8th International Conference on ^{Big Data Analytics & Data Mining} September 18-19, 2019 London ,UK

San Francisco is the 13^th most populous city in the United States, and the 4^th most populous in California, with 884,363 residents as of 2017. It covers an area of about 46.89 square miles (121.4 km2), mostly at the north end of the San Francisco Peninsula in the San Francisco Bay Area, making it the second most densely populated large US city, and the fifth most densely populated U.S country, behind only four of the five New York City boroughs. San Francisco is also part of the fifth most populous primary statistical area in the United States

The San Francisco was the country's 3^rd largest urban economy as of 2017, with a GDP of $878 billion. San Francisco CSA had the highest GDP per capita in 2017, at $99,347 per capita. San Francisco is ranked 8th in the world and 2nd in the United States on the Global Financial Centres Index as of 2018. As of 2017, San Francisco is the highest rated American city on world liveability rankings.

Tourism is one of the city's largest private-sector industries, accounting for more than one out of seven jobs in the city. The city's frequent portrayal in music, film, and popular culture has made the city and its landmarks recognizable worldwide. In 2016, it attracted the fifth-highest number of foreign tourists of any city in the United States. and is one of the top-20 destination cities worldwide by international visitor spending. More than 25 million visitors arrived in San Francisco in 2016, adding US$9.96 billion to the economy. With a large hotel infrastructure and a world-class convention facility in the Moscone Center, San Francisco is a popular destination for annual conventions and conferences.