---
_id: '65182'
abstract:
- lang: eng
  text: <jats:p>The aggregation of rating metrics in reputation systems is crucial
    for mitigating information overload by condensing customer rating distributions
    into singular valence scores. While platforms typically employ technical aggregation
    functions, such as the arithmetic mean to capture product quality, it remains
    unclear whether these functions align with customers' innate aggregation patterns.
    To address this knowledge gap, we designed a controlled economic decision experiment
    to elicit customers' aggregation principles by analyzing their product ranking
    decisions and contrasting these with various reference functions. Our findings
    indicate that, on average, customers aggregate rating information in accordance
    with the arithmetic mean. However, a granular analysis at the individual level
    reveals significant heterogeneity in aggregation behavior, with a substantial
    cluster exhibiting binary patterns that focus equally on negative (1-2 star) and
    positive (4-5 star) ratings. Additional clusters concentrate on negative feedback,
    particularly 1-star ratings or 1-2 star ratings collectively. Notably, these inherent
    aggregation patterns exhibit stability across variations in numerical information
    presentation and are not significantly influenced by individual characteristics,
    such as online shopping experience, risk attitudes, or demographics. These findings
    suggest that while the arithmetic mean captures average consumer behavior, platforms
    could benefit from offering customizable aggregation options to better cater to
    diverse user preferences for processing rating distributions. By doing so, platforms
    can enhance the effectiveness of their reputation systems and improve the overall
    quality of decision-making for consumers.</jats:p>
author:
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
- first_name: Behnud
  full_name: Mir Djawadi, Behnud
  id: '26032'
  last_name: Mir Djawadi
  orcid: 0000-0002-6271-5912
- first_name: Vitalik
  full_name: Melnikov, Vitalik
  id: '58747'
  last_name: Melnikov
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
- first_name: René
  full_name: Fahr, René
  id: '111'
  last_name: Fahr
citation:
  ama: van Straaten D, Mir Djawadi B, Melnikov V, Hüllermeier E, Fahr R. Aggregation
    Processes in Customer Rating Systems - Insights from an Economic Decision Experiment.
    <i>SSRN Electronic Journal</i>. Published online 2026. doi:<a href="http://dx.doi.org/10.2139/ssrn.6201258">http://dx.doi.org/10.2139/ssrn.6201258</a>
  apa: van Straaten, D., Mir Djawadi, B., Melnikov, V., Hüllermeier, E., &#38; Fahr,
    R. (2026). Aggregation Processes in Customer Rating Systems - Insights from an
    Economic Decision Experiment. <i>SSRN Electronic Journal</i>. <a href="http://dx.doi.org/10.2139/ssrn.6201258">http://dx.doi.org/10.2139/ssrn.6201258</a>
  bibtex: '@article{van Straaten_Mir Djawadi_Melnikov_Hüllermeier_Fahr_2026, title={Aggregation
    Processes in Customer Rating Systems - Insights from an Economic Decision Experiment},
    DOI={<a href="http://dx.doi.org/10.2139/ssrn.6201258">http://dx.doi.org/10.2139/ssrn.6201258</a>},
    journal={SSRN Electronic Journal}, publisher={Elsevier BV}, author={van Straaten,
    Dirk and Mir Djawadi, Behnud and Melnikov, Vitalik and Hüllermeier, Eyke and Fahr,
    René}, year={2026} }'
  chicago: Straaten, Dirk van, Behnud Mir Djawadi, Vitalik Melnikov, Eyke Hüllermeier,
    and René Fahr. “Aggregation Processes in Customer Rating Systems - Insights from
    an Economic Decision Experiment.” <i>SSRN Electronic Journal</i>, 2026. <a href="http://dx.doi.org/10.2139/ssrn.6201258">http://dx.doi.org/10.2139/ssrn.6201258</a>.
  ieee: 'D. van Straaten, B. Mir Djawadi, V. Melnikov, E. Hüllermeier, and R. Fahr,
    “Aggregation Processes in Customer Rating Systems - Insights from an Economic
    Decision Experiment,” <i>SSRN Electronic Journal</i>, 2026, doi: <a href="http://dx.doi.org/10.2139/ssrn.6201258">http://dx.doi.org/10.2139/ssrn.6201258</a>.'
