< 2025年3月 > 日 一 二 三 四 五 六 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5

导航

• 博客园
• 首页
• 新随笔
• 新文章
• 联系
• 管理

• 随笔 - 754
• 文章 - 38
• 评论 - 0
• 阅读 - 54032

12 2024 档案

• VirtuaBox - difference between NAT and Bridged Adapter
  摘要：In VirtualBox, the network modes NAT and Bridged Adapter control how the virtual machine (VM) connects to the external network and interacts with the 阅读全文
  posted @ 2024-12-31 20:03 ZhangZhihuiAAA 阅读(4) 评论(0) 推荐(0) 编辑
• Virtualbox - EFI system partition size
  摘要：The size of an EFI System Partition (ESP) typically depends on the operating system and the requirements of the system, but there are some general gui 阅读全文
  posted @ 2024-12-30 23:07 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0) 编辑
• VirtualBox - virtualbox invalid settings detected （发现无效设置）
  摘要：Default machine folder is missing. 阅读全文
  posted @ 2024-12-30 21:54 ZhangZhihuiAAA 阅读(61) 评论(0) 推荐(0) 编辑
• Win10 - 安装虚拟机设置
  摘要：在Windows 10上安装虚拟机需要进行一些特定的设置，以确保虚拟机能够正常运行。以下是详细的步骤和注意事项： 1. 启用虚拟化支持 虚拟化是运行虚拟机的基础，需要确保你的CPU支持虚拟化，并且在BIOS/UEFI中启用它。 检查CPU虚拟化支持 打开任务管理器（按 Ctrl + Shift + 阅读全文
  posted @ 2024-12-30 16:30 ZhangZhihuiAAA 阅读(81) 评论(0) 推荐(0) 编辑
• Datahub - how to add custom data source
  摘要：To add a custom data source to DataHub, a metadata management and data discovery platform, you'll typically need to create a custom plugin or connecto 阅读全文
  posted @ 2024-12-30 14:07 ZhangZhihuiAAA 阅读(23) 评论(0) 推荐(0) 编辑
• Python how to use dmPython
  摘要：import dmPython def connect_dm_database(): # 数据库连接参数 password = 'xxxxxxxxxx' # 数据库密码 server = '127.0.0.1' # 数据库服务器IP port = 5236 # 数据库端口号，默认为5236 try: 阅读全文
  posted @ 2024-12-30 12:47 ZhangZhihuiAAA 阅读(8) 评论(0) 推荐(0) 编辑
• Python - sys.modules
  摘要：In Python, sys.modules is a dictionary that maps module names to the modules themselves. This dictionary is used internally by the Python interpreter 阅读全文
  posted @ 2024-12-29 15:54 ZhangZhihuiAAA 阅读(15) 评论(0) 推荐(0) 编辑
• Pip - install dmPython
  摘要：PS D:\ZhangZhihuiTemp> pip install dmPython ERROR: Could not find a version that satisfies the requirement dmPython (from versions: none) ERROR: No ma 阅读全文
  posted @ 2024-12-27 13:37 ZhangZhihuiAAA 阅读(45) 评论(0) 推荐(0) 编辑
• Python - Check the path of the Python explainer in Windows
  摘要：PS D:\ZhangZhihuiTemp> python Python 3.13.1 (tags/v3.13.1:0671451, Dec 3 2024, 19:06:28) [MSC v.1942 64 bit (AMD64)] on win32 Type "help", "copyright" 阅读全文
  posted @ 2024-12-27 10:59 ZhangZhihuiAAA 阅读(14) 评论(0) 推荐(0) 编辑
• Data Virtualization - Data Federation
  摘要：Schema mapping A schema is a blueprint that defines how data is organized within a database. Data sources often have different schemas, meaning they o 阅读全文
  posted @ 2024-12-24 17:05 ZhangZhihuiAAA 阅读(8) 评论(0) 推荐(0) 编辑
• Graph - Study Notes 7
  摘要：cosine similarity user segmentation, community detection apoc.agg.statistics graphlet betweenness centrality 阅读全文
  posted @ 2024-12-20 17:30 ZhangZhihuiAAA 阅读(2) 评论(0) 推荐(0) 编辑
• Graph - Study Notes 6
  摘要：bipartite co-occurrence network LPA Jaccard similarity coefficient node similarity topK, similarityCutoff gds.nodeSimilarity gds.nodeSimilarity LPA gd 阅读全文
  posted @ 2024-12-19 17:05 ZhangZhihuiAAA 阅读(4) 评论(0) 推荐(0) 编辑
• Graph - Study Notes 5
  摘要：gds.graph.project gds.degree gds.wcc gds.graph.list, gds.graph.drop 阅读全文
  posted @ 2024-12-18 22:27 ZhangZhihuiAAA 阅读(1) 评论(0) 推荐(0) 编辑
• Graph - Study Notes 4
  摘要：community detection centrality PageRank APOC GDS graph catalog gds.graph.project WCC SCC LCC 阅读全文
  posted @ 2024-12-17 21:30 ZhangZhihuiAAA 阅读(2) 评论(0) 推荐(0) 编辑
• Graph - Study Notes 3
  摘要：profile Both executing plans are exactly the same. cardinality cardinality 阅读全文
  posted @ 2024-12-17 10:58 ZhangZhihuiAAA 阅读(2) 评论(0) 推荐(0) 编辑
• Graph - Study Notes 2
  摘要：select all delete all Download file users.csv from https://github.com/tomasonjo/graphs-network-science/tree/main/dataset/twitter and put it in ~/neo4j 阅读全文
  posted @ 2024-12-16 16:36 ZhangZhihuiAAA 阅读(6) 评论(0) 推荐(0) 编辑
• Graph - Study Notes 1
  摘要：community detection, clustering bipartite graph monopartite, bipartite LPG PageRank 阅读全文
