Have a personal or library account? Click to login
Occupation Coding During the Interview in a Web-First Sequential Mixed-Mode Survey Cover

Occupation Coding During the Interview in a Web-First Sequential Mixed-Mode Survey

Open Access
|Dec 2021

References

  1. Belloni, M., A. Brugiavini, E. Meschi, and K. Tijdens. 2016. “Measuring and detecting errors in occupational coding: an analysis of SHARE data.” <em>Journal of Official Statistics</em>, 32(4): 917–945. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.1515/jos-2016-0049" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.1515/jos-2016-0049</a>">https://doi.org/10.1515/jos-2016-0049</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1515/jos-2016-0049" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1515/jos-2016-0049</a></dgdoi:pub-id>
  2. Bergmann, M.M., and D. Joye. 2005. “Comparing Social Stratification Schemata: CAMSIS, CSP-CH, Goldthorpe, ISCO-88, Treiman, and Wright.” <em>Cambridge Studies in Social Research</em> 10: 1–35. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.sociology.cam.ac.uk/system/-files/documents/cs10.pdf">https://www.sociology.cam.ac.uk/system/-files/documents/cs10.pdf</ext-link> (accessed October 2019).
  3. Brugiavini, A., M. Belloni, R.E. Buia, and M. Martens. 2017. <em>The “Job Coder”</em>. In SHARE Wave 6: Panel innovations and collecting Dried Blood Spots. Edited by F. Malter and A. Börsch-Supan. Munich: MEA, Max Planck Institute for Social Law and Social Policy: 51–70. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.share-project.org/uploads/tx_sharepublications/201804_SHARE-WAVE-6_MFRB.pdf">http://www.share-project.org/uploads/tx_sharepublications/201804_SHARE-WAVE-6_MFRB.pdf</ext-link> (accessed October 2019).
  4. Burstyn, I., A. Slutsky, D.G. Lee, A.B. Singer, Y. An, and Y.L. Michael. 2014. “Beyond Crosswalks: Reliability of Exposure Assessment Following Automated Coding of FreeText Job Descriptions for Occupational Epidemiology.” <em>The Annals of Occupational Hygiene</em> 58(4): 482–492. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.1093/annhyg/meu006" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.1093/annhyg/meu006</a>">https://doi.org/10.1093/annhyg/meu006</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1093/annhyg/meu006" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1093/annhyg/meu006</a></dgdoi:pub-id><dgpm:pub-id xmlns:dgpm="http://degruyter.com/resources/fetched-pubmed-id" pub-id-type="pmid">24504175</dgpm:pub-id>
  5. Campanelli, P., K. Thompson, N. Moon, and T. Staples. 1997. “The Quality of Occupational Coding in the United Kingdom.” In <em>Survey Measurement and Process Quality</em>. Edited by L. Lyberg, P. Biemer, M. Collins, E. De Leeuw, C. Dippo, N. Schwarz, and D. Trewin: 437–453. New York: Wiley.
  6. Cantor, D., and J.L. Esposito. 1992. “Evaluating Interviewer Style for Collecting Industry and Occupation Information.” In Proceedings of the Section on Survey Methods, American Statistical Association: 661–666. Available at <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.bls.gov/osmr/research-papers/1992/pdf/cp920010.pdf">https://www.bls.gov/osmr/research-papers/1992/pdf/cp920010.pdf</ext-link> (accessed March 2021).
  7. Centre for Longitudinal Studies. 2017. <em>Next Steps Age 25 Survey</em>. Technical Report. University College London. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://doc.ukdataservice.ac.uk/doc/5545/mrdoc/pdf/5545age_25_technical_report.pdf">http://doc.ukdataservice.ac.uk/doc/5545/mrdoc/pdf/5545age_25_technical_report.pdf</ext-link> (accessed October 2019).