  mla: van Straaten, Dirk, et al. “Aggregation Processes in Customer Rating Systems
    - Insights from an Economic Decision Experiment.” <i>SSRN Electronic Journal</i>,
    Elsevier BV, 2026, doi:<a href="http://dx.doi.org/10.2139/ssrn.6201258">http://dx.doi.org/10.2139/ssrn.6201258</a>.
  short: D. van Straaten, B. Mir Djawadi, V. Melnikov, E. Hüllermeier, R. Fahr, SSRN
    Electronic Journal (2026).
date_created: 2026-03-27T16:21:55Z
date_updated: 2026-03-27T21:55:03Z
department:
- _id: '179'
doi: http://dx.doi.org/10.2139/ssrn.6201258
language:
- iso: eng
publication: SSRN Electronic Journal
publication_status: published
publisher: Elsevier BV
status: public
title: Aggregation Processes in Customer Rating Systems - Insights from an Economic
  Decision Experiment
type: journal_article
user_id: '26032'
year: '2026'
...
---
_id: '30341'
author:
- first_name: Britta
  full_name: Hoyer, Britta
  id: '42447'
  last_name: Hoyer
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
citation:
  ama: Hoyer B, van Straaten D. Anonymity and Self-Expression in Online Rating Systems
    - An Experimental Analysis. <i>Journal of Behavioral and Experimental Economics</i>.
    2022;98:101869. doi:<a href="https://doi.org/10.1016/j.socec.2022.101869">10.1016/j.socec.2022.101869</a>
  apa: Hoyer, B., &#38; van Straaten, D. (2022). Anonymity and Self-Expression in
    Online Rating Systems - An Experimental Analysis. <i>Journal of Behavioral and
    Experimental Economics</i>, <i>98</i>, 101869. <a href="https://doi.org/10.1016/j.socec.2022.101869">https://doi.org/10.1016/j.socec.2022.101869</a>
  bibtex: '@article{Hoyer_van Straaten_2022, title={Anonymity and Self-Expression
    in Online Rating Systems - An Experimental Analysis}, volume={98}, DOI={<a href="https://doi.org/10.1016/j.socec.2022.101869">10.1016/j.socec.2022.101869</a>},
    journal={Journal of Behavioral and Experimental Economics}, publisher={Elsevier
    BV}, author={Hoyer, Britta and van Straaten, Dirk}, year={2022}, pages={101869}
    }'
  chicago: 'Hoyer, Britta, and Dirk van Straaten. “Anonymity and Self-Expression in
    Online Rating Systems - An Experimental Analysis.” <i>Journal of Behavioral and
    Experimental Economics</i> 98 (2022): 101869. <a href="https://doi.org/10.1016/j.socec.2022.101869">https://doi.org/10.1016/j.socec.2022.101869</a>.'
  ieee: 'B. Hoyer and D. van Straaten, “Anonymity and Self-Expression in Online Rating
    Systems - An Experimental Analysis,” <i>Journal of Behavioral and Experimental
    Economics</i>, vol. 98, p. 101869, 2022, doi: <a href="https://doi.org/10.1016/j.socec.2022.101869">10.1016/j.socec.2022.101869</a>.'
  mla: Hoyer, Britta, and Dirk van Straaten. “Anonymity and Self-Expression in Online
    Rating Systems - An Experimental Analysis.” <i>Journal of Behavioral and Experimental
    Economics</i>, vol. 98, Elsevier BV, 2022, p. 101869, doi:<a href="https://doi.org/10.1016/j.socec.2022.101869">10.1016/j.socec.2022.101869</a>.
  short: B. Hoyer, D. van Straaten, Journal of Behavioral and Experimental Economics
    98 (2022) 101869.
date_created: 2022-03-16T06:24:37Z
date_updated: 2022-03-21T06:07:39Z
department:
- _id: '280'
- _id: '475'
- _id: '179'
doi: 10.1016/j.socec.2022.101869
intvolume: '        98'
keyword:
- General Social Sciences
- Economics and Econometrics
- Applied Psychology
language:
- iso: eng
main_file_link:
- url: https://www.sciencedirect.com/science/article/abs/pii/S2214804322000441
page: '101869'
project:
- _id: '1'
  name: 'SFB 901: SFB 901'
- _id: '2'
  name: 'SFB 901 - A: SFB 901 - Project Area A'
- _id: '7'
  name: 'SFB 901 - A3: SFB 901 - Subproject A3'
- _id: '8'
  name: 'SFB 901 - A4: SFB 901 - Subproject A4'
publication: Journal of Behavioral and Experimental Economics
publication_identifier:
  issn:
  - 2214-8043
publication_status: published
publisher: Elsevier BV
status: public
title: Anonymity and Self-Expression in Online Rating Systems - An Experimental Analysis
type: journal_article
user_id: '42447'
volume: 98
year: '2022'
...
