Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bidirectional Text Compression in External Memory   Bidirectional compression algorithms work by substituting repeated substrings
by references that, unlike in the famous LZ77-scheme, can point to either
direction. We present such an algorithm that is particularly suited for an
external memory implementation. We evaluate it experimentally on large data
sets of size up to 128 GiB (using only 16 GiB of RAM) and show that it is
significantly faster than all known LZ77 compressors, while producing a roughly
similar number of factors. We also introduce an external memory decompressor
for texts compressed with any uni- or bidirectional compression scheme.

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The categories of this paper are: quant-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
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The categories of this paper are: hep-th