  8. Conrad, F., M. Couper, and J.W. Sakshaug. 2016. “Classifying Open-Ended Reports: Factors Affecting the Reliability of Occupation Codes.” <em>Journal of Official Statistics</em> 32(1): 75–92. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.1515/jos-2016-0003" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.1515/jos-2016-0003</a>">https://doi.org/10.1515/jos-2016-0003</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1515/jos-2016-0003" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1515/jos-2016-0003</a></dgdoi:pub-id>
  9. Creecy, R.H., B.M. Masand, S.J. Smith, and D.L. Waltz. 1992. “Trading MIPS and memory for knowledge engineering”. <em>Communications of the ACM</em> 35(8): 48–64. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.1145/135226.135228" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.1145/135226.135228</a>">https://doi.org/10.1145/135226.135228</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1145/135226.135228" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1145/135226.135228</a></dgdoi:pub-id>
  10. Department for Education. 2011. <em>LSYPE User Guide to the Datasets: Wave 1 to Wave 7</em>. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://doc.ukdataservice.ac.uk/doc/5545/mrdoc/pdf/5545lsype_user_guide_wave_1_to_wave_7.pdf">http://doc.ukdataservice.ac.uk/doc/5545/mrdoc/pdf/5545lsype_user_guide_wave_1_to_wave_7.pdf</ext-link> (accessed October 2019).
  11. Elias, P., M. Birch, and R. Ellison. 2014. <em>CASCOT International version 5. User Guide</em>. Institute for Employment Research, University of Warwick, Coventry. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://warwick.ac.uk/fac/soc/ier/software/cascot/internat/cascot_international_user_-guide.pptx">https://warwick.ac.uk/fac/soc/ier/software/cascot/internat/cascot_international_user_-guide.pptx</ext-link> (accessed October 2019).
  12. Gweon H., M. Schonlau, L. Kaczmirek, M. Blohm, and S. Steiner. 2017. “Three Methods for Occupation Coding Based on Statistical Learning.” <em>Journal of Official Statistics</em> 33(1): 101–122. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://dx.doi.org/<a href="https://doi.org/10.1515/JOS-2017-0006" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1515/JOS-2017-0006</a>">http://dx.doi.org/<a href="https://doi.org/10.1515/JOS-2017-0006" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1515/JOS-2017-0006</a></ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1515/jos-2017-0006" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1515/jos-2017-0006</a></dgdoi:pub-id>
  13. Hacking, W., J. Michiels, and S. Jansen, S. 2006. “Computer Assisted Coding by Interviewers.” In Proceedings of the 10th International Blaise Users Conference, IBUC 2006, 9–12 May, Arnhem, The Netherlands. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://blaiseusers.org/2006/Papers/291.pdf">http://blaiseusers.org/2006/Papers/291.pdf</ext-link> (accessed October 2019).
  14. Helppie-McFall, B. and A. Sonnega. 2018. <em>Feasibility and Reliability of Automated Coding of Occupation in the Health and Retirement Study</em>. Ann Arbor MI: University of Michigan Retirement Research Center (WP 2018-392). Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://mrdrc.isr.umich.edu/publications/papers/pdf/wp392.pdf">https://mrdrc.isr.umich.edu/publications/papers/pdf/wp392.pdf</ext-link> (accessed October 2020).<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.2139/ssrn.3338502" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.2139/ssrn.3338502</a></dgdoi:pub-id>
  15. Hoffman, E. 1995. <em>What Kind of Work Do You Do? Data collection and processing strategies when measuring “occupation” for statistical surveys and administrative records.</em> ILO. (WP 1995: 95-1). Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.ilo.org/wcmsp5/groups/public/–-dgreports/–-stat/documents/publication/wcms_087880.pdf">https://www.ilo.org/wcmsp5/groups/public/–-dgreports/–-stat/documents/publication/wcms_087880.pdf</ext-link> (accessed October 2019).
  16. Hox, J.J., E.D. De Leeuw, and E.A. Zijlmans. 2015. “Measurement Equivalence in Mixed Mode Surveys.” <em>Frontiers in Psychology</em> 6(87): 1–11. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.3389/fpsyg.2015.00087" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.3389/fpsyg.2015.00087</a>">https://doi.org/10.3389/fpsyg.2015.00087</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.3389/fpsyg.2015.00087" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.3389/fpsyg.2015.00087</a></dgdoi:pub-id><dgpm:pub-id xmlns:dgpm="http://degruyter.com/resources/fetched-pubmed-id" pub-id-type="pmcid">4318282</dgpm:pub-id><dgpm:pub-id xmlns:dgpm="http://degruyter.com/resources/fetched-pubmed-id" pub-id-type="pmid">25699002</dgpm:pub-id>
  17. Klausch, T., B. Schouten, and J.J. Hox. 2017. “Evaluating Bias of Sequential Mixed-Mode Designs against Benchmark Surveys,” <em>Sociological Methods and Research</em> 46(3): 456–489. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.1177/0049124115585362" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.1177/0049124115585362</a>">https://doi.org/10.1177/0049124115585362</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1177/0049124115585362" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1177/0049124115585362</a></dgdoi:pub-id>
  18. Lyberg, L., and P. Dean. 1992. <em>Automated Coding of Survey Responses: An International Review</em>. R&amp;D Reports (1992–2). Statistics Sweden, Stockholm, Sweden. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.scb.se/contentassets/7c4edb581f8745e3a081e1ba9b332eb4/rnd-report-1992-02-green.pdf">https://www.scb.se/contentassets/7c4edb581f8745e3a081e1ba9b332eb4/rnd-report-1992-02-green.pdf</ext-link> (accessed October 2019).
  19. Massing, N., M. Wasmer, C. Wolf, and C. Zuell. 2019. “How Standardized is Occupational Coding? A Comparison of Results from Different Coding Agencies in Germany.” <em>Journal of Official Statistics</em> 35(1): 167–187. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://dx.doi.org/<a href="https://doi.org/10.2478/JOS-2019-0008" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.2478/JOS-2019-0008</a>">http://dx.doi.org/<a href="https://doi.org/10.2478/JOS-2019-0008" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.2478/JOS-2019-0008</a></ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.2478/jos-2019-0008" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.2478/jos-2019-0008</a></dgdoi:pub-id>
  20. Office for National Statistics. 2010a. <em>Standard Occupational Classification 2010 Volume 1 Structure and descriptions of unit groups.</em> Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.ons.gov.uk/-methodology/classificationsandstandards/standardoccupationalclassificationsoc/-soc2010/soc2010volume1structureanddescriptionsofunitgroups">https://www.ons.gov.uk/-methodology/classificationsandstandards/standardoccupationalclassificationsoc/-soc2010/soc2010volume1structureanddescriptionsofunitgroups</ext-link> (accessed October 2019).
  21. Office for National Statistics. 2010b. <em>Standard Occupational Classification 2010 Volume 2: the structure and coding index.</em> Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.https://www.ons.gov.uk/-methodology/classificationsandstandards/standardoccupationalclassificationsoc/-soc2010/soc2010volume2thestructureandcodingindex">https://www.https://www.ons.gov.uk/-methodology/classificationsandstandards/standardoccupationalclassificationsoc/-soc2010/soc2010volume2thestructureandcodingindex</ext-link> (accessed October 2020).
  22. Ossiander, E.M., and S. Milham. 2006. “A computer system for coding occupation.” <em>American Journal of Industrial Medicine</em> 49: 854–857. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.1002/ajim.20355" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.1002/ajim.20355</a>">https://doi.org/10.1002/ajim.20355</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1002/ajim.20355" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1002/ajim.20355</a></dgdoi:pub-id><dgpm:pub-id xmlns:dgpm="http://degruyter.com/resources/fetched-pubmed-id" pub-id-type="pmid">16804909</dgpm:pub-id>
  23. Schierholz, M., M. Gensicke, N. Tschersich, and F. Kreuter. 2018. “Occupation Coding During the Interview.” <em>Journal of the Royal Statistical Society</em> A 181: 379–407. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://dx.doi.org/<a href="https://doi.org/10.1111/rssa.12297" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1111/rssa.12297</a>">http://dx.doi.org/<a href="https://doi.org/10.1111/rssa.12297" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1111/rssa.12297</a></ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1111/rssa.12297" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1111/rssa.12297</a></dgdoi:pub-id>
  24. Schierholz, M., and M. Schonlau. 2020. “Machine Learning for Occupation Coding – a Comparison Study.” <em>Journal of Survey Statistics and Methodology, smaa023</em>. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.1093/jssam/smaa023" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.1093/jssam/smaa023</a>">https://doi.org/10.1093/jssam/smaa023</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1093/jssam/smaa023" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1093/jssam/smaa023</a></dgdoi:pub-id>
  25. Tijdens, K. 2014. <em>Reviewing the measurement and comparison of occupations across Europe</em> (WP 149, AIAS). Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://pure.uva.nl/ws/files/2172301/154005_WP149_Tijdens_1.pdf">https://pure.uva.nl/ws/files/2172301/154005_WP149_Tijdens_1.pdf</ext-link> (accessed October 2019).
  26. Tijdens, K. 2015a. The design of a tool for the measurement of occupations in web surveys using a global index of occupations. Leuven. (WP InGRID project M21.2). Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://inclusivegrowth.be/downloads/output/m21-4-coding-tool-eind.pdf">https://inclusivegrowth.be/downloads/output/m21-4-coding-tool-eind.pdf</ext-link> (accessed October 2020).
  27. Tijdens, K. 2015b. “Self-identification of occupation in web surveys: requirements for search trees and look-up tables” <em>Survey Methods: Insights from the Field</em>. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://surveyinsights.org/wp-content/uploads/2015/06/Self-identification-of-occupation-in-web-surveys-requirements-for-search-trees-and-look-up-tables-Survey-Methods-Insights-from-the-Field-SMIF.pdf">https://surveyinsights.org/wp-content/uploads/2015/06/Self-identification-of-occupation-in-web-surveys-requirements-for-search-trees-and-look-up-tables-Survey-Methods-Insights-from-the-Field-SMIF.pdf</ext-link> (accessed October 2020).
  28. Tijdens, K. 2016. “<em>Measuring occupations: respondent’s self- identification from a large database</em>.” In Proceedings of European Conference on Quality of Official Statistics, Special session: Synergies for Europe’s Research Infrastructures in the Social Sciences and Official Statistics (SERISS), 2 June 2016. Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://seriss.eu/wp-content/uploads/2016/06/Measuring-Occupations-Respondent%e2%80%99s-self-identification-from-a-large-database.pdf">https://seriss.eu/wp-content/uploads/2016/06/Measuring-Occupations-Respondent%e2%80%99s-self-identification-from-a-large-database.pdf</ext-link> (accessed October 2020).
  29. Tijdens, K., and S. Visintin. 2017. <em>EU-harmonised and comparative measurement of occupations and skills</em>. Leuven. (InGRID project Deliverable 21.1). Available at: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://inclusivegrowth.be/downloads/output/d21-1-eind.pdf">https://inclusivegrowth.be/downloads/output/d21-1-eind.pdf</ext-link> (accessed October 2019).
  30. Vannieuwenhuyze, J.T.A., and G. Loosveldt. 2013. “Evaluating Relative Mode Effects in Mixed-Mode Surveys: Three Methods to Disentangle Selection and Measurement Effects,” <em>Sociological Methods and Research</em> 42(1): 82–104. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.1177/0049124112464868" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.1177/0049124112464868</a>">https://doi.org/10.1177/0049124112464868</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1177/0049124112464868" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1177/0049124112464868</a></dgdoi:pub-id>
  31. Vannieuwenhuyze, J.T.A., G. Loosveldt, and G. Molenberghs. 2014. “Evaluating Mode Effects in Mixed-Mode Survey Data Using Covariate Adjustment Models,” <em>Journal of Official Statistics</em> 30 (1): 1–21. DOI: <ext-link ext-link-type="uri" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="<a href="https://doi.org/10.2478/jos-2014-0001" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">https://doi.org/10.2478/jos-2014-0001</a>">https://doi.org/10.2478/jos-2014-0001</ext-link>.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.2478/jos-2014-0001" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.2478/jos-2014-0001</a></dgdoi:pub-id>
Language: English
Page range: 981 - 1007
Submitted on: May 1, 2020
Accepted on: Mar 1, 2021
Published on: Dec 26, 2021
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year

© 2021 Darina N. Peycheva, Joseph W. Sakshaug, Lisa Calderwood, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.