---
_id: '24886'
author:
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
citation:
  ama: van Straaten D. <i>Inferring Quality with Reputation Systems - Experimental
    Evidence on Elicitation Mechanisms and Aggregation Metrics</i>.; 2021. doi:<a
    href="https://doi.org/10.17619/UNIPB/1-1189 ">10.17619/UNIPB/1-1189 </a>
  apa: van Straaten, D. (2021). <i>Inferring Quality with Reputation Systems - Experimental
    Evidence on Elicitation Mechanisms and Aggregation Metrics</i>. <a href="https://doi.org/10.17619/UNIPB/1-1189
    ">https://doi.org/10.17619/UNIPB/1-1189 </a>
  bibtex: '@book{van Straaten_2021, title={Inferring Quality with Reputation Systems
    - Experimental Evidence on Elicitation Mechanisms and Aggregation Metrics}, DOI={<a
    href="https://doi.org/10.17619/UNIPB/1-1189 ">10.17619/UNIPB/1-1189 </a>}, author={van
    Straaten, Dirk}, year={2021} }'
  chicago: Straaten, Dirk van. <i>Inferring Quality with Reputation Systems - Experimental
    Evidence on Elicitation Mechanisms and Aggregation Metrics</i>, 2021. <a href="https://doi.org/10.17619/UNIPB/1-1189
    ">https://doi.org/10.17619/UNIPB/1-1189 </a>.
  ieee: D. van Straaten, <i>Inferring Quality with Reputation Systems - Experimental
    Evidence on Elicitation Mechanisms and Aggregation Metrics</i>. 2021.
  mla: van Straaten, Dirk. <i>Inferring Quality with Reputation Systems - Experimental
    Evidence on Elicitation Mechanisms and Aggregation Metrics</i>. 2021, doi:<a href="https://doi.org/10.17619/UNIPB/1-1189
    ">10.17619/UNIPB/1-1189 </a>.
  short: D. van Straaten, Inferring Quality with Reputation Systems - Experimental
    Evidence on Elicitation Mechanisms and Aggregation Metrics, 2021.
date_created: 2021-09-22T12:31:54Z
date_updated: 2022-01-06T06:56:40Z
department:
- _id: '178'
doi: '10.17619/UNIPB/1-1189 '
language:
- iso: eng
project:
- _id: '1'
  name: SFB 901
- _id: '2'
  name: SFB 901 - Project Area A
- _id: '8'
  name: SFB 901 - Subproject A4
status: public
supervisor:
- first_name: René
  full_name: Fahr, René
  id: '111'
  last_name: Fahr
title: Inferring Quality with Reputation Systems - Experimental Evidence on Elicitation
  Mechanisms and Aggregation Metrics
type: dissertation
user_id: '15504'
year: '2021'
...
---
_id: '45616'
abstract:
- lang: eng
  text: Aggregation metrics in reputation systems are important for overcoming information
    overload. When using these metrics, technical aggregation functions such as the
    arithmetic mean are implemented to measure the valence of product ratings. However,
    it is unclear whether the implemented aggregation functions match the inherent
    aggregation patterns of customers. In our experiment, we elicit customers' aggregation
    heuristics and contrast these with reference functions. Our findings indicate
    that, overall, the arithmetic mean performs best in comparison with other aggregation
    functions. However, our analysis on an individual level reveals heterogeneous
    aggregation patterns. Major clusters exhibit a binary bias (i.e., an over-weighting
    of moderate ratings and under-weighting of extreme ratings) in combination with
    the arithmetic mean. Minor clusters focus on 1-star ratings or negative (i.e.,
    1-star and 2-star) ratings. Thereby, inherent aggregation patterns are neither
    affected by variation of provided information nor by individual characteristics
    such as experience, risk attitudes, or demographics.
