NEWS

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fozziejoin 0.0.14

• Jaccard distance join performance improved by sorting qgrams into HashMaps keyed by total number of qgrams. This allows us to safely ignore any cases where Jaccard distance would be over threshold based solely on the size of the q-grams on left and right sides. Special handling for max_distance=1.0 required.
• Unit tests added to confirm Jaccard distance works properly at max_distance=1.0.
• README updates to reflect the availability of fozziejoin on CRAN.
• Corrected typo in benchmarking vignette.
• Unit tests now assume tz=UTC for all checks to fix CI/CD errors.
• Revised unit tests meant to confirm the nthread argument. Tests were modified to include a 0.03 second tolerance. This is designed to prevent false positives that occur intermittently in some builds.
• Migrated repository layout: we removed the monorepo structure used for other fozziejoin projects (e.g., the Python package). This is an internal reorganization and should not affect downstream users.

fozziejoin 0.0.13 (2026-03-09)

• The functions fozzie_difference_join_rs, fozzie_distance_join_rs, fozzie_interval_join_rs, fozzie_regex_join_rs, and fozzie_string_join_rs functions are no longer exported and their .Rd documentation files have been removed.
• Description file updated to add references for 'fuzzyjoin' as well as the Rust crates 'textdistance', 'rapidfuzz', and 'interavl'

fozziejoin 0.0.12

• Enhanced the testing suite for multithreading validation. The testing suite is configured to use, at most, 2 threads. To ensure this is honored, we check that the user space time is less than or equal to 2.5 times the wall clock time. However, when datasets become very small, these tests can fail sporadically. Tests have been updated to use larger datasets for better reliability.
• Updated the DESCRIPTION file to remove direct references to tibbles in the Description field to be more generic and formal.

fozziejoin 0.0.11

• Converted relative hyperlinks in the README file to absolute hyperlinks
• Fixed remaining references to the old, archived GitHub repo
• Added inst/AUTHORS file to list the authors of dependency Rust crates in addition to the LICENSE.note
• Now that we have started the CRAN submission cycle, precompiled binaries for Windows will no longer be created. Relevant sections of the README have been updated.

fozziejoin 0.0.10

• Two vignettes added:
  • General package overview
  • Benchmarking sample and considerations
• Interval join with interval_mode = 'real' now handles a mix of integer and double inputs correctly.
• If by = NULL, the internal common_by function will now print the columns used in the join.
• License information updated to reflect author(s) of all imported Rust crates. This seems necessary based on a review of other similar extendr packages.
• Reproducible benchmark scripts created using github workflows
• Users can now set a global thread count via options(fozzie.nthread = 4), which will be respected by all functions with an nthread argument. By default, the package uses the default from the multithreading Rust library rayon.
• Initial CRAN submission

fozziejoin 0.0.9

• Distance joins now available.
• Semi join type added.
• If one of the input dataframes is a tibble, the output result will now be a tibble.
  • This is necessary to handle some of the functionalities present in tibble but not in data.frame.
  • tibble is now a suggested import.
• Interval joins added, with three "interval_mode"'s:
  • integer: integer-based join types, with behavior designed to emulate IRanges findOverlaps. Importantly, [1, 2] and [3, 4] would be considered overlapping in this case.
  • real: real number joins, where there must be some continuous overlap between ranges to be considered matching.
  • auto: behavior determined by the input column types.
• The by function should now better resemble the fuzzyjoin implementation. Notes have been added to the internal function signature to acknowledge their contribution.
• Performance improvements.
  • Rust code now uses FxHashMap and FxHashSet universally.
  • Simplified memory structures for case when only one column is joined on.
• Better code organization in Rust code.
• Better error handling.
  • Most areas of the code now gracefully return an error to R instead of panicking.
  • The areas where panics still might happen aren't known to throw errors, but I'd still like to properly handle them in the future.
• Now using styler to be more style guide compliant.

fozziejoin 0.0.8

• Arbitrary vector attributes, such as factor levels and POSIX dates, should now be supported. See: Issue #6. Testing utilities updated to validate this change.
• Fixed a bug in the nthread argument wherein the user-specified thread count was ignored and the default global thread pool settings were always used. See Issue #7.
• Contributor code of conduct added
• string distance functions added to their own submodule within the Rust code. This is to better organize the code as we plan to add other fuzzy join types (distance, difference, geo, etc.)
• fozzie_join functions have been renamed to fozzie_string_join. This will better describe the function behavior and allow us to add other join types in the future. See Issue #9
• fozzie_string_full_join now implements full joins as the union of the left and right fuzzy join. Before this, it was the cartesian product of left and right datasets.
• fozzie_difference_join suite of functions now available. This allows joining on numeric distance.