  posted @ 2024-12-15 22:34 ZhangZhihuiAAA 阅读(3) 评论(0) 推荐(0) 编辑
• Neo4j - Run a docker container
  摘要：zzh@ZZHPC:~$ docker pull neo4j:latest How to use this image You can start a Neo4j container like this: docker run \ --publish=7474:7474 --publish=7687 阅读全文
  posted @ 2024-12-15 19:58 ZhangZhihuiAAA 阅读(13) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 9
  摘要：data virtualization metadata business metadata technical metadata, operational metadata Informatica, Alation Denodo, Informatica, Snowflake, NetApp, T 阅读全文
  posted @ 2024-12-14 21:47 ZhangZhihuiAAA 阅读(2) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 8
  摘要：data profiling digital exhaust AutoSQL K-means, SOM MDM DataOps, ModelOps, DevOps 阅读全文
  posted @ 2024-12-14 17:39 ZhangZhihuiAAA 阅读(2) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 7
  摘要：data cleansing, data transformation feature engineering PCA, ICA, LDA PMML, ONNX, PFA 阅读全文
  posted @ 2024-12-13 15:17 ZhangZhihuiAAA 阅读(2) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 6
  摘要：knowledge catalog, knowledge graph business metadata data lineage, data provenance Active Metadata knowledge graph, semantic network - GraphQL is a qu 阅读全文
  posted @ 2024-12-12 20:33 ZhangZhihuiAAA 阅读(4) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 5
  摘要：metadata change better not copy data Data Governance data inconsistencies data access rules and policies AOD build quality analysis and remediation na 阅读全文
  posted @ 2024-12-12 16:14 ZhangZhihuiAAA 阅读(1) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 4
  摘要：bitemporal delta lake ODPi, OMAG, OMRS, Egeria 阅读全文
  posted @ 2024-12-11 20:12 ZhangZhihuiAAA 阅读(1) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 3
  摘要：Vendor and open source tools Data fabric solutions: IBM Cloud Pak NetApp TIBCO HPE Denodo Informatica Talend K2view Cinchy Stardog 阅读全文
  posted @ 2024-12-11 00:48 ZhangZhihuiAAA 阅读(3) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 2
  摘要： 阅读全文
  posted @ 2024-12-10 21:53 ZhangZhihuiAAA 阅读(3) 评论(0) 推荐(0) 编辑
• Data Fabric - Study Notes 1
  摘要：TOGAF, or The Open Group Architecture Framework, is a framework and methodology for designing, planning, and implementing an enterprise's IT architect 阅读全文
  posted @ 2024-12-10 16:41 ZhangZhihuiAAA 阅读(4) 评论(0) 推荐(0) 编辑
• PostgreSQL - Study Notes 7
  摘要：Full text search Searching with LIKE: LIKE is case-sensitive. iLIKE is case-insensitive. TSVECTOR, TSQUERY, ts_rank(): Websearch: select plainto_tsque 阅读全文
  posted @ 2024-12-10 08:52 ZhangZhihuiAAA 阅读(3) 评论(0) 推荐(0) 编辑
• PostgreSQL - Study Notes 6
  摘要：CTEs (Common Table Expressions): Not materialized, because it is used only once. Explicitly creating the CTE as not materialized looks having better p 阅读全文
  posted @ 2024-12-09 08:07 ZhangZhihuiAAA 阅读(1) 评论(0) 推荐(0) 编辑
• PostgreSQL - Study Notes 5
  摘要：Cross join: Cross join is the default for an unqualified join. chr() Grouping: any_value() array_agg() json_agg(), jsonb_agg() bool_and() bool_or() fi 阅读全文
  posted @ 2024-12-08 18:57 ZhangZhihuiAAA 阅读(2) 评论(0) 推荐(0) 编辑
• PostgreSQL - Study Notes 4
  摘要：Inner join is the default join. Outter join has three categories: left join, right join and full join. starts_with() Lateral join: lateral Lateral joi 阅读全文
  posted @ 2024-12-08 10:13 ZhangZhihuiAAA 阅读(5) 评论(0) 推荐(0) 编辑
• PostgreSQL - Study Notes 3
  摘要：ctid What data type should you use for your primary keys? Integers or UUIDs? In 98% of use cases, you should favor integer types. When we are over int 阅读全文
  posted @ 2024-12-05 22:33 ZhangZhihuiAAA 阅读(2) 评论(0) 推荐(0) 编辑
• PostgreSQL - Study Notes 2
  摘要：inet The essential difference between inet and cidr data types is that inet accepts values with nonzero bits to the right of the netmask, whereas cidr 阅读全文
  posted @ 2024-12-04 09:20 ZhangZhihuiAAA 阅读(3) 评论(0) 推荐(0) 编辑
• PostgreSQL - Study Notes 1
  摘要：Fraction is precise, but slow. Floating point is fast, but imprecise. Two floating point: types real (float4) and double precision (float8). Domain is 阅读全文
  posted @ 2024-12-02 18:24 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0) 编辑