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9th International Conference on Dependability and Complex Systems (DepCoS-RELCOMEX)

作者： Hnatkowska, Bogumila Jaszczak, Anna Wroclaw Univ Technol Inst Informat PL-50370 Wroclaw Poland

ISBN: (纸本)9783319070131

Source code maintainability is a desired software feature. It can be achieved in many different ways. For example, software engineers recommend the use of patterns as commonly known and proven quality solutions to existing problems. patterns are usually defined at three basic granularity levels, and are classified as architectural, design, and programming patterns (idioms). The paper presents the results of an experiment conducted at Wroclaw University of Technology which aimed at checking the influence of Java idioms on source code maintainability. The obtained results confirmed that using idioms is a beneficial practice, especially in corrective maintenance.

关键词： java maintainability evaluation programming patterns

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Using GitHub Copilot to Solve Simple programming Problems 2023

Using GitHub Copilot to Solve Simple Programming Problems

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54th Annual ACM SIGCSE Technical Symposium on Computer Science Education (SIGCSE TS)

作者： Wermelinger, Michel Open Univ Sch Comp & Commun Milton Keynes Bucks England

ISBN: (纸本)9781450394314

The teaching and assessment of introductory programming involves writing code that solves a problem described by text. Previous research found that OpenAI's Codex, a natural language machine learning model trained on billions of lines of code, performs well on many programming problems, often generating correct and readable Python code. GitHub's version of Codex, Copilot, is freely available to students. This raises pedagogic and academic integrity concerns. Educators need to know what Copilot is capable of, in order to adapt their teaching to AI-powered programming assistants. Previous research evaluated the most performant Codex model quantitatively, e.g. how many problems have at least one correct suggestion that passes all tests. Here I evaluate Copilot instead, to see if and how it differs from Codex, and look qualitatively at the generated suggestions, to understand the limitations of Copilot. I also report on the experience of using Copilot for other activities asked of students in programming courses: explaining code, generating tests and fixing bugs. The paper concludes with a discussion of the implications of the observed capabilities for the teaching of programming.

关键词： code generation test generation code explanation programming exercises programming patterns novice programming introductory programming academic integrity OpenAI Codex

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A Rapid Prototyping Approach for High Performance Density-Based Clustering 6

A Rapid Prototyping Approach for High Performance Density-Ba...

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6th IEEE International Conference on Data Science and Advanced Analytics (DSAA)

作者： Islam, Saiyedul Balasubramaniam, Sundar Goyal, Poonam Sultana, Ankit Bhutani, Lakshit Raje, Saurabh Goyal, Navneet Birla Inst Technol & Sci Pilani Adv Data Analyt & Parallel Technol Lab Dept Comp Sci & Informat Syst Pilani Campus Pilani Rajasthan India

ISBN: (纸本)9781728144931

Big Data has significantly increased the dependence of data analytics community on High Performance Computing (HPC) systems. However, efficiently programming an HPC system is still a tedious task requiring specialized skills in parallelization and the use of platform-specific languages as well as mechanisms. We present a framework for quickly prototyping new/existing density-based clustering algorithms while obtaining low running times and high speedups via automatic parallelization. The user is required only to specify the sequential algorithm in a Domain Specific Language (DSL) for clustering at a very high level of abstraction. The parallelizing compiler for the DSL does the rest to leverage distributed systems in particular, typical scale-out clusters made of commodity hardware. Our approach is based on recurring, parallelizable programming patterns known as Kernels, which are identified and parallelized by the compiler. We demonstrate the ease of programming and scalable performance for DBSCAN, SNN, and RECOME algorithms. We also establish that the proposed approach can achieve performance comparable to state-of-the-art manually parallelized implementations while requiring minimal programming effort that is several orders of magnitude smaller than those required on other parallel platforms like MPI/Spark.

关键词： Clustering Domain Specific Language Big Data Engineering programming patterns Parallelizing Compiler

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On the Usefulness of Animated Structograms in Teaching Algorithms and programming 12th

On the Usefulness of Animated Structograms in Teaching Algor...

