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[(number)-353(of)-353(all)-353(questions)-353(in)-353(each)-353(data)-353(is)-353(gi)24(v)15(en)-352(belo)24(w)-352(the)-353(name)-353(of)]TJ
0 -10.45 TD
[(data,)-358(and)-336(the)-337(number)-336(of)-337(questions)-336(in)-337(subsets)-336(in)-336(each)-337(data)-336(is)-337(100.)]TJ
0 -10.46 TD
[(W)79(e)-367(observ)14(ed)-367(the)-367(same)-368(trends)-368(for)-368(the)-368(three)-367(methods)-368(on)-368(the)-368(three)]TJ
T*
[(data:)-437(both)]TJ
/T1_2 8.96 Tf
40.1 0 Td
(KL)Tj
/T1_0 8.96 Tf
13.56 0 Td
(and)Tj
/T1_2 8.96 Tf
15.76 0 Td
(G+KL)Tj
/T1_0 8.96 Tf
24.32 0 Td
[(outperform)-313(the)-314(baseline)-313(method)]TJ
/T1_2 8.96 Tf
118.79 0 Td
(NA)Tj
/T1_0 8.96 Tf
13.57 0 Td
(and)Tj
/T1_2 8.96 Tf
-226.1 -10.46 Td
(G+KL)Tj
/T1_0 8.96 Tf
25.01 0 Td
(outperforms)Tj
/T1_2 8.96 Tf
47.32 0 Td
(KL)Tj
/T1_0 8.96 Tf
14.25 0 Td
[(\(statistically)-390(signi\002cant,)-425(p-v)24(alue)]TJ
/T1_5 8.96 Tf
120.88 0 Td
(<)Tj
/T1_0 8.96 Tf
10.67 0 Td
(0.01\).)Tj
-218.13 -10.46 Td
[(W)79(e)-313(also)-314(found)-314(that)-314(that)-314(the)-314(result)-314(on)-314(the)-315(subset)-314(is)-314(better)-314(than)-314(that)]TJ
0 -10.45 TD
[(on)-250(all)-250(questions)-250(as)-250(we)-250(observ)14(ed)-249(on)-250(fully)-250(annotated)-250(data.)]TJ
8.97 -10.46 Td
[(As)-440(a)-440(summary)64(,)-488(our)-440(techniques)-441(are)-440(able)-441(to)-441(ef)24(fecti)25(v)15(ely)-439(e)14(xtract)]TJ
-8.97 -10.46 Td
[(question-answer)-374(pairs:)-558(1\))-374(our)-374(question)-374(detection)-374(method)-374(outper)19(-)]TJ
0 -10.46 TD
[(formed)-417(rule-based)-417(methods)-418(and)-417(the)-417(method)-417([18];)-501(2\))-418(our)-417(graph-)]TJ
0 -10.45 TD
[(based)-510(method)-510(outperformed)-510(a)-509(baseline,)-575(three)-510(IR)-510(methods)-510(and)]TJ
0 -10.46 TD
[(classi\002cation-based)-373(re-ranking;)-434(3\))-373(the)-373(inte)14(gration)-372(of)-373(graph-based)]TJ
T*
[(model)-218(with)-219(classi\002cation)-218(method)-218(impro)14(v)15(ed)-218(the)-218(classi\002cation-based)]TJ
T*
[(re-ranking;)-250(4\))-250(the)-250(le)14(xical)-249(mapping)-250(did)-250(not)-250(help)-250(in)-250(our)-250(e)14(xperiments.)]TJ
/T1_1 11.95 Tf
0 -26.14 TD
[(6.)-1000(CONCLUSIONS)]TJ
/T1_0 8.96 Tf
8.97 -12.95 Td
[(In)-595(this)-596(paper)39(,)-681(we)-595(described)-596(a)-596(ne)24(w)-595(approach)-595(to)-596(e)14(xtracting)]TJ
-8.97 -10.46 Td
[(question-answer)-235(pairs)-235(from)-235(online)-235(forums.)-305(The)-235(e)14(xtracted)-234(question-)]TJ
0 -10.46 TD
[(answer)-306(pairs)-306(could)-306(be)-305(used)-306(to)-306(enrich)-306(the)-306(kno)24(wledge)-305(base)-306(of)-306(com-)]TJ
T*
[(munity)-257(based)-258(QA)-257(service,)-260(instant)-257(answer)-258(service)-257(and)-257(Chatbot.)-333(Ex-)]TJ
0 -10.45 TD
[(perimental)-268(results)-268(on)-268(real)-268(data)-268(sho)24(w)-267(that)-268(our)-268(approach)-268(is)-268(ef)24(fecti)25(v)15(e.)]TJ
0 -10.46 TD
[(In)-266(the)-266(future,)-270(we)-266(will)-265(in)39(v)15(estig)5(ate)-265(the)-266(follo)24(wing)-265(problems:)-342(1\))-266(to)-266(de-)]TJ
T*
[(tect)-274(questions)-273(without)-274(answers;)-286(2\))-274(to)-274(re)24(visit)-272(more)-274(TREC)-274(QA)-274(tech-)]TJ
T*
[(niques)-380(to)-381(see)-380(if)-381(the)14(y)-379(can)-381(help)-380(answer)-381(detection)-380(in)-380(forums)]TJ
/T1_0 5.98 Tf
218.61 3.81 Td
(10)Tj
/T1_0 8.96 Tf
6.48 -3.81 Td
[(;)-445(3\))]TJ
-225.09 -10.45 Td
[(to)-374(model)-374(the)-374(relationship)-373(of)-374(questions)-374(in)-374(the)-374(same)-374(thread)-374(to)-374(im-)]TJ
T*
[(pro)14(v)15(e)-250(answer)-251(detection,)-251(considering)-251(that)-252(each)-251(thread)-251(contain)-251(about)]TJ
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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S
Q
Q
BT
/T1_0 5.98 Tf
1.0003 0 0 1.0003 51.8043 78.5004 Tm
(10)Tj
/T1_0 7.97 Tf
6.48 -3.81 Td
(In)Tj
1.0003 0 0 1.0003 72 720 Tm
-5.086 -645.13 Td
[(our)-250(corpus)-250(there)-250(are)-250(10%)-250(f)9(actoid)-249(questions)-250(well)-250(studied)-250(in)-250(TREC)-250(QA)]TJ
ET
q
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Q
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q
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BT
