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Knowledge Networks Earns Patent for Innovative Internet Survey Technique


Thursday, October 04, 2007

Menlo Park, CA -- Knowledge Networks (KN), the leader in extraordinary quality and service in online research, has earned a patent for a survey sample management technique. The inventive method allows a sustained high level of sample integrity for clients while avoiding the need to burden members of KN's KnowledgePanel with excessive requests for survey participation.

"Developing cutting-edge approaches to accurate online research is core to the mission of Knowledge Networks," said Dr. Michel Floyd, Executive Vice President and Chief Technology Officer for Knowledge Networks. "This patent represents just one of many innovative techniques that we are continually testing and refining; it touches on two key elements of online research quality -- the ability to draw a number of balanced samples from the same pool of respondents, and the importance of maintaining a positive experience for panelists."

Frequently, a single sample pool drawn from an Internet panel is used to provide respondents for more than one survey. In a high-quality approach, panel members are removed from the pool after being assigned to a survey; this guards against "wearing out" any one panel member. The absence of these respondents, however, can skew later samples drawn from the same pool. The KN patent is for a computer-implemented technique that minimizes such skewing by adjusting the selection probabilities for panel members after each sample pull.

This approach also makes it less likely that members of the same household will be selected for the same survey.

The patent is #7,269,570, "Survey assignment method," invented by Karol P. Krotki. KN has several other patents pending related to its unique approaches to high quality online survey research.

Knowledge Networks specializes in high-quality survey research for leaders in government and academia. Working in close partnership with our clients, we provide expertise for social and behavioral science research and public policy development. Knowledge Networks excels in study design, complex samples, analytics, and custom panel creation; we deliver affordable, statistically valid online research through KnowledgePanel -- the only available probability-selected, nationally representative internet panel.

For more information, contact David Stanton (Vice President, Marketing Communications) at dstanton@knowledgenetworks.com or (908) 497-8040.



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