set-union

OWL intersection vs union

由 ∥☆過路亽．° 提交于 2019-12-24 07:37:44
问题 Given the following triples, are the domain and range a union or intersection or something else? <http://www.stackoverflow.com/questions/ask> rdfs:domain <http://stackoverflow.com/questions/tagged/rdf> . <http://www.stackoverflow.com/questions/ask> rdfs:domain <http://stackoverflow.com/questions/tagged/owl> . <http://www.stackoverflow.com/questions/ask> rdfs:domain <https://www.w3.org/TR/owl-ref/#Boolean> . <http://www.stackoverflow.com/questions/ask> rdfs:range <http://stackoverflow.com

Union of multiple sets in python

由 微笑、不失礼 提交于 2019-12-21 03:22:09
问题 [[1, '34', '44'], [1, '40', '30', '41'], [1, '41', '40', '42'], [1, '42', '41', '43'], [1, '43', '42', '44'], [1, '44', '34', '43']] I have a list of lists. My aim is to check whether any one sublist has anything in common with other sublists(excluding the first index object to compare). If it has anything in common then unify those sublists. For example, for this example my final answer should be something like: [[1, '34, '44', '40' '30', '41', '42', '43']] I can understand that I should

Union of All Intersecting Sets

由 浪子不回头ぞ 提交于 2019-12-13 14:09:32
问题 Given a list of objects with multiple attributes I need to find the list of sets created by a union of all intersecting subsets. Specifically these are Person objects, each with many attributes. I need to create a list of 'master' sets based on a handful of unique identifiers such as SSN, DLN, etc. For instance, if Person A and Person B have the same SSN they create a set i. Then if Person B and C have the same DLN, they create a set ii. Person D and E have the same SSN but it (and all other

Python union of sets raises TypeError

由 五迷三道 提交于 2019-12-12 20:18:10
问题 Consider a sequence of sets: >>> [{n, 2*n} for n in range(5)] [{0}, {1, 2}, {2, 4}, {3, 6}, {8, 4}] Passing them directly into the union method yields the correct result: >>> set().union({0}, {1, 2}, {2, 4}, {3, 6}, {8, 4}) {0, 1, 2, 3, 4, 6, 8} But passing them as a list or generator expression results in a TypeError: >>> set().union( [{n, 2*n} for n in range(5)] ) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: unhashable type: 'set' >>> set().union({n, 2*n

What is the most efficient way to ge the top N items of the union of M sorted sets

由 こ雲淡風輕ζ 提交于 2019-12-08 12:39:02
问题 Say you have 4 sorted sets with thousands and thousands of keys and scores. Since they are sorted sets, getting the top items can ben done in logaritmic time complexity. The easy way would be to take the union of the sets, and then get the top items. But doing so is at least linear to the sum of all items in all sets. The best way I could think of is this: Take the top N items from every set Find the item with the lowest rank and the higest score for that rank. Devide that score by the number

Union of multiple sets in python

由 五迷三道 提交于 2019-12-03 23:21:30
[[1, '34', '44'], [1, '40', '30', '41'], [1, '41', '40', '42'], [1, '42', '41', '43'], [1, '43', '42', '44'], [1, '44', '34', '43']] I have a list of lists. My aim is to check whether any one sublist has anything in common with other sublists(excluding the first index object to compare). If it has anything in common then unify those sublists. For example, for this example my final answer should be something like: [[1, '34, '44', '40' '30', '41', '42', '43']] I can understand that I should convert the sublists to sets and then use union() and intersection() operation. But what I am stuck with

Pythonic Way to Create Union of All Values Contained in Multiple Lists

由 泄露秘密 提交于 2019-11-26 22:36:40
I have a list of lists: lists = [[1,4,3,2,4], [4,5]] I want to flatten this list and remove all duplicates; or, in other words, apply a set union operation: desired_result = [1, 2, 3, 4, 5] What's the easiest way to do this? (I'm forced to use Python 2.4 for this project) sth set.union does what you want: >>> results_list = [[1,2,3], [1,2,4]] >>> results_union = set().union(*results_list) >>> print(results_union) set([1, 2, 3, 4]) You can also do this with more than two lists. Since you seem to be using Python 2.5 (it would be nice to mention in your Q if you need an A for versions != 2.6, the

Pythonic Way to Create Union of All Values Contained in Multiple Lists

由 房东的猫 提交于 2019-11-26 08:19:42
问题 I have a list of lists: lists = [[1,4,3,2,4], [4,5]] I want to flatten this list and remove all duplicates; or, in other words, apply a set union operation: desired_result = [1, 2, 3, 4, 5] What\'s the easiest way to do this? (I\'m forced to use Python 2.4 for this project) 回答1: set.union does what you want: >>> results_list = [[1,2,3], [1,2,4]] >>> results_union = set().union(*results_list) >>> print(results_union) set([1, 2, 3, 4]) You can also do this with more than two lists. 回答2: Since
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