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12th International Conference on Interactive Mobile Communication Technologies and Learning (IMCL)

作者： Doering, Ulf Artelt, Benedikt Tech Univ Ilmenau Ilmenau Germany

ISBN: (纸本)9783030114343;9783030114336

This document describes an online tool, which supports different synchronized views onto the same algorithm in parallel, e.g. structograms (Nassi-Shneiderman diagrams), Java code and the state of used variables. It can also animate the program and data flow. This is essential for self-controlled learning especially for novice programmers. Students can focus on the view they prefer and explore the relationship to the other views at their own speed, e.g. by stepping through the program and visualize the current state of the variables as well as the console output. The tool gives the possibility to modify the structure as well as the texts in the structograms. It supports exports into different file formats, i.e. for the creation of teaching material or solutions for exercises. The HTML5 implementation allows easy access to the tool on different platforms as well as its integration into web-based learning environments.

关键词： Browser-based e-learning tool Program visualization programming patterns Multiple-views synchronization Levels of abstraction Java HTML5

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Is it feasible to teach query programming in three different languages in a single session? A study on a pattern-oriented tutorial and cheat sheets 19

Is it feasible to teach query programming in three different...

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1st Conference on United Kingdom & Ireland Computing Education Research (UKICER)

作者： Sundin, Lovisa Cutts, Quintin Univ Glasgow Glasgow Scotland

ISBN: (纸本)9781450372572

Undergraduates and postgraduates in science subjects are increasingly expected to conduct their data analyses using R, SQL and Python. This requires of instructors to develop resources that get students up and running quickly. This study presents and evaluates a learning design that (1) uses a pattern-oriented tutorial to teach language-independent key operations for implementing data analytic queries, and (2) uses cheat sheets to show how these operations map onto language-specific syntax. The evaluation study (N=21) concludes that using this approach, two thirds of the data science novices sampled could implement simple to moderately complex queries in all the aforementioned languages within two hours. A permutation test moreover produced a significant main effect of language, with SQL ranking the highest in accuracy. The results form part of a general discussion on the merits and language-dependent feasibility of pattern-oriented aids for accelerated data science instruction.

关键词： data science programming instruction programming patterns programming schemas query visualisation CS education R SQL Python

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Evaluating the Use of Remixing in Scratch Projects Based on Repertoire, Lines of Code (LOC), and Elementary patterns 49

Evaluating the Use of Remixing in Scratch Projects Based on ...

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49th IEEE Frontiers in Education Conference (FIE)

作者： Amanullah, Kashif Bell, Tim Univ Canterbury Dept Comp Sci Christchurch New Zealand

ISBN: (纸本)9781728117461

This Full Paper in the Research Category evaluates the use of remixing in Scratch. A feature of the Scratch programming environment is that it supports students to share their code and "remix" (modify) other students' code. Remixing in Scratch has garnered much attention by the research community as use of collaboration for learning was one of the main ideas behind Scratch. It can provide opportunities to read others' code, learn how features can be implemented using the Scratch language, and contribute to the program. It can also prevent students from engaging with the code if they copy an existing program that does what they are trying to do without needing modification. The literature shows mixed results regarding use of remixes in Scratch. We have investigated at a large scale what happens in practice by analysing thousands of student programs shared through the Scratch online repository. As well as replicating prior work on a larger scale to show the impact of remixing on learning programming skills through Lines of Code (LOC) and repertoire of block usage, we also measure the use of elementary patterns (common combinations of commands). We track the progress of each project through its remixes and compare the results between the root version and the final version.

关键词： programming patterns Scratch primary school students

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Discriminating programming Strategies in Scratch - Making the Difference between Novice and Experienced Programmers 19

Discriminating Programming Strategies in Scratch - Making th...

