Martha Calvert (IMAGE) Virginia Tech Caption The researchers, which include Jacob Lahne in addition to Martha Calvert (pictured), will conduct a validation study in which the terms are grouped based on similarity. Credit Photo by Alex Hood for Virginia Tech. Usage Restrictions Credit Virginia Tech License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.