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V´
 ıcejazyˇn´ sledov´n´ a vyhled´v´n´
        c e       a ı         a a ı




              V´clav Nov´k
               a        a
        Yellow Snow, Captaworks

            vaclav@yellowsnow.cz


    New Media Inspiration, leden 2012
Yeseter

• Nov´ v´
     y ıcejazyˇn´ vyhled´vaˇ ve spoleˇensk´ch m´di´
                c y          a c            c    y      e ıch
  ◦ Sb´ a vybran´ diskuze, blogy, f´ra a soci´ln´ s´ e
       ır´       e                  o         a ı ıtˇ
  ◦ Tˇıd´ nalezen´ zm´
      r´ ı       e    ınky do t´mat a t´matick´ch skupin
                                 e       e      y
  ◦ Zobrazuje statistiky a grafy pro t´mata, zdroje a autory
                                       e
  ◦ Umoˇnuje pokroˇil´ vyhled´v´n´ a exporty
          zˇ         c e         a a ı
  ◦ Pˇıdavn´ funkce (reporting, alerting, workflow, detekce spamu,
      r´     e
    sentiment, ˇebˇıˇek sd´ ych odkaz˚, nastaviteln´ n´stˇnka,
               z r´c       ılen´         u             a a e
    rebranding, vyˇazen´ zdroj˚ pro urˇit´ projekt, real-time API)
                   r    ı      u        c y
• Pˇıstup z yeseter.com, wlip.cz, mss-adv.newtonmedia.cz
   r´
• Uˇivatel´:
   z      e
  ◦ Firmy, o kter´ch se mluv´
                  y         ı
  ◦ Marketing
  ◦ Vˇda, politia a v´zkum (sociologie, stranick´ sekretari´ty)
       e             y                          e          a
  ◦ Bezpeˇnostn´ sloˇky (zakryt´ z´jmu pˇed prohled´van´mi servery)
          c      ı z           ı a        r          a y
 2 z 14
Rozpozn´n´ jazyka
       a ı

• U diskuzn´ f´r a blog˚ se lze ˇıdit dom´nou
           ıch o       u        r´       e
• Nˇkter´ soci´ln´ s´ e ˇıkaj´ o uˇivatel´ vˇe, jin´ ne
   e    e     a ı ıtˇ r´ ı        z      ıch s     e

Probl´mov´ zdroje
     e   e
• YouTube
• Twitter
• Google+

• N´ˇeˇ´ nespisovn´ tvary
   ar cı,         e
• Chybˇj´ ı diakritika
      e ıc´
• Kr´tk´ texty, zkratky, #tagy, @jm´na, exotick´ ♥♥♥znaky♥♥♥
    a e                            e           e

 3 z 14
Nejhorˇ´ zm´
      sı   ınka v˚bec
                 u




 4 z 14
Kr´tk´ texty
  a e




 5 z 14
Sm´sen´ texty
  ıˇ e




 6 z 14
Podivn´ slova
      a




 7 z 14
Kategorizace t´mat (sn´
              e       ımky z online.wlip.cz)


• V´
   ıcejazyˇn´ projekty sd´ ı strukturu t´mat
          c e            ılej´          e
• Lze srovn´vat tyt´ˇ grafy pro r˚zn´ zemˇ:
           a       ez            u e     e




 8 z 14
Srovnateln´ vizualizace: t´mata znaˇky: HU × CZ
          e               e        c




9 z 14
Nesrovnateln´ vizualizace? t´mata dom´n: PL × CZ
            e               e        e




