Kerko
Kerko is a web application component implemented in Python for the Flask framework that provides a user-friendly search and browsing interface for sharing a bibliography managed with the Zotero reference manager.
The combination of Kerko and Zotero gives you the best of both worlds: a rich but easy to use web interface for end-users of the bibliography, and a well-established and powerful bibliographic reference management tool for individuals or teams working on the bibliography's content.
How it works
A Kerko-powered bibliography is managed using Zotero, and stored in the cloud on zotero.org, while Kerko itself is incorporated into an application which is installed on a web server. The bibliographic references may reside in a Zotero group library, where multiple users may collaborate to manage the content, or in a Zotero private library. On the web server, Kerko maintains a search index, which is a copy of the Zotero library that is optimized for search. When users interact with the web application, Kerko gets all the required data from that search index, without ever contacting zotero.org. It is through a scheduled task, which runs at regular intervals, that Kerko automatically brings its search index up to date by using the Zotero Web API to retrieve the latest data from zotero.org.
As a Flask blueprint (a "blueprint" is Flask's term for an application component, similar to what some other systems might call a plugin or an extension), Kerko only works when incorporated into a Flask application. However, a sample stand-alone application is available, KerkoApp, which is pre-built with Kerko and ready to be deployed on a web server. KerkoApp might work for you if you like the default appearance and if the provided configuration options are sufficient for your needs, otherwise you should probably consider building a custom application. In a custom application, the Kerko-powered bibliography might be just one section of a larger website.
Demo site
A KerkoApp-based demo site is available for you to try. You may also view the Zotero library that contains the source data for the demo site.
Features
The following features are implemented in Kerko:
- Faceted search interface: allows exploration of the bibliography both in search mode and in browsing mode, potentially suiting different user needs, behaviors and abilities. For example, users with a prior idea of the topic or expected results are able to enter keywords or a more complex query in a search field, while those who wish to become familiar with the content of the bibliography or discover new topics may choose to navigate along the proposed facets, to narrow or broaden their search. Since both modes are integrated into a single interface, it is possible to combine them.
- Keyword search features:
- Boolean operators:
AND
: matches items that contain all specified terms. This is the default relation between terms when no operator is specified, e.g.,a b
is the same asa AND b
.OR
: matches items that contain any of the specified terms, e.g.,a OR b
.NOT
: excludes items that match the term, e.g.,NOT a
.- Boolean operators must be specified in uppercase and may be translated in other languages.
- Logical grouping (with parentheses), e.g.,
(a OR b) AND c
. - Sequence of words (with double quotes), e.g.,
"a b c"
. The default difference between word positions is 1, meaning that an item will match if it contains the words next to each other, but a different maximum distance may be selected (with the tilde character), e.g."web search"~2
allows up to 1 word betweenweb
andsearch
, meaning it could matchweb site search
as well asweb search
. - Term boosting (with the caret), e.g.,
faceted^2 search browsing^0.5
specifies thatfaceted
is twice as important assearch
when computing the relevance score of results, whilebrowsing
is half as important. Boosting may be applied to a logical grouping, e.g.,(a b)^3 c
. - Keyword search is case-insensitive, accents are folded, and punctuation is
ignored. To further improve recall (albeit at the cost of precision),
stemming is also performed on terms from most text fields, e.g., title,
abstract, notes. Stemming relieves the user from having to specify all
variants of a word when searching, e.g., terms such as
search
,searches
, andsearching
all return the same results. The Snowball algorithm is used for that purpose. - Full-text search: the text content of PDF attachments can be searched.
- Scope of search: users may choose to search everywhere, in author/contributor names, in titles, in all fields (i.e., in metadata and notes), or in documents (i.e., in the text content of attachments). Applications may provide additional choices.
- Boolean operators:
- Faceted browsing: allows filtering by topic (Zotero tag), by resource type (Zotero item type), by publication year. Moreover, an application may define facets modeled on collections and subcollections; in such case, any collection can be represented as a facet, and each subcollection as a value within that facet. By taking advantage of Zotero's ability to assign any given item to multiple collections, a faceted classification scheme can be modeled (including hierarchies within facets).