author:
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
- first_name: Vitalik
  full_name: Melnikov, Vitalik
  id: '58747'
  last_name: Melnikov
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
- first_name: Behnud
  full_name: Mir Djawadi, Behnud
  id: '26032'
  last_name: Mir Djawadi
  orcid: 0000-0002-6271-5912
- first_name: René
  full_name: Fahr, René
  id: '111'
  last_name: Fahr
citation:
  ama: 'van Straaten D, Melnikov V, Hüllermeier E, Mir Djawadi B, Fahr R. <i>Accounting
    for Heuristics in Reputation Systems: An Interdisciplinary Approach on Aggregation
    Processes</i>. Vol 72.; 2021.'
  apa: 'van Straaten, D., Melnikov, V., Hüllermeier, E., Mir Djawadi, B., &#38; Fahr,
    R. (2021). <i>Accounting for Heuristics in Reputation Systems: An Interdisciplinary
    Approach on Aggregation Processes</i> (Vol. 72).'
  bibtex: '@book{van Straaten_Melnikov_Hüllermeier_Mir Djawadi_Fahr_2021, series={Working
    Papers Dissertations}, title={Accounting for Heuristics in Reputation Systems:
    An Interdisciplinary Approach on Aggregation Processes}, volume={72}, author={van
    Straaten, Dirk and Melnikov, Vitalik and Hüllermeier, Eyke and Mir Djawadi, Behnud
    and Fahr, René}, year={2021}, collection={Working Papers Dissertations} }'
  chicago: 'Straaten, Dirk van, Vitalik Melnikov, Eyke Hüllermeier, Behnud Mir Djawadi,
    and René Fahr. <i>Accounting for Heuristics in Reputation Systems: An Interdisciplinary
    Approach on Aggregation Processes</i>. Vol. 72. Working Papers Dissertations,
    2021.'
  ieee: 'D. van Straaten, V. Melnikov, E. Hüllermeier, B. Mir Djawadi, and R. Fahr,
    <i>Accounting for Heuristics in Reputation Systems: An Interdisciplinary Approach
    on Aggregation Processes</i>, vol. 72. 2021.'
  mla: 'van Straaten, Dirk, et al. <i>Accounting for Heuristics in Reputation Systems:
    An Interdisciplinary Approach on Aggregation Processes</i>. 2021.'
  short: 'D. van Straaten, V. Melnikov, E. Hüllermeier, B. Mir Djawadi, R. Fahr, Accounting
    for Heuristics in Reputation Systems: An Interdisciplinary Approach on Aggregation
    Processes, 2021.'
date_created: 2023-06-15T08:23:33Z
date_updated: 2023-07-05T07:27:17Z
intvolume: '        72'
language:
- iso: eng
project:
- _id: '8'
  grant_number: '160364472'
  name: 'SFB 901 - A4: SFB 901 - Empirische Analysen in Märkten für OTF Dienstleistungen
    (Subproject A4)'
- _id: '1'
  grant_number: '160364472'
  name: 'SFB 901: SFB 901: On-The-Fly Computing - Individualisierte IT-Dienstleistungen
    in dynamischen Märkten '
- _id: '2'
  name: 'SFB 901 - A: SFB 901 - Project Area A'
series_title: Working Papers Dissertations
status: public
title: 'Accounting for Heuristics in Reputation Systems: An Interdisciplinary Approach
  on Aggregation Processes'
type: working_paper
user_id: '477'
volume: 72
year: '2021'
...
---
_id: '45617'
author:
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
citation:
  ama: van Straaten D. <i>Incentive Schemes in Customer Rating Systems - Comparing
    the Effects of Unconditional and Conditional Rebates on Intrinsic Motivation</i>.
    Vol 71.; 2021.
  apa: van Straaten, D. (2021). <i>Incentive Schemes in Customer Rating Systems -
    Comparing the Effects of Unconditional and Conditional Rebates on Intrinsic Motivation</i>
    (Vol. 71).
  bibtex: '@book{van Straaten_2021, series={Working Papers Dissertations}, title={Incentive
    Schemes in Customer Rating Systems - Comparing the Effects of Unconditional and
    Conditional Rebates on Intrinsic Motivation}, volume={71}, author={van Straaten,
    Dirk}, year={2021}, collection={Working Papers Dissertations} }'
  chicago: Straaten, Dirk van. <i>Incentive Schemes in Customer Rating Systems - Comparing
    the Effects of Unconditional and Conditional Rebates on Intrinsic Motivation</i>.
