12,807 Hits in 2.8 sec

Quality-based guidance for exploratory dimensionality reduction

Sara Johansson Fernstad, Jane Shaw, Jimmy Johansson
2012 Information Visualization  
This paper presents flexible methods for exploratory analysis and interactive dimensionality reduction.  ...  For exploratory analysis, as well as for many other tasks, several structures may be of interest. Exploration of the full high dimensional data set without reduction may also be desirable.  ...  To summarize, the main contributions of this paper is a generic system for exploratory dimensionality reduction that includes: • Several methods for interactive and quality guided dimensionality reduction  ... 
doi:10.1177/1473871612460526 fatcat:a4p24cohcjgqfcaats5meuppy4

Visual exploration of microbial populations

Sara Johansson Fernstad, Jimmy Johansson, Suzi Adams, Jane Shaw, David Taylor
2011 2011 IEEE Symposium on Biological Data Visualization (BioVis).  
It extends previous interactive systems for explorative dimensionality reduction by including a range of domain relevant features.  ...  It contributes a flexible and explorative dimensionality reduction as well as a visual and interactive environment for examination of data subsets.  ...  ACKNOWLEDGEMENTS Our thanks to colleagues at Unilever Discover Port Sunlight for useful discussions, feedback and data preparation, particularly S. Grimshaw, P. Helme and A. Smith.  ... 
doi:10.1109/biovis.2011.6094057 dblp:conf/biovis/FernstadJAST11 fatcat:5lrd2jt3njghti2owgu2zudo3q

An Exploratory Study On Using Stage Theory To Develop A Data Management Measurement Framework

Angela Mattia
2011 International Journal of Management & Information Systems  
An exploratory measurement tool is developed, tested and refined.  ...  The above results are based on this reduction of items to thirteen and factors to four.  ...  Nevertheless, the DMM proved to be a valid measure for this exploratory research confirming portions of the measure based on the fact that different data management maturity stages have certain characteristics  ... 
doi:10.19030/ijmis.v15i4.5810 fatcat:b5hveed2krgrplym6zqqlghn34

Clustrophile 2: Guided Visual Clustering Analysis [article]

Marco Cavallo, Çağatay Demiralp
2018 arXiv   pre-print
Clustrophile 2 guides users in clustering-based exploratory analysis, adapts user feedback to improve user guidance, facilitates the interpretation of clusters, and helps quickly reason about differences  ...  Results suggest that Clustrophile 2 improves the speed and effectiveness of exploratory clustering analysis for both experts and non-experts.  ...  It also enables correlation analysis and ANOVA-based significance along with what-if analysis through direct manipulation on dimensionality reduction scatterplots.  ... 
arXiv:1804.03048v3 fatcat:ejg45b4y6bcorchmrr27v7dqam

Exploratory data analysis of human activity recognition based on smart phone

Weiheng Kong, Lili He, Hailong Wang
2021 IEEE Access  
The fourth section shows and discusses the experimental results after dimensionality reduction and visualization using t-SNE dimensionality reduction technology.  ...  reduction technique used to visualize high-dimensional datasets in two-dimensional or threedimensional low-dimensional space.  ... 
doi:10.1109/access.2021.3079434 fatcat:tram5j4zjzayjeiwkxvbimuima

Dimensionality and reliability of USM pre-clinical medical students' guidance and counselling needs questionnaire

Mohd Z.M. Nor, Najib M. Yaacob, Jamilah Al-Muhammady Mohammad
2019 Journal of Taibah University Medical Sciences  
This study aimed to determine the dimensionality and reliability of a questionnaire developed for establishing guidance and counselling for pre-clinical medical students at Universiti Sains Malaysia (USM  ...  There is no standard mechanism for empathy guidance and counselling for medical students.  ...  Acknowledgment The authors would like to thank the Head of Department, Department of Medical Education, School of Medical Science, Universiti Sains Malaysia for his continuous support and contributions  ... 
doi:10.1016/j.jtumed.2019.01.002 pmid:31435402 pmcid:PMC6695042 fatcat:z6xx35jl2rhw5bl74eh3himjxy

Deriving a preference-based utility measure for cancer patients from the European Organisation for the Research and Treatment of Cancer's Quality of Life Questionnaire C30: a confirmatory versus exploratory approach

Daniel Costa, Neil Aaronson, Peter Fayers, Peter Grimison, Monika Janda, Julie Pallant, Donna Rowen, Galina Velikova, Rosalie Viney, Tracey Young, Madeleine King
2014 Patient Related Outcome Measures  
Currently, exploratory factor analysis (EFA) followed by Rasch analysis is recommended for deriving a MAUI from a HRQOL measure.  ...  Keywords: multi attribute utility instrument, health state classification system, confirmatory factor analysis, exploratory factor analysis, European Organisation for the Research and Treatment of Cancer  ...  dimensionality is more appropriate than an exploratory approach.  ... 
doi:10.2147/prom.s68776 pmid:25395875 pmcid:PMC4227619 fatcat:bwsbeg2ygfbs7ngpcpmwrvj2xe

Validating Scales for Tourism Impacts, Quality of Life, and Support Tourism: An Exploratory Factor Approach

I. Oladeji Kolawole
2019 Mediterranean Journal of Social Sciences  
, people's quality of life, and support for tourism development.  ...  The purpose of this paper is to validate measurement instrument that can be used to determine tourism impacts, people's quality of life, and support for tourism.  ...  Based on this, support for tourism development was measured using five observable variables.  ... 
doi:10.2478/mjss-2019-0067 fatcat:dalsb5afoncarafs7tqlddnisy

