rtt t t - PowerPoint PPT Presentation

▲■❆ ♣❛rt✐❝✐♣❛t✐♦♥ ❛t ■◆❊❳ ❚✇❡❡t ❝♦♥t❡①t✉❛❧✐③❛t✐♦♥ ❏✳❱✳ ❈♦ss✉ ❯♥✐✈❡rs✐t② ♦❢ ❆✈✐❣♥♦♥✱ ❋r❛♥❝❡ ❈▲❊❋ ✲ ■◆❊❳✬✷✵✶✹ ✶✻ ❙❡♣t❡♠❜❡r ✷✵✶✹ ❆✉t❤♦rs ❏✉❛♥✲▼❛♥✉❡❧ ❚♦rr❡s✲▼♦r❡♥♦✱ ❏❡❛♥✲❱❛❧èr❡ ❈♦ss✉ ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ▲■❆ ❛t ■◆❊❳ ✷✵✶✹ ✶✴✽

P❧❛♥ ▲■❆ ❙②st❡♠s ♣❛rt✐❝✐♣❛t✐♥❣ t♦ ■◆❊❳ ❊①♣❡r✐♠❡♥ts ❛❜♦✉t t✇❡❡t ❝♦♥t❡①t✉❛❧✐③❛t✐♦♥ ❛♥❞ ❖❘▼ ❙②st❡♠s ♣❛rt✐❝✐♣❛t✐♥❣ t♦ ■◆❊❳ ❈♦rt❡① ❆rt❡① ❘❊● ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ▲■❆ ❛t ■◆❊❳ ✷✵✶✹ ✷✴✽

▲■❆ str❛t❡❣② ❢♦r ■◆❊❳ ❈❧❛ss✐❝❛❧ ❛♣♣r♦❛❝❤ ❝♦♠✐♥❣ ❢r♦♠ ■❘ ❱❡❝t♦r✲❙♣❛❝❡ ▼♦❞❡❧ ❜❛s❡❞ ❲✐t❤♦✉t ❧✐♥❣✉✐st✐❝s r❡s♦✉r❝❡s ❆r❝❤✐t❡❝t✉r❡ Tweet Contextualization Task CLEF-INEX Tweet Query Preprocessing INDRI Automatic Summarization System n best documents Context (Summary) ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ▲■❆ ❛t ■◆❊❳ ✷✵✶✹ ✸✴✽

❈❖❘❚❊❳ ■❞❡❛s P❧✉❣✲✐♥ ♠❡tr✐❝s ✭s②st❡♠s✮ ❝♦♠✐♥❣ ❢r♦♠ ■❘ ❞♦♠❛✐♥ ❱❡❝t♦r✲❙♣❛❝❡ ▼♦❞❡❧ ❜❛s❡❞ ❖♣t✐♠❛❧ ❉❡❝✐s✐♦♥ ❆❧❣♦r✐t❤♠ ♠❡r❣✐♥❣ t❤❡ ♠❡tr✐❝s ❆r❝❤✐t❡❝t✉r❡ Documents CORTEX Metrics / Weighting Entropy Language identification Frequency Decision Algorithm Split sentences Position Hamming Filtering . . . Normalization Interaction Preprocessing τ Postprocessing Compression rate Summary ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ▲■❆ ❛t ■◆❊❳ ✷✵✶✹ ✹✴✽

❆❘❚❊❳ ❉✉❛❧ ❝♦♠♣✉t❛t✐♦♥ ♦❢✿ Ps❡✉❞♦ ❙❡♥t❡♥❝❡✲t♦♣✐❝ Ps❡✉❞♦ ❲♦r❞✲t♦♣✐❝ ❱❡❝t♦r✲❙♣❛❝❡ ▼♦❞❡❧ ❜❛s❡❞ ■❞❡❛ VSM of words VSM of sentences w 1 s 1 b Global topic s 1 Lexical weight s 2 a w 2 word α w 1 s µ Sentence α w j w N s ρ s 3 w N s ρ w j cos α=( b x s µ )/|| b || || s µ || s µ Angle ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ▲■❆ ❛t ■◆❊❳ ✷✵✶✹ ✺✴✽