    Vol. 71. Working Papers Dissertations, 2021.
  ieee: D. van Straaten, <i>Incentive Schemes in Customer Rating Systems - Comparing
    the Effects of Unconditional and Conditional Rebates on Intrinsic Motivation</i>,
    vol. 71. 2021.
  mla: van Straaten, Dirk. <i>Incentive Schemes in Customer Rating Systems - Comparing
    the Effects of Unconditional and Conditional Rebates on Intrinsic Motivation</i>.
    2021.
  short: D. van Straaten, Incentive Schemes in Customer Rating Systems - Comparing
    the Effects of Unconditional and Conditional Rebates on Intrinsic Motivation,
    2021.
date_created: 2023-06-15T08:26:22Z
date_updated: 2023-07-05T07:26:14Z
intvolume: '        71'
language:
- iso: eng
project:
- _id: '8'
  grant_number: '160364472'
  name: 'SFB 901 - A4: SFB 901 - Empirische Analysen in Märkten für OTF Dienstleistungen
    (Subproject A4)'
- _id: '1'
  grant_number: '160364472'
  name: 'SFB 901: SFB 901: On-The-Fly Computing - Individualisierte IT-Dienstleistungen
    in dynamischen Märkten '
- _id: '2'
  name: 'SFB 901 - A: SFB 901 - Project Area A'
series_title: Working Papers Dissertations
status: public
title: Incentive Schemes in Customer Rating Systems - Comparing the Effects of Unconditional
  and Conditional Rebates on Intrinsic Motivation
type: working_paper
user_id: '477'
volume: 71
year: '2021'
...
---
_id: '45618'
author:
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
- first_name: René
  full_name: Fahr, René
  id: '111'
  last_name: Fahr
citation:
  ama: van Straaten D, Fahr R. <i>Fighting Fire with Fire - Overcoming Ambiguity Aversion
    by Introducing More Ambiguity</i>. Vol 73.; 2021.
  apa: van Straaten, D., &#38; Fahr, R. (2021). <i>Fighting Fire with Fire - Overcoming
    Ambiguity Aversion by Introducing more Ambiguity</i> (Vol. 73).
  bibtex: '@book{van Straaten_Fahr_2021, series={Working Papers Dissertations}, title={Fighting
    Fire with Fire - Overcoming Ambiguity Aversion by Introducing more Ambiguity},
    volume={73}, author={van Straaten, Dirk and Fahr, René}, year={2021}, collection={Working
    Papers Dissertations} }'
  chicago: Straaten, Dirk van, and René Fahr. <i>Fighting Fire with Fire - Overcoming
    Ambiguity Aversion by Introducing More Ambiguity</i>. Vol. 73. Working Papers
    Dissertations, 2021.
  ieee: D. van Straaten and R. Fahr, <i>Fighting Fire with Fire - Overcoming Ambiguity
    Aversion by Introducing more Ambiguity</i>, vol. 73. 2021.
  mla: van Straaten, Dirk, and René Fahr. <i>Fighting Fire with Fire - Overcoming
    Ambiguity Aversion by Introducing More Ambiguity</i>. 2021.
  short: D. van Straaten, R. Fahr, Fighting Fire with Fire - Overcoming Ambiguity
    Aversion by Introducing More Ambiguity, 2021.
date_created: 2023-06-15T08:28:34Z
date_updated: 2023-07-05T07:27:57Z
intvolume: '        73'
language:
- iso: eng
project:
- _id: '8'
  grant_number: '160364472'
  name: 'SFB 901 - A4: SFB 901 - Empirische Analysen in Märkten für OTF Dienstleistungen
    (Subproject A4)'
- _id: '1'
  grant_number: '160364472'
  name: 'SFB 901: SFB 901: On-The-Fly Computing - Individualisierte IT-Dienstleistungen
    in dynamischen Märkten '
- _id: '2'
  name: 'SFB 901 - A: SFB 901 - Project Area A'
series_title: Working Papers Dissertations
status: public
title: Fighting Fire with Fire - Overcoming Ambiguity Aversion by Introducing more
  Ambiguity
type: working_paper
user_id: '477'
volume: 73
year: '2021'
...
