Improving Information Retrieval: Relevance Feedback & Query Expansion
In the realm of information retrieval, enhancing search accuracy is paramount. This lecture delves into the strategies of relevance feedback and query expansion to refine search results. Learn about interactive relevance feedback, the Rocchio feedback method, query expansion techniques, and ways to boost recall in search. Explore methods for improving the number of relevant documents returned to users through local and global analyses. Elevate your understanding of information retrieval with these essential concepts.
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Presentation Transcript
AMERICA IN THE 1930S 5thGrade
STANDARDS SS5H5 The student will explain how the Great Depression and New Deal affected the lives of millions of Americans. A. Discuss the Stock Market Crash of 1929, Herbert Hoover, Franklin Roosevelt, the Dust Bowl, and soup kitchens. B. Analyze the main features of the New Deal; include the significance of the Civilian Conservation Corps, the Works Progress Administration, and the Tennessee Valley Authority. C. Discuss important cultural elements of the 1930s; include Duke Ellington, Margaret Mitchell, and Jesse Owens.
ESSENTIAL QUESTIONS What is the Great Depression? What is the New Deal? How did the Great Depression and the New Deal affect millions of Americans?
WHAT WAS THE DUST BOWL? The dust bowl was a time of extreme drought on the Great Plains. Dust and dirt from the dry top soil would turn into huge dark clouds that would cover the Great Plains. Many families left their farms on the Great Plains and headed further West. Unfortunately, they still faced many hardships here as well.
WHATS THE DEAL WITH THE NEW DEAL? Civilian Conservation Corps Works Progress Administration Tennessee Valley Authority (TVA)
CIVILIAN CONSERVATION CORPS The CCC was a New Deal program that organized unemployed males between the ages of 18-25 and put them to work helping conserve the country's natural resources. The organization did a lot of work in national parks and soil conservation.
WORKS PROGRESS ADMINISTRATION Of all of Roosevelt s New Deal programs, the Works Progress Administration (WPA) is the most famous, because it affected so many people s lives. Roosevelt s vision of a work-relief program employed more than 8.5 million people. For an average salary of $41.57 a month, WPA employees built bridges, roads, public buildings, public parks and airports.
TENNESSEE VALLEY AUTHORITY TVA was asked to tackle important problems facing the Tennessee Valley, such as flooding, providing electricity to homes and businesses, and replanting forests. Other TVA responsibilities written in the act included improving travel on the Tennessee River and helping develop the region's business and farming.
THE NEW DEAL What was the main purpose of all of the New Deal programs?
THE NEW DEAL TO GET PEOPLE JOBS!!! This would help boost our economy and bring us out of the Great Depression.
JESSIE OWENS A young track star from Ohio State University. Jessie competed in the Olympics and made many world records. Jessie gave Americans hope during these hard times.
DUKE ELLINGTON A famous Jazz musician and composer. http://www.dukeelling ton.com/home.html
MARGARET MITCHELL Mitchell Mitchell was the author of Gone With the Wind, one of the most popular books of all time. The novel was published in 1936 and sold more than a million copies in the first six months, a phenomenal feat considering it was the Great Depression era. The novel was set during the Civil War (1861-65) Shortly after the book's publication the movie rights were sold to David O. Selznick for $50,000, the highest amount ever paid for a manuscript up to that time. In 1937 Margaret Mitchell was awarded the Pulitzer Prize. Margaret Mitchell was a Georgia resident! http://www.youtube.com/watc h?v=8mM8iNarcRc
