large-data

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Clustering of 10's of millions of high dimensional data

I have a set of 50 million text snippet开发者_高级运维s and I would like to create some clusters out of them. The dimensionality might be somewhere between 60k-100k. The average text snippet length wo[详细]

2023-04-05 03:26 分类：问答
150M records order by name

I have a dataset of around 开发者_开发知识库150 million records that\'s generated daily it contains:[详细]

2023-04-05 01:13 分类：问答
RDBMS for extremely large data sets - what are people using?

I have to perform some serious data mining on very large data sets stored in MySQL db. However, queries that require a bit more than a basic SELECT * FROM X WH开发者_C百科ERE ... tend to become rather[详细]

2023-04-02 05:42 分类：问答
java: very large trees?

The objective is to build very large trees. By very large I mean hun开发者_StackOverflow中文版dreds of millions of nodes, fitting in a few gigabytes.[详细]

2023-04-01 23:33 分类：问答
INSERT IGNORE or INSERT WHERE NOT IN

I have a 9 million rows table and I\'m struggling to handle all this data because of its sheer size. What I want to do is add IMPORT a CSV to the table without overwriting data.[详细]

2023-04-01 10:56 分类：问答
Hibernate Stored Procedure invocation leads to OutOfMemory

I am using Hibernate\'s nam开发者_如何学Pythoned Query to execute a stored procedure returning a very large dataset ( over 2 million rows ) The DB is Oracle 11g[详细]

2023-03-28 12:08 分类：问答
Python: memory efficient list with list.sort(cmp=myfnc)

What is the best way to improve this code: def my_func(开发者_如何学Pythonx, y): ... do smth ... return cmp(x\',y\')[详细]

2023-03-26 13:04 分类：问答
High-performance multi-tier tag filtering

I have a large database of artists, albums, and tracks. Each of these items may have one or more tags assigned via glue tables (track_attributes, album_attributes, artist_attributes). There are severa[详细]

2023-03-26 00:14 分类：问答
Database design - large fields

Let\'s say, for example, that I have a list of articles in a blog. Each article has one image, each image has one thumbnail.[详细]

2023-03-25 09:26 分类：问答
Is there any way to load result query in memory?

I have a huge database (2.1 billions row) and I need to perform some calculation to extract some statistical results. To my understanding, it\'s obvious that it is not wise to perform the calculation[详细]

2023-03-24 07:17 分类：问答