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1.0003 0 0 1.0003 334.8736 736.4846 Tm
(Data)Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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Q
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BT
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1.0003 0 0 1.0003 375.2449 736.4846 Tm
(Method)Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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Q
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BT
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1.0003 0 0 1.0003 413.8957 736.4846 Tm
(P@1\(#\))Tj
1.0003 0 0 1.0003 72 720 Tm
372.201 16.48 Td
[(on)-250(all)-250(Qs)]TJ
ET
q
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1.0003 0 0 1.0003 487.4563 736.4846 Tm
(P@1\(#\))Tj
1.0003 0 0 1.0003 72 720 Tm
445.741 16.48 Td
[(on)-250(subset)]TJ
ET
q
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Q
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q
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Q
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BT
/T1_2 8.96 Tf
1.0003 0 0 1.0003 326.0011 727.022 Tm
(A-Trip2)Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
0.5 w
q 1 0 0 1 297.78 4.33 cm
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BT
/T1_0 8.96 Tf
1.0003 0 0 1.0003 382.877 727.022 Tm
(N)Tj
1.0003 0 0 1.0003 72 720 Tm
316.946 7.02 Td
(A)Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
0.5 w
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S
Q
Q
BT
/T1_0 8.96 Tf
1.0003 0 0 1.0003 425.499 727.022 Tm
(0.611\(102\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
0.5 w
q 1 0 0 1 409.96 4.33 cm
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S
Q
Q
BT
/T1_0 8.96 Tf
1.0003 0 0 1.0003 501.9203 727.022 Tm
(0.730\(73\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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q 1 0 0 1 484.75 4.33 cm
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q
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BT
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1.0003 0 0 1.0003 333.6232 718.0495 Tm
(\(167\))Tj
ET
q
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1.0003 0 0 1.0003 383.2171 718.0495 Tm
(KL)Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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Q
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BT
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(0.647\(108\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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S
Q
Q
BT
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1.0003 0 0 1.0003 501.9203 718.0495 Tm
(0.740\(74\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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S
Q
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q
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Q
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q
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S
Q
Q
BT
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1.0003 0 0 1.0003 377.4455 709.0869 Tm
(G+KL)Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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Q
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BT
/T1_1 8.96 Tf
1.0003 0 0 1.0003 425.499 709.0869 Tm
(0.743)Tj
/T1_0 8.96 Tf
20.17 0 Td
(\(124\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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S
Q
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BT
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1.0003 0 0 1.0003 501.9203 709.0869 Tm
(0.860)Tj
/T1_0 8.96 Tf
20.17 0 Td
(\(86\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
0.5 w
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q
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q
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Q
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BT
/T1_2 8.96 Tf
1.0003 0 0 1.0003 322.19 699.6243 Tm
(A-Lonely)Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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Q
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1.0003 0 0 1.0003 382.877 699.6243 Tm