Making the most of high‐dimensional cytometry data

Felix MD Marsh‐Wakefield, Andrew J Mitchell, Samuel E Norton, Thomas Myles Ashhurst, Julia KH Leman, Joanna M Roberts, Jessica E Harte, Helen M McGuire, Roslyn A Kemp
2021 Immunology and Cell Biology  
to maximise quality data collection.  ...  A plethora of analysis and visualisation tools and programmes are now available for both new and experienced users; however, the transition from low-dimensional to high-dimensional cytometry requires a  ...  ACKNOWLEDGMENTS We thank the Australia and New Zealand Society for Immunology and the Australasian Cytometry Society for providing funding to host a workshop to create this work.  ... 
doi:10.1111/imcb.12456 pmid:33797774 fatcat:fz5gabqd7bhitb3swqfzvgmwf4

SeekAView: An intelligent dimensionality reduction strategy for navigating high-dimensional data spaces

Josua Krause, Aritra Dasgupta, Jean-Daniel Fekete, Enrico Bertini
2016 2016 IEEE 6th Symposium on Large Data Analysis and Visualization (LDAV)  
In SeekAView we address these issues using suggestion based visual exploration of interesting patterns for building and refining multidimensional subspaces.  ...  First, automated methods like dimensionality reduction or clustering suffer from a lack of transparency in letting analysts interact with their outputs in real-time to suit their exploration strategies  ...  Dimensionality Reduction Strategies For handling the curse of dimensionality problem, one solution is to use dimensionality reduction methods like PCA, t-SNE [32] , or MDS [18] .  ... 
doi:10.1109/ldav.2016.7874305 dblp:conf/ldav/KrauseDFB16 fatcat:cn3ej6zyhrbm7hrpyvq2uslw6a

A framework for the analysis of heterogeneity of treatment effect in patient-centered outcomes research

Ravi Varadhan, Jodi B. Segal, Cynthia M. Boyd, Albert W. Wu, Carlos O. Weiss
2013 Journal of Clinical Epidemiology  
Heterogeneity of treatment effect analysis should be identified as confirmatory, descriptive, exploratory, or predictive analysis.  ...  An overemphasis on hypothesis testing has resulted in a dichotomy of all heterogeneity of treatment effect analyses into confirmatory (hypothesis testing) and exploratory (hypothesis finding) analyses.  ...  Statements in the report should not be construed as endorsement by the Agency for Healthcare Research and Quality or the US Department of Health and Human Services. Dr.  ... 
doi:10.1016/j.jclinepi.2013.02.009 pmid:23651763 pmcid:PMC4450361 fatcat:vj6hlkc7jvaavf3hv6lcetbbii


2020 Intelligent Data Analysis  
models at minimum expense under an expert's guidance.  ...  Their experiments show that their proposed algorithm has remarkable advantages in accuracy and stability for high dimensional, unimodal and multimodal problems.  ...  Masegoza et al. in the next article of this group discuss analysing concept drift through a case study where they present a method for exploratory data analysis of streaming data based on probabilistic  ... 
doi:10.3233/ida-200002 fatcat:tu5bowrw7bfslcpcm3llakfuzm

An Interactive Visualization Tool for Sensor-based Physical Activity Data Analysis

Chuxuan Tong, Jinglan Zhang, Alok Chowdhury, Stewart G. Trost
2019 Proceedings of the Australasian Computer Science Week Multiconference on - ACSW 2019  
An interactive visualization tool for sensor-based physical activity data analysis.  ...  Jinlan Zhang, my supervisors, for giving me invaluable suggestions for this paper writing. I also wish to thank Dr.  ...  Alok Kumar Chowdhury and Professor Stewart G.Trost for their direction and assistance.  ... 
doi:10.1145/3290688.3290734 dblp:conf/acsw/TongZCT19 fatcat:3lc4duxkxrbanlahesput2fdz4

Sustainability, Efficiency, and Competitiveness in Rail Mobility: The ADIF-Spain Case Study

José Ramón García-Aranda, Raquel Ortega-Lapiedra, Jara Bernués-Olivan
2021 Sustainability  
The proposal for this Integrated Framework for The Transformation of Organizations is carried out to consolidate the EFQM Model, not only as a management evaluation tool, but also as a quality of management  ...  This work aims to propose alternatives to the EFQM (European Foundation for Quality Management) Model from the perspectives of sustainability, efficiency, and competitiveness, with an application to the  ...  Sustainability 2021 , 2021 13, x FOR PEER REVIEW 5 of 13 Figure 2 . 2 Figure 2. Three dimensional simplified research model: Guidance, Action, and Feedback. Figure 2 . 2 Figure 2.  ... 
doi:10.3390/su13168977 fatcat:twgqrw773vdvvfbsw4rfsgfyom

Visualizing High-Dimensional Data: Advances in the Past Decade

Shusen Liu, Dan Maljovec, Bei Wang, Peer-Timo Bremer, Valerio Pascucci
2017 IEEE Transactions on Visualization and Computer Graphics  
We aim at providing actionable guidance for data practitioners to navigate through a modular view of the recent advances, allowing the creation of new visualizations along the enriched information visualization  ...  pipeline and identifying future opportunities for visualization research.  ...  This technique is then generalized [MLGH13] and used for visualizing dimension reduction quality.  ... 
doi:10.1109/tvcg.2016.2640960 pmid:28113321 fatcat:3xb2npz44fgxzpfueum5hhso5u
« Previous Showing results 1 — 15 out of 12,807 results