherent and fluent passages of text about a topic. We collect a large dataset of 300K human-written stories paired with writing prompts from an online forum. Our dataset enables…

计算与语言 · 计算机科学 2018-05-15 Angela Fan , Mike Lewis , Yann Dauphin

We present a generative model for multitask conditional language generation. Our guiding hypothesis is that a shared set of latent skills underlies many disparate language generation tasks, and that explicitly modelling these skills in a…

计算与语言 · 计算机科学 2020-02-25 Kris Cao , Dani Yogatama

We propose a multi-layer variational autoencoder method, we call HR-VQVAE, that learns hierarchical discrete representations of the data. By utilizing a novel objective function, each layer in HR-VQVAE learns a discrete representation of…

计算机视觉与模式识别 · 计算机科学 2022-08-10 Mohammad Adiban , Kalin Stefanov , Sabato Marco Siniscalchi , Giampiero Salvi

In the last few years, neural networks have been intensively used to develop meaningful distributed representations of words and contexts around them. When these representations, also known as "embeddings", are learned from unsupervised…

计算与语言 · 计算机科学 2019-08-07 Giuseppe Marra , Andrea Zugarini , Stefano Melacci , Marco Maggini

Contrastive models like CLIP have been shown to learn robust representations of images that capture both semantics and style. To leverage these representations for image generation, we propose a two-stage model: a prior that generates a…

计算机视觉与模式识别 · 计算机科学 2022-04-14 Aditya Ramesh , Prafulla Dhariwal , Alex Nichol , Casey Chu , Mark Chen

Deep learning on graphs has become a popular research topic with many applications. However, past work has concentrated on learning graph embedding tasks, which is in contrast with advances in generative models for images and text. Is it…

机器学习 · 计算机科学 2018-02-13 Martin Simonovsky , Nikos Komodakis

Recently, discrete latent variable models have received a surge of interest in both Natural Language Processing (NLP) and Computer Vision (CV), attributed to their comparable performance to the continuous counterparts in representation…

计算与语言 · 计算机科学 2022-11-08 Erxin Yu , Lan Du , Yuan Jin , Zhepei Wei , Yi Chang

We develop a method for producing vector sketches one part at a time. To do this, we train a multi-modal language model-based agent using a novel multi-turn process-reward reinforcement learning following supervised fine-tuning. Our…

人工智能 · 计算机科学 2026-04-27 Xiaodan Du , Ruize Xu , David Yunis , Yael Vinker , Greg Shakhnarovich

Goal-oriented generative script learning aims to generate subsequent steps to reach a particular goal, which is an essential task to assist robots or humans in performing stereotypical activities. An important aspect of this process is the…

计算与语言 · 计算机科学 2025-06-11 Qingyun Wang , Manling Li , Hou Pong Chan , Lifu Huang , Julia Hockenmaier , Girish Chowdhary , Heng Ji

Embeddings are a basic initial feature extraction step in many machine learning models, particularly in natural language processing. An embedding attempts to map data tokens to a low-dimensional space where similar tokens are mapped to…

机器学习 · 计算机科学 2025-04-10 Golara Ahmadi Azar , Melika Emami , Alyson Fletcher , Sundeep Rangan

We present an unsupervised method to obtain disentangled representations of sentences that single out semantic content. Using modified Transformers as building blocks, we train a Variational Autoencoder to translate the sentence to a fixed…

计算与语言 · 计算机科学 2020-12-29 Ghazi Felhi , Joseph Le Roux , Djamé Seddah

We study the problem of self-supervised structured representation learning using autoencoders for downstream tasks such as generative modeling. Unlike most methods which rely on matching an arbitrary, relatively unstructured, prior…

机器学习 · 计算机科学 2024-02-16 Felix Leeb , Guilia Lanzillotta , Yashas Annadani , Michel Besserve , Stefan Bauer , Bernhard Schölkopf