❘❊● ●r❛♣❤✲❜❛s❡❞ ❆❧❣♦r✐t❤♠ ❈♦♠♣✉t❡ t❤❡ ✇❡✐❣❤t ♦❢ t❤❡ ✈❡rt✐❝❡s ❢r♦♠ ❛❞❥❛❝❡♥❝② ♠❛tr✐① ❈♦♠♣✉t❡ t❤❡ ❞❡❣r❡❡ ♦❢ ❡❛❝❤ ✈❡rt❡①✿ s❤❛r❡❞ ✇♦r❞s ❲❡✐❣❤t✐♥❣ s❡♥t❡♥❝❡s ❆❧❣♦r✐t❤♠ ✐♥s♣✐r❡❞ ❢r♦♠ ❑r✉s❦❛❧✬s ❛❧❣♦r✐t❤♠ ❱❡rt❡① r❡♣r❡s❡♥t t❤❡ s❡♥t❡♥❝❡s ❙♦❧✉t✐♦♥ ❜❛s❡❞ ♦♥ ❛ ❝❛❧❝✉❧❛t✐♦♥ ♦❢ ❣r❡❡❞② s❡❛r❝❤ ♣❛t❤s ❚♦ ♠❛❦❡ ✐t ❡❛s✐❡r ●r❛♣❤ str✉❝t✉r❡ ❊❛❝❤ ♥♦❞❡ ✐s ❛ s❡♥t❡♥❝❡✱ ❧✐♥❦s ❛r❡ s❤❛r❡❞ ✇♦r❞s P❛t❤ ✐s ❝♦♠♣✉t❡❞ ✇✐t❤ ❝♦♠♠♦♥ ✇♦r❞s ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ▲■❆ ❛t ■◆❊❳ ✷✵✶✹ ✻✴✽

■◆❊❳ ✷✵✶✹ ❚✇❡❡t ❈♦♥t❡①t✉❛❧✐③❛t✐♦♥ ❚❛s❦ ❘❡❛❞❛❜✐❧✐t② ❊✈❛❧✉❛t✐♦♥ ✭❖✣❝✐❛❧ ❘❡s✉❧ts✮ ■❉ ❙②st❡♠s✿ ❘❊● ✸✺✽✱ ❈♦rt❡①✿ ✸✺✻✱ ❆rt❡①✿ ✸✺✼ ❘❡❛❞❛❜✐❧✐t② ✭✸ ✜rst ♣❧❛❝❡s✮ ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ▲■❆ ❛t ■◆❊❳ ✷✵✶✹ ✼✴✽

▲■❆ ♣❛rt✐❝✐♣❛t✐♦♥ t♦ ■◆❊❳ ❈♦♠♠♦♥ s❡♥t❡♥❝❡s ♣r❡✲♣r♦❝❡ss✐♥❣ ▼✐♥✐♠❛❧ ❝❧❡❛♥ ♦❢ t✇❡❡ts ✭♣✉♥❝t✉❛t✐♦♥✮ ❯❧tr❛✲st❡♠♠✐♥❣ ♦❢ ❈♦r♣✉s ✭✜✈❡ ❝❤❛r❛❝t❡rs st❡♠✮ ❇r❡❛❦ t❤❡ ❧♦♥❣ s❡♥t❡♥❝❡s ✭t❤❛♥ t❤❡ ♠❡❛♥ ❧❡♥❣t❤ ♦♥ t❤❡ ❝♦r♣✉s✮ ❙t❛t✐st✐❝❛❧ s✉♠♠❛r✐③❡rs ❲✐t❤♦✉t ❧✐♥❣✉✐st✐❝ r✉❧❡s ❲✐t❤♦✉t ❡①t❡r♥❛❧ ❦♥♦✇❧❡❞❣❡ ❘❡s✉❧ts ❚♦♣ r❡s✉❧ts ♦♥ ❘❡❛❞❛❜✐❧✐t② ❊✈❛❧✉❛t✐♦♥ ✾✲✶✷ ♣❧❛❝❡s ♦♥ ■♥❢♦r♠❛t✐✈❡♥❡ss ✭s❡♥t❡♥❝❡s ❛♥❞ ◆Ps✮ ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ▲■❆ ❛t ■◆❊❳ ✷✵✶✹ ✽✴✽

❈❛♥ ❚✇❡❡t ❈♦♥t❡①t✉❛❧✐③❛t✐♦♥ ❜❡ ❤❡❧♣❢✉❧ ❢♦r ❡✲r❡♣✉t❛t✐♦♥ ♠❛♥❛❣❡♠❡♥t ❄ ❏✳❱✳ ❈♦ss✉ ❯♥✐✈❡rs✐t② ♦❢ ❆✈✐❣♥♦♥✱ ❋r❛♥❝❡ ❈▲❊❋ ✲ ■◆❊❳✬✷✵✶✹ ✶✻ ❙❡♣t❡♠❜❡r ✷✵✶✹ ❆✉t❤♦r ❏✳✲❱✳ ❈♦ss✉ ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ❚✇❡❡t ❝♦♥t❡①t✉❛❧✐③❛t✐♦♥ ❛♥❞ ❖❘▼ ✶✴✶✸

