Browsing by Author "Yel, Ibrahim"

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Requirements-Team Assignment Model That Ensures Balanced Workload With Differences in Skills in Agile Organizations
(Springer International Publishing Ag, 2024) Yel, Ibrahim; Baysa, Mehmet Emin; Sarucan, Ahmet
In today's world of information technologies, agile transformations aim to evaluate small requirements and present them to customers in small deliveries in a short time. The requirement items included in the sprints are scored by the agile team and Story Points are assigned. The expectation from the agile team is that after each requirement is finalized, the other requirements within the sprint will be developed by team members with a proactive approach. At this stage, developing the right requirements by the right team and at the same time distributing the workload within the team balanced can be a serious problem that needs to be solved by people in the product owner role and people in the Scrum master role. By distributing balanced story points among team members and assigning the most appropriate requirements to them, the team's performance and customer satisfaction will increase. In this context, the determined criterion weights were defined with fuzzy AHP. Afterwards, the requirements were evaluated by five experts in the field. The evaluation criteria of the teams corresponding to the requirement criteria were used by the same experts to evaluate the teams. A balanced assignment of requirements story points to each team was made based on the differences between the final scores of the requirements and the final scores of the teams. This assignment process was tried with both (Neutrosophic Z Number Set) NZN and NZN-Area Ellipse methods and the results were compared.
Use of Shifting Bottleneck Metaheuristic Algorithm and NZN-Area Method in Priority Assignment in Agile IT Teams: A Study on Ambiguous Priority Relationships
(Springer International Publishing AG, 2025) Kaplan, Busra; Yel, Ibrahim; Baysal, Mehmet Emin; Sarucan, Ahmet
Assigning priority in agile IT teams can be particularly challenging when dealing with uncertain priority relationships between Product Backlog Items (PBIs) and findings received within a sprint. The Shifting Bottleneck metaheuristic algorithm is crucial in this context, as it helps identify and address bottlenecks that can move from one part of the process to another, impacting the overall workflow. By focusing on the shifting bottleneck, teams can dynamically adjust their priorities to tackle the most pressing issues first, ensuring a steady pace and continuous delivery of value. The Neutrosophic Z Number Set's-Area (NZNArea) method complements this approach by visually identifying which tasks should be prioritized, helping to balance the workload and ensure that high-impact tasks are not overlooked. This method provides a structured approach to prioritize tasks, considering various factors with fuzzy AHP such as urgency, business value, resource availability, external dependency and importance. By integrating the Shifting Bottleneck algorithm with the NZN-Area: Ellipse method for prioritization. Agile IT teams can make more informed and nuanced decisions on task prioritization, addressing the most critical tasks first and maintaining efficiency despite the inherent uncertainties in priority relationships. By using multi-criteria decision-making methods and metaheuristic assignment method in PBI prioritization of agile working teams, an 8.6% improvement was achieved in the completion time of intra-sprint PBIs between the existing method and the proposed method.