fozziejoin 0.0.7

• Switched to rapidfuzz crate for supported algorithms, as they perform better than prior implementations.
• README updates
• .gitignore updated to remove vendored packages, as is convention.

fozziejoin 0.0.6

• Fixed issue with Jaccard and qgram distance (see issue #3).
• Comparative benchmark vs. fozziejoin updated to check for identical output (after some light conversions for consistency in column naming/output object classes).

fozziejoin 0.0.5

Functionality and performance updates

• Joins now properly handle dates and factors
• Added convenience function for all directional variants of joins (fozzie_left_join(), fozzie_inner_join(), ...).
• Reverted a change from v0.0.4 wherein speed distance calculation methods differ by operating system (Windows vs. everything else). The supposed speed gains were actually flaws in the evaluation. Reverted back to a single method for all OS's.
• Speedup in OSA algorithm due to more efficient memory handling.

Documentation

• README updates:
  • Installation steps reflect current procedures and reference the GitHub release for v0.0.5.
  • Requirements updated as there is now an install from binary option for Windows which has fewer system requirements.
  • Removed Todo section. Will use GitHub issues for this sort of thing moving forward.
  • Documentation had error in example usage code. fuzzyjoin was a required import for the misspellings dataset.
• Documentation updated to pass all devtools::check() and R CMD check checks for the first time.
• There are a few examples where code is only lightly adapted from the textdistance crate implementation. Those scripts now have a header comment acknowledging the original author.

Preparation for CRAN release

• This version is the last before attempting CRAN distribution. A GitHub "release" has been created with the package build for all operating systems. CRAN acceptance may require multiple versions.
• All tests now force nthread=2 for compliance with CRAN policies.

fozziejoin 0.0.4

• Performance improvements:
  • Windows build now uses a parallelization method more appropriate for the OS (rayon's par_chunks have replaced equivalent par_iter operations)
  • Q-gram based edit distances have been sped up by reducing memory copies.
• Scripts for benchmarking have been added.
• Project README updated to include some benchmarking results.

fozziejoin 0.0.3

• Anti join implemented
• Full join implemented
• Multikey joins now allowed (e.g. joining on "Name" and "DOB").
• LCS string distance now available. This matches the original R stringdist behavior.
• Can control number of threads using the nthread parameter.
• Jaro-Winkler parameters prefix_weight and max_prefix parameters added. These are similar to the bt and p parameters in the stringdist package, with some differences (prefix_weight is a set number of characters, not a proportion).
• The jaro method is no longer supported. The default values for the jw and jaro_winkler methods simplify into the Jaro case.
• Removed case insensitive matching as an immediate project goal.

fozziejoin 0.0.2

• Right-hand join functionality implemented.
• The parameter distance_col is live. It can be used to add the string distance of joined fields to the output.
• Fixed an issue where left and right joins would replace NA in R character fields with a string with the string value "NA". Tests updated to expect a true NA.
• Added explicit checks for NA strings in all Rust internals that perform fuzzy matches. If one or more values in a pair is NA, the pair is considered a non-match.
• Updated README.

fozziejoin 0.0.1

• NEWS.md added
• Inner join implemented for all string distance algorithms except LCS
• Most string distance algorithms have been implemented for inner and left joins. Results were verified against expectations and with the fuzzyjoin package. Exceptions:
  • jarowinkler/jw method requires the addition of new parameters for p and dt to be fully customizable. Currently, jaro_winkler defaults to a scaling factor of 0.1 and a maximum prefix of 4. This is consistent with the default of the stringdist method.
  • jaro algorithm does not actually exist in the stringdist implementation, as it is equivalent to setting p=0.
  • LSA algorithm is not implemented yet. There is an implementation in the Rust code, but it is not correct and the R user has no way of calling that method.
• Project DESCRIPTION file updated
• fuzzy_join API call now includes the how method to specify the join type. inner and left are the currently supported methods. At least right, full, and anti are planned for future releases.