- Relevance scoring: provided by the Whoosh library and based on the BM25F algorithm, which determines how important a term is to a document in the context of the whole collection of documents, while taking into account its relation to document structure (in this regard most fields are neutral, but the score is boosted when a term appears in specific fields, e.g., DOI, ISBN, ISSN, title, author/contributor). Any keyword search asks the question "how well does this document match this query clause?", which requires calculating a relevance score for each document. Filtering with facets, on the other hand, has no effect on the score because it asks "does this document match this query clause?", which leads to a yes or no answer.
- Sort options: by relevance score (only applicable with keyword search), by publication date, by author, by title.
- Citation styles: any from the Zotero Style Repository, or custom stylesheet defined in the Citation Style Language (stylesheet must be accessible by URL).
- Language support: the default user interface is in English, but some translations are provided. Additional translations may be created using gettext-compatible tools; see the Translating Kerko section below. Also to consider: locales supported by the Zotero Data Schema (which provides the names of fields, item types and author types displayed by Kerko); languages supported by Whoosh (which provides the search capabilities), i.e., ar, da, nl, en, fi, fr, de, hu, it, no, pt, ro, ru, es, sv, tr.
- Responsive design: the simple default implementation works on large monitors as well as on small screens. It is based on Bootstrap.
- Customizable front-end: applications may partly or fully replace the default templates, scripts and stylesheets with their own.
- Semantic markup: users may easily import citations into their own reference manager software, either from search results pages or individual bibliographic record pages, both of which embed bibliographic metadata (using the OpenURL COinS model). Zotero Connector, for example, will automatically detect the metadata present in the page, but similar behavior applies to many other reference management software as well.
- Exporting: users may export individual citations as well as complete bibliographies corresponding to search results. By default, download links are provided for the RIS and BibTeX formats, but applications may be configured to export any format supported by the Zotero API.
- Printing: stylesheets are provided for printing individual bibliographic records as well as lists of search results. When printing search results, all results get printed (not just the current page of results).
- Notes and attachments: notes, attached files, and attached links to URIs are synchronized from zotero.org and made available to users of the bibliography. Regular expressions may be used to include or exclude such child items from the bibliography, based on their tags.
- DOI, ISBN and ISSN resolver: items that have such identifier in your library can be referenced by appending their identifier to your Kerko site's base URL.
- Relations: bibliographic record pages show links to related items, if any. You may define such relations using Zotero's Related field. Moreover, Kerko adds the Cites and Cited by relation types, which can be managed in Zotero through notes (see the Kerko Recipes section below). Custom applications can add more types of relations if desired.
- Badges: icons can be displayed next to items, based on custom conditions.
- Integration: although a standalone application is available, Kerko is designed not as a standalone application, but to be part of a larger Flask application.
Requirements
Kerko requires Python 3.7 or later.
Dependencies
The following packages will be automatically installed when installing Kerko:
- Babel: utilities for internationalization and localization.
- Bootstrap-Flask: helper for integrating Bootstrap.
- Flask: web application framework.
- Flask-Babel: helps Kerko provide its own translations, at the blueprint level.
- Flask-WTF: simple integration of Flask and WTForms.
- Jinja2: template engine.
- Pyzotero: Python client for the Zotero API.
- w3lib: URL and HTML manipulation utilities.
- Werkzeug: WSGI web application library (also required by Flask).
- Whoosh: pure Python full-text indexing and searching library.
- WTForms: web forms validation and rendering library.
The following front-end resources are loaded from CDNs by Kerko's default templates (but could be completely removed or replaced by your application):
- Bootstrap: front-end component library for web applications.
- FontAwesome: beautiful open source icons.
- jQuery: JavaScript library (required by Bootstrap).
- Popper.js: JavaScript library for handling tooltips, popovers, etc. (used by Bootstrap).