---
_id: '1060'
abstract:
- lang: eng
  text: With a growing number of online reviews, it becomes increasingly important
    for customers and online review platforms to find groups of reviewers who write
    useful reviews. Customers who review local offline businesses such as restaurants
    can identify themselves as locals or travelers and thus implicitly assign themselves
    to a specific reviewer group. This study investigates the relationship between
    identifying as a local and the perceived usefulness of their online reviews. Using
    data from Yelp.com, we empirically test hypotheses derived from attribution theory.
    Our results suggest that neutral and negative reviews by locals tend to be perceived
    as more useful than reviews by travelers. Positive reviews by locals, however,
    are not perceived as more useful. These findings provide significant practical
    implications for online review platforms and local offline businesses.
author:
- first_name: Jürgen
  full_name: Neumann, Jürgen
  id: '32456'
  last_name: Neumann
- first_name: Dominik
  full_name: Gutt, Dominik
  id: '14368'
  last_name: Gutt
- first_name: Dennis
  full_name: Kundisch, Dennis
  id: '21117'
  last_name: Kundisch
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
citation:
  ama: 'Neumann J, Gutt D, Kundisch D, van Straaten D. When Local Praise Becomes Cheap
    Talk - Analyzing the Relationship between Reviewer Location and Usefulness of
    Online Reviews. In: <i>Proceedings of the Multikonferenz Wirtschaftsinformatik
    2018 (MKWI), Lüneburg, Germany</i>. ; 2018.'
  apa: Neumann, J., Gutt, D., Kundisch, D., &#38; van Straaten, D. (2018). When Local
    Praise Becomes Cheap Talk - Analyzing the Relationship between Reviewer Location
    and Usefulness of Online Reviews. In <i>Proceedings of the Multikonferenz Wirtschaftsinformatik
    2018 (MKWI), Lüneburg, Germany</i>.
  bibtex: '@inproceedings{Neumann_Gutt_Kundisch_van Straaten_2018, title={When Local
    Praise Becomes Cheap Talk - Analyzing the Relationship between Reviewer Location
    and Usefulness of Online Reviews}, booktitle={Proceedings of the Multikonferenz
    Wirtschaftsinformatik 2018 (MKWI), Lüneburg, Germany}, author={Neumann, Jürgen
    and Gutt, Dominik and Kundisch, Dennis and van Straaten, Dirk}, year={2018} }'
  chicago: Neumann, Jürgen, Dominik Gutt, Dennis Kundisch, and Dirk van Straaten.
    “When Local Praise Becomes Cheap Talk - Analyzing the Relationship between Reviewer
    Location and Usefulness of Online Reviews.” In <i>Proceedings of the Multikonferenz
    Wirtschaftsinformatik 2018 (MKWI), Lüneburg, Germany</i>, 2018.
  ieee: J. Neumann, D. Gutt, D. Kundisch, and D. van Straaten, “When Local Praise
    Becomes Cheap Talk - Analyzing the Relationship between Reviewer Location and
    Usefulness of Online Reviews,” in <i>Proceedings of the Multikonferenz Wirtschaftsinformatik
    2018 (MKWI), Lüneburg, Germany</i>, 2018.
  mla: Neumann, Jürgen, et al. “When Local Praise Becomes Cheap Talk - Analyzing the
    Relationship between Reviewer Location and Usefulness of Online Reviews.” <i>Proceedings
    of the Multikonferenz Wirtschaftsinformatik 2018 (MKWI), Lüneburg, Germany</i>,
    2018.
  short: 'J. Neumann, D. Gutt, D. Kundisch, D. van Straaten, in: Proceedings of the
    Multikonferenz Wirtschaftsinformatik 2018 (MKWI), Lüneburg, Germany, 2018.'
date_created: 2017-12-18T08:12:09Z
date_updated: 2022-01-06T06:50:47Z
ddc:
- '330'
department:
- _id: '276'
file:
- access_level: closed
  content_type: application/pdf
  creator: d0mi
  date_created: 2018-11-12T10:30:04Z
  date_updated: 2018-11-12T10:30:04Z
  file_id: '5485'
  file_name: MKWI_110 (1).pdf
  file_size: 668515
  relation: main_file
  success: 1
file_date_updated: 2018-11-12T10:30:04Z
has_accepted_license: '1'
language:
- iso: eng
project:
- _id: '1'
  name: SFB 901
- _id: '2'
  name: SFB 901 - Project Area A
- _id: '8'
  name: SFB 901 - Subproject A4
publication: Proceedings of the Multikonferenz Wirtschaftsinformatik 2018 (MKWI),
  Lüneburg, Germany
status: public
title: When Local Praise Becomes Cheap Talk - Analyzing the Relationship between Reviewer
  Location and Usefulness of Online Reviews
type: conference
user_id: '14368'
year: '2018'
...
