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Questions tagged [compression]

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68 questions
Newest Active Bountied Unanswered
5 votes
5 answers
772 views

I often see the claim that various data warehouse/analytical database systems derive significant performance benefits from compressing their data stores. On the face of it, though, this seems to be ...
Mason Wheeler's user avatar
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4 votes
2 answers
764 views

We store zipped files in the storage of a cloud provider which contain certain fields (metadata). These files are derived from other, larger files. Every time we (re)generate these files, their 'last ...
MPIchael's user avatar
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0 votes
5 answers
296 views

We have a huge amount of queries hitting our API that request a minor or major extract of some huge files lying around on our mounted hard drives. The data needs to be extracted from the files and ...
glades's user avatar
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30 votes
7 answers
17k views

If all data is essentially just a bit string, then all data can be represented as a number. Because a compression algorithm, c(x), must reduce or keep the same length of the input, then the compressed ...
Mercury's user avatar
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1 vote
1 answer
2k views

I have a jar file, for example foo.jar. My code contains a lot of libraries (almost 75 jar dependencies). I am not using anything like maven or gradle, I'm just using pure java with pure jar files as ...
Day Trip's user avatar
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2 votes
1 answer
1k views

I'm trying to make a program that produces pdf files. I've been studying the pdf format specification and specific pdf files whose format I'm trying to mimic. I found the line /FlateDecode in these ...
Zoltán Király's user avatar
  • 567
0 votes
1 answer
388 views

I am writing a c# program where I need to print a lot of small barcodes in a 100x100 grid on a piece of paper. I then scan/photograph the paper and read the barcodes again. Each barcode only need to ...
DrDress's user avatar
  • 127
4 votes
3 answers
283 views

Regarding cryptography and the issue of collisions, I posed a question as to whether it was ever possible to store every single possible combination of a bit array of a particular size, in a bit array ...
Anon's user avatar
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7 votes
2 answers
645 views

What is difference between Average length of codes and Average length of codewords in Huffman Algorithm? is both the same meaning? I get stuck in some facts: I see a fact that marked as False: for a ...
Emma Nic.'s user avatar
  • 183
0 votes
1 answer
92 views

I have a multiple files (one per CountryCode) which all get ~5000 entries added to it per day. Each entry in the file looks like (256chars max): {countryCode_customerId:{"ownerId": "...
sync101's user avatar
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7 votes
2 answers
892 views

Software libraries targetting resource constrained environments like embedded systems use conditional compilation to allow consumers to shave space by removing unused features from the final binaries ...
TZubiri's user avatar
  • 443
-2 votes
2 answers
592 views

I have 3 number arrays that I need to encode into a URL through query parameters. Example: http://localhost:3000/?r=133223333302302040&y=10000000000000000000&b=13333332002100122331 This is a ...
Simon's user avatar
  • 127
2 votes
2 answers
571 views

Today I went across a weird case for which I have no explanation, so here I am. I have two files with identical content, but one is encoded in UTF-8 and the other one is in IBM EBCDIC. Both of them ...
rodripf's user avatar
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11 votes
4 answers
2k views

From my experience, sql code changes almost always tend to be NOT incremental: someone creates a new stored procedure, or modifies an entire embedded sql query for optimization purposes, or creates a ...
CEGRD's user avatar
  • 235
0 votes
2 answers
139 views

I have thinking about this idea for over 5 years and i don't have the complete technical knowledge to fully grasp the idea I'm having. The premise of the idea is to have an extremely high base number ...
Necro's user avatar
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