Getting started
This section only applies if you intend to integrate Kerko into your own application. If you are more interested into the standalone KerkoApp application, please refer to its installation instructions.
We'll assume that you have some familiarity with Flask and suggest steps for
building a minimal app, let's call it hello_kerko.py
, to get you started.
-
The first step is to install Kerko. As with any Python library, it is highly recommended to install Kerko within a virtual environment.
Once the virtual environment is set and active, use the following command:
pip install kerko
-
In
hello_kerko.py
, configure variables required by Kerko and create yourapp
object, as in the example below:import pathlib from flask import Flask from kerko.composer import Composer app = Flask(__name__) app.config['SECRET_KEY'] = '_5#y2L"F4Q8z\n\xec]/' # Replace this value. app.config['KERKO_ZOTERO_API_KEY'] = 'xxxxxxxxxxxxxxxxxxxxxxxx' # Replace this value. app.config['KERKO_ZOTERO_LIBRARY_ID'] = '9999999' # Replace this value. app.config['KERKO_ZOTERO_LIBRARY_TYPE'] = 'group' # Replace this value if necessary. app.config['KERKO_DATA_DIR'] = str(pathlib.Path(__file__).parent / 'data' / 'kerko') app.config['KERKO_COMPOSER'] = Composer()
SECRET_KEY
: This variable is required for generating secure tokens in web forms. It should have a secure, random value and it really has to be secret. It is usually set in an environment variable rather than in Python code, to make sure it never ends up in a code repository. But here we're taking the minimal route and thus are cutting some corners!KERKO_ZOTERO_API_KEY
,KERKO_ZOTERO_LIBRARY_ID
andKERKO_ZOTERO_LIBRARY_TYPE
: These variables are required for Kerko to be able to access your Zotero library. See the Configuration variables section for details on how to properly set these variables.KERKO_DATA_DIR
: This variable specifies the directory where to store the search index and the file attachments. If the specified directory does not already exists, Kerko will try to create it.KERKO_COMPOSER
: This variable specifies key elements needed by Kerko, e.g., fields for display and search, facets for filtering. These are defined by instantiating theComposer
class. Your application may manipulate the resulting object at configuration time to add, remove or alter fields, facets, sort options, search scopes, citation download formats, or badges. See the Kerko Recipes section for some examples.
-
Also configure the Flask-Babel and Bootstrap-Flask extensions:
from flask_babel import Babel from flask_bootstrap import Bootstrap babel = Babel(app) bootstrap = Bootstrap(app)
See the respective docs of Flask-Babel and Bootstrap-Flask for more details.
-
Instantiate the Kerko blueprint and register it in your app:
from kerko import blueprint as kerko_blueprint app.register_blueprint(kerko_blueprint, url_prefix='/bibliography')
The
url_prefix
argument defines the base path for every URL provided by Kerko. -
In the same directory as
hello_kerko.py
with your virtual environment active, run the following shell commands:export FLASK_APP=hello_kerko.py flask kerko sync
Kerko will retrieve your bibliographic data from zotero.org. If you have a large bibliography or large attachments, this may take a while (and there is no progress indicator). In production use, that command is usually added to the crontab file for regular execution (with enough time between executions for each to complete before the next one starts).
To list all commands provided by Kerko:
flask kerko --help
-
Run your application:
flask run
-
Open http://127.0.0.1:5000/bibliography/ in your browser and explore the bibliography.
You have just built a really minimal application for Kerko. This code example is available at KerkoStart. See also KerkoApp for a slightly more complete example.
Configuration variables
The variables below are required and have no default values:
KERKO_COMPOSER
: An instance of thekerko.composer.Composer
class.KERKO_DATA_DIR
: The directory where to store the search index and the file attachments. Subdirectoriesindex
andattachments
will be created if they do not already exist.KERKO_ZOTERO_API_KEY
: Your API key, as created on zotero.org.KERKO_ZOTERO_LIBRARY_ID
: The identifier of the library to get data from. For your personal library this value should be your userID, as found on https://www.zotero.org/settings/keys (you must be logged-in). For a group library this value should be the groupID of the library, as found in the URL of that library (e.g., in https://www.zotero.org/groups/2348869/kerko_demo, the groupID is2348869
).KERKO_ZOTERO_LIBRARY_TYPE
: The type of library to get data from, either'user'
for your personal library, or'group'
for a group library.
