Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Wilcoxon Signed-Ranks Test for Matched Pairs

Wilcoxon Signed-Ranks Test for Matched Pairs

The Wilcoxon signed-rank test for matched pairs evaluates the null hypothesis by combining the ranks of differences with their signs. It essentially tests whether the median of the differences in a population of matched pairs is zero. Since the test incorporates more information than the sign test, it generally yields more trustable conclusions. This test also does not require the data to follow a normal distribution, but two conditions must be met for it to be applicable: (1) the data must...

Competition

Competition

When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. Even if two competing individuals or populations do not interact directly, the overall fitness of both competitors is lowered as a result of not having full access to the limited resource.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Complete genome sequence of Brucella melitensis 133, an isolate of biovar 1 of sequence type 32.

Journal of bacteriology·2012

Same author

The role of prolactin receptor in GH signaling in breast cancer cells.

Molecular endocrinology (Baltimore, Md.)·2012

Same author

Green tea powder and Lactobacillus plantarum affect gut microbiota, lipid metabolism and inflammation in high-fat fed C57BL/6J mice.

Nutrition & metabolism·2012

Same author

[Effects of early application of Tuina treatment on quadriceps surface myoelectricity in patients after total knee arthroplasty: a randomized controlled trial].

Zhong xi yi jie he xue bao = Journal of Chinese integrative medicine·2012

Same author

A minimally invasive postero-medial approach with suture anchors for isolated tibial avulsion fracture of the posterior cruciate ligament.

The Knee·2012

Same author

The chloride channel/transporter Slc26a9 regulates the systemic arterial pressure and renal chloride excretion.

Journal of molecular medicine (Berlin, Germany)·2012

Search research articles

Related Experiment Video

Updated: Nov 7, 2025

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

Published on: October 11, 2018

Privacy-Preserving Task-Matching and Multiple-Submissions Detection in Crowdsourcing.

Jie Xu^1,2, Zhaowen Lin^2,3, Jun Wu^2,3

¹The School of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 100876, China.

Sensors (Basel, Switzerland)

|April 30, 2021

Summary

This study introduces a privacy-preserving crowdsourcing scheme using inner-product cryptography and proof of knowledge (PoK) to securely match workers to tasks and prevent duplicate submissions, enhancing data integrity and worker privacy.

Keywords:

anonymous multi-submission detection inner-product encryption task-matching zero-knowledge proof

More Related Videos

Author Spotlight: Impact of Intergenic Interactions on Disease-Identifying Dark Biomarkers

Author Spotlight: Impact of Intergenic Interactions on Disease-Identifying Dark Biomarkers

Published on: March 1, 2024

Methods to Test Visual Attention Online

Methods to Test Visual Attention Online

Published on: February 19, 2015

Related Experiment Videos

Last Updated: Nov 7, 2025

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

Published on: October 11, 2018

Author Spotlight: Impact of Intergenic Interactions on Disease-Identifying Dark Biomarkers

Author Spotlight: Impact of Intergenic Interactions on Disease-Identifying Dark Biomarkers

Published on: March 1, 2024

Methods to Test Visual Attention Online

Methods to Test Visual Attention Online

Published on: February 19, 2015

Area of Science:

Computer Science
Information Security
Human-Computer Interaction

Background:

Crowdsourcing offers efficient data aggregation but faces significant privacy risks.
Sensitive task content and worker attributes are vulnerable during task matching and submission.
Anonymity can lead to fraudulent multiple submissions for rewards.

Purpose of the Study:

To develop a privacy-preserving scheme for task matching and multiple-submission detection in crowdsourcing.
To protect task confidentiality and worker attribute privacy.
To ensure fair task distribution and prevent reward abuse.

Main Methods:

Utilized multi-authority inner-product encryption for fine-grained, attribute-based task matching.
Implemented a proof of knowledge (PoK) protocol to restrict workers to a single submission per task.
Ensured unlinkability between different tasks performed by the same worker.

Main Results:

The proposed scheme effectively protects task confidentiality and worker privacy.
Fine-grained task matching based on worker attributes is achieved.
Multiple submissions for a single task are successfully detected without revealing worker identity.

Conclusions:

The developed scheme is effective and feasible for enhancing privacy and security in crowdsourcing.
It addresses key challenges in sensitive data handling and reward integrity.
Enables secure and efficient crowdsourcing operations.