Representation Learning Using Multi-Task Deep Neural Networks for Semantic Cl...marujirou
Representation Learning Using Multi-Task Deep Neural Networks for Semantic Classification and Information Retrieval
Xiaodong Liu, Jianfeng Gao, Xiaodong He, Li Deng, Kevin Duh, Ye-Yi Wang
Representation Learning Using Multi-Task Deep Neural Networks for Semantic Cl...marujirou
Representation Learning Using Multi-Task Deep Neural Networks for Semantic Classification and Information Retrieval
Xiaodong Liu, Jianfeng Gao, Xiaodong He, Li Deng, Kevin Duh, Ye-Yi Wang
This document discusses using SQLite with C# in Windows Store apps. It shows how to create a SQLite database in local storage, define a data model class, perform CRUD operations like insert, update, delete. It also demonstrates using asynchronous methods and shows how to sync the local SQLite database with the roaming folder to enable roaming of app data across devices.
4. • C# や VB で SQL みたいな書き方ができる
• let、join、group、orderby など一通りのこ
とはできる
クエリー式
var array = new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
var q = from x in array
where x % 2 == 0
select x;
Dim array() = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
Dim q = From x In array
Where x Mod 2 = 0
Select x
7. すべては LINQ のために (2)
var people = new[]
{
new Person() { Name = “太郎", Age = 14, },
new Person() { Name = “花子", Age = 17, },
};
var q = people
.Where(x => x.Age <= 15)
.Select(x => new { x.Name });
var
コレクション初期化子
オブジェクト初期化子
拡張メソッド
ラムダ式
匿名クラス
8. すべては LINQ のために (3)
Dim people() =
{
New Person() With {.Name = “太郎", .Age = 15},
New Person() With {.Name = “花子", .Age = 14}
}
Dim q = people.
Where(Function(x) x.Age <= 15).
Select(Function(x) New With {x.Name})
var
コレクション初期化子
オブジェクト初期化子
拡張メソッド
ラムダ式
匿名クラス
9. • IEnumerable
– 配列やコレクションは IEnumerable を実装し
ている
• だから
– System.Linq.Enumerable
LINQ to Objects (1)
public static IEnumerable<TSource> Where<TSource>(
this IEnumerable<TSource> source,
Func<TSource, bool> predicate);
public static IEnumerable<TSource> Where<TSource>(
this IEnumerable<TSource> source,
Func<TSource, int, bool> predicate);
10. • System.Linq.Enumerable.Where
LINQ to Objects (2)
public static IEnumerable<TSource> Where<TSource>(
this IEnumerable<TSource> source,
Func<TSource, bool> predicate)
{
foreach (var item in source)
{
if (predicate(item))
{
yield return item;
}
}
}
11. • 要するに for や foreach になります
↑
ちょっと乱暴
LINQ to Objects (3)
12. • XElement 族
LINQ to XML (1)
var xml =
new XElement("People",
new XElement("Person",
new XElement(“Name”, “太郎"),
new XElement("Age", 15)
),
new XElement("Person",
new XElement(“Name”, “花子"),
new XElement("Age", 14)
)
);
13. LINQ to XML (2)
var q = xml.Descendants("Person")
.Where(x => (int)x.Element("Age") <= 15);
var q = xml.Descendants("Person")
.Where(x =>
((int?)x.Element("Age") ?? int.MaxValue) <= 15);
xml.Descendants("Person").Max(x =>
(int?)x.Element("Age"))
14. • VB は変態すぎてちょっと、、、
LINQ to XML (3)
Dim xml = _
<People>
<Person>
<Name>太郎</Name>
<Age>15</Age>
</Person>
<Person>
<Name>花子</Name>
<Age>14</Age>
</Person>
</People>
15. • VB は変態すぎてちょっと、、、
LINQ to XML (4)
Dim q = From x In xml...<Person>
Where x.<Age>.Value <= 15
Order By x.<Age>.Value
Select x.<Name>
16. • 見た目は LINQ to Objects とほぼ同じ
LINQ to SQL (1)
var db = new DataClasses1DataContext();
var q = from x in db.People
where x.Age <= 15
select x.Name;
var db = new DataClasses1DataContext();
var q = db.People
.Where(x => x.Age <= 15)
.Select(x => x.Name);
17. • テーブルとかは IQueryable
• だから
– System.Linq.Queryable
LINQ to SQL (2)
public static IQueryable<TSource> Where<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate);
public static IQueryable<TSource> Where<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, int, bool>> predicate);