---
_id: '115'
abstract:
- lang: eng
  text: 'Whenever customers have to decide between different instances of the same
    product, they are interested in buying the best product. In contrast, companies
    are interested in reducing the construction effort (and usually as a consequence
    thereof, the quality) to gain profit. The described setting is widely known as
    opposed preferences in quality of the product and also applies to the context
    of service-oriented computing. In general, service-oriented computing emphasizes
    the construction of large software systems out of existing services, where services
    are small and self-contained pieces of software that adhere to a specified interface.
    Several implementations of the same interface are considered as several instances
    of the same service. Thereby, customers are interested in buying the best service
    implementation for their service composition wrt. to metrics, such as costs, energy,
    memory consumption, or execution time. One way to ensure the service quality is
    to employ certificates, which can come in different kinds: Technical certificates
    proving correctness can be automatically constructed by the service provider and
    again be automatically checked by the user. Digital certificates allow proof of
    the integrity of a product. Other certificates might be rolled out if service
    providers follow a good software construction principle, which is checked in annual
    audits. Whereas all of these certificates are handled differently in service markets,
    what they have in common is that they influence the buying decisions of customers.
    In this paper, we review state-of-the-art developments in certification with respect
    to service-oriented computing. We not only discuss how certificates are constructed
    and handled in service-oriented computing but also review the effects of certificates
    on the market from an economic perspective.'
author:
- first_name: Marie-Christine
  full_name: Jakobs, Marie-Christine
  last_name: Jakobs
- first_name: Julia
  full_name: Krämer, Julia
  last_name: Krämer
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
- first_name: Theodor
  full_name: Lettmann, Theodor
  id: '315'
  last_name: Lettmann
  orcid: 0000-0001-5859-2457
citation:
  ama: 'Jakobs M-C, Krämer J, van Straaten D, Lettmann T. Certiﬁcation Matters for
    Service Markets. In: Marcelo De Barros, Janusz Klink,Tadeus Uhl TP, ed. <i>The
    Ninth International Conferences on Advanced Service Computing (SERVICE COMPUTATION)</i>.
    ; 2017:7-12.'
  apa: Jakobs, M.-C., Krämer, J., van Straaten, D., &#38; Lettmann, T. (2017). Certiﬁcation
    Matters for Service Markets. In T. P. Marcelo De Barros, Janusz Klink,Tadeus Uhl
    (Ed.), <i>The Ninth International Conferences on Advanced Service Computing (SERVICE
    COMPUTATION)</i> (pp. 7–12).
  bibtex: '@inproceedings{Jakobs_Krämer_van Straaten_Lettmann_2017, title={Certiﬁcation
    Matters for Service Markets}, booktitle={The Ninth International Conferences on
    Advanced Service Computing (SERVICE COMPUTATION)}, author={Jakobs, Marie-Christine
    and Krämer, Julia and van Straaten, Dirk and Lettmann, Theodor}, editor={Marcelo
    De Barros, Janusz Klink,Tadeus Uhl, Thomas PrinzEditor}, year={2017}, pages={7–12}
    }'
  chicago: Jakobs, Marie-Christine, Julia Krämer, Dirk van Straaten, and Theodor Lettmann.
    “Certiﬁcation Matters for Service Markets.” In <i>The Ninth International Conferences
    on Advanced Service Computing (SERVICE COMPUTATION)</i>, edited by Thomas Prinz
    Marcelo De Barros, Janusz Klink,Tadeus Uhl, 7–12, 2017.
  ieee: M.-C. Jakobs, J. Krämer, D. van Straaten, and T. Lettmann, “Certiﬁcation Matters
    for Service Markets,” in <i>The Ninth International Conferences on Advanced Service
    Computing (SERVICE COMPUTATION)</i>, 2017, pp. 7–12.
  mla: Jakobs, Marie-Christine, et al. “Certiﬁcation Matters for Service Markets.”
