Hacaloğlu, Tuna

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https://hdl.handle.net/20.500.14411/7244
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Hacaloğlu,T.
H.,Tuna
T., Hacaloğlu
T.,Hacaloğlu
Hacaloglu, Tuna
Tuna, Hacaloğlu
Hacaloglu,T.
T., Hacaloglu
H., Tuna
Tuna, Hacaloglu
T.,Hacaloglu
Hacaloğlu, Tuna
Hacaloglu T.
Job Title
Doktor Öğretim Üyesi
Email Address
tuna.hacaloglu@atilim.edu.tr
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Information Systems Engineering
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56422190200
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WoS Researcher ID
KHJ-3791-2024

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153

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265

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IEEE Software2
CEUR Workshop Proceedings -- Joint of the 33rd International Workshop on Software Measurement and the 18th International Conference on Software Process and Product Measurement, IWSM-MENSURA 2024 -- 30 September 2024 through 4 October 2024 -- Montreal -- 2044672
18th IFIP WG 6.11Conference on e-Business, e-Services, and e-Society (I3E) -- SEP 18-20, 2019 -- Norwegian Univ Sci & Technol, Fac Informat Technol & Elect Engn, Dept Comp, Trondheim, NORWAY1
45th Euromicro Conference on Software Engineering and Advanced Applications (SEAA) / 22nd Euromicro Conference on Digital System Design (DSD) -- AUG 28-30, 2019 -- Kallithea, GREECE1
48th Euromicro Conference on Software Engineering and Advanced Applications -- AUG 31-SEP 02, 2022 -- SPAIN1
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Now showing 1 - 10 of 14
  • Thumbnail Image
    Conference Object
    Citation - WoS: 7
    Citation - Scopus: 12
    Utilization of Three Software Size Measures for Effort Estimation in Agile World: A Case Study
    (IEEE, 2022) Unlu, Huseyin; Hacaloglu, Tuna; Buber, Fatma; Berrak, Kivilcim; Leblebici, Onur; Demirors, Onur
    Functional size measurement (FSM) methods, by being systematic and repeatable, are beneficial in the early phases of the software life cycle for core project management activities such as effort, cost, and schedule estimation. However, in agile projects, requirements are kept minimal in the early phases and are detailed over time as the project progresses. This situation makes it challenging to identify measurement components of FSM methods from requirements in the early phases, hence complicates applying FSM in agile projects. In addition, the existing FSM methods are not fully compatible with today's architectural styles, which are evolving into event-driven decentralized structures. In this study, we present the results of a case study to compare the effectiveness of different size measures: functional -COSMIC Function Points (CFP)-, event-based - Event Points-, and code length-based - Line of Code (LOC)- on projects that were developed with agile methods and utilized a microservice- based architecture. For this purpose, we measured the size of the project and created effort estimation models based on three methods. It is found that the event-based method estimated effort with better accuracy than the CFP and LOC-based methods.
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    Software Change Size Measurement: an Exploratory Systematic Mapping Study
    (CEUR-WS, 2024) Hacaloglu, T.; Küçükateş Ömüral, N.; Kılınç Soylu, G.; Demirörs, O.
    Change in software projects can occur through various channels. Customers may request modifications or new features; appraisal activities such as reviews or testing may uncover issues that necessitate adjustments, or products may need to adapt to changes in their operating environment. Therefore, it is essential to assess these changes explicitly and objectively within the scope of software engineering activities. Specifically, quantifying change by measuring its size is crucial for successful management, as without a meaningful metric, it is impossible to accurately assess its impact on the project's effort, schedule, and cost. This study aims to explore the concept of change in software engineering literature, with a particular emphasis on the methods used to measure its size. The study reveals that the current literature on this topic is still in its early stages and the measurement and estimation of changes remain challenging throughout both development and maintenance phases. According to the reviewed articles, size is primarily used for effort estimation. Various software artifacts from different stages of the Software Development Life Cycle (SDLC) serve as input for change measurement, highlighting the need for a versatile size measurement applicable across all SDLC phases. Most of the reviewed articles interpret change in the context of maintenance activities. This research sets a benchmark for the status of software size measures for software change and highlights related problems to suggest further research topics. © 2024 Copyright for this paper by its authors.
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    Citation - Scopus: 1
    A Survey on Cosmic Students Estimation Challenge
    (CEUR-WS, 2022) Hacaloglu,T.; Say,B.; Unlu,H.; Omural,N.K.; Demirors,O.
    Software project management is a significant software engineering practice that is highly related to achieving software-specific project goals. This study aims to share students’ perceptions of incorporating an international software estimation challenge called “COSMIC Students’ Estimation Challenge” into a software project management course. For this aim, students were taught the COSMIC Functional Size Measurement method and entered the competition. After the competition, a questionnaire asking for the students’ opinions was collected. The objective of the research is to get an insight into to what extent incorporating this type of competition activity -a challenge- can contribute to students’ learning perceptions. In the long run, the findings can contribute to creating a foresight about making the necessary curriculum arrangements to form a more up-to-date and dynamic education plan by including the methods applied in the software industry in Software Engineering education. The results suggest that this kind of competition experience and preparation is helpful for students to learn the COSMIC method. © 2020 Copyright for this paper by its authors.
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    Citation - Scopus: 8
    An Exploratory Case Study on Effort Estimation in Microservices
    (Institute of Electrical and Electronics Engineers Inc., 2023) Unlu,H.; Hacaloglu,T.; Omural,N.K.; Caliskanel,N.; Leblebici,O.; Demirors,O.
    Software project management plays an important role in producing high-quality software, and effort estimation can be considered as a backbone for successful project management. Size is a very significant attribute of software by being the only input to perform early effort estimation. Even though functional size measurement methods showed successful results in effort estimation of traditional data-centric architectures such as monoliths, they were not designed for today's architectures which are more service-based and decentralized such as microservices. In these new systems, the event concept is highly used specifically for communication among different services. By being motivated by this fact, in this study, we looked for more microservice-compatible ways of sizing microservices using events and developed a method accordingly. Then, we conducted an exploratory case study in an organization using agile methods and measured the size of 17 Product Backlog Items (PBIs) to assess how this proposed method can be useful in effort estimation in microservices. The implication from the case study is that despite performing a more accurate effort estimation using the proposed size measurement than COSMIC, we were unable to significantly outperform using the total number of events. However, our suggested approach demonstrated to us a different way to use software size in terms of events, namely, to determine the coupling complexity of the project. This finding can be beneficial specifically when evaluating the change requests. © 2023 IEEE.
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    Cosmic Light Vs Cosmic Classic Manual: Case Studies in Functional Size Measurement
    (CEUR-WS, 2020) Hacaloglu,T.; Unlu,H.; Demirors,O.; Abran,A.
    Functional size has been used in software engineering for more than 40 years. When measured early in the software development life cycle, it can serve as direct input for effort estimation. The COSMIC Functional Size Measurement (FSM) method developed by the Common Software Measurement Consortium (COSMIC) is the latest ISO-compliant functional sizing method. A streamlined manual titled ''Software Development Velocity with COSMIC Function Points'' summarizes the measurement process and shortens the learning time. The aim of this study is to compare the classic COSMIC FSM manual and this new “light” manual in terms of accuracy of the resulting FSM applied to case studies. The findings show that use of the light manual results in accurate measurement. In addition, there were no significant time differences between the two. With respect to the variations in COSMIC Function Points (CFP) values in the two case studies, they three causes were identified: the Object of Interest (OOI) concept and corresponding data groups, details regarding Functional Process Independence, and Error/Confirmation messages related to the scope of the information included in the manuals. Copyright © 2020 for this paper by its authors.
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    Article
    Citation - WoS: 3
    Citation - Scopus: 6
    An Exploratory Case Study Using Events as a Software Size Measure
    (Springer, 2023) Hacaloglu, Tuna; Demirors, Onur
    Software Size Measurement is a critical task in Software Development Life Cycle (SDLC). It is the primary input for effort estimation models and an important measure for project control and process improvement. There exist various size measurement methods whose successes have already been proven for traditional software architectures and application domains. Being one of them, functional size measurement (FSM) attracts specific attention due to its applicability at the early phases of SDLC. Although FSM methods were successful on the data-base centric, transaction oriented stand-alone applications, in contemporary software development projects, Agile methods are highly used, and a centralized database and a relational approach are not used as before while the requirements suffer from a lack of detail. Today's software is frequently service based, highly distributed, message-driven, scalable and has unprecedented levels of availability. In the new era, event-driven architectures are appearing as one of the emerging approaches where the 'event' concept largely replaces the 'data' concept. Considering the important place of events in contemporary architectures, we focused on approaching the software size measurement problem from the event-driven perspective. This situation guided us to explore how useful event as a size measure in comparison to data-movement based methods. The findings of our study indicates that events can be promising for measurement and should be investigated further in detail to be formalized for creating a measurement model thereby providing a replicable approach.
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    Article
    Citation - WoS: 6
    Citation - Scopus: 8
    Software Size Measurement: Bridging Research and Practice
    (Ieee Computer Soc, 2024) Hacaloglu, Tuna; Unlu, Huseyin; Yildiz, Ali; Demirors, Onur
    This study investigates the limited adoption of functional size measurement methods in the software development industry. Using insights from firms experienced in size measurement, it aims to uncover industry expectations and facilitate the translation of theoretical methodologies into practical applications.
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    Citation - Scopus: 21
    Examining the Use of Non-Fungible Tokens (nfts) as a Trading Mechanism for the Metaverse
    (Springer Science and Business Media Deutschland GmbH, 2022) Yilmaz,M.; Hacaloğlu,T.; Clarke,P.
    The notion of a metaverse seems hard to define but encourages the impression that it can be considered as a new virtual metaphysical landscape that somehow goes beyond our geographical locations and understanding (i.e., independent of time and space). Based on virtual reality, augmented reality, and blockchain, it is envisioned as an independent but extended world that is planned to be a digital virtuality entrenched not only in our old habits such as gaming and entertainment but also in virtual asset trade. In particular, trading is a pillar of the virtual economy, and auction houses will be crucial for Metaverse trading. This exploratory study examines the possibility of using an auction environment to improve the trading capabilities in a virtual universe. We investigate the cases of creating a virtual auction house with the potential of social trading of virtual assets with crypto coins and bartering. To this end, we built a virtual auction house and tested it initially using a set of scenarios. Our preliminary findings suggest that creating a virtual trading environment would be beneficial as an environment for buying and selling virtual assets and exploring their consequences. © 2022, Springer Nature Switzerland AG.
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    Exploratory Review of Quantum Computing Software Requirements Specification and Their Measurement
    (CEUR-WS, 2024) Hacaloglu, T.; Soubra, H.; Bourque, P.
    Quantum software sets itself apart from classical software owing to its powerful computational abilities rooted in entanglement and superposition. Unlike classical software, quantum software diverges notably across various dimensions, including computational models, hardware architectures, algorithms, deployment platforms, and problem domains. Quantum software is also often not standalone and interacts heavily with classical software, stressing the importance of carefully considering hybridization. From a software engineering standpoint, researchers generally agree that a different approach is required for quantum software, and they advocate a Quantum Software Development Life Cycle (SDLC). This exploratory study briefly outlines the specifics of quantum software, overviews the proposed approaches regarding the software requirements of quantum software, and then reviews the current alternatives for measuring the functional size of quantum software. This study indicates that only a few papers in the literature discuss the requirements and functional size measurements of quantum software. Their results are also mostly conceptual and have not yet been empirically validated. Functional size measurement using quantum software remains an open area for further research. © 2024 Copyright for this paper by its authors.
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    Citation - WoS: 3
    Citation - Scopus: 4
    Effort Prediction for Microservices: a Case Study
    (Ieee, 2021) Unlu, Huseyin; Hacaloglu, Tuna; Leblebici, Onur; Demirors, Onur
    Software size measurement is critical as an input to perform important project management processes such as effort, cost and schedule estimation. Functional size measurement (FSM) methods are beneficial in terms of being applicable in the early phases of the software life cycle over functional requirements and providing a systematic and repeatable method. However, in agile organizations, it can be challenging to seperate measurement components of FSM methods from requirements in the early phases as the documentation is kept to a minimum compared to traditional methods such as the Waterfall Model and is detailed as the project steps. In addition, the existing FSM methods are not fully compatible with today's architectural structures, which are from being data-driven and to evolve into a behaviour-oriented structure. In this study, we performed a case study which includes a project developed with agile methods and using microservice-based architecture to compare the effectiveness of COSMIC FSM and event-based software size measurement. For this purpose, we measured the size of the project and created effort estimation models based on two methods. The measurers had difficulty in applying both methods due to the limited detail level of the requirements in the project. However, the event-based method was found to estimate effort with less error than the COSMIC FSM method.