alexey-milovidov

milovidov@milovidov-xenial:~$ clickhouse-client 
ClickHouse client version 1.1.53996.
Connecting to localhost:9000.
Connected to ClickHouse server version 1.1.53996.

:) CREATE TABLE IF NOT EXISTS `employee` (
:-]   `empid` Int32,
:-]   `deptid` Int32,
:-]   `salary` Int64
:-] ) ENGINE = Memory;

kirang89

import sqlalchemy
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, String, ForeignKey
from sqlalchemy.orm import sessionmaker, relationship


engine = sqlalchemy.create_engine('sqlite:///:memory:')
Base = declarative_base()

luw2007

词的分类

• 实词：名词、动词、形容词、状态词、区别词、数词、量词、代词
• 虚词：副词、介词、连词、助词、拟声词、叹词。

ICTPOS3.0词性标记集

n 名词

nr 人名

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD