{"id":364,"date":"2022-06-17T08:59:02","date_gmt":"2022-06-17T08:59:02","guid":{"rendered":"https:\/\/nlp.pef.mendelu.cz\/?page_id=364"},"modified":"2022-07-29T16:21:46","modified_gmt":"2022-07-29T16:21:46","slug":"multicriterial-text-analysis","status":"publish","type":"page","link":"https:\/\/nlp.pef.mendelu.cz\/index.php\/multicriterial-text-analysis\/","title":{"rendered":"Multicriterial\u00a0Text Analysis"},"content":{"rendered":"\n
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V\u00fdsledkem MTA<\/a> projektu je jeden komplexn\u00ed syst\u00e9m seskupuj\u00edc\u00ed v\u00edce drobn\u011bj\u0161\u00edch aplikac\u00ed pro anal\u00fdzu text\u016f zapsan\u00fdch v p\u0159irozen\u00e9m jazyce. V\u00fdsledek je sou\u010d\u00e1st\u00ed \u0159e\u0161en\u00ed projektu OPPIK Aplikace Ministerstva pr\u016fmyslu a obchodu, jeho\u017e \u0159e\u0161en\u00ed prob\u00edhalo v letech 2018 a\u017e 2020.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Anal\u00fdza recenz\u00ed<\/h3>\n\n\n\n

Jeho nejd\u016fle\u017eit\u011bj\u0161\u00ed sou\u010d\u00e1st\u00ed je aplikace pro z\u00edsk\u00e1v\u00e1n\u00ed a anal\u00fdzu n\u00e1zor\u016f u\u017eivatel\u016f vybran\u00fdch segment\u016f produkt\u016f nazvan\u00fd Anal\u00fdza recenz\u00ed<\/a>. C\u00edlem t\u00e9to aplikace je usnadnit u\u017eivatel\u016fm proces rozhodov\u00e1n\u00ed p\u0159i v\u00fdb\u011bru r\u016fzn\u00fdch produkt\u016f. U\u017eivatel specifikuje n\u00e1zev produktu, kter\u00fd jej zaj\u00edm\u00e1, a v\u00fdstupem je zobecn\u011bn\u00fd sumarizovan\u00fd pohled na dan\u00fd produkt.<\/p>\n\n\n\n

Aplikace se sna\u017e\u00ed pomoci u\u017eivatel\u016fm zorientovat se ve velk\u00e9m mno\u017estv\u00ed n\u00e1zor\u016f publikovan\u00fdch na internetu na konkr\u00e9tn\u00ed zbo\u017e\u00ed, kter\u00e9 by si cht\u011bli zakoupit. Tyto u\u017eivatelsk\u00e9 recenze jsou rozesety na nejr\u016fzn\u011bj\u0161\u00edch diskusn\u00edch f\u00f3rech, webech pro hodnocen\u00ed produkt\u016f \u010di tematick\u00fdch port\u00e1lech zab\u00fdvaj\u00edc\u00edch se konkr\u00e9tn\u00ed problematikou. Recenze jsou samoz\u0159ejm\u011b publikov\u00e1ny v r\u016fzn\u00fdch jazyc\u00edch. Pro b\u011b\u017en\u00e9ho u\u017eivatele je pak obt\u00ed\u017en\u00e9 tyto informace vyhledat, zorientovat se v nich a ud\u011blat si na jejich z\u00e1klad\u011b vlastn\u00ed n\u00e1zor.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

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Chatbot<\/h3>\n<\/div><\/div>\n<\/div>\n\n\n\n
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Samostatnou aplikac\u00ed, kter\u00e1 navazuje na aplikaci pro hodnocen\u00ed produkt\u016f, je\u00a0chatbot<\/a>. Jeho c\u00edlem je formou dialogu pomoci u\u017eivateli s v\u00fdb\u011brem vhodn\u00e9ho produktu vybran\u00fdch produktov\u00fdch kategori\u00ed – nap\u0159\u00edklad mobiln\u00edho telefonu. Jde tedy o formu bli\u017e\u0161\u00ed b\u011b\u017en\u00e9mu u\u017eivateli, kter\u00fd m\u016f\u017ee m\u00edt pocit, jako by se bavil s odborn\u00edkem nebo sv\u00fdm zn\u00e1m\u00fdm.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

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Opinio<\/h3>\n\n\n\n

Relativn\u011b samostatnou aplikac\u00ed je i mobiln\u00ed aplikace opinio<\/a>, kter\u00e1 vyu\u017e\u00edv\u00e1 v\u00fdsledky anal\u00fdzy recenz\u00ed, ale dopl\u0148uje dal\u0161\u00ed zaj\u00edmav\u00e9 funkce. Mezi n\u011b pat\u0159\u00ed nap\u0159\u00edklad mo\u017enost skenov\u00e1n\u00ed produktov\u00fdch \u0161t\u00edtk\u016f (cenovek) p\u0159\u00edmo v obchod\u011b, tak aby u\u017eivatel nemusel zad\u00e1vat n\u00e1zvy produkt\u016f ru\u010dn\u011b. Vyhledan\u00e9 produkty lze snadno porovn\u00e1vat a p\u0159id\u00e1vat si je mezi obl\u00edben\u00e9 a op\u011bt se k nim po \u010dase vracet.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

