We are planning to build a data exploration system for a large set of events (in the order of millions).
I\'m just wondering if anyone out there knows of a java implementation of singular value decomposition (SVD) for large sparse matrices? I need this implementation for latent semantic analysis (LSA).
For my day job, I have been tasked with setting up a computer system to run calculations on a large database of strings. I have establish a proof of concept, but don\'t have the low-level knowledge to
I develop a software which have to crypt data before to send it to another instance of the same soft (which have to decrypt it of course). I first use op开发者_运维知识库enssl_public_encrypt / openssl
I\'m fairly new to WCF and I\'m trying to figure out how streaming works.I basically have a web service that is supposed to return some information from a db.The data returned is potentially very larg
I\'m working on a web application wh开发者_C百科ere the user provides parameters, and these are used to produce a list of the top 1000 items from a database of up to 20 million rows.I need all top 100
I am trying to bind combobox with custom object list. My object list have around 15K record and combobox takes long time to show the data after clicking on combobox.
My goal is actually to dump all the data of a database to an XML file. The database is not terribly big, it\'s about 300MB. The pr开发者_StackOverflow中文版oblem is that I have a memory limitation of
given large datasets that don\'t fit in memory, is there any library or api to perform sort in Java? the implementation would possibly be simila开发者_如何学编程r to linux utility sort.Java provides a
There is a large matrix that is used in Ax=b type problem.A is symmetric. Is there any algorithm to let us save only half of the matrix a开发者_开发知识库nd do operation like x=A\\b on it?You\'ll only
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