Spelling suggestions: "subject:"comparative evaluation"" "subject:"eomparative evaluation""
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Instrumenteffekt inom användbarhetstestning : Mätinstrumentets påverkan på ett systems användbarhet / Instrument effect within the field of usability testingJansson, Ove January 2013 (has links)
Fältet för användbarhetstestning är fullt av metoder, men av någon anledning är det en väldig brist på studier som jämför metoderna mot varandra och kontrollerar om dessa metoder, som utger sig för att generera samma typ av data, faktiskt är likvärdiga. Denna studie jämförde två användbarhetstestningsmetoder vid namn SUS och PSSUQ. Först jämfördes metodernas metamedelvärde med varandra för att se om det fanns signifikanta skillnader mellan metodernas rådata och sedan utökades analysen till att jämföra metodernas resultat med den normativa mall som respektive metod ger tillgång till. Dessa två olika jämförelser gjordes ett flertal gånger med olika antal försöksdeltagare vid varje iteration. Resultatet av studien visade att inga statistiskt signifikanta skillnader fanns mellan metodernas metavärde (värden transformerade till en skala mellan 0 och 100) och att inga statistiskt signifikanta skillnader hittades mellan dessa två mätinstrument då deras resultat jämfördes mot de normativa mallar som metoderna ger tillgång till, men även om inga statistiskt signifikanta skillnader hittades visar resultatet på en viss skillnad i hur ett system uppfattas beroende på vilken metod som används, vilket innebär att liknande studier borde genomföras.
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A Comparative Evaluation Between Two Design Solutions for an Information DashboardGannholm, Lovisa January 2013 (has links)
This study is a software usability design case about information presentation in a software dashboard. The dashboard is supposed to present system information about an enterprise resource planning system. The study aims to evaluate if the intended users of the dashboard prefer a list-based or an object-based presentation of the information and why. It also investigates if the possibility to get familiar with the prototype affects the evaluation’s result. The study was performed using parallel prototypes and evaluation with users. The use of parallel prototypes is a rather unexplored area. Likewise, little research has been done in the area of how user experience changes over time. Two prototypes were created, presenting the same information in two different design solutions, one list-based, and one object-based. The prototypes were evaluated with ten presumptive users, with respect to usability. The evaluation consisted of two parts, one quantitative and one qualitative. Half of the respondents got a chance to get familiar with the list-based prototype, and half the object-based prototype, after which they evaluated both sequentially. The result of the evaluation showed that seven out of ten respondents preferred the list-based prototype. The two primary reasons were that they are more used to the list-based concept from their work, and that the list-based prototype presented all information about an application at once. In the object-based prototype the user had to make a request for each type of information, which opened up in a new pop-up window. The primary reason that three of the ten respondents preferred the object-based prototype was that it had a more modern look, and gave a cleaner impression since it only presented the information the respondent was interested in at each point in time. The result also implied that the possibility to get familiar with the prototype by testing it for a couple of days affected the result. Eight out of ten respondents preferred the prototype they got familiar to, and the only ones that liked or preferred the object-based prototype were those who had gotten familiar with it. The results of the study support the results of the existing research done by Dow et al. (2010) on the use of parallel prototypes, i.e. creating several prototypes in parallel, and conform with the results of the research of Karapanos et al. (2009) on how user experience changes over time. Some other interesting information that emerged from the study was that all but one of the respondents thought that the prototype they got familiar with had an acceptable level of usability. The study also validated that all respondents are positive to use a dashboard in their work, and that the presented information was enough for a first version of the dashboard. It also validated that the different groups of users would use the dashboard differently, and therefore are in need of slightly different information.
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Evaluating Unsupervised Methods for Out-of-Distribution Detection on Semantically Similar Image Data / Utvärdering av oövervakade metoder för anomalidetektion på semantiskt liknande bilddataPierrau, Magnus January 2021 (has links)
Out-of-distribution detection considers methods used to detect data that deviates from the underlying data distribution used to train some machine learning model. This is an important topic, as artificial neural networks have previously been shown to be capable of producing arbitrarily confident predictions, even for anomalous samples that deviate from the training distribution. Previous work has developed many reportedly effective methods for out-of-distribution detection, but these are often evaluated on data that is semantically different from the training data, and therefore does not necessarily reflect the true performance that these methods would show in more challenging conditions. In this work, six unsupervised out-of- distribution detection methods are evaluated and compared under more challenging conditions, in the context of classification of semantically similar image data using deep neural networks. It is found that the performance of all methods vary significantly across the tested datasets, and that no one method is consistently superior. Encouraging results are found for a method using ensembles of deep neural networks, but overall, the observed performance for all methods is considerably lower than in many related works, where easier tasks are used to evaluate the performance of these methods. / Begreppet “out-of-distribution detection” (OOD-detektion) avser metoder vilka används för att upptäcka data som avviker från den underliggande datafördelningen som använts för att träna en maskininlärningsmodell. Detta är ett viktigt ämne, då artificiella neuronnät tidigare har visat sig benägna att generera godtyckligt säkra förutsägelser, även på data som avviker från den underliggande träningsfördelningen. Tidigare arbeten har producerat många välpresterande OOD-detektionsmetoder, men dessa har ofta utvärderats på data som är semantiskt olikt träningsdata, och reflekterar därför inte nödvändigtvis metodernas förmåga under mer utmanande förutsättningar. I detta arbete utvärderas och jämförs sex oövervakade OOD-detektionsmetoder under utmanande förhållanden, i form av klassificering av semantiskt liknande bilddata med hjälp av djupa neuronnät. Arbetet visar att resultaten för samtliga metoder varierar markant mellan olika data och att ingen enskild modell är konsekvent överlägsen de andra. Arbetet finner lovande resultat för en metod som utnyttjar djupa neuronnätsensembler, men överlag så presterar samtliga modeller sämre än vad tidigare arbeten rapporterat, där mindre utmanande data har nyttjats för att utvärdera metoderna.