10 z 14
Stemming


• Stemming umoˇnuje vyhled´vat r˚zn´ tvary t´hoˇ slova
              zˇ          a     u e         e z
•  Nokie“, Noki´ ım“, Nokii“, Nokia“
  ”        ”           ”       ”
• Nˇkdy neˇ´douc´ Matrix“ × Matrika“, Sportif“ × Sportage“
    e     za      ı:
                     ”           ”          ”    ”
• R˚zn´ typy jazyk˚ vyˇaduj´ r˚zn´ pˇıstup:
    u e            u z     ı u y r´
    ◦     Aglutinaˇn´ nˇkolik pˇıpon
                    c ı: e        r´                    mad’arˇtina, tureˇtina
                                                               s          c
    ◦     Flektivn´ jedna koncovka
                   ı:                                          ˇeˇtina, ruˇtina
                                                               c s        s
    ◦     Izolaˇn´ nejjednoduˇˇ´ t´mˇˇ nen´ tˇeba
               c ı:             ssı, e er   ı r       mandar´ stina, angliˇtina
                                                            ınˇ           c
    ◦     Introflektivn´ tˇˇk´: variace uvnitˇ slova
                        ı: ez y             r                         arabˇtina
                                                                          s
    ◦     Polysyntetick´: tˇˇk´: nezn´me hranice slov
                          y ez y       a                           papu´nˇtina
                                                                        a s
• Ve skuteˇnosti jsou jazyky smˇs´ typ˚ a maj´ tendenci se pˇesouvat.
          c                    eı     u      ı              r


11 z 14
Specifika stemmingu v soci´ln´ m´di´
                         a ıch e ıch



• Pravidla psan´ pro spisovnou ˇeˇtinu nefunguj´
                 a                  c s             ı:
  ◦ Znaˇky, zkratky ( Ikea“ → Ikey“ vs. Nokia“ → Nokie“, HM“ →
         c
                       ”          ”         ”          ”         ”
     HMka“)
    ”
  ◦ N´ˇeˇ´ ( votravujou“, nab´
      ar cı                      ızej“, kupuj´“)
                                              o
              ”              ”          ”
  ◦ V´ chyb neˇ v novin´ch (st´tn´ zpr´vy)
      ıc         z         a      a ı     a
  ◦ Interpunkce ( kaˇd´ tv˚j dotek tu bolest hoj´ ritul se l´sko jeˇtˇ
                      z y u                      ı.Pˇ       a      se
                    ”
    bl´z,to jak tˇ miluji“)
      ıˇ         e
                                ˇ
  ◦ Diakritika (kl´cov´ slova ( CS“), koncovky)
                   ıˇ a
                               ”




12 z 14
Smˇry ˇeˇen´
   e r s ı


    • Dva alternativn´ pˇıstupy:
                     ı r´
      ◦ Opravit a normalizovat text (kolik lid´ to dok´ˇe?)
                                              ı       az
      ◦ Rozvolnˇn´ pravidel a klasifikace slov na z´kladˇ podobnosti
                e ı                                a    e


Opravy a desambiguace                    Fuzzy matching
+   V principu lze dos´hnout 100%
                       a                 −   Nelze b´t 100% uspˇˇn´
                                                    y         ´ es ı
−   N´roˇn´ na implementaci
     a c e                               +   Lze rychle zlepˇit baseline
                                                            s
+   V praxi lepˇ´ pˇesnost
               sı r                      +   V praxi lepˇ´ pokryt´
                                                        sı       ı
−   V praxi horˇ´ pokryt´
                sı       ı               −   V praxi horˇ´ pˇesnost
                                                         sı r



    13 z 14
Dalˇ´ v´voj zpracov´n´ jazyk˚ v Yeseteru
   sı y            a ı      u
• Ladˇn´ modelu parametr˚ stemmingu pro jednotliv´ jazyky
      e ı                     u                     e
• Sbl´zen´ moˇnost´ ad hoc hled´n´ a klasifikace do t´mat
     ıˇ ı     z     ı            a ı                e
  ◦ Klasifikace umoˇnuje v´bˇrov´ zak´z´n´ stemmingu a oper´tor MINUS
                     zˇ      y e e    a a ı               a
  ◦ Ad hoc hled´n´ umoˇnuje fuzzy matching v okruhu omezen´m
                a ı       zˇ                               e
     Levenshteinovskou vzd´lenost´
                             a   ı
  ◦ Ad hoc hled´n´ um´ zohlednit bl´
                a ı     ı          ızkost slov




14 z 14
Dalˇ´ v´voj zpracov´n´ jazyk˚ v Yeseteru
   sı y            a ı      u
• Ladˇn´ modelu parametr˚ stemmingu pro jednotliv´ jazyky
      e ı                     u                     e
• Sbl´zen´ moˇnost´ ad hoc hled´n´ a klasifikace do t´mat
     ıˇ ı     z     ı            a ı                e
  ◦ Klasifikace umoˇnuje v´bˇrov´ zak´z´n´ stemmingu a oper´tor MINUS
                     zˇ      y e e    a a ı               a
  ◦ Ad hoc hled´n´ umoˇnuje fuzzy matching v okruhu omezen´m
                a ı       zˇ                               e
     Levenshteinovskou vzd´lenost´
                             a   ı
  ◦ Ad hoc hled´n´ um´ zohlednit bl´
                a ı     ı          ızkost slov

Dˇkuji. Dalˇ´ novinky a podrobnosti:
 e         sı


 • twitter.com/hlidka
 • yeseter.com
 • wlip.cz


14 z 14

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Vícejazyčný monitoring sociálních médií Yeseter

  • 1. V´ ıcejazyˇn´ sledov´n´ a vyhled´v´n´ c e a ı a a ı V´clav Nov´k a a Yellow Snow, Captaworks vaclav@yellowsnow.cz New Media Inspiration, leden 2012
  • 2. Yeseter • Nov´ v´ y ıcejazyˇn´ vyhled´vaˇ ve spoleˇensk´ch m´di´ c y a c c y e ıch ◦ Sb´ a vybran´ diskuze, blogy, f´ra a soci´ln´ s´ e ır´ e o a ı ıtˇ ◦ Tˇıd´ nalezen´ zm´ r´ ı e ınky do t´mat a t´matick´ch skupin e e y ◦ Zobrazuje statistiky a grafy pro t´mata, zdroje a autory e ◦ Umoˇnuje pokroˇil´ vyhled´v´n´ a exporty zˇ c e a a ı ◦ Pˇıdavn´ funkce (reporting, alerting, workflow, detekce spamu, r´ e sentiment, ˇebˇıˇek sd´ ych odkaz˚, nastaviteln´ n´stˇnka, z r´c ılen´ u a a e rebranding, vyˇazen´ zdroj˚ pro urˇit´ projekt, real-time API) r ı u c y • Pˇıstup z yeseter.com, wlip.cz, mss-adv.newtonmedia.cz r´ • Uˇivatel´: z e ◦ Firmy, o kter´ch se mluv´ y ı ◦ Marketing ◦ Vˇda, politia a v´zkum (sociologie, stranick´ sekretari´ty) e y e a ◦ Bezpeˇnostn´ sloˇky (zakryt´ z´jmu pˇed prohled´van´mi servery) c ı z ı a r a y 2 z 14
  • 3. Rozpozn´n´ jazyka a ı • U diskuzn´ f´r a blog˚ se lze ˇıdit dom´nou ıch o u r´ e • Nˇkter´ soci´ln´ s´ e ˇıkaj´ o uˇivatel´ vˇe, jin´ ne e e a ı ıtˇ r´ ı z ıch s e Probl´mov´ zdroje e e • YouTube • Twitter • Google+ • N´ˇeˇ´ nespisovn´ tvary ar cı, e • Chybˇj´ ı diakritika e ıc´ • Kr´tk´ texty, zkratky, #tagy, @jm´na, exotick´ ♥♥♥znaky♥♥♥ a e e e 3 z 14
  • 4. Nejhorˇ´ zm´ sı ınka v˚bec u 4 z 14
  • 5. Kr´tk´ texty a e 5 z 14
  • 6. Sm´sen´ texty ıˇ e 6 z 14
  • 7. Podivn´ slova a 7 z 14
  • 8. Kategorizace t´mat (sn´ e ımky z online.wlip.cz) • V´ ıcejazyˇn´ projekty sd´ ı strukturu t´mat c e ılej´ e • Lze srovn´vat tyt´ˇ grafy pro r˚zn´ zemˇ: a ez u e e 8 z 14
  • 9. Srovnateln´ vizualizace: t´mata znaˇky: HU × CZ e e c 9 z 14
  • 10. Nesrovnateln´ vizualizace? t´mata dom´n: PL × CZ e e e 10 z 14