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N\u00e1stroje<\/h3>\n\n\n\n

Dal\u0161\u00ed \u010d\u00e1st\u00ed v\u00fdsledn\u00e9ho software jsou n\u00e1stroje, kter\u00e9 demonstruj\u00ed d\u00edl\u010d\u00ed funk\u010dn\u00ed prvky aplikace pro hodnocen\u00ed produkt\u016f nebo prvky na ni navazuj\u00edc\u00ed a lze je vyu\u017e\u00edt i jako samostatn\u00e9 n\u00e1stroje pro zpracov\u00e1n\u00ed \u010di anal\u00fdzu textu. Mezi d\u00edl\u010d\u00ed n\u00e1stroje pat\u0159\u00ed nap\u0159\u00edklad:<\/p>\n\n\n\n

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  • odstra\u0148ov\u00e1n\u00ed nev\u00fdznamn\u00fdch slov (stop-slov<\/strong>)<\/li>
  • p\u0159evod slov do z\u00e1kladn\u00edho tvaru (lemmatizace<\/strong>)<\/li>
  • identifikace slovn\u00edch druh\u016f (POS tagger<\/strong>)<\/li>
  • identifikace sentimentu<\/li><\/ul>\n<\/div><\/div>\n<\/div>\n\n\n\n
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    Jejich pou\u017eit\u00ed je jednoduch\u00e9. U\u017eivatel do textov\u00e9ho pole nap\u00ed\u0161e text, kter\u00fd chce analyzovat a po stisknut\u00ed tla\u010d\u00edtka je mu zobrazen v\u00fdsledek. Ka\u017ed\u00fd n\u00e1stroj nab\u00edz\u00ed mo\u017enost vypln\u011bn\u00ed vzorov\u00fdm p\u0159\u00edkladem, na kter\u00e9m lze demonstrovat jeho fungov\u00e1n\u00ed. Mezi n\u00e1stroji je prezentov\u00e1n i vyhled\u00e1va\u010d \u010dl\u00e1nk\u016f k produkt\u016fm, kter\u00e9 jsou analyzov\u00e1ny v r\u00e1mci aplikace Anal\u00fdza recenz\u00ed. Zde u\u017eivatel uvede n\u00e1zev hledan\u00e9ho produktu a n\u00e1sledn\u011b je mu zobrazen seznam \u010dl\u00e1nk\u016f, kter\u00e9 se jej t\u00fdkaj\u00ed.<\/p>\n\n\n\n

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    V n\u00e1stroj\u00edch, kter\u00e9 vytv\u00e1\u0159\u00edme a pou\u017e\u00edv\u00e1me, se zam\u011b\u0159ujeme zejm\u00e9na na anal\u00fdzu text\u016f v \u010desk\u00e9m jazyce. D\u016fvodem je zejm\u00e9na to, \u017ee pro \u010desk\u00fd jazyk neexistuje takov\u00e9 mno\u017estv\u00ed hotov\u00fdch model\u016f a n\u00e1stroj\u016f, jako pro \u010de\u0161tinu. Neznamen\u00e1 to ale, \u017ee je v\u00fdsledek vyu\u017eiteln\u00fd pouze pro u\u017eivatele v \u010cesk\u00e9 republice. Dle zp\u011btn\u00e9 vazby od klient\u016f vyu\u017e\u00edvaj\u00edch na\u0161e n\u00e1stroje v\u00edme, \u017ee n\u00e1zory \u010desk\u00fdch z\u00e1kazn\u00edk\u016f jsou d\u016fle\u017eit\u00e9 i pro zahrani\u010dn\u00ed firmy. Nav\u00edc v\u00fdsledky anal\u00fdz jsou obecn\u011b pou\u017eiteln\u00e9 a informace o preferenc\u00edch z\u00e1kazn\u00edk\u016f mohou b\u00fdt snadno transformov\u00e1ny do jin\u00fdch jazyk\u016f. Na\u0161e natr\u00e9novan\u00e9 modely tak\u00e9 zp\u0159\u00edstup\u0148ujeme zahrani\u010dn\u00edm v\u00fdzkumn\u00edk\u016fm, kte\u0159\u00ed maj\u00ed z\u00e1jem porovnat v\u00fdsledky sv\u00fdch experiment\u016f s modely natr\u00e9novan\u00fdmi v jin\u00fdch jazyc\u00edch. Dopad \u0159e\u0161en\u00ed projektu tak nen\u00ed pouze lok\u00e1ln\u00ed, ale mezin\u00e1rodn\u00ed.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

    <\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

    V\u00fdsledkem MTA projektu je jeden komplexn\u00ed syst\u00e9m seskupuj\u00edc\u00ed v\u00edce drobn\u011bj\u0161\u00edch aplikac\u00ed pro anal\u00fdzu text\u016f zapsan\u00fdch v p\u0159irozen\u00e9m jazyce. V\u00fdsledek je […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-364","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/nlp.pef.mendelu.cz\/index.php\/wp-json\/wp\/v2\/pages\/364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nlp.pef.mendelu.cz\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nlp.pef.mendelu.cz\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nlp.pef.mendelu.cz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nlp.pef.mendelu.cz\/index.php\/wp-json\/wp\/v2\/comments?post=364"}],"version-history":[{"count":9,"href":"https:\/\/nlp.pef.mendelu.cz\/index.php\/wp-json\/wp\/v2\/pages\/364\/revisions"}],"predecessor-version":[{"id":583,"href":"https:\/\/nlp.pef.mendelu.cz\/index.php\/wp-json\/wp\/v2\/pages\/364\/revisions\/583"}],"wp:attachment":[{"href":"https:\/\/nlp.pef.mendelu.cz\/index.php\/wp-json\/wp\/v2\/media?parent=364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}