(N)Tj
1.0003 0 0 1.0003 72 720 Tm
316.946 -20.37 Td
(A)Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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S
Q
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BT
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1.0003 0 0 1.0003 425.499 699.6243 Tm
(0.474\(128\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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S
Q
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BT
/T1_0 8.96 Tf
1.0003 0 0 1.0003 501.9203 699.6243 Tm
(0.666\(68\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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q
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1.0003 0 0 1.0003 333.6232 690.6518 Tm
(\(270\))Tj
ET
q
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1.0003 0 0 1.0003 383.2171 690.6518 Tm
(KL)Tj
ET
q
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1.0003 0 0 1.0003 425.499 690.6518 Tm
(0.541\(146\))Tj
ET
q
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Q
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BT
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1.0003 0 0 1.0003 501.9203 690.6518 Tm
(0.745\(76\))Tj
ET
q
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q
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BT
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1.0003 0 0 1.0003 377.4455 681.6893 Tm
(G+KL)Tj
ET
q
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1.0003 0 0 1.0003 425.499 681.6893 Tm
(0.622)Tj
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20.17 0 Td
(\(168\))Tj
ET
q
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1.0003 0 0 1.0003 501.9203 681.6893 Tm
(0.843)Tj
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20.17 0 Td
(\(86\))Tj
ET
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q
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BT
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1.0003 0 0 1.0003 324.8808 672.2266 Tm
(A-Boots)Tj
ET
q
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(N)Tj
1.0003 0 0 1.0003 72 720 Tm
316.946 -47.76 Td
(A)Tj
ET
q
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(0.472\(169\))Tj
ET
q
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BT
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(0.730\(73\))Tj
ET
q
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(\(358\))Tj
ET
q
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(KL)Tj
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(0.494\(177\))Tj
ET
q
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(0.740\(74\))Tj
ET
q
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BT
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1.0003 0 0 1.0003 377.4455 654.2916 Tm
(G+KL)Tj
ET
q
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1.0003 0 0 1.0003 425.499 654.2916 Tm
(0.612)Tj
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20.17 0 Td
(\(219\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
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BT
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1.0003 0 0 1.0003 501.9203 654.2916 Tm
(0.880)Tj
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20.17 0 Td
(\(88\))Tj
ET
q
1.0002747 0 0 1.0002747 72 720 cm
0.5 w
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Q
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q
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S
Q
Q
BT
/T1_1 8.96 Tf
1.0003 0 0 1.0003 364.3918 633.9659 Tm
(T)Tj
1.0003 0 0 1.0003 72 720 Tm
297.462 -86.01 Td
[(able)-249(8:)-310(The)-250(e)14(v)10(aluation)-249(on)-250(other)-250(data)]TJ
/T1_0 8.96 Tf
-52.722 -11.75 Td
[(3)-288(questions)-288(on)-288(a)19(v)15(erage)-287(and)-288(the)14(y)-287(may)-289(share)-288(the)-288(same)-288(answer)-288(para-)]TJ
T*
[(graph.)-327(In)-256(addition,)-257(we)-256(will)-255(also)-256(in)39(v)15(estig)5(ate)-255(the)-256(ef)24(fecti)25(v)15(eness)-254(of)-256(our)]TJ
T*
[(techniques)-250(in)-250(passage)-250(retrie)24(v)25(al)-249(on)-250(TREC)-250(QA)-250(data.)]TJ
/T1_1 11.95 Tf
0 -23.3 TD
[(7.)-1000(REFERENCES)]TJ
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3.99 -6.07 Td
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