Any of the following variables may be added to your configuration if you wish to override their default value:
KERKO_CSL_STYLE
: The citation style to use for formatted references. Can be either the file name (without the.csl
extension) of one of the styles in the Zotero Styles Repository (e.g.,apa
) or the URL of a remote CSL file. Defaults to'apa'
.KERKO_DOWNLOAD_ATTACHMENT_NEW_WINDOW
: Open attachments in new windows, i.e., add thetarget="_blank"
attribute to attachment links. Defaults toFalse
.KERKO_DOWNLOAD_CITATIONS_LINK
: Provide a citation download button on search results pages. Defaults toTrue
.KERKO_DOWNLOAD_CITATIONS_MAX_COUNT
: Limit over which the citation download button should be hidden from search results pages. Defaults to0
(i.e. no limit).KERKO_FACET_COLLAPSING
: Allow collapsible facets. Defaults toFalse
.KERKO_FULLTEXT_SEARCH
: Allow full-text search of PDF attachments. Defaults toTrue
. To get consistent results, see Ensuring full-text indexing of your attachments in Zotero below. Caution: If you have thousands of attachments, this feature can significantly slow down the process of synchronizing data from zotero.org, due to Kerko performing a large number of Zotero API requests (hopefully we'll fix this in the future).KERKO_PAGE_LEN
: The number of search results per page. Defaults to20
.KERKO_PAGER_LINKS
: Number of pages to show in the pager (not counting the current page). Defaults to4
.KERKO_PRINT_ITEM_LINK
: Provide a print button on item pages. Defaults toFalse
.KERKO_PRINT_CITATIONS_LINK
: Provide a print button on search results pages. Defaults toFalse
.KERKO_PRINT_CITATIONS_MAX_COUNT
: Limit over which the print button should be hidden from search results pages. Defaults to0
(i.e. no limit).KERKO_RELATIONS_INITIAL_LIMIT
: Number of related items to show above the "view all" link. Defaults to5
.KERKO_RELATIONS_LINKS
: Show item links in lists of related items. Defaults toFalse
. Enabling this only has an effect if at least one of the following variables is also set toTrue
:KERKO_RESULTS_ATTACHMENT_LINKS
,KERKO_RESULTS_URL_LINKS
).KERKO_RESULTS_ABSTRACTS
: Show abstracts on search result pages. Defaults toFalse
(abstracts are hidden).KERKO_RESULTS_ABSTRACTS_TOGGLER
: Show a button letting users show or hide abstracts on search results pages. Defaults toTrue
(toggle is displayed).KERKO_RESULTS_ABSTRACTS_MAX_LENGTH
: Truncate abstracts at the given length (in number of characters). If text is to be truncated in the middle of a word, the whole word is discarded instead. Truncated text is appended with an ellipsis sign ("..."). Defaults to0
(abstracts get displayed in their full length, without any truncation).KERKO_RESULTS_ABSTRACTS_MAX_LENGTH_LEEWAY
: If the length of an abstract only exceedsKERKO_RESULTS_ABSTRACTS_MAX_LENGTH
by this tolerance margin (in number of characters), it will not be truncated. Defaults to0
(no tolerance margin).KERKO_RESULTS_ATTACHMENT_LINKS
: Provide links to attachments in search results. Defaults toTrue
.KERKO_RESULTS_URL_LINKS
: Provide links to online resources in search results (for items whose URL field has a value). Defaults toTrue
.KERKO_RESULTS_FIELDS
: List of item fields to retrieve for search results (most notably used by theKERKO_TEMPLATE_SEARCH_ITEM
template). Values in this list are keys identifying fields defined in thekerko.composer.Composer
instance. One probably only needs to change the default list when overriding the template to display additional fields. Note that some fields from the default list may be required by other Kerko functions.KERKO_TEMPLATE_SEARCH
: Name of the Jinja2 template to render for the search page with list of results. Defaults tokerko/search.html.jinja2
.KERKO_TEMPLATE_SEARCH_ITEM
: Name of the Jinja2 template to render for the search page with a single bibliographic record. Defaults tokerko/search-item.html.jinja2
