Search Results for author: Joohyung Lee

Found 33 papers, 8 papers with code

Compact and De-biased Negative Instance Embedding for Multi-Instance Learning on Whole-Slide Image Classification

1 code implementation16 Feb 2024 Joohyung Lee, Heejeong Nam, Kwanhyung Lee, Sangchul Hahn

Using this free annotation, we introduce a semi-supervision signal to de-bias the inter-slide variability and to capture the common factors of variation within normal patches.

Image Classification Multiple Instance Learning

Exploring the Privacy-Energy Consumption Tradeoff for Split Federated Learning

no code implementations15 Nov 2023 Joohyung Lee, Mohamed Seif, Jungchan Cho, H. Vincent Poor

However, since the model is split at a specific layer, known as a cut layer, into both client-side and server-side models for the SFL, the choice of the cut layer in SFL can have a substantial impact on the energy consumption of clients and their privacy, as it influences the training burden and the output of the client-side models.

Federated Learning

First-Order Stable Model Semantics with Intensional Functions

no code implementations15 Jul 2023 Michael Bartholomew, Joohyung Lee

We extend the first-order stable model semantics by Ferraris, Lee, and Lifschitz to allow intensional functions -- functions that are specified by a logic program just like predicates are specified.

On Loop Formulas with Variables

no code implementations15 Jul 2023 Joohyung Lee, Yunsong Meng

Recently Ferraris, Lee and Lifschitz proposed a new definition of stable models that does not refer to grounding, which applies to the syntax of arbitrary first-order sentences.

Causal Laws and Multi-Valued Fluents

no code implementations15 Jul 2023 Enrico Giunchiglia, Joohyung Lee, Vladimir Lifschitz, Hudson Turner

This paper continues the line of work on representing properties of actions in nonmonotonic formalisms that stresses the distinction between being "true" and being "caused", as in the system of causal logic introduced by McCain and Turner and in the action language C proposed by Giunchiglia and Lifschitz.

Elementary Sets for Logic Programs

no code implementations15 Jul 2023 Martin Gebser, Joohyung Lee, Yuliya Lierler

We propose the notion of an elementary set, which is almost equivalent to the notion of an elementary loop for nondisjunctive programs, but is simpler, and, unlike elementary loops, can be extended to disjunctive programs without producing unintuitive results.

Safe Formulas in the General Theory of Stable Models

no code implementations15 Jul 2023 Joohyung Lee, Vladimir Lifschitz, Ravi Palla

Safe first-order formulas generalize the concept of a safe rule, which plays an important role in the design of answer set solvers.

Sentence

NeurASP: Embracing Neural Networks into Answer Set Programming

1 code implementation15 Jul 2023 Zhun Yang, Adam Ishay, Joohyung Lee

We present NeurASP, a simple extension of answer set programs by embracing neural networks.

Coupling Large Language Models with Logic Programming for Robust and General Reasoning from Text

1 code implementation15 Jul 2023 Zhun Yang, Adam Ishay, Joohyung Lee

It only needs a few examples to guide the LLM's adaptation to a specific task, along with reusable ASP knowledge modules that can be applied to multiple tasks.

Language Modelling Large Language Model +1

Leveraging Large Language Models to Generate Answer Set Programs

1 code implementation15 Jul 2023 Adam Ishay, Zhun Yang, Joohyung Lee

Specifically, we employ an LLM to transform natural language descriptions of logic puzzles into answer set programs.

Formal Logic In-Context Learning

Injecting Logical Constraints into Neural Networks via Straight-Through Estimators

1 code implementation10 Jul 2023 Zhun Yang, Joohyung Lee, Chiyoun Park

Injecting discrete logical constraints into neural network learning is one of the main challenges in neuro-symbolic AI.

Learning to Solve Constraint Satisfaction Problems with Recurrent Transformer

1 code implementation10 Jul 2023 Zhun Yang, Adam Ishay, Joohyung Lee

Constraint satisfaction problems (CSPs) are about finding values of variables that satisfy the given constraints.

Moving from 2D to 3D: volumetric medical image classification for rectal cancer staging

1 code implementation13 Sep 2022 Joohyung Lee, Jieun Oh, Inkyu Shin, You-sung Kim, Dae Kyung Sohn, Tae-sung Kim, In So Kweon

In this study, we present a volumetric convolutional neural network to accurately discriminate T2 from T3 stage rectal cancer with rectal MR volumes.

Image Classification Medical Image Classification

Bunched LPCNet2: Efficient Neural Vocoders Covering Devices from Cloud to Edge

no code implementations27 Mar 2022 Sangjun Park, Kihyun Choo, Joohyung Lee, Anton V. Porov, Konstantin Osipov, June Sig Sung

Text-to-Speech (TTS) services that run on edge devices have many advantages compared to cloud TTS, e. g., latency and privacy issues.

