hierarchical-data

问题 I building a test-driven application that will sort a flat file into a parent-child-hierarchy. And now I want to create a pretty generic test for my own sorting. For that I want to generate some test data, which I then sort. The object that will be sorted will look something like this: public interface IHierarchicalUnitWithChildren { string Id { get; } string ParentId { get; } IList<IHierarchicalUnitWithChildren> Children { get; set; } } But I don't want to create the test-object myself. I

问题 I want to make a Name Entity Recognizer using wikipedia Data, I need to get all the super classes of a word to see in which category (Place, Human, Organization or None) the word is. I surfed the Internet a lot and find some pages like : SPARQL query to find all sub classes and a super class of a given class which when I execute the query results "No matching records found" even with the word mentioned in the page and trying other namespaces. and: Extracting hierarchy for dbpedia entity using

问题 In a treeview you can retrieve the level of an item. I am trying to accomplish the same thing with the given input being an object. The XML data I will use for this example would be something like the following <?xml version="1.0" encoding="utf-8" ?> <Testing> <Numbers> <Number val="1"> <Number val="1.1"> <Number val="1.1.1"> <Number val="1.1.2" /> <Number val="1.1.3" /> <Number val="1.1.4" /> </Number> </Number> <Number val="1.2" /> <Number val="1.3" /> <Number val="1.4" /> </Number> <Number

问题 I have created a simple data.tree through importing a folder structure with files inside of it. if (!require("pacman")) install.packages("pacman") pacman::p_load_gh("trinker/pathr") library(pathr) library(data.tree) folder_structure <- pathr::tree(path = "/Users/username/Downloads/top_level/", use.data.tree = T, include.files = T) Now, I would like to convert the object folder_structure into a data.frame with one row per folder and a column that specifies how many files each folder contains.

问题 I have a table like this: id name parent_id I then want to select certain rows based on their id, so something like this: SELECT * FROM TABLE WHERE id IN ('1', '5', '8', '9', '35') I want to, from this query, also show the parent/child relationship, like: id parent ----------- 1 0 5 1 8 0 9 8 35 9 So the final output would look something like this: 1 --5 8 --9 ----35 Do I do this outside of mysql, i have tried using arrays, but can't figure it out, or Do I do it inside MYSQL, which i don't

问题 Using Oracle 11G (not R2) database, we need to create reports that show which Leadership Committe an individual's reporting structure belongs to. At a high level, we determine an individual's presence on the board by locating the employee ID in table board_members. The board_members table has a position ID that can be used to access board_positions, and from there we can determine if the position is on the leadership committee. (Samples below.) For any employee who is on the leadership

问题 Is it possible to have a pure hierarchical wpf data grid? Now there are 3 possible solutions dicussed over the internet ... GroupStyle TreeListView instead of DataGrid RowDetailsTemplate Now all 3 are not useful in my case as they each have limitations. GroupStyle provides grouped row presenters but their parent is simply GroupItem . This is where my data source is different. In my case the parent of the grouped items will be of the same type of item. e.g. Folder class has List<Folders>

问题 I have been puzzling with this problem for days, without any luck. I hope some of you can help. From my database I get a list of files, which various information attached, including a virtual path. Some typical data is: Array ( [0] => Array ( [name] => guide_to_printing.txt [virtual_path] => guides/it ) [1] => Array ( [name] => guide_to_vpn.txt [virtual_path] => guides/it ) [2] => Array ( [name] => for_new_employees.txt [virtual_path] => guides ) ) I wish to convert this into a hierarchical

问题 I have a hierarchical database strucutre, e.g. columns ID and PARENT_ID defined for each row, with the top level rows having a NULL PARENT_ID . I have all the relationships from this table flattened into another table, e.g. if there were three records in a single hierarchy of grandparent, parent, grandchild, there would be 3 records: **ANCESTOR, DESCENDANT** grantparent, parent grandparent, grandchild parent, grandchild Rather than execute a hierarchical query to determine that the grandchild

问题 I'm trying to create a structure to store and read dogs pedigree using php and mysql. I found on stackoverflow this kind of structure, and it seems to be efficient: Inbreeding-immune database structure TABLE people (id, name, father_id, mother_id ); TABLE relatives ( person_id, ancestor_id ); There is a working example here: http://sqlfiddle.com/#!2/0bd39/10 Is it possible to retrieve simply a ordered tree or a subtree (for example 4 or 5 generations) starting by an id? EDIT I'm trying to get