Search Results for author: Mucahit Cevik

Found 28 papers, 5 papers with code

Dynamic AGV Task Allocation in Intelligent Warehouses

no code implementations26 Dec 2023 Arash Dehghan, Mucahit Cevik, Merve Bodur

This paper explores the integration of Automated Guided Vehicles (AGVs) in warehouse order picking, a crucial and cost-intensive aspect of warehouse operations.

Decision Making Management

Neural Approximate Dynamic Programming for the Ultra-fast Order Dispatching Problem

no code implementations21 Nov 2023 Arash Dehghan, Mucahit Cevik, Merve Bodur

Our work aims to enhance the operational efficiency of SDD by focusing on the ultra-fast Order Dispatching Problem (ODP), which involves matching and dispatching orders to couriers within a centralized warehouse setting, and completing the delivery within a strict timeline (e. g., within minutes).

Feature Engineering

Assessing the impact of emergency department short stay units using length-of-stay prediction and discrete event simulation

no code implementations4 Aug 2023 Mucahit Cevik, Can Kavaklioglu, Fahad Razak, Amol Verma, Ayse Basar

Accurately predicting hospital length-of-stay at the time a patient is admitted to hospital may help guide clinical decision making and resource allocation.

Decision Making feature selection +1

Data Augmentation for Conflict and Duplicate Detection in Software Engineering Sentence Pairs

no code implementations16 May 2023 Garima Malik, Mucahit Cevik, Ayşe Başar

This paper explores the use of text data augmentation techniques to enhance conflict and duplicate detection in software engineering tasks through sentence pair classification.

Data Augmentation LEMMA +3

Explaining Exchange Rate Forecasts with Macroeconomic Fundamentals Using Interpretive Machine Learning

no code implementations23 Mar 2023 Davood Pirayesh Neghab, Mucahit Cevik, M. I. M. Wahab

The changes in the sign and magnitude of the contributions of crude oil to the exchange rate are consistent with significant events in the commodity and energy markets and the evolution of the crude oil trend in Canada.

DANLIP: Deep Autoregressive Networks for Locally Interpretable Probabilistic Forecasting

no code implementations5 Jan 2023 Ozan Ozyegen, Juyoung Wang, Mucahit Cevik

Despite the high performance of neural network-based time series forecasting methods, the inherent challenge in explaining their predictions has limited their applicability in certain application areas.

Probabilistic Time Series Forecasting Time Series

A Concurrent CNN-RNN Approach for Multi-Step Wind Power Forecasting

no code implementations2 Jan 2023 Syed Kazmi, Berk Gorgulu, Mucahit Cevik, Mustafa Gokce Baydogan

One approach to remedy this challenge is to utilize weather information from multiple points across a geographical grid to obtain a holistic view of the wind patterns, along with temporal information from the previous power outputs of the wind farms.

Decision Making

ADPTriage: Approximate Dynamic Programming for Bug Triage

1 code implementation2 Nov 2022 Hadi Jahanshahi, Mucahit Cevik, Kianoush Mousavi, Ayşe Başar

In this study, we develop a Markov decision process (MDP) model for an online bug triage task.

Bug fixing Decision Making

Improved $α$-GAN architecture for generating 3D connected volumes with an application to radiosurgery treatment planning

no code implementations13 Jul 2022 Sanaz Mohammadjafari, Mucahit Cevik, Ayse Basar

On a synthetic dataset of connected 3D spheres and ellipsoids, our model can generate fully connected 3D shapes with similar geometrical characteristics to that of training data.

Synthetic Data Generation

Linear programming-based solution methods for constrained partially observable Markov decision processes

no code implementations28 Jun 2022 Robert K. Helmeczi, Can Kavaklioglu, Mucahit Cevik

Finally, the flexibility of LP-based approaches is demonstrated by applying deterministic policy constraints, and a detailed investigation into their impact on rewards and CPU run time is provided.

A multi-objective constrained POMDP model for breast cancer screening

no code implementations10 Jun 2022 Robert K. Helmeczi, Can Kavaklioglu, Mucahit Cevik, Davood Pirayesh Neghab

While most countries have large-scale screening programs, there is no consensus on a single globally accepted guideline for breast cancer screening.

