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Leonel Merino

Leonel Merino

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Publikationen:

2020
1. Merino, Leonel ; Sotomayor-Gómez, Boris ; Yu, Xingyao ; Salgado, Ronie ; Bergel, Alexandre ; Sedlmair, Michael ; Weiskopf, Daniel: Toward Agile Situated Visualization: An Exploratory User Study. In: Proceedings of the CHI Conference on Human Factors in Computing Systems-Extended Abstracts (CHI-EA), Proceedings of the CHI Conference on Human Factors in Computing Systems-Extended Abstracts (CHI-EA), 2020 — ISBN 9781450368193, S. LBW087:1–LBW087:7
  - BibTeX
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  BibTeX
  @inproceedings{10.1145/3334480.3383017, abstract = {We introduce AVAR, a prototypical implementation of an agile situated visualization (SV) toolkit targeting liveness, integration, and expressiveness. We report on results of an exploratory study with AVAR and seven expert users. In it, participants wore a Microsoft HoloLens device and used a Bluetooth keyboard to program a visualization script for a given dataset. To support our analysis, we (i) video recorded sessions, (ii) tracked users' interactions, and (iii) collected data of participants' impressions. Our prototype confirms that agile SV is feasible. That is, liveness boosted participants' engagement when programming an SV, and so, the sessions were highly interactive and participants were willing to spend much time using our toolkit (i.e., median ≥ 1.5 hours). Participants used our integrated toolkit to deal with data transformations, visual mappings, and view transformations without leaving the immersive environment. Finally, participants benefited from our expressive toolkit and employed multiple of the available features when programming an SV.}, author = {Merino, Leonel and Sotomayor-G\'{o}mez, Boris and Yu, Xingyao and Salgado, Ronie and Bergel, Alexandre and Sedlmair, Michael and Weiskopf, Daniel}, booktitle = {Proceedings of the CHI Conference on Human Factors in Computing Systems-Extended Abstracts (CHI-EA)}, doi = {10.1145/3334480.3383017}, isbn = {9781450368193}, numpages = {7}, pages = {LBW087:1–LBW087:7}, title = {Toward Agile Situated Visualization: An Exploratory User Study}, url = {https://dl.acm.org/doi/abs/10.1145/3334480.3383017}, year = 2020 }
  Link
  https://dl.acm.org/doi/abs/10.1145/3334480.3383017
2. Dias, Martin ; Orellana, Diego ; Vidal, Santiago ; Merino, Leonel ; Bergel, Alexandre: Evaluating a Visual Approach for Understanding JavaScript Source Code. In: Proceedings of the 28th International Conference on Program Comprehension, Proceedings of the 28th International Conference on Program Comprehension : ACM, 2020, S. 128–138
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  @inproceedings{noauthororeditor, abstract = {To characterize the building blocks of a legacy software system (e.g., structure, dependencies), programmers usually spend a long time navigating its source code. Yet, modern integrated development environments (IDEs) do not provide appropriate means to efficiently achieve complex software comprehension tasks. To deal with this unfulfilled need, we present Hunter, a tool for the visualization of JavaScript applications. Hunter visualizes source code through a set of coordinated views that include a node-link diagram that depicts the dependencies among the components of a system, and a treemap that helps programmers to orientate when navigating its structure. In this paper, we report on a controlled experiment that evaluates Hunter. We asked 16 participants to solve a set of software comprehension tasks, and assessed their effectiveness in terms of (i) user performance (i.e., completion time, accuracy, and attention), and (ii) user experience (i.e., emotions, usability). We found that when using Hunter programmers required significantly less time to complete various software comprehension tasks and achieved a significantly higher accuracy. We also found that the node-link diagram panel of Hunter gets most of the attention of programmers, whereas the source code panel does so in Visual Studio Code. Moreover, programmers considered that Hunter exhibits a good user experience.}, author = {Dias, Martin and Orellana, Diego and Vidal, Santiago and Merino, Leonel and Bergel, Alexandre}, booktitle = {Proceedings of the 28th International Conference on Program Comprehension}, doi = {https://doi.org/10.1145/3387904.3389275}, month = {07}, pages = {128-138}, publisher = {ACM}, title = {Evaluating a Visual Approach for Understanding JavaScript Source Code}, url = {http://bergel.eu/MyPapers/Dias20-Hunter.pdf}, year = 2020 }