❘❡♣▲❛❜ ✷✵✶✹ ❘❡♣✉t❛t✐♦♥ ❉✐♠❡♥s✐♦♥s t❛s❦ ❚❛s❦ ❙✉❜s❡t ♦❢ t❤❡ ❘❡♣❧❛❜ ✷✵✶✸ ❞❛t❛✲s❡t ❈❧❛ss✐✜❝❛t✐♦♥ ❛❝❝♦r❞✐♥❣ t♦ t❤❡ st❛♥❞❛r❞ r❡♣✉t❛t✐♦♥ ❞✐♠❡♥s✐♦♥ ✭✶✮ Pr♦❞✉❝ts✴❙❡r✈✐❝❡s ✭✷✮ ■♥♥♦✈❛t✐♦♥ ✭✸✮ ❲♦r❦♣❧❛❝❡ ✭✹✮ ❈✐t✐③❡♥s❤✐♣ ✭✺✮ ●♦✈❡r♥❛♥❝❡ ✭✻✮ ▲❡❛❞❡rs❤✐♣ ✭✼✮ P❡r❢♦r♠❛♥❝❡ ✭✽✮ ❯♥❞❡✜♥❡❞ Pr♦❞✉❝ts✴❙❡r✈✐❝❡s r❡♣r❡s❡♥t ♠♦r❡ t❤❛♥ ✺✵✪ ♦❢ t❤❡ ❞❛t❛✲s❡t ❖✣❝✐❛❧ r❡s✉❧ts ▲■❆ s②st❡♠s ♦♥❧② ✉s✐♥❣ t✇❡❡t ❝♦♥t❡♥t ❛♥❞ ❛✉t❤♦r ♣❡r❢♦r♠❡❞ ❜❛❞ ●❧❛s❣♦✇ r✉♥ ✉s✐♥❣ t✇❡❡t ❡♥r✐❝❤♠❡♥t ♦❜t❛✐♥❡❞ t❤❡ ❜❡st s❝♦r❡ ❙②st❡♠ ❋✲❙❝♦r❡ ❆❝❝✉r❛❝② ●❧❛s❣♦✇ ✹ ✹✽✳✾ ✻✾✳✺ ❇❛s❡❧✐♥❡ ✸✽ ✻✷✳✷ ▲■❆ ✹ ✶✻ ✺✹✳✾ ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ❚✇❡❡t ❝♦♥t❡①t✉❛❧✐③❛t✐♦♥ ❛♥❞ ❖❘▼ ✷✴✶✸

❍♦✇ ❢❛r ✇✐t❤♦✉t ❡♥r✐❝❤♠❡♥t ❄ ❆ ♥❡✇ s②st❡♠ ❈♦s✐♥✉s ❝❧❛ss✐✜❡r ✉s✐♥❣ ❜❛❣ ♦❢ ✇♦r❞s r❡♣r❡s❡♥t❛t✐♦♥ ❆ ❜❛s✐❝ ✈❡rs✐♦♥ ❆♥ ✐♠♣r♦✈❡❞ ✈❡rs✐♦♥ ✉s✐♥❣ ❛ ❜❡tt❡r ❢❡❛t✉r❡s s❡❧❡❝t✐♦♥ ❘❡s✉❧ts ♥❡❛r t❤❡ ❜❡st s②st❡♠ ❛♥❞ ♦✉t♣❡r❢♦r♠✐♥❣ ♦✉r ♦✣❝✐❛❧ r✉♥ ❘❡s✉❧ts ♦✈❡r t❤❡ ❝♦♠♣❧❡t❡ ❘❡♣❧❛❜ s❡t ❙②st❡♠ ❋✲❙❝♦r❡ ❆❝❝✉r❛❝② ❈♦s✐♥✉s ✇✐t❤ ❋❙ ✺✷ ✼✶ ●❧❛s❣♦✇ ✹ ✹✽✳✾ ✻✾✳✺ ❇❛s✐❝ ❈♦s✐♥✉s ✹✽ ✻✻ ▲■❆ ✹ ✶✻ ✺✹✳✾ ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ❚✇❡❡t ❝♦♥t❡①t✉❛❧✐③❛t✐♦♥ ❛♥❞ ❖❘▼ ✸✴✶✸

❋❡❛t✉r❡s s❡❧❡❝t✐♦♥ ❋❧✐♣✲✢♦♣ ♣r♦❝❡ss ❙❡❧❡❝t✐♥❣ t❤❡ ❜❡st ✇❡✐❣❤t❡❞ ✈❛❧✉❡s ♦❢ ❚❋✱ ■❉❋ ❛♥❞ P✉r✐t② ✐♥❞❡① ▲♦♦❦ ❢♦r t❤❡ ❜❡st ❛✉t♦♠❛t✐❝ ❛♥♥♦t❛t✐♦♥ ♦❢ t❤❡ t❡st s❡t t❤❛t ✇✐❧❧ ❛❧❧♦✇ ✉s t♦ r❡tr✐❡✈❡ t❤❡ tr❛✐♥ ❛♥♥♦t❛t✐♦♥ ❏❱ ❈♦ss✉ ✲ ▲■❆ ✲ ■◆❊❳ ✷✵✶✹ ❚✇❡❡t ❝♦♥t❡①t✉❛❧✐③❛t✐♦♥ ❛♥❞ ❖❘▼ ✹✴✶✸