Time Series Clustering for Grouping Products Based on Price and Sales Patterns

no code implementations18 Apr 2022 Aysun Bozanta, Sean Berry, Mucahit Cevik, Beste Bulut, Deniz Yigit, Fahrettin F. Gonen, Ayşe Başar

We compare our approach with traditional clustering algorithms, which typically rely on generic distance metrics such as Euclidean distance, and image clustering approaches that aim to group data by capturing its visual patterns.

Clustering Image Clustering +3

S-DABT: Schedule and Dependency-Aware Bug Triage in Open-Source Bug Tracking Systems

1 code implementation12 Apr 2022 Hadi Jahanshahi, Mucahit Cevik

We further incorporate the schedule of developers in our formulation to have a more comprehensive model for this multifaceted problem.

Blocking Bug fixing +1

VARGAN: Variance Enforcing Network Enhanced GAN

no code implementations5 Sep 2021 Sanaz Mohammadjafari, Mucahit Cevik, Ayse Basar

Generative adversarial networks (GANs) are one of the most widely used generative models.

Text Classification for Predicting Multi-level Product Categories

no code implementations2 Sep 2021 Hadi Jahanshahi, Ozan Ozyegen, Mucahit Cevik, Beste Bulut, Deniz Yigit, Fahrettin F. Gonen, Ayşe Başar

In our experiments, we investigate the generalizability of the trained models to the products of other online retailers, the dynamic masking of infeasible subcategories for pretrained language models, and the benefits of incorporating product titles in multiple languages.

text-classification Text Classification

Word-level Text Highlighting of Medical Texts for Telehealth Services

no code implementations21 May 2021 Ozan Ozyegen, Devika Kabe, Mucahit Cevik

The first method uses TF-IDF scores directly to highlight important parts of the text.

DABT: A Dependency-aware Bug Triaging Method

1 code implementation26 Apr 2021 Hadi Jahanshahi, Kritika Chhabra, Mucahit Cevik, Ayşe Başar

In software engineering practice, fixing a bug promptly reduces the associated costs.

Blocking Bug fixing

Auto Response Generation in Online Medical Chat Services

no code implementations26 Apr 2021 Hadi Jahanshahi, Syed Kazmi, Mucahit Cevik

These services have become gradually popular over the years with the advent of necessary technological infrastructure.

Clustering Response Generation

Predicting the Number of Reported Bugs in a Software Repository

1 code implementation24 Apr 2021 Hadi Jahanshahi, Mucahit Cevik, Ayşe Başar

We observe that LSTM is effective when considering long-run predictions whereas Random Forest Regressor enriched by exogenous variables performs better for predicting the number of bugs in the short term.

Time Series Time Series Forecasting

Does chronology matter in JIT defect prediction? A Partial Replication Study

1 code implementation5 Mar 2021 Hadi Jahanshahi, Dhanya Jothimani, Ayşe Başar, Mucahit Cevik

In this work, we aim to investigate the effect of code change properties on JIT models over time.

Moving from Cross-Project Defect Prediction to Heterogeneous Defect Prediction: A Partial Replication Study

no code implementations5 Mar 2021 Hadi Jahanshahi, Mucahit Cevik, Ayşe Başar

Our main goal is to extend prior research and explore the feasibility of HDP and finally to compare its performance with that of its predecessor, Cross-Project Defect Prediction.

Transfer Learning

Explainable boosted linear regression for time series forecasting

no code implementations18 Sep 2020 Igor Ilic, Berk Gorgulu, Mucahit Cevik, Mustafa Gokce Baydogan

We observe that EBLR substantially improves the base model performance through extracted features, and provide a comparable performance to other well established approaches.

Decision Making Prediction Intervals +3

Evaluation of Local Explanation Methods for Multivariate Time Series Forecasting

no code implementations18 Sep 2020 Ozan Ozyegen, Igor Ilic, Mucahit Cevik

In this study, we propose two novel evaluation metrics for time series forecasting: Area Over the Perturbation Curve for Regression and Ablation Percentage Threshold.

BIG-bench Machine Learning Multivariate Time Series Forecasting +2

An empirical study on using CNNs for fast radio signal prediction

no code implementations16 Jun 2020 Ozan Ozyegen, Sanaz Mohammadjafari, Karim El mokhtari, Mucahit Cevik, Jonathan Ethier, Ayse Basar

We compare deep learning-based prediction models including RadioUNET and four different variations of the UNET model for the power prediction task.

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