  Link
  http://bergel.eu/MyPapers/Dias20-Hunter.pdf
3. Patkar, Nitish ; Merino, Leonel ; Nierstrasz, Oscar: Towards Requirements Engineering with Immersive Augmented Reality. In: Conference Companion of the 4th International Conference on Art, Science, and Engineering of Programming, Conference Companion of the 4th International Conference on Art, Science, and Engineering of Programming. Porto, Portugal : ACM, 2020 — ISBN 9781450375078, S. 55–60
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  @inproceedings{10.1145/3397537.3398472, abstract = {Often, requirements engineering (RE) activities demand project stakeholders to communicate and collaborate with each other towards building a common software product vision. We conjecture that augmented reality (AR) can be a good fit to support such communication and collaboration. In this vision paper, we report on state-of-the-art research at the intersection of AR and RE. We found that requirements elicitation and analysis have been supported by the ability of AR to provision on-the-fly information such as augmented prototypes. We discuss and map the existing challenges in RE to the aspects of AR that can boost the productivity and user experience of existing RE techniques. Finally, we elaborate on various envisioned usage scenarios in which we highlight concrete benefits and challenges of adopting immersive AR to assist project stakeholders in RE activities.}, address = {New York, NY, USA}, author = {Patkar, Nitish and Merino, Leonel and Nierstrasz, Oscar}, booktitle = {Conference Companion of the 4th International Conference on Art, Science, and Engineering of Programming}, doi = {10.1145/3397537.3398472}, isbn = {9781450375078}, location = {Porto, Portugal}, numpages = {6}, pages = {55–60}, publisher = {ACM}, series = { '20}, title = {Towards Requirements Engineering with Immersive Augmented Reality}, url = {https://doi.org/10.1145/3397537.3398472}, year = 2020 }
  Link
  https://doi.org/10.1145/3397537.3398472
4. Chotisarn, Noptanit ; Merino, Leonel ; Zheng, Xu ; Lonapalawong, Supaporn ; Zhang, Tianye ; Xu, Mingliang ; Chen, Wei: A Systematic Literature Review of Modern Software Visualization. In: Journal of Visualization, Journal of Visualization. Bd. 23 (2020), Nr. 4, S. 539--558
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  @article{chotisarn2020systematic, abstract = {We report on the state-of-the-art of software visualization.To ensure reproducibility, we adopted the Systematic Literature Review methodology. That is, we analyzed 1440 entries from IEEE Xplore and ACM Digital Library databases. We selected 105 relevant full papers published in 2013–2019, which we classified based on the aspect of the software system that is supported (i.e., structure, behavior, and evolution). For each paper, we extracted main dimensions that characterize software visualizations, such as software engineering tasks, roles of users, information visualization techniques, and media used to display visualizations. We provide researchers in the field an overview of the state-of-the-art in software visualization and highlight research opportunities. We also help developers to identify suitable visualizations for their particular context by matching software visualizations to development concerns and concrete details to obtain available visualization tools.}, author = {Chotisarn, Noptanit and Merino, Leonel and Zheng, Xu and Lonapalawong, Supaporn and Zhang, Tianye and Xu, Mingliang and Chen, Wei}, doi = {10.1007/s12650-020-00647-w}, issn = {18758975}, journal = {Journal of Visualization}, number = 4, pages = {539--558}, refid = {Chotisarn2020}, title = {A Systematic Literature Review of Modern Software Visualization}, url = {https://link.springer.com/article/10.1007%2Fs12650-020-00647-w}, volume = 23, year = 2020 }
  Link
  https://link.springer.com/article/10.1007%2Fs12650-020-00647-w
5. Okanovic, Dusan ; Beck, Samuel ; Merz, Lasse ; Zorn, Christoph ; Merino, Leonel ; van Hoorn, Andre ; Beck, Fabian: Can a Chatbot Support Software Engineers with Load Testing? Approach and Experiences. In: Proceedings of the ACM/SPEC International Conference on Performance Engineering (ICPE), Proceedings of the ACM/SPEC International Conference on Performance Engineering (ICPE), 2020. — Accepted, S. 120–129
