GMAIL SMTP Relay Test using openssl(Windows Environment)

텔넷을 사용하여 SMTP 통신 테스트 방법(SMTP Test over Telnet) How to send email using simple SMTP commands via Gmail? 윈도우 openssl 설치(Installing openssl for windows) OpenSSL for Windows: Download Open the command window and go to the bin folder under the openssl downloaded run commands below


Then test to send email using… Read More »

2,335 total views, 1 views today

Terms-C4.5(Pseudo Decision Tree Guidance System)

related material: 『Data Mining』-written by Ian H. Witten Category: Divide and conquer technique: Decision Tree Divide and conquer algorithms for Decision Tree So called “Top-down Pseudo Decision Tree Guidance Method Developed & improved J.Ross Quinlan(wiki)  The scheme based on the information gain is identical with the ID3 scheme basically The scheme which use the gain ratio is… Read More »

2,310 total views, 4 views today

Terms-Information gain ratio

related material: 『Data Mining』-written by Ian H. Witten Category: Divide and conquer technique: Decision Tree Information Gain Ratio : In Decision Tree structure, the creation of child node for a property is decided by the most biggest information gain. But the information gain is tend to prefer the property from which the more properties can be… Read More »

2,467 total views, 3 views today

Terms – information, bit

related material: 『Data Mining』-written by Ian H, Witten Category: Divide and conquer technique Information Caculating (Decision Tree) Rules yes or no: one of both is 0 – information value = 0 yes & no: Same number –  max information value Information follows multistage property For instance, in case of info([2,3,4]) , a data might belonged to… Read More »

1,778 total views, 1 views today

B2 Setup with Spring

1. Source Loading -> Tomcat load web.xml initially. 2. web.xml 2.1 filters loaded -> Spring Configuration Load * Several DispatcherServlet could be loaded order by the load-on-startup value (precedent check),cause corresponding to the servlet mapping can take part of front-end controller 2.2. Set dispatcher URI 2.3. dispatcher for backend (Refer to the ContextLoaderListener) 3. web.xml… Read More »

4,542 total views, 3 views today

Workbench/J – Installing and Setup in Command Line

Integration between database & systems usually requires some multi purposed tool, which provides some way to implement the automation like the command line interface, batch commands and so forth. In such a case, Workbench/j could be a useful tool for that. By this tool, you can do anything what you want, so it’s one of… Read More »

2,870 total views, 5 views today

Beethoven – Piano sonata No.14 Op.27 “Moonlight”

For Beethoven and his contemporaries, refer to the Wikipeida  [Beethoven – Piano sonata No.14 Op.27 “Moonlight : Pf. Lang Lang”] Because of prejudicing “Beethoven is too difficult” , I put aside his work but suddenly come to open my ear to those so that I feel this work more strongly.One day, after running across the animation”Nodame Cantabile”,… Read More »

1,842 total views, 1 views today

[MSSQL] Desizing the Transaction log

for further steps To desize the transaction log of statistical  database which is just for the log-likely data and of which the transaction log grows very fast, set the recovery option for that database as “SIMPLE” and truncate the log. Due to the queries to desize the logs are slightly different by the version… Read More »

6,788 total views, 2 views today

[MSSQL] CPU Usage Analysis / Queries

When usage of CPU increased in Database Server, use this query to check which is the most exhausting one.

Use below to check the detail with SPID:

1,627 total views, 3 views today

1,627 total views, 3 views today