Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Conference Object Citation - WoS: 3Citation - Scopus: 4Mikroservisler için İşgücü Kestirimi: Bir Durum Çalışması(IEEE, 2021) Ünlü, Hüseyin; Hacaloğlu, Tuna; Leblebici, Onur; Demirörs, OnurSoftware 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.Conference Object Citation - WoS: 4Citation - Scopus: 9Isbsg Veri Seti Kullanılarak Yazılım Efor Kestirimi: Çoklu Durum Çalışmaları(IEEE, 2021) Ünlü, Hüseyin; Yalçın, Ali Görkem; Öztürk, Dilek; Akkaya, Güliz; Kalecik, Mert; Ekici, Nazım Umut; Orhan, Oğuzhan; Çiftçi, Okan; Yumlu, Selen; Demirörs, OnurEfor kestirimi yazılım projelerinin planlanmasında temel aktivitelerden biridir. Objektif, tekrarlanabilir efor kestirimleri genelde iki ana girdiye ihtiyaç duyar: yazılım büyüklüğü ve efor verisi. Yazılımın büyüklüğü fonksiyonel büyüklük olarak ölçüldüğünde projenin gereksinimlerinin tanımlı olmasından sonra her aşamasında ölçülebilir. Ancak, organizasyonlarda geçmiş projelere ait efor verisine her zaman ulaşmak mümkün olamamaktadır. Bu durumda yeni projeler için geçmiş verilerden yola çıkarak efor kestirim modelleri oluşturmak güç olabilir. Uluslararası Yazılım Kıyaslama Standartları Grubu (International Software Benchmarking Standards Group – ISBSG) veri seti dünya çapında birçok organizasyon tarafından sağlanan yazılım büyüklüğü ve efor bilgisi içeren çok sayıda proje bilgisi içerir. Bu veri seti organizasyonlarda efor kestirimi için kullanılabilir. Bu çalışmada, ISBSG veri setinin sektördeki organizasyonlara ait projelerin efor kestiriminde yararlı olup olmadığını araştırmak amacıyla lisansüstü öğrencileri ile çoklu durum çalışması yapılmıştır. Öğrenciler, çalıştıkları organizasyona ait bir projeyi öncelikle COSMIC İşlevsel Büyüklük Ölçüm yöntemi ile ölçmüş, sonrasında da ISBSG veri setini kullanarak efor kestirim modeli oluşturmuş ve projenin efor tahminini gerçekleştirmiştir. Çalışma sonuçları, efor verisi bulunamayan durumlarda ISBSG kullanarak tutarlı bir efor kestirim modelini oluşturmanın mümkün olduğunu göstermektedir.Conference Object Citation - WoS: 1Citation - Scopus: 3Automated Estimation of Functional Size From Code(IEEE, 2020) Özen, Özgesu; Özsoy, Bora; Aktılav, Busenur; Güleç, Eren Can; Demirörs, OnurDetermination of the size of a software project is challenging as well as crucial for both self-employed software developers and corporate businesses. That's why it is subjected to a lot of academic studies where it is discussed how to determine the size more accurately. Functional Size Measurement (FSM) is one the most popular measurement techniques for a software from the point of the delivered functionality. However, the aspects of know-how, the cost, time, and manual operation creates difficulties to apply FSM techniques. This study aims to solve these issues by automating the measurement process to approximate the functional size of a project using the COSMIC Functional Size Measurement. The end product of this study is called 'Cosmic APP' that utilizes the sequence diagram of a software after reverse engineering it from the given code using a third-party tool called 'SequenceDiagram'. The working principles, the estimation process, and the obtained results of 'Cosmic APP' are described thoroughly in this paper. © 2020 IEEE.Conference Object Citation - WoS: 15Citation - Scopus: 20Measureability of Functional Size in Agile Software Projects: Multiple Case Studies With Cosmic Fsm(IEEE, 2019) Hacaloğlu, Tuna; Demirörs, OnurFunctional size measurement (FSM) has been used in software engineering for decades as a main driver for estimation and significant input for other various project management activities throughout the project life span. To apply FSM accurately at the early stages of software development process, especially for estimation purposes, functional user requirements need to be available in detail as required by the adopted FSM method. However, in agile software development, requirement specifications, in general, are kept minimal. For this reason, the adjustment of the requirements to the necessary granularity level has been articulated as one of the barriers preventing the diffusion of FSM practices among agile teams. In this paper, we take a closer look at this problem in order to investigate the usability of FSM and to reveal FSM related challenges empirically through case studies on real agile projects from different software organizations. This study also provides a snapshot of agile organizations in terms of requirement specification and estimation related practices. © 2019 IEEE.