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  @inproceedings{OkanovicBeckMerzZornMerinoVanHoornBeck2020CanAChatbotSupportSoftwareEngineersWithLoadTestingApproachAndExperiences, abstract = {Even though load testing is an established technique to assess load-related quality properties of software systems, it is applied only seldom and with questionable results. Indeed, configuring, executing, and interpreting results of a load test require high effort and expertise. Since chatbots have shown promising results for interactively supporting complex tasks in various domains (including software engineering), we hypothesize that chatbots can provide developers suitable support for load testing. In this paper, we present PerformoBot, our chatbot for configuring and running load tests. In a natural language conversation, PerformoBot guides developers through the process of properly specifying the parameters of a load test, which is then automatically executed by PerformoBot using a state-of-the-art load testing tool. After the execution, PerformoBot provides developers a report that answers the respective concern. We report on results of a user study that involved 47 participants, in which we assessed our tool's acceptance and effectiveness. We found that participants in the study, particularly those with a lower level of expertise in performance engineering, had a mostly positive view of PerformoBot.}, author = {Okanovic, Dusan and Beck, Samuel and Merz, Lasse and Zorn, Christoph and Merino, Leonel and van Hoorn, Andre and Beck, Fabian}, booktitle = {Proceedings of the ACM/SPEC International Conference on Performance Engineering (ICPE)}, doi = {10.1145/3358960.3375792}, note = {Accepted}, pages = {120-129}, title = {Can a Chatbot Support Software Engineers with Load Testing? Approach and Experiences}, url = {https://doi.org/10.1145/3358960.3375792}, year = 2020 }
  Link
  https://doi.org/10.1145/3358960.3375792
2017
1. Merino, Leonel ; Fuchs, Johannes ; Blumenschein, Michael ; Anslow, Craig ; Ghafari, Mohammad ; Nierstrasz, Oscar ; Behrisch, Michael ; Keim, Daniel A.: On the Impact of the Medium in the Effectiveness of 3D Software Visualizations. In: Proceedings of the IEEE Working Conference on Software Visualization (VISSOFT), Proceedings of the IEEE Working Conference on Software Visualization (VISSOFT) : IEEE, 2017, S. 11–21
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  @inproceedings{conf/vissoft/MerinoFBAGNBK17, abstract = {Many visualizations have proven to be effective in supporting various software related tasks. Although multiple media can be used to display a visualization, the standard computer screen is used the most. We hypothesize that the medium has a role in their effectiveness. We investigate our hypotheses by conducting a controlled user experiment. In the experiment we focus on the 3D city visualization technique used for software comprehension tasks. We deploy 3D city visualizations across a standard computer screen (SCS), an immersive 3D environment (I3D), and a physical 3D printed model (P3D). We asked twenty-seven participants (whom we divided in three groups for each medium) to visualize software systems of various sizes, solve a set of uniform comprehension tasks, and complete a questionnaire. We measured the effectiveness of visualizations in terms of performance, recollection, and user experience. We found that even though developers using P3D required the least time to identify outliers, they perceived the least difficulty when visualizing systems based on SCS. Moreover, developers using I3D obtained the highest recollection.}, author = {Merino, Leonel and Fuchs, Johannes and Blumenschein, Michael and Anslow, Craig and Ghafari, Mohammad and Nierstrasz, Oscar and Behrisch, Michael and Keim, Daniel A.}, booktitle = {Proceedings of the IEEE Working Conference on Software Visualization (VISSOFT)}, doi = {10.1109/VISSOFT.2017.17}, ee = {http://doi.ieeecomputersociety.org/10.1109/VISSOFT.2017.17}, pages = {11-21}, publisher = {IEEE}, title = {On the Impact of the Medium in the Effectiveness of 3D Software Visualizations}, url = {https://ieeexplore.ieee.org/document/8091182}, year = 2017 }
  Link
  https://ieeexplore.ieee.org/document/8091182

Leonel Merino

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Leonel Merino

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