.KERKO_TEMPLATE_ITEM
: Name of the Jinja2 template to render for the bibliographic record view. Defaults tokerko/item.html.jinja2
.KERKO_TEMPLATE_LAYOUT
: Name of the Jinja2 template that is extended by the search, search-item, and item templates. Defaults tokerko/layout.html.jinja2
.KERKO_TEMPLATE_BASE
: Name of the Jinja2 template that is extended by the layout template. Defaults tokerko/base.html.jinja2
.KERKO_TITLE
: The title to display in web pages. Defaults to'Kerko'
.KERKO_ZOTERO_BATCH_SIZE
: Number of items to request on each call to the Zotero API. Defaults to100
(which is the maximum currently allowed by the API).KERKO_ZOTERO_MAX_ATTEMPTS
: Maximum number of tries after the Zotero API has returned an error or not responded during indexing. Defaults to10
.KERKO_ZOTERO_WAIT
: Time to wait (in seconds) between failed attempts to call the Zotero API. Defaults to120
.- Localization-related variables:
BABEL_DEFAULT_LOCALE
: The default language of the user interface. Defaults to'en'
. Your application may set this variable and/or implement a locale selector function to override it (see the Flask-Babel documentation).BABEL_DEFAULT_TIMEZONE
: The timezone to use for user facing dates. Defaults to'UTC'
. Your application may set this variable and/or implement a timezone selector function to override it (see the Flask-Babel documentation).KERKO_USE_TRANSLATIONS
: Use translations provided by the Kerko package. Defaults toTrue
. When this is set toFalse
, translations may be provided by the application's own translation catalog.KERKO_WHOOSH_LANGUAGE
: The language of search requests. Defaults to'en'
. You may refer to Whoosh's source to get the list of supported languages (whoosh.lang.languages
) and the list of languages that support stemming (whoosh.lang.has_stemmer()
).KERKO_ZOTERO_LOCALE
: The locale to use with Zotero API calls. This dictates the locale of Zotero item types, field names, creator types and citations. Defaults to'en-US'
. Supported locales are listed at https://api.zotero.org/schema, under "locales".
- Development/test-related variables:
KERKO_ZOTERO_START
: Skip items, start at the specified position. Defaults to0
. Useful only for development/tests.KERKO_ZOTERO_END
: Load items from Zotero until the specified position. Defaults to0
(no limit). Useful only for development/tests.
Known limitations
- The system can probably handle relatively large bibliographies (it has been tested so far with ~15k entries), but the number of distinct facet values has more impact on response times. For the best response times, it is recommended to limit the number of distinct facet values to a few hundreds.
- Kerko can only manage a single bibliography per application.
- Although Kerko can be integrated in a multilingual web application were the visitor may select a language, Zotero does not provide a way to manage tags or collections in multiple languages. Thus, there is no easy way for Kerko to provide those names in the user's language.
- Whoosh does not provide much out-of-the-box support for non-Western languages. Therefore, search might not work very well with such languages.
- Zotero is the sole reference management tool supported as a back-end to Kerko.
Design choices
- Do not build a back-end. Let Zotero act as the "content management" system.
- Allow Kerko to integrate into richer web applications.
- Only implement in Kerko features that are related to the exploration of a bibliography. Let other parts of the web application handle all other features that might be needed.
- Use a lightweight framework (Flask) to avoid carrying many features that are not needed.
- Use pure Python dependencies to keep installation and deployment simple. Hence the use of Whoosh for search, for example, instead of Elasticsearch or Solr.
