%PDF-1.4 % 1 0 obj << /S /GoTo /D (section.1) >> endobj 4 0 obj (Introduction) endobj 5 0 obj << /S /GoTo /D (section.2) >> endobj 8 0 obj (User as Randomization Unit) endobj 9 0 obj << /S /GoTo /D (subsection.2.1) >> endobj 12 0 obj (Page Level Metrics and Delta Method) endobj 13 0 obj << /S /GoTo /D (section.3) >> endobj 16 0 obj (Page View as Randomization Unit) endobj 17 0 obj << /S /GoTo /D (subsection.3.1) >> endobj 20 0 obj (A Two Layer Randomization Framework) endobj 21 0 obj << /S /GoTo /D (subsection.3.2) >> endobj 24 0 obj (Page Level Metrics) endobj 25 0 obj << /S /GoTo /D (section.4) >> endobj 28 0 obj (Simulation and Empirical Results) endobj 29 0 obj << /S /GoTo /D (subsection.4.1) >> endobj 32 0 obj (Performance of Formula P) endobj 33 0 obj << /S /GoTo /D (subsection.4.2) >> endobj 36 0 obj (Variance Reduction) endobj 37 0 obj << /S /GoTo /D (section.5) >> endobj 40 0 obj (Conclusion) endobj 41 0 obj << /S /GoTo /D [42 0 R /Fit ] >> endobj 44 0 obj << /Length 2530 /Filter /FlateDecode >> stream xɒܶ>_ѧ])c'J"l0$zhZ؛8*7_|.V: $VەVEbQ% W?_\S&mw k5ظAofU#mˁ/-8ۿtyWe3ׯt 2HaJoEDeXj9fgzf:hs=pQP*˴?*/)Ngݽ|wMTnܙnS:tL6"1@`\3{CͿұ 3~Xܹk"+oΏ*LTBԛCeei`1,|X;y>I&G੩m{`}6ڌFVC|۪ՙ q&bHT~qhM[7Ya| n?4f.n$%!((ʵ`$G 27-ol_ k5)ۙ}HߏG \DR>D8VV(Id5ͽccdsЈ}By:X8% `{{dcu4i5Iâ]gG|͏Jn]E{@4WR3D_؆KTTGQҍ-爧0]Sv,3 BjQċ b5_͒.P]A)k?6F:f3v0-yv)q4 j-YU~xr8 S"RAB!:[j"e4OzD2pIy! eiwHHU]ot0`Pau{SR&L) AKXQXP=; hs_O%bYp A8k h w=pdv0eC R>XNXoiG^m&b@/gU_~) |ݕb=8k1Yk]$zCqcG;\Zb.EIe1z5ƚH/OG2021~MJ1 1۷>[G)hL vO1ñ"i_]#PɇQrQzm}(Ǒ#4F*D"Xz.@K/E] jqq6-0e<-EaXHJK+kAy10tp4ؖfR">X@\-`Ahz#-q\E&MNBe?ŖBcίL$K9[JP)^nH;/[%y3y LC*J2d5!&h+)t ЌЧ;s./;CH#\CwqǫHBlt|B*Tu~̬̩"Tj8EٿэcfK2*Pwm-ecYT9Ln) ( pKe:+Q1W+U lI5 E.!B& ٠aF4妁0:esf݊0 )4>'0p ,:s|7)(O~wu{̓:w9+BpXU3LyN\-uwN5q.2Q0>\:.TUpCN<# YHv(}M' fxAK' |>FTnw ϸ ئkC}`hgzk?Aw<ëmFH`IZ~PXi"A4"6OôE w(ާosw>8L"t&k1N&Fvo\ iNni1V@1؞ -"R-