    <i>The Ninth International Conferences on Advanced Service Computing (SERVICE
    COMPUTATION)</i>, edited by Thomas Prinz Marcelo De Barros, Janusz Klink,Tadeus
    Uhl, 2017, pp. 7–12.
  short: 'M.-C. Jakobs, J. Krämer, D. van Straaten, T. Lettmann, in: T.P. Marcelo
    De Barros, Janusz Klink,Tadeus Uhl (Ed.), The Ninth International Conferences
    on Advanced Service Computing (SERVICE COMPUTATION), 2017, pp. 7–12.'
date_created: 2017-10-17T12:41:14Z
date_updated: 2022-01-06T06:51:02Z
ddc:
- '040'
department:
- _id: '77'
- _id: '355'
- _id: '179'
editor:
- first_name: Thomas Prinz
  full_name: Marcelo De Barros, Janusz Klink,Tadeus Uhl, Thomas Prinz
  last_name: Marcelo De Barros, Janusz Klink,Tadeus Uhl
file:
- access_level: closed
  content_type: application/pdf
  creator: florida
  date_created: 2018-03-21T13:04:12Z
  date_updated: 2018-03-21T13:04:12Z
  file_id: '1564'
  file_name: 115-JakobsKraemerVanStraatenLettmann2017.pdf
  file_size: 133531
  relation: main_file
  success: 1
file_date_updated: 2018-03-21T13:04:12Z
has_accepted_license: '1'
language:
- iso: eng
page: 7-12
project:
- _id: '1'
  name: SFB 901
- _id: '10'
  name: SFB 901 - Subprojekt B2
- _id: '11'
  name: SFB 901 - Subproject B3
- _id: '12'
  name: SFB 901 - Subproject B4
- _id: '8'
  name: SFB 901 - Subproject A4
- _id: '2'
  name: SFB 901 - Project Area A
- _id: '3'
  name: SFB 901 - Project Area B
publication: The Ninth International Conferences on Advanced Service Computing (SERVICE
  COMPUTATION)
status: public
title: Certiﬁcation Matters for Service Markets
type: conference
user_id: '477'
year: '2017'
...
---
_id: '404'
author:
- first_name: Dirk
  full_name: van Straaten, Dirk
  id: '10311'
  last_name: van Straaten
citation:
  ama: van Straaten D. <i>Kooperative Verhandlungen im duopolistischen Wettbewerb
    - eine spieltheoretische Analyse</i>. Universität Paderborn; 2014.
  apa: van Straaten, D. (2014). <i>Kooperative Verhandlungen im duopolistischen Wettbewerb
    - eine spieltheoretische Analyse</i>. Universität Paderborn.
  bibtex: '@book{van Straaten_2014, title={Kooperative Verhandlungen im duopolistischen
    Wettbewerb - eine spieltheoretische Analyse}, publisher={Universität Paderborn},
    author={van Straaten, Dirk}, year={2014} }'
  chicago: Straaten, Dirk van. <i>Kooperative Verhandlungen im duopolistischen Wettbewerb
    - eine spieltheoretische Analyse</i>. Universität Paderborn, 2014.
  ieee: D. van Straaten, <i>Kooperative Verhandlungen im duopolistischen Wettbewerb
    - eine spieltheoretische Analyse</i>. Universität Paderborn, 2014.
  mla: van Straaten, Dirk. <i>Kooperative Verhandlungen im duopolistischen Wettbewerb
    - eine spieltheoretische Analyse</i>. Universität Paderborn, 2014.
  short: D. van Straaten, Kooperative Verhandlungen im duopolistischen Wettbewerb
    - eine spieltheoretische Analyse, Universität Paderborn, 2014.
date_created: 2017-10-17T12:42:10Z
date_updated: 2022-01-06T07:00:08Z
language:
- iso: ger
project:
- _id: '1'
  name: SFB 901
- _id: '7'
  name: SFB 901 - Subprojekt A3
- _id: '2'
  name: SFB 901 - Project Area A
publisher: Universität Paderborn
status: public
title: Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische
  Analyse
type: mastersthesis
user_id: '477'
year: '2014'
...
