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[4]: 114 A DataFrame is a 2-dimensional data structure of rows and columns, similar to a spreadsheet, and analogous to a Python dictionary mapping column names (keys) to Series (values), with each Series sharing an index. [4]: 115 DataFrames can be concatenated together or "merged" on columns or indices in a manner similar to joins in SQL.
The two most common representations are column-oriented (columnar format) and row-oriented (row format). [ 1 ] [ 2 ] The choice of data orientation is a trade-off and an architectural decision in databases , query engines, and numerical simulations. [ 1 ]
The design matrix has dimension n-by-p, where n is the number of samples observed, and p is the number of variables measured in all samples. [4] [5]In this representation different rows typically represent different repetitions of an experiment, while columns represent different types of data (say, the results from particular probes).
Lebanon is one of the only seven countries in the world in which the value of the stock market increased in 2008. [48] The Lebanese economy experienced continued resilience, growing 8.5 percent in 2008, 7 percent in 2009 and 8.8% in 2010. However, Lebanon's debt to GDP ratio remained one of the highest in the world. [49]
This is a list of cities and towns in Lebanon [1] distributed according to district. There are total 1000 districts. 56.21% of the population lives in 19 cities and towns, which gives the average 2,158 people per town.
Italian Army Mechanized Brigade "Granatieri di Sardegna" squad patrolling the Blue Line during the COVID-19 pandemic. The United Nations Interim Force in Lebanon (Arabic: قوة الأمم المتحدة المؤقتة في لبنان, Hebrew: כוח האו"ם הזמני בלבנון), or UNIFIL (Arabic: يونيفيل, Hebrew: יוניפי״ל), is a United Nations peacekeeping mission ...
In April 2003, the Memphis Zoo became one of only four U.S. zoos to exhibit the giant panda on a long term loan basis. One male and one female giant panda ("Ya Ya" and "Le Le") share their 3-acre (1.2 ha) home with several other species native to China, in the first Memphis Zoo exhibit to be built as a zoogeographical exhibit.
Lebanon, [b] officially the Republic of Lebanon, [c] is a country in the Levant region of West Asia. Situated at the crossroads of the Mediterranean Basin and the Arabian Peninsula, [11] it is bordered by Syria to the north and east, Israel to the south, and the Mediterranean Sea to the west; Cyprus lies a short distance from the coastline ...