Jaccard is a surname.
Jaccard may also refer to:
The Jaccard index, also known as Intersection over Union and the Jaccard similarity coefficient, is a statistic used for gauging the similarity and diversity of sample sets. The Jaccard coefficient measures similarity between finite sample sets, and is defined as the size of the intersection divided by the size of the union of the sample sets:
USS Jaccard (DE-355) was a John C. Butler-class destroyer escort acquired by the U.S. Navy during World War II. The primary purpose of the destroyer escort was to escort and protect ships in convoy, in addition to other tasks as assigned, such as patrol or radar picket. Post-war, she returned home proudly with one battle star to her credit.
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A loom is a device used to weave cloth and tapestry. The basic purpose of any loom is to hold the warp threads under tension to facilitate the interweaving of the weft threads. The precise shape of the loom and its mechanics may vary, but the basic function is the same.
Weaving is a method of textile production in which two distinct sets of yarns or threads are interlaced at right angles to form a fabric or cloth. Other methods are knitting, crocheting, felting, and braiding or plaiting. The longitudinal threads are called the warp and the lateral threads are the weft or filling. The method in which these threads are inter-woven affects the characteristics of the cloth. Cloth is usually woven on a loom, a device that holds the warp threads in place while filling threads are woven through them. A fabric band which meets this definition of cloth can also be made using other methods, including tablet weaving, back strap loom, or other techniques without looms.
Jacquard is a French surname and may refer to:
Jacques Jaccard was an American film director, writer and actor whose achievements in cinema were mostly in silent film.
The Sørensen–Dice coefficient is a statistic used to gauge the similarity of two samples. It was independently developed by the botanists Thorvald Sørensen and Lee Raymond Dice, who published in 1948 and 1945 respectively.
Paul Jaccard was a professor of botany and plant physiology at the ETH Zurich. He studied at the University of Lausanne and ETH Zurich. He continued studies in Paris with Gaston Bonnier. He developed the Jaccard index of similarity and published it in 1901. He also introduced the use of the species-to-genus ratio in biogeography. In the 1920s, Paul Jaccard engaged in a dispute with the Finnish botanist and phytogeographer Alvar Palmgren over the interpretation of species-to-genus ratio, as evidence of competitive exclusion or attributable to random sampling.
In mathematics and computer science, a string metric is a metric that measures distance between two text strings for approximate string matching or comparison and in fuzzy string searching. A necessary requirement for a string metric is fulfillment of the triangle inequality. For example, the strings "Sam" and "Samuel" can be considered to be close. A string metric provides a number indicating an algorithm-specific indication of distance.
Richard Alonzo Jaccard was born in Troy, Missouri and lived in Manhattan, Kansas.
Mark Kenneth Jaccard is a professor of sustainable energy in the School of Resource and Environmental Management (REM) at Simon Fraser University, Vancouver, British Columbia, Canada. Dr. Jaccard develops and applies models that assess sustainability policies for energy and material.
The Fire Fighters is a 1927 American action film serial directed by Jacques Jaccard. The film is considered to be lost.
Fernand Alfred Jaccard was a Swiss football midfielder and manager. He was born in La Chaux-de-Fonds and died in Lutry.
Arthur Maillefer was a Swiss botanist and plant geographer.
The 1930–31 Swiss International Ice Hockey Championship was the 16th edition of the international ice hockey championship in Switzerland. HC Davos won the championship by defeating HC Rosey Gstaad in the final.
The 1931–32 Swiss International Ice Hockey Championship was the 17th edition of the international ice hockey championship in Switzerland. HC Davos won the championship by finishing first in the final round.
The 1930–31 Swiss National Ice Hockey Championship was the 21st edition of the national ice hockey championship in Switzerland. HC Davos won the championship by defeating Lycée Jaccard in the final.
The simple matching coefficient (SMC) or Rand similarity coefficient is a statistic used for comparing the similarity and diversity of sample sets.
James Jay Jaccard is an American psychologist and social work researcher. He is a Professor of Social Work at New York University's Silver School of Social Work. He received his Ph.D. from the University of Illinois at Urbana–Champaign in 1976. He helped to design the National Longitudinal Study of Adolescent to Adult Health. In 2016, he was inducted into the American Academy of Social Work and Social Welfare.