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       Artha - An cross-platform thesaurus based on WordNet


       Artha  is an open thesaurus based on the WordNet database, created with
       simplicity in mind. Once executed, Artha monitors  for  a  user  preset
       global  hotkey  combination.  When  the  user  selects some text in any
       window, and presses this hotkey combo, Artha looks up WordNet thesaurus
       for the selected text and pops-up with the results.

       When  executed  for  the  first  time  Artha tries to register a hotkey
       automatically, in the order, Ctrl + Alt + [W or A or T or Q].  You  can
       view/change  it  via the ’Hotkey’ button in the toolbar. It can also be


       Definitions are categorized based on the PoS (Part of  Speech  -  Noun,
       Verb,  Adjective and Adverb). Apart from showing the definitions/senses
       of a searched string with usage examples, Artha  also  shows  a  word’s
       relatives  like  Synonyms,  Antonyms,  Derivatives, Pertainyms (Related
       noun/verb), Attributes, Similar  Terms,  Domain/Domain  Terms,  Causes,
       Entails,  Hypernyms  (is  a  kind of), Hyponyms (Kinds), Holonyms (is a
       part of), Meronyms (Parts).

       A word can have more then one sense i.e. it  can  convey  more  than  a
       single meaning/definition. Relative words are words that are related to
       one or more senses  of  the  searched  word,  by  a  relationship  like
       Synonym, Derivative, etc. To know which all sense a relative is related
       to, just select the  it,  the  corresponding  senses  it  maps  to  are
       highlighted.  As  per WordNet, depending on the number of senses a word
       has (polysemy count), it’s familiarity is determined. It gets displayed
       next  to  the  PoS in the definition area. There are 7 types: extremely
       rare, very rare, rare, uncommon, common, familiar,  very  familiar  and
       extremely familiar.


       Artha has 2 modes. Simple and Detailed. Artha enters Detailed mode when
       the ’Detailed’ button in the toolbar is pressed. When toggled again, it
       returns  back  to simple mode. For relatives like Antonyms, Pertainyms,
       Hypernyms, Hyponyms, Holonyms and Meronyms, where more than  one  level
       of  relatives  may be present, is showed in a tree fashion, in detailed
       mode. If in simple mode, only one level of  relatives  are  shown  even
       when  more  levels are present. E.g. ’rich’ has ’poor’ and ’lean’ alone
       as antonyms in simple mode. While  in  detailed  mode,  ’poor’  further
       infers broke, skint, etc. which are shown as children of ’poor’.


       Regular  expressions  can be used to search for a term when you vaguely
       know it and want  to  locate  it  in  the  thesaurus.  Artha’s  regular
       expression pattern closely follows Wildmat syntax by Rich Salz owing to
       its simplicity.

              *  (wildcard)  matches  any  number  of  (including  0)  unknown

              ? (joker) matches one unknown character

              [...]  (range)  matches  one  unknown character within the range

              {m, n} (limits) upper & lower limits of the number of characters
              in a range

              [^...]  (not  in  the  range)  matches one unknown character NOT
              within the range specified


              Expr. ‘cro*p‘ means the term you  want  to  corner  starts  with
              ‘cro‘  and  ends  with  ‘p‘  while  the  number of characters in
              between are unknown. It fetches crop, crop up, croup,  crock  up
              and crow step.

              Expr.  ‘*chester‘  means the searched word ends with a ‘chester‘
              while the beginning and its number characters  are  unknown.  It
              fetches  chester,  manchester,  rochester,  winchester  and  toy

              Expr. ‘can????r‘ means the term sought  starts  with  ‘can‘  and
              ends  with  ‘r‘  while  you  are  sure  that there are 5 unknown
              characters in between.  It fetches canister and cannular.

              Expr. ‘andre*[x|y|z]‘ means the word searched  for  starts  with
              andre  and  ends  with either an x or y or z, and there could be
              any number of terms in betweem these. It fetches andre  malraux,
              andrei tarkovsky, andres martinez, etc.

              Expr. ‘a[c|d|e]{2,}‘ means the word looked for starts with a and
              then there are minimum 2 or more occurances of c,  d  or  e.  It
              fetches acc, accede, ace, add, ade and aec.


       Should  the  user  prefer passive desktop notifications (balloon tips),
       rather than the application popping up with the definitions, it can  be
       done by enabling Notifications. This is done via the Notify tool button
       or by right-clicking on Artha’s system tray  icon,  and  tick  off  the
       ’Notifications’  check box in the menu. When notifications are enabled,
       and the user selects text in a window and  presses  the  hotkey  combo,
       Artha  takes  the  prime definition of that term from WordNet and shows
       that definition as a system tray notification.

       Note: For the notifications feature to  be  present,  notify  library’s
       binary  (  should  be  available on your system. If not,
       Artha will not expose the feature at all. Also the  notification-daemon
       should installed for the notifications to show up.


       Suggestions  is  a  feature that gives out possible near matches when a
       misspelled word is searched for. To  have  this  feature,  your  system
       should  have  libenchant  binary  (  installed  and  an
       English dict file  for  the  spell  engine  to  refer  (locale  doesn’t


       Artha  has  a World Wide Web site at From
       this web site users can know more about  the  Artha  project  and  also
       download its source and binary distributions for various distros.


       Sundaram Ramaswamy <>