- Use a classic fullstack architecture. Keep it simple and avoid asset management. Some will want to replace the templates and stylesheets anyway.
Kerko Recipes
TODO: More recipes!
Ensuring full-text indexing of your attachments in Zotero
Kerko's full-text indexing relies on text content extracted from attachments by Zotero. Consequently, for Kerko's full-text search to work, you must make sure that full-text indexing works in Zotero first; see Zotero's documentation on full-text indexing.
Individual attachments in Zotero can be indexed, partially indexed, or unindexed. Various conditions may cause an attachment to be partially indexed or unindexed, e.g., file is large, has not been processed yet, or does not contain text.
Zotero shows the indexing status in the attachment's right pane. If it shows "Indexed: Yes", all is good. If it shows "Indexed: No" or "Indexed: Partial", then clicking the "Reindex Item" button (next to the indexing status) should ensure that the attachment gets fully indexed, that is if the file actually contains text. If there is no "Reindex Item" button, it probably means that Zotero does not support that file type for full-text indexing (at the moment, it only supports PDF and plain text files).
It can be tedious to go through hundreds of attachments just to find out whether they are indexed or not. To make things easier, you could create a saved search in your Zotero library to get an always up-to-date list of unindexed PDFs. Use the following search conditions:
- Match all of the following:
- Attachment File Type — is — PDF
- Attachment Content — does not contain — . (that's a period; also select RegExp in the small dropdown list, as that will make the period match any character)
Controlling the indexing status will not only improve full-text search on your Kerko site, but also full-text search from within Zotero!
Providing Cites and Cited by relations
Zotero allows one to link items together through its Related field. However, such relations are not typed nor directed, making it impossible (1) to tell whether the relation has anything to do with citations, or (2) to distinguish which of two related items is the citing entity, and which is the one being cited. Consequently, Kerko has its own method for setting up those relations.
To establish Cites relations in your Zotero library, you must follow the procedure below:
- Install the Zutilo plugin for Zotero. Once it is installed, go to Tools > Zutilo Preferences... in Zotero. Then, under Zotero item menu, select Zotero context menu next to the Copy Zotero URIs menu item. This configuration step only needs to be done once.
- Select one or more items from your library that you wish to show as cited by another. Right-click on one of the selected items to open the context menu, and select Copy Zotero URIs from that menu. This copies the references of the selected items items to the clipboard.
- Right-click the item from your library that cites the items. Select Add Note from that item's context menu to add a child note.
- In the note editor, paste the content of the clipboard. The note should then
contain a series of URIs looking like
https://www.zotero.org/groups/9999999/items/ABCDEFGH
orhttps://www.zotero.org/users/9999999/items/ABCDEFGH
. - At the bottom of the note editor, click into the Tags field and type
_cites
. That tag that will tell Kerko that this particular note is special, that it contains relations.
At the next synchronization, Kerko will retrieve the references found in notes
tagged with _cites
. Afterwards, proper hyperlinked citations will appear in
the Cites and Cited by sections of the related bibliographic records.
Remarks:
- Enter only the Cites relations. The reverse Cited by relations will be inferred automatically.
- You may only relate items that belong to the same Zotero library.
- You may use Zotero Item Selects (URIs starting with
zotero://select/
) in the notes, if you prefer those to Zotero URIs. - If entered as plain text, URIs must be separated by one or more whitespace
character(s). Alternatively, URIs may be entered in HTML links, i.e., in the
href
attribute of<a>
elements. - Hopefully, Zotero will provide nicer ways for handling relation types in the future. In the meantime, using child notes is how Kerko handles it. If relation types are important to you, consider describing your use case in the Zotero forums.
- Custom Kerko applications can provide more types of relations, if desired, in addition to Cites and Cited by.
Translating Kerko
Kerko can be translated using Babel's setuptools integration.
The following commands should be executed from the directory that contains
setup.py
, and the appropriate virtual environment must have been
activated beforehand.