  • 11. Stemming • Stemming umoˇnuje vyhled´vat r˚zn´ tvary t´hoˇ slova zˇ a u e e z • Nokie“, Noki´ ım“, Nokii“, Nokia“ ” ” ” ” • Nˇkdy neˇ´douc´ Matrix“ × Matrika“, Sportif“ × Sportage“ e za ı: ” ” ” ” • R˚zn´ typy jazyk˚ vyˇaduj´ r˚zn´ pˇıstup: u e u z ı u y r´ ◦ Aglutinaˇn´ nˇkolik pˇıpon c ı: e r´ mad’arˇtina, tureˇtina s c ◦ Flektivn´ jedna koncovka ı: ˇeˇtina, ruˇtina c s s ◦ Izolaˇn´ nejjednoduˇˇ´ t´mˇˇ nen´ tˇeba c ı: ssı, e er ı r mandar´ stina, angliˇtina ınˇ c ◦ Introflektivn´ tˇˇk´: variace uvnitˇ slova ı: ez y r arabˇtina s ◦ Polysyntetick´: tˇˇk´: nezn´me hranice slov y ez y a papu´nˇtina a s • Ve skuteˇnosti jsou jazyky smˇs´ typ˚ a maj´ tendenci se pˇesouvat. c eı u ı r 11 z 14
  • 12. Specifika stemmingu v soci´ln´ m´di´ a ıch e ıch • Pravidla psan´ pro spisovnou ˇeˇtinu nefunguj´ a c s ı: ◦ Znaˇky, zkratky ( Ikea“ → Ikey“ vs. Nokia“ → Nokie“, HM“ → c ” ” ” ” ” HMka“) ” ◦ N´ˇeˇ´ ( votravujou“, nab´ ar cı ızej“, kupuj´“) o ” ” ” ◦ V´ chyb neˇ v novin´ch (st´tn´ zpr´vy) ıc z a a ı a ◦ Interpunkce ( kaˇd´ tv˚j dotek tu bolest hoj´ ritul se l´sko jeˇtˇ z y u ı.Pˇ a se ” bl´z,to jak tˇ miluji“) ıˇ e ˇ ◦ Diakritika (kl´cov´ slova ( CS“), koncovky) ıˇ a ” 12 z 14
  • 13. Smˇry ˇeˇen´ e r s ı • Dva alternativn´ pˇıstupy: ı r´ ◦ Opravit a normalizovat text (kolik lid´ to dok´ˇe?) ı az ◦ Rozvolnˇn´ pravidel a klasifikace slov na z´kladˇ podobnosti e ı a e Opravy a desambiguace Fuzzy matching + V principu lze dos´hnout 100% a − Nelze b´t 100% uspˇˇn´ y ´ es ı − N´roˇn´ na implementaci a c e + Lze rychle zlepˇit baseline s + V praxi lepˇ´ pˇesnost sı r + V praxi lepˇ´ pokryt´ sı ı − V praxi horˇ´ pokryt´ sı ı − V praxi horˇ´ pˇesnost sı r 13 z 14
  • 14. Dalˇ´ v´voj zpracov´n´ jazyk˚ v Yeseteru sı y a ı u • Ladˇn´ modelu parametr˚ stemmingu pro jednotliv´ jazyky e ı u e • Sbl´zen´ moˇnost´ ad hoc hled´n´ a klasifikace do t´mat ıˇ ı z ı a ı e ◦ Klasifikace umoˇnuje v´bˇrov´ zak´z´n´ stemmingu a oper´tor MINUS zˇ y e e a a ı a ◦ Ad hoc hled´n´ umoˇnuje fuzzy matching v okruhu omezen´m a ı zˇ e Levenshteinovskou vzd´lenost´ a ı ◦ Ad hoc hled´n´ um´ zohlednit bl´ a ı ı ızkost slov 14 z 14
  • 15. Dalˇ´ v´voj zpracov´n´ jazyk˚ v Yeseteru sı y a ı u • Ladˇn´ modelu parametr˚ stemmingu pro jednotliv´ jazyky e ı u e • Sbl´zen´ moˇnost´ ad hoc hled´n´ a klasifikace do t´mat ıˇ ı z ı a ı e ◦ Klasifikace umoˇnuje v´bˇrov´ zak´z´n´ stemmingu a oper´tor MINUS zˇ y e e a a ı a ◦ Ad hoc hled´n´ umoˇnuje fuzzy matching v okruhu omezen´m a ı zˇ e Levenshteinovskou vzd´lenost´ a ı ◦ Ad hoc hled´n´ um´ zohlednit bl´ a ı ı ızkost slov Dˇkuji. Dalˇ´ novinky a podrobnosti: e sı • twitter.com/hlidka • yeseter.com • wlip.cz 14 z 14