Computational Efficiency

Dual Attention in Time and Frequency Domain for Voice Activity Detection

1 code implementation27 Mar 2020 Joohyung Lee, Youngmoon Jung, Hoirin Kim

The results show that the focal loss can improve the performance in various imbalance situations compared to the cross entropy loss, a commonly used loss function in VAD.

Action Detection Activity Detection

Strong Equivalence for LPMLN Programs

no code implementations18 Sep 2019 Joohyung Lee, Man Luo

We show that the verification of strong equivalence in LPMLN can be reduced to equivalence checking in classical logic via a reduct and choice rules as well as to equivalence checking under the "soft" logic of here-and-there.

Bridging Commonsense Reasoning and Probabilistic Planning via a Probabilistic Action Language

no code implementations31 Jul 2019 Yi Wang, Shiqi Zhang, Joohyung Lee

In this paper, we present a unified framework to integrate icorpp's reasoning and planning components.

Decision Making

Elaboration Tolerant Representation of Markov Decision Process via Decision-Theoretic Extension of Probabilistic Action Language pBC+

no code implementations1 Apr 2019 Yi Wang, Joohyung Lee

Alternatively, the semantics of pBC+ can also be defined in terms of Markov Decision Process (MDP), which in turn allows for representing MDP in a succinct and elaboration tolerant way as well as to leverage an MDP solver to compute pBC+.

Reducing the Model Variance of a Rectal Cancer Segmentation Network

no code implementations22 Jan 2019 Joohyung Lee, Ji Eun Oh, Min Ju Kim, Bo Yun Hur, Dae Kyung Sohn

As a result, adding a rectum segmentation task reduced the model variance of the rectal cancer segmentation network within tumor regions by a factor of 0. 90; data augmentation further reduced the variance by a factor of 0. 89.

Data Augmentation Image Segmentation +4

Weight Learning in a Probabilistic Extension of Answer Set Programs

no code implementations14 Aug 2018 Joohyung Lee, Yi Wang

Learning in LPMLN is in accordance with the stable model semantics, thereby it learns parameters for probabilistic extensions of knowledge-rich domains where answer set programming has shown to be useful but limited to the deterministic case, such as reachability analysis and reasoning about actions in dynamic domains.

A Probabilistic Extension of Action Language BC+

no code implementations2 May 2018 Joohyung Lee, Yi Wang

We present a probabilistic extension of action language BC+.

Translating LPOD and CR-Prolog2 into Standard Answer Set Programs

no code implementations2 May 2018 Joohyung Lee, Zhun Yang

Logic Programs with Ordered Disjunction (LPOD) is an extension of standard answer set programs to handle preference using the construct of ordered disjunction, and CR-Prolog2 is an extension of standard answer set programs with consistency restoring rules and LPOD-like ordered disjunction.

Representing Hybrid Automata by Action Language Modulo Theories

no code implementations20 Jul 2017 Joohyung Lee, Nikhil Loney, Yunsong Meng

We first show how to represent linear hybrid automata with convex invariants by an action language modulo theories.

Translation

Computing LPMLN Using ASP and MLN Solvers

no code implementations19 Jul 2017 Joohyung Lee, Samidh Talsania, Yi Wang

LPMLN is a recent addition to probabilistic logic programming languages.

On the Semantic Relationship between Probabilistic Soft Logic and Markov Logic

no code implementations28 Jun 2016 Joohyung Lee, Yi Wang

Markov Logic Networks (MLN) and Probabilistic Soft Logic (PSL) are widely applied formalisms in Statistical Relational Learning, an emerging area in Artificial Intelligence that is concerned with combining logical and statistical AI.

Relational Reasoning

Reformulating the Situation Calculus and the Event Calculus in the General Theory of Stable Models and in Answer Set Programming

no code implementations18 Jan 2014 Joohyung Lee, Ravi Palla

Based on the discovery that circumscription and the stable model semantics coincide on a class of canonical formulas, we reformulate the situation calculus and the event calculus in the general theory of stable models.

Translation

First-Order Stable Model Semantics and First-Order Loop Formulas

no code implementations16 Jan 2014 Joohyung Lee, Yunsong Meng

Lin and Zhaos theorem on loop formulas states that in the propositional case the stable model semantics of a logic program can be completely characterized by propositional loop formulas, but this result does not fully carry over to the first-order case.

A Functional View of Strong Negation in Answer Set Programming

no code implementations20 Dec 2013 Michael Bartholomew, Joohyung Lee

The distinction between strong negation and default negation has been useful in answer set programming.

Negation

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