Create or update the PO template (POT) file:
python setup.py extract_messages
Create a new PO file (for a new locale) based on the POT file. Replace
YOUR_LOCALE
with the appropriate language code, e.g., de
, es
, fr
:
python setup.py init_catalog --locale YOUR_LOCALE
Update an existing PO file based on the POT file:
python setup.py update_catalog --locale YOUR_LOCALE
Compile MO files:
python setup.py compile_catalog
You are welcome to contribute your translation. See the Submitting a translation section.
Contributing
Reporting issues
Issues may be submitted on Kerko's issue tracker. Please consider the following guidelines:
- Make sure that the same issue has not already been reported or fixed in the repository.
- Describe what you expected to happen.
- If possible, include a minimal reproducible example to help others identify the issue.
- Describe what actually happened. Include the full traceback if there was an exception.
Submitting code changes
Pull requests may be submitted against Kerko's repository. Please consider the following guidelines:
- Before submitting, run the tests and make sure they pass. Add tests relevant to your change (those should fail if ran without your patch).
- Use Yapf to autoformat your code (with
option
--style='{based_on_style: facebook, column_limit: 100}'
). Many editors provide Yapf integration. - Include a string like "Fixes #123" in your commit message (where 123 is the issue you fixed). See Closing issues using keywords.
- If a Jinja2 template represents a page fragment or a collection of macros, prefix its file name with the underscore character.
Running the tests
Before running the tests, make sure you have an actual installation of Kerko
that includes your changes as well as the dependencies required for testing,
e.g., from Kerko's root directory, where setup.cfg
resides:
pip install -e .[tests]
To run basic tests in your current environment:
python -m unittest
To run the full test suite under different environments (using the various Python interpreters available on your machine):
tox
Note: Test coverage is very low at the moment. You are welcome to contribute new tests!
Submitting a translation
Some guidelines:
- The PO file encoding must be UTF-8.
- The header of the PO file must be filled out appropriately.
- All messages of the PO file must be translated.
Please submit your translation as a pull request against Kerko's repository, or by e-mail, with the PO file included as an attachment (do not copy the PO file's content into an e-mail's body, since that could introduce formatting or encoding issues).
Supporting the project
Nurturing an open source project such as Kerko, following up on issues and helping others in working with the system is a lot of work, but hiring the original developers of Kerko can do a lot in ensuring continued support and development of the project.
If you need professional support related to Kerko, have requirements not currently implemented in Kerko, want to make sure that some Kerko issue important to you gets resolved, or if you just like our work and would like to hire us for an unrelated project, please e-mail us.
Changelog
For a summary of changes by release version, see the changelog.
Project background
Kerko was inspired by two prior projects:
- Bibliographie sur l’histoire de Montréal, developed in 2014 by David Lesieur and Patrick Fournier, of Whisky Echo Bravo, for the Laboratoire d'histoire et de patrimoine de Montréal (Université du Québec à Montréal, Canada).
- Bibliography on English-speaking Quebec, developed in 2017 by David Lesieur, for the Quebec English-Speaking Communities Research Network (QUESCREN) (Concordia University, Canada).
Later on, it became clear that other organizations needed a similar solution. However, software from the prior projects had to be rewritten so it could more easily be configured for different bibliographies from organizations with different needs. That led to Kerko, whose development was made possible through the following project:
- Bibliographie francophone sur l'archivistique, funded by the Association internationale des archives francophones (AIAF) and hosted by the École de bibliothéconomie et des sciences de l’information (EBSI) (Université de Montréal, Canada).
Etymology
The name Zotero reportedly derives from the Albanian word zotëroj, which means "to learn something extremely well, that is to master or acquire a skill in learning" (Source: Mark Dingemanse, 2008, Etymology of Zotero).
The name Kerko is a nod to Zotero as it takes a similar etymological route: it derives from the Albanian word kërkoj, which means "to ask, to request, to seek, to look for, to demand, to search" and seems fit to describe a search tool.
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- The EdTech Hub Evidence Library
- University of Saint Joseph Research Output
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