文献紹介 ( 02/18/2016 )

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1. ழມ ܚथ ௕Ԭٕज़Պֶେֶ ࣗવݴޠॲཧݚڀࣨ จݙ঺հ(2016/02/18)
2. ঺հจݙ Arti Ramesh, Shachi H. Kumar, James Foulds, and Lise Getoor. 2015. Weakly Supervised Models of Aspect-Sentiment for Online Course Discussion Forums. In Proceed- ings of the Annual Meeting of the Association for Computational Linguistics (ACL). 2
3. ֓ཁ • هࣄͷτϐοΫ΍࿩ऀͷײ৘Λಛఆ͢Δ͜ͱʹ ΑΓɺγεςϜͷ໰୊఺΁ͷରॲ΍ੜెͷؔ৺ͷ ޲্ʹ໾ཱͭ. • طଘͷϞσϧʹϧʔϧΛՃ͑Δ͜ͱʹΑΓɺ͞ ΒͳΔهࣄͷ෼ྨ͕Մೳʹͳͬͨ. 3
4. MOOCs • Massive Open Online Courses. • Πϯλʔωοτ্ͰडߨͰ͖ΔڭҭγεςϜ. • ੈքதͰར༻͞Ε͓ͯΓɺඇৗʹଟ͘ͷίʔε͕ ଘࡏ͢Δ. • ࢀՃऀಉ࢜Ͱͷٞ࿦Λߦ͏͜ͱ͕ग़དྷΔ. 4
5. MOOC aspects 5 Table2 coarse and fine aspects
6. Seeded LDA Model • τϐοΫɾײ৘ਪఆͷͨΊʹ༻͍ΒΕΔϞσϧ. • LDA ͷҰछͰ͋Γɺγʔυͱݺ͹ΕΔਪఆͷࢦ ඪͱͳΔ୯ޠΛख͕͔ΓʹਪఆΛߦ͏. • ࠓճ͸ਓखͰͷ৘ใ෇༩Λߦ͍ɺγʔυͷσʔλ ηοτΛ४උͨ͠ɻ 6
7. σʔληοτ • Ϋϥ΢υιʔγϯάΛ༻͍ͯɺ୯ޠʹ৘ใΛ෇༩ ͢Δ. • ຊ࣮ݧͰ͸ Crowdflower Λ࢖༻. • ֤هࣄʹ͸গͳ͘ͱ΋ 3 ਓ͕࡞ۀʹ౰ͨΔ. • ৴པ౓Λܭࢉ͠ɺ৴པੑ͕௿͍৘ใ͸࠾༻͠ͳ ͍. 7
8. γʔυ 8 Table3 Seed words for coarse aspects Table4 Seed words for fine aspects
9. γʔυ Table5 Seed words for sentiment Table6 Seed words for sentiment specific to online courses 9
10. ࣮ݧ • NLTK toolkit ʹΑΓɺهࣄͷτʔΫϯԽͱες ϜΛߦ͏. • The topic model Dirichlet hyper-parameter. • α = 0.01, β = 0.01. • Table 3, 4, 5 ͷγʔυͰ͸ɺτϐοΫ਺ͱಉ͡਺ ͷγʔυτϐοΫΛ࢖༻. • Table 6, 3 ͷγʔυͰ͸ɺ10 τϐοΫΛ࢖༻. 10
11. ݁Ռ 11
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13. ग़ྗ 13