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14th Workshop on Primary and Secondary Computing Education (WiPSCE)

作者： Kesselbacher, Max Bollin, Andreas Univ Klagenfurt Klagenfurt Austria

ISBN: (纸本)9781450377041

Nowadays, block-based programming environments are often used to offer a gentle introduction to learning a programming language. However, an assessment of students' programming skills based on the results of a programming task is not sufficient to determine all areas students are struggling with. We therefore introduce a learning analytics approach of measuring and evaluating the programming sequences of students that program with Scratch 3. With our measurement framework, it is possible to record, store and analyze programming sequences done on a publicly-available, instrumented Scratch 3 environment. Changes in the programming sequence are categorized regarding the used block types and types of program change. We conducted an exploratory programming trial with lower and upper secondary school students to investigate small-scale programming strategies in the recorded programming sequences. Our goals are to identify students in need of support and to identify recurring patterns used by students successful in the trial. Clustering with k-means makes it possible to identify struggling students based on both interacted block types and types of program changes. Recurring patterns in the programming sequences of successful students show that small-scale programming strategies are very diverse.

关键词： block-based programming learning analytics programming patterns

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Teaching Resources for Young Programmers: the use of patterns

Teaching Resources for Young Programmers: the use of Pattern...

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IEEE Frontiers in Education Conference (FIE)

作者： Amanullah, Kashif Bell, Tim Univ Canterbury Dept Comp Sci Christchurch New Zealand

ISBN: (纸本)9781728189611

This Full Paper in the Research Category identifies and evaluates teaching resources suitable for teaching younger students using the Scratch and Python programming languages. Choosing suitable resources to introduce programming to children is a balance between making sure they are appropriate to their skills such as literacy and numeracy, and are motivating in their social context. Resources need to strike a balance between allow early success, but also introduce genuine programming skills, so that students can progress their programming skills rather than repeating simple tasks over and over. An important element is the choice of teaching resources used to support students' learning. We propose using elementary programming patterns as a measure of how comprehensive a teaching resource for programming is. Note that this doesn't mean advocating that students should be pressed to learn advanced patterns quickly, but it does provide a measure of how deeply a particular resource covers general programming concepts. We identify a set of patterns that are relevant to basic programming practice, and have analyzed some recommended online teaching resources and a small sample of introductory programming books for Scratch and Python against this set of patterns. The use of given set of patterns was relatively low, but some resources did introduce a range of patterns, and some new patterns emerged from the analysis that seemed to be used frequently in Scratch.

关键词： programming patterns Scratch primary school students

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Mastering C# Concurrency 1

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2015年

作者： Eugene Agafonov Andrew Koryavchenko

ISBN: (数字)9781785280078

ISBN: (纸本)9781785286650

If you are a C# developer who wants to develop modern applications in C#, and wants to overcome problems by using asynchronous APIs and standard patterns, then this book is ideal for you. A reasonable knowledge of development, an understanding of core elements and applications related to the .NET platform, and also an understanding of the fundamentals of concurrency are assumed.

关键词： parallel programming in c# asynchronous programming in c# c# thread synchronization multi thread in c# c# multithreading tutorial muC# Task Parallel Library concurrency multi-threading asynchronous applications programming patterns .NET applications

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Reusable Solutions for Implementing Usability Functionalities

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INTERNATIONAL JOURNAL OF SOFTWARE ENGINEERING AND KNOWLEDGE ENGINEERING 2015年第4期25卷 727-755页

作者： Rodriguez, Francy D. Acuna, Silvia T. Juristo, Natalia Univ Politecn Madrid Escuela Tecn Super Ingn Informat E-28660 Madrid Spain Univ Autonoma Madrid Dept Ingn Informat E-28049 Madrid Spain

Usability is a software system quality attribute. Although software engineers originally considered usability to be related exclusively to the user interface, it was later found to affect the core functionality of software applications. As of then, proposals for addressing usability at different stages of the software development cycle were researched. The objective of this paper is to present three reusable solutions at detailed design and programming level in order to effectively implement the Abort Operation, Progress Feedback and Preferences usability functionalities in web applications. To do this, an inductive research method was applied. We developed three web applications including the above usability functionalities as case studies. We looked for commonalities across the implementations in order to induce a general solution. The elements common to all three developed applications include: application scenarios, functionalities, responsibilities, classes, methods, attributes and code snippets. The findings were specified as an implementation-oriented design pattern and as programming patterns in three languages. Additional case studies were conducted in order to validate the proposed solution. The independent developers used the patterns to implement different applications for each case study. As a result, we found that solutions specified as patterns can be reused to develop web applications.

关键词： Software engineering programming patterns design patterns usability

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