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A comparative evaluation of educational programmes at zoological institutions in three countriesVenter, Elizabeth Jacoba 11 1900 (has links)
The aim of this study was to comparatively evaluate the Conservation Education programmes of the National Zoological Gardens of South Africa (NZG) in Pretoria, South Africa, the Uganda Wildlife Education Centre (UWEC) in Entebbe, Uganda and Zoo Negara in Kuala Lumpur in Malaysia, in order to devise a Model for an effective zoo Conservation Education Programme. A mixed-methods strategy, namely concurrent triangulation, was used for data-collection. The quantitative method was that of surveys by means of group-administered questionnaires. The population for the quantitative study was school groups that visited the zoos. The qualitative research questions were addressed by means of individual semi-structured interviews. Interpretive analysis was used to analyse the qualitative data. The participants of the qualitative study were staff members at the zoos and other key figures in the zoo – and conservation sector. The impact of Conservation Education programmes of the zoos were evaluated by means of a logic model. The quantitative results indicated that the Conservation Education programmes were successful in increasing the knowledge of the learners and in increasing their intention to change behaviour. This study further indicated that, although attending zoo Conservation Education programmes has the potential to increase the attitudes and values of learners, this was not always the case. Furthermore, the results show that when learners tested high with regard to their knowledge, attitudes and values prior to attending a Conservation Education programme, their knowledge, attitudes and values will not change significantly after they attended a Conservation Education programme. Furthermore, the results of the qualitative study indicated that the evaluation of Conservation Education programmes and the training of zoo educators should receive more attention to ensure the success of these programmes. It can be concluded that the role of zoos have become even more important to conserve biodiversity through their Conservation Education programmes. / Curriculum and Instructional Studies / D. Ed. (Didactics)
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A comparative evaluation of educational programmes at zoological institutions in three countriesVenter, Elizabeth Jacoba 11 1900 (has links)
The aim of this study was to comparatively evaluate the Conservation Education programmes of the National Zoological Gardens of South Africa (NZG) in Pretoria, South Africa, the Uganda Wildlife Education Centre (UWEC) in Entebbe, Uganda and Zoo Negara in Kuala Lumpur in Malaysia, in order to devise a Model for an effective zoo Conservation Education Programme. A mixed-methods strategy, namely concurrent triangulation, was used for data-collection. The quantitative method was that of surveys by means of group-administered questionnaires. The population for the quantitative study was school groups that visited the zoos. The qualitative research questions were addressed by means of individual semi-structured interviews. Interpretive analysis was used to analyse the qualitative data. The participants of the qualitative study were staff members at the zoos and other key figures in the zoo – and conservation sector. The impact of Conservation Education programmes of the zoos were evaluated by means of a logic model. The quantitative results indicated that the Conservation Education programmes were successful in increasing the knowledge of the learners and in increasing their intention to change behaviour. This study further indicated that, although attending zoo Conservation Education programmes has the potential to increase the attitudes and values of learners, this was not always the case. Furthermore, the results show that when learners tested high with regard to their knowledge, attitudes and values prior to attending a Conservation Education programme, their knowledge, attitudes and values will not change significantly after they attended a Conservation Education programme. Furthermore, the results of the qualitative study indicated that the evaluation of Conservation Education programmes and the training of zoo educators should receive more attention to ensure the success of these programmes. It can be concluded that the role of zoos have become even more important to conserve biodiversity through their Conservation Education programmes. / Curriculum and Instructional Studies / D. Ed. (Didactics)
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Srovnání vybraných způsobů ocenění pro nemovitost typu byt a nebytový prostor v lokalitě Brno - Lesná / Comparison of Selected Methods of Flat and Non-Residential Premises Valuation in Lesná, BrnoUrbánek, Zdeněk January 2010 (has links)
This thesis survey on juxtaposition choice waies evaluation for real property type residence and non-residential space in locality Lesná, where there are built - up type sectional construction namely more - housing type J. Are here used most common manners evaluation for these print real property. On top enclosed is several formulation of several estate agency (juxtaposition offers with demand) in given to locality. Further also design documentation housing periods in type panel building.
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