Sequence

Find the longest arithmetic progression inside a sequence

一笑奈何 提交于 2021-02-10 05:07:37
问题 Suppose I have a sequence of increasing numbers, and I want to find the length of longest arithmetic progression within the sequence. Longest arithmetic progression means an increasing sequence with common difference, such as [2, 4, 6, 8] or [3, 6, 9, 12]. For example, for [5, 10, 14, 15, 17] , [5, 10, 15] is the longest arithmetic progression, with length 3; for [10, 12, 13, 20, 22, 23, 30] , [10, 20, 30] is the longest arithmetic progression with length 3; for [7, 10, 12, 13, 15, 20, 21] ,

Are SQL Server sequences thread safe?

戏子无情 提交于 2021-02-09 02:28:54
问题 Title is too broad but I couldn't find a more specific one, please feel free to change with better one. I have a table which is working with sequences instead identity. I have three producer applications which are concurrently insert into table, and a consumer application select from table whose status are not processed and then process them and finally update rows as processed. Consumer application has a rule that it does not process the row whose id ( identity column value ) is smaller than

Are SQL Server sequences thread safe?

此生再无相见时 提交于 2021-02-09 02:27:46
问题 Title is too broad but I couldn't find a more specific one, please feel free to change with better one. I have a table which is working with sequences instead identity. I have three producer applications which are concurrently insert into table, and a consumer application select from table whose status are not processed and then process them and finally update rows as processed. Consumer application has a rule that it does not process the row whose id ( identity column value ) is smaller than

Are SQL Server sequences thread safe?

戏子无情 提交于 2021-02-09 02:27:11
问题 Title is too broad but I couldn't find a more specific one, please feel free to change with better one. I have a table which is working with sequences instead identity. I have three producer applications which are concurrently insert into table, and a consumer application select from table whose status are not processed and then process them and finally update rows as processed. Consumer application has a rule that it does not process the row whose id ( identity column value ) is smaller than

Knative Eventing 之 Sequence 介绍

邮差的信 提交于 2021-02-09 00:58:05
在处理数据时,往往会涉及到一个数据需要进行多次加工,这时候我们一般是通过Pipeline的方式进行处理。那么在Knative Eventing中是否也能支持对一个事件进行分步骤多次处理? 这个还真有。从 0.7 版本开始,Knative Eventing中提供了一个 Sequence 资源模型,可用于事件Pipeline处理。 Sequence 定义 首先我们看一下Sequence Spec定义: apiVersion: messaging.knative.dev/v1alpha1 kind: Sequence metadata: name: test spec: channelTemplate: apiVersion: messaging.knative.dev/v1alpha1 kind: InMemoryChannel steps: - ref: apiVersion: serving.knative.dev/v1alpha1 kind: Service name: test reply: kind: Broker apiVersion: eventing.knative.dev/v1alpha1 name: test Sequence Spec包括3个部分: steps: 在step中定义了按照顺序执行的服务,每个服务会对应创建Subscription。

ICLR2020 | 深度自适应Transformer

人盡茶涼 提交于 2021-02-08 14:57:35
作者 | kaiyuan 整理 | NewBeeNLP 一篇来自ICLR2020,facebook人工智能实验室的论文,关于改进Transformer推理速度的。 论文地址: https://arxiv.org/abs/1910.10073 写在前面 大模型在困难任务上表现非常好,而小模型也可以在比较简单的任务上表现出色。但是目前大模型在应用简单任务时的运算量同复杂任务一样,这就导致了不必要的资源浪费,此外还会导致推理速度变慢。对此,提出了一种 depth-adaptive transformer ,可以在推理阶段针对不同的token自动选择在合适的层进行停止并输出,在不损失模型效果的同时大大提高推理速度。 Anytime Prediction 传统的transformer decoder,所有的token都需要经过N个block,且最后的分类器是唯一的。但是一些简单的任务并不需要推理如此多步,可能在第 层模型已经得出结果了,再往上走并没有意义,于是可以选择在第 层就输出,这称为 「动态计算(Dynamic Computation)」 , 并且,每一层的分类器 可以选择不同或者相同。接下去就是怎么去实现上面的想法,即对于每个输入token,如何自动确定其在哪一层退出?文中提出了两种策略: Aligned training 对齐训练会同时优化所有分类器,并假设当前状态之前的所有状态

Python 基础

大憨熊 提交于 2021-02-08 13:26:33
零基础学Python,本文是我个人的随心笔记,希望对你有益! 注释 : 单行:#……   多行:单引号(’’’) 双引号(”””) 基本数据类型 : 整数:int;浮点数:float(只有这两种);str:字符串;bool:布尔类型;complete:复数;list:列表;tuple:元组;set:集合;dict:字典 1 >>> type(2 ) 2 < class ' int ' > 3 >>> type(1.1 ) 4 < class ' float ' > 5 >>> type(1+1.1 ) 6 < class ' float ' > 7 >>> type(2/2 ) 8 < class ' float ' > 9 >>> type(2//2 ) 10 < class ' float ' > 11 >>> 2//2 12 1 13 >>> 2/2 14 1.0 15 >>> 2*2 16 4 基本类型 type()用来获取该表达式的数据类型 //: 除并取整 / :除之后商有一位小数 1 print ( " I " , end= " " ) 2 print ( " love " , end= '' ) 3 print ( " you ! " ) # I love you !(没有换行) 进制转换 1 >>> 0b10 # 二进制 2 2 3 >>> 0o10 # 八进制

Photoshop: How to handle numbering a large amount of disorganized items?

↘锁芯ラ 提交于 2021-02-08 11:40:39
问题 Suppose I have a large campsite like "seating" chart with several hundred lots sectioned off and outlined in photoshop. (each lot is roughly a square) Every lot needs to be numbered in photoshop and also editable in the future in case of changes. The lots are scattered and curve around the landscape so entering text in one layer seems out since for example lot 27 with be on the right and rotate 20 degrees to match the lot and yet lot 185 might be way over on the left at a far different angle.

Counting the number of consecutive years in r

我怕爱的太早我们不能终老 提交于 2021-02-08 08:52:06
问题 I have a vector A containing years: eg. A <- c(1978, 1979, 1980, 1981, 1984, 1987,1988,1989,1990,1991, 1992) I would like to be able to count the sequence of years before a year is missed out. So I would be looking for my answer to be : 4, 1, 6 I know about using rle for sequences of repeated numbers but not sure what to do here. 回答1: Assuming A is sorted: A <- c(1978, 1979, 1980, 1981, 1984, 1987,1988,1989,1990,1991, 1992) B <- cumsum(c(1, diff(A)>1)) rle(B)$lengths #[1] 4 1 6 来源: https:/

Recommented way to implement observable collections in Python?

痞子三分冷 提交于 2021-02-07 19:51:08
问题 I would like to have some observable collections/sequences in Python that allow me to listen on change events, like for adding new items or updating items: list = ObservableList(['a','b','c']) list.addChangeListener(lambda new_value: print(new_value)) list.append('a') # => should trigger the attached change listener data_frame = ObservableDataFrame({'x': [1,2,3], 'y':[10,20,30]}) data_frame.addChangeListener(update_dependent_table_cells) # => allows to only update dependent cells instead of a