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this is a journal for mathematics in real life
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<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/622bb2b83d2fbb0007225b5d/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622bb2b83d2fbb0007225b5d/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">413 </div><div class="t m0 x2 h3 y2 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h4 y3 ff3 fs2 fc0 sc0 ls0 ws0">AVERAGE-<span class="ls1">BASED</span> <span class="_ _0"></span>FUZZY TIME SER<span class="_ _0"></span>IES <span class="ff4">UN<span class="_ _0"></span>TUK PERAMA<span class="_ _0"></span>LAN <span class="ff3">KURS </span></span></div><div class="t m0 x4 h4 y4 ff4 fs2 fc0 sc0 ls0 ws0">VALUTA A<span class="_ _0"></span>SING </div><div class="t m0 x5 h4 y5 ff4 fs2 fc0 sc0 ls0 ws0">(Studi Kasus Pada <span class="_ _0"></span>Nilai Tuk<span class="_ _0"></span>ar USD-IDR dan EUR-U<span class="_ _0"></span>SD) </div><div class="t m0 x6 h5 y6 ff4 fs1 fc0 sc0 ls0 ws0">Komet Rachmawan<span class="_ _0"></span>sah </div><div class="t m0 x7 h3 y7 ff5 fs1 fc0 sc0 ls0 ws0">Jurusan Matema<span class="_ _0"></span>tika, F.MIPA<span class="_ _0"></span>, Universitas Brawi<span class="_ _0"></span>jaya <span class="ff2"> </span></div><div class="t m0 x8 h3 y8 ff5 fs1 fc0 sc0 ls0 ws0">Email:<span class="fc1">rachmawansah@<span class="_ _0"></span>gmail.com<span class="_ _0"></span><span class="ff2 fc0"> </span></span></div><div class="t m0 x9 h6 y9 ff4 fs3 fc0 sc0 ls0 ws0">Abstrak. <span class="ff2">B<span class="_ _1"></span>erbagai jenis <span class="_ _1"></span>model peramalan <span class="_ _1"></span>telah banyak dikembangkan <span class="_ _1"></span>untuk meningkatkan akurasi <span class="_ _1"></span>peramalan, salah satu<span class="_ _1"></span>nya </span></div><div class="t m0 x9 h7 ya ff2 fs3 fc0 sc0 ls0 ws0">adalah <span class="_ _2"> </span>metode <span class="_ _2"> </span><span class="ff5">fuzzy <span class="_ _2"> </span>time <span class="_ _2"> </span>series.</span> <span class="_ _3"></span>Pada <span class="_ _2"> </span>penelitian <span class="_ _2"> </span>ini <span class="_ _3"> </span>dikemukakan <span class="_ _2"> </span>tentang <span class="_ _2"> </span>metode <span class="_ _2"> </span><span class="ff5">average-based <span class="_ _2"> </span>fuzzy <span class="_ _2"> </span>time <span class="_ _3"> </span>series <span class="_ _2"> </span></span>yang </div><div class="t m0 x9 h7 yb ff2 fs3 fc0 sc0 ls0 ws0">mampu <span class="_ _4"></span>menentukan <span class="_ _1"></span>panjang <span class="_ _4"></span>interval <span class="_ _4"></span>efektif, <span class="_ _1"></span>sehin<span class="_ _1"></span>gga <span class="_ _1"></span>mampu <span class="_ _4"></span>memberikan <span class="_ _4"></span>h<span class="_ _1"></span>asil <span class="_ _1"></span>ramalan <span class="_ _4"></span>dengan <span class="_ _4"></span>tingkat <span class="_ _1"></span>akurasi <span class="_ _4"></span>yang <span class="_ _4"></span>baik. </div><div class="t m0 x9 h7 yc ff2 fs3 fc0 sc0 ls0 ws0">Metode <span class="_ _3"></span><span class="ff5">average-based <span class="_ _3"></span>f<span class="_ _0"></span>uzzy <span class="_ _5"></span>time <span class="_ _5"></span>series <span class="_ _5"></span><span class="ff2">in<span class="_ _1"></span>i <span class="_ _5"></span>diterapkan <span class="_ _5"></span>untuk <span class="_ _3"></span>peramalan <span class="_ _5"></span>nilai <span class="_ _5"></span>tukar <span class="_ _5"></span>mata <span class="_ _5"></span>uang <span class="_ _3"> </span>yaitu <span class="_ _5"></span>USD<span class="_ _1"></span>-IDR <span class="_ _5"></span>d<span class="_ _1"></span>an <span class="_ _5"></span>EUR-</span></span></div><div class="t m0 x9 h7 yd ff2 fs3 fc0 sc0 ls0 ws0">USD. <span class="_ _1"></span>Hasil <span class="_ _1"></span>ramalan <span class="_ _1"></span>yang <span class="_ _1"></span>diperoleh <span class="_ _1"></span>kemudian <span class="_ _1"></span>akan <span class="_ _1"></span>dib<span class="_ _1"></span>andingkan d<span class="_ _1"></span>engan <span class="_ _1"></span>me<span class="_ _0"></span>tode <span class="_ _1"></span>ARIM<span class="_ _1"></span>A<span class="ls2">. <span class="_ _1"></span></span>Hasil <span class="_ _1"></span>dari <span class="_ _1"></span>skripsi <span class="_ _1"></span>in<span class="_ _1"></span>i, d<span class="_ _1"></span>iharapkan </div><div class="t m0 x9 h7 ye ff2 fs3 fc0 sc0 ls0 ws0">bisa <span class="_ _5"></span>berm<span class="_ _0"></span>anfaat <span class="_ _5"></span>untuk <span class="_ _5"></span>m<span class="_ _0"></span>emperkenalka<span class="_ _0"></span>n <span class="_ _5"></span>m<span class="_ _0"></span>etode <span class="_ _5"></span><span class="ff5">average-based <span class="_ _5"></span>fuzzy</span> <span class="_ _6"></span><span class="ff5">time <span class="_ _6"></span>series</span> <span class="_ _6"></span>dalam <span class="_ _6"></span>menyelesaikan <span class="_ _6"></span>masalah <span class="_ _5"></span>peramalan. </div><div class="t m0 x9 h7 yf ff2 fs3 fc0 sc0 ls0 ws0">Berdasarkan <span class="_ _6"></span><span class="ff5">MSE</span> <span class="_ _6"></span>(<span class="ff5">Mean <span class="_ _5"></span>Square <span class="_ _6"></span>Erro<span class="_ _1"></span>r</span>) <span class="_ _6"></span>dan <span class="_ _5"></span><span class="ff5">MAPE</span> <span class="_ _6"></span>(<span class="ff5">Mean <span class="_ _6"></span>Ab<span class="_ _1"></span>solute <span class="_ _4"></span>Percentag<span class="_ _1"></span>e <span class="_ _6"></span>Error), <span class="_ _6"></span></span>untuk <span class="_ _5"></span>USD-IDR <span class="_ _6"></span>metode <span class="_ _6"></span><span class="ff5">a<span class="_ _1"></span>verage-</span></div><div class="t m0 x9 h7 y10 ff5 fs3 fc0 sc0 ls0 ws0">based <span class="_ _1"></span>fuzzy <span class="_ _1"></span>time <span class="_ _1"></span>series<span class="ff2"> <span class="_ _1"></span>memiliki tin<span class="_ _1"></span>gka<span class="_ _0"></span>t <span class="_ _1"></span>akurasi <span class="_ _1"></span>yang <span class="_ _1"></span>lebih <span class="_ _1"></span>baik <span class="_ _1"></span>dibandingka<span class="_ _0"></span>n <span class="_ _1"></span>model <span class="_ _1"></span>ARIMA(0,1,1), <span class="_ _1"></span>tetapi untu<span class="_ _1"></span>k peramalan </span></div><div class="t m0 x9 h7 y11 ff2 fs3 fc0 sc0 ls0 ws0">EUR-USD <span class="_ _4"></span>model <span class="_ _4"></span>ARIMA(0,2,1<span class="_ _1"></span>) <span class="_ _1"></span>me<span class="_ _1"></span>milik<span class="_ _0"></span>i<span class="ff5"> <span class="_ _6"></span></span>tingkat <span class="_ _4"></span>akurasi <span class="_ _6"></span>lebih <span class="_ _6"></span>baik <span class="_ _4"></span>dibandingkan <span class="_ _4"></span>metode <span class="_ _6"></span><span class="ff5">a<span class="_ _1"></span>verage-based</span> <span class="_ _4"></span><span class="ff5">fu<span class="_ _1"></span>zzy <span class="_ _4"></span>time <span class="_ _4"></span>series </span></div><div class="t m0 x9 h7 y12 ff2 fs3 fc0 sc0 ls0 ws0">akan <span class="_ _1"></span>tetapi <span class="_ _4"></span>nilai <span class="_ _4"></span><span class="ff5">error</span> <span class="_ _1"></span>yang <span class="_ _1"></span>dihasilkan <span class="_ _4"></span>dari <span class="_ _4"></span>kedua <span class="_ _1"></span>metode <span class="_ _1"></span>cenderung <span class="_ _4"></span>kecil. <span class="_ _4"></span>Sehingga <span class="_ _1"></span>dapat <span class="_ _4"></span>disimpulkan <span class="_ _1"></span>kedua <span class="_ _4"></span>metode <span class="_ _1"></span>layak </div><div class="t m0 x9 h7 y13 ff2 fs3 fc0 sc0 ls0 ws0">dan baik digunakan untuk peram<span class="_ _0"></span>alan data <span class="_ _1"></span><span class="ff5">time series </span>khususnya pada data <span class="ff5">kurs</span> valuta asing. </div><div class="t m0 x2 h7 y14 ff5 fs3 fc0 sc0 ls0 ws0">Kata Kunci : average-based,<span class="ls2"> </span>fuzzy time series<span class="ff2 ls2">, <span class="ls0">ARIMA </span></span> </div><div class="t m0 x2 h5 y15 ff4 fs1 fc0 sc0 ls0 ws0">1<span class="_ _1"></span>.<span class="_ _1"></span> <span class="_ _1"></span>P<span class="_ _4"></span>E<span class="_ _4"></span>N<span class="_ _1"></span>D<span class="_ _1"></span>A<span class="_ _1"></span>H<span class="_ _4"></span>U<span class="_ _1"></span>L<span class="_ _1"></span>U<span class="_ _4"></span>A<span class="_ _1"></span>N<span class="_ _1"></span><span class="ff2 fs3"> </span></div><div class="t m0 xa h3 y16 ff2 fs1 fc0 sc0 ls0 ws0">Ketersediaan <span class="_ _2"> </span>informasi <span class="_ _7"> </span>masa <span class="_ _2"> </span>lalu <span class="_ _7"> </span>tidak <span class="_ _7"> </span>hanya <span class="_ _2"> </span>se<span class="_ _1"></span>batas <span class="_ _2"> </span>dokumentasi <span class="_ _2"> </span>dari <span class="_ _7"> </span>kejadian <span class="_ _7"> </span>yang <span class="_ _2"> </span>tel<span class="_ _1"></span>ah </div><div class="t m0 x2 h3 y17 ff2 fs1 fc0 sc0 ls0 ws0">dilakukan. <span class="_ _2"> </span>Lebih <span class="_ _8"> </span>dari <span class="_ _7"> </span>itu, <span class="_ _7"> </span>infor<span class="_ _1"></span>m<span class="_ _0"></span>asi <span class="_ _7"> </span>tersebut <span class="_ _7"> </span>dapat <span class="_ _7"> </span>digunakan <span class="_ _7"> </span>sebagai <span class="_ _7"> </span>acuan <span class="_ _7"> </span>dal<span class="_ _1"></span>am <span class="_ _7"> </span>merencanak<span class="_ _0"></span>an </div><div class="t m0 x2 h3 y18 ff2 fs1 fc0 sc0 ls0 ws0">aktivitas <span class="_ _9"> </span>ke <span class="_ _9"> </span>depannya. <span class="_ _a"> </span>Salah <span class="_ _9"> </span>satu <span class="_ _9"> </span>metode <span class="_ _a"> </span>yang <span class="_ _9"> </span>dapat <span class="_ _9"> </span>digunakan <span class="_ _9"> </span>unt<span class="_ _1"></span>uk<span class="_ _0"></span> <span class="_ _9"> </span>menghitung <span class="_ _a"> </span>atau </div><div class="t m0 x2 h3 y19 ff2 fs1 fc0 sc0 ls0 ws0">memperk<span class="_ _0"></span>irakan <span class="_ _3"></span>beberapa <span class="_ _3"></span>kej<span class="_ _1"></span>adian <span class="_ _3"></span>atau <span class="_ _3"></span>kondisi <span class="_ _3"></span>yang <span class="_ _3"></span>akan <span class="_ _3"></span>datang <span class="_ _3"></span>ber<span class="_ _1"></span>dasarkan <span class="_ _5"></span>inf<span class="_ _1"></span>orm<span class="_ _0"></span>asi <span class="_ _3"></span>nilai <span class="_ _2"></span>masa<span class="_ _0"></span> </div><div class="t m0 x2 h3 y1a ff2 fs1 fc0 sc0 ls0 ws0">lalu <span class="_ _4"></span>dari <span class="_ _4"></span>suatu <span class="_ _6"></span>variabel <span class="_ _4"></span>dinam<span class="_ _0"></span>akan <span class="_ _4"></span>dengan <span class="_ _6"></span>metode <span class="_ _4"></span>peramalan. <span class="_ _1"></span>Untuk <span class="_ _4"></span>mendapatkan <span class="_ _4"></span>nilai <span class="_ _4"></span>dari <span class="_ _4"></span>ramalan </div><div class="t m0 x2 h3 y1b ff2 fs1 fc0 sc0 ls0 ws0">mendatang dapat m<span class="_ _0"></span>engg<span class="_ _0"></span>unakan nilai masa lalu dari v<span class="_ _0"></span>ariabel te<span class="_ _0"></span>rsebut yang m<span class="_ _0"></span>erupakan data <span class="ff5">time series</span>.<span class="_ _0"></span> </div><div class="t m0 xa h3 y1c ff2 fs1 fc0 sc0 ls0 ws0">Berbagai pendekatan telah dikem<span class="_ _0"></span>bangkan dalam bidang peramalan, <span class="_ _1"></span>namun berbagai pendekatan<span class="_ _0"></span> </div><div class="t m0 x2 h3 y1d ff2 fs1 fc0 sc0 ls0 ws0">tersebut <span class="_ _b"> </span>tidak <span class="_ _b"> </span>dapat <span class="_ _b"> </span>menang<span class="_ _0"></span>ani <span class="_ _b"> </span>masalah <span class="_ _b"> </span>peramalan<span class="_ _0"></span> <span class="_ _b"> </span>dimana <span class="_ _b"> </span>nilai<span class="_ _1"></span>-nilai <span class="_ _b"> </span><span class="ff5">time <span class="_ _b"> </span>series</span> <span class="_ _b"> </span>berupa <span class="_ _b"> </span>istilah </div><div class="t m0 x2 h3 y1e ff2 fs1 fc0 sc0 ls0 ws0">linguistik <span class="_ _5"></span>yang <span class="_ _3"></span>diwakili <span class="_ _3"></span>oleh <span class="_ _3"></span><span class="ff5">fuzzy <span class="_ _3"></span>set</span>, <span class="_ _3"></span>sehingga <span class="_ _5"></span>diusulkan <span class="_ _3"></span>sebuah <span class="_ _3"></span>konsep <span class="_ _5"></span>yang <span class="_ _3"></span>bernama <span class="_ _2"></span><span class="ff5">fuzzy <span class="_ _3"></span>time </span></div><div class="t m0 x2 h3 y1f ff5 fs1 fc0 sc0 ls0 ws0">series <span class="_ _5"></span><span class="ff2">oleh <span class="_ _5"></span>Song <span class="_ _5"></span>dan <span class="_ _5"></span>Chissom <span class="_ _6"></span>(1993) <span class="_ _3"></span>untuk <span class="_ _5"></span>meny<span class="_ _0"></span>elesaikan <span class="_ _5"></span>masalah <span class="_ _5"></span>peramalan <span class="_ _6"></span>apabila <span class="_ _5"></span>data <span class="_ _5"></span>historis </span></div><div class="t m0 x2 h3 y20 ff2 fs1 fc0 sc0 ls0 ws0">adalah <span class="_ _7"> </span>nilai-<span class="_ _0"></span>nilai <span class="_ _7"> </span>linguistik<span class="_ _0"></span>. <span class="_ _7"> </span>Misalnya, <span class="_ _2"> </span>dalam <span class="_ _7"> </span>masalah <span class="_ _2"> </span>per<span class="_ _1"></span>amalan, <span class="_ _2"> </span>data <span class="_ _7"> </span>hi<span class="_ _1"></span>storis<span class="_ _0"></span> <span class="_ _7"> </span>tidak <span class="_ _7"> </span>dalam<span class="_ _0"></span> <span class="_ _7"> </span>bentuk </div><div class="t m0 x2 h3 y21 ff2 fs1 fc0 sc0 ls0 ws0">angka <span class="_ _5"></span><span class="ff5">real</span>, <span class="_ _3"></span>namun <span class="_ _3"></span>berupa <span class="_ _3"></span>data <span class="_ _3"></span>linguistik. <span class="_ _5"></span>Dalam <span class="_ _3"></span>hal <span class="_ _3"></span>ini, <span class="_ _3"></span>tidak <span class="_ _3"></span>ada <span class="_ _3"></span>model <span class="_ _3"></span><span class="ff5">time <span class="_ _3"></span>series <span class="_ _3"></span></span>konvensional </div><div class="t m0 x2 h3 y22 ff2 fs1 fc0 sc0 ls0 ws0">yang dapat diterapk<span class="_ _0"></span>an, aka<span class="_ _0"></span>n tetapi m<span class="_ _0"></span>odel <span class="ff5">fuzzy time series </span>dapat d<span class="_ _0"></span>iterapkan deng<span class="_ _0"></span>an lebih tepat. </div><div class="t m0 x2 h5 y23 ff4 fs1 fc0 sc0 ls3 ws0">2. <span class="ls0">T<span class="_ _1"></span>IN<span class="_ _1"></span>J<span class="_ _1"></span>A<span class="_ _1"></span>U<span class="_ _1"></span>A<span class="_ _1"></span>N <span class="_ _1"></span>P<span class="_ _1"></span>U<span class="_ _1"></span>ST<span class="_ _1"></span>A<span class="_ _1"></span>KA<span class="_ _4"></span> </span></div><div class="t m0 xa h3 y24 ff5 fs1 fc0 sc0 ls0 ws0">Fuzzy <span class="_ _b"> </span>t<span class="_ _1"></span>ime <span class="_ _b"> </span>seri<span class="ls4">es <span class="_ _b"> </span></span><span class="ff2">adalah <span class="_ _c"> </span>sebuah <span class="_ _b"> </span>konsep <span class="_ _c"> </span>yang <span class="_ _b"> </span>diusulkan <span class="_ _c"> </span>o<span class="_ _0"></span>leh <span class="_ _b"> </span>Song <span class="_ _c"> </span>dan <span class="_ _c"> </span>Chiss<span class="_ _0"></span>om <span class="_ _b"> </span>(1993) </span></div><div class="t m0 x2 h3 y25 ff2 fs1 fc0 sc0 ls0 ws0">berdasarkan <span class="_ _2"> </span>teori <span class="_ _7"> </span><span class="ff5">fuzzy <span class="_ _2"> </span>set <span class="_ _7"> </span></span>dan <span class="_ _2"> </span>konsep <span class="_ _7"> </span>variabel <span class="_ _2"> </span>linguistik <span class="_ _2"> </span>dan <span class="_ _7"> </span>aplikasinya <span class="_ _2"> </span>oleh <span class="_ _7"> </span>Zadeh. <span class="_ _7"> </span><span class="ff5">Fuzzy <span class="_ _2"> </span>time </span></div><div class="t m0 x2 h3 y26 ff5 fs1 fc0 sc0 ls0 ws0">series <span class="_ _6"></span><span class="ff2">digunakan <span class="_ _6"></span>untuk <span class="_ _6"></span>menyelesaikan <span class="_ _6"></span>masalah <span class="_ _6"></span>peram<span class="_ _0"></span>alan <span class="_ _5"></span>yang <span class="_ _6"></span>mana <span class="_ _6"></span>data <span class="_ _5"></span>historis <span class="_ _6"></span>adalah <span class="_ _6"></span>nila<span class="_ _1"></span>i-nilai </span></div><div class="t m0 x2 h3 y27 ff2 fs1 fc0 sc0 ls0 ws0">linguistik. <span class="_ _6"></span>Mi<span class="_ _1"></span>salnya, <span class="_ _6"></span>dalam <span class="_ _5"></span>masalah <span class="_ _5"></span>peramalan, <span class="_ _5"></span>data <span class="_ _5"></span>historis <span class="_ _5"></span>tidak <span class="_ _5"></span>dalam <span class="_ _5"></span>bentuk <span class="_ _5"></span>angka <span class="_ _5"></span>real, <span class="_ _3"></span>nam<span class="_ _0"></span>un </div><div class="t m0 x2 h3 y28 ff2 fs1 fc0 sc0 ls0 ws0">berupa data linguistik. Dalam hal ini, t<span class="_ _1"></span>idak ada model time series konvensional yang dapat diterapkan, </div><div class="t m0 x2 h3 y29 ff2 fs1 fc0 sc0 ls0 ws0">akan tetapi model <span class="_ _0"></span><span class="ff5">fuzzy time ser<span class="_ _0"></span>ies <span class="ff2">dapat diterapk<span class="_ _0"></span>an dengan lebih t<span class="_ _0"></span>epat. </span></span></div><div class="t m0 xa h3 y2a ff2 fs1 fc0 sc0 ls0 ws0">Dalam <span class="_ _1"></span>perhitungan <span class="_ _4"></span>peramalan <span class="_ _1"></span>dengan <span class="_ _4"></span>mengg<span class="_ _0"></span>unakan <span class="_ _4"></span><span class="ff5">fuzzy <span class="_ _4"></span>time <span class="_ _4"></span>series</span> <span class="_ _4"></span>standar, <span class="_ _1"></span>panjang <span class="_ _1"></span>i<span class="_ _1"></span>nterval </div><div class="t m0 x2 h3 y2b ff2 fs1 fc0 sc0 ls0 ws0">telah <span class="_ _d"> </span>ditentuk<span class="_ _0"></span>an <span class="_ _d"> </span>di <span class="_ _d"> </span>awa<span class="_ _0"></span>l <span class="_ _d"> </span>proses <span class="_ _d"> </span>per<span class="_ _0"></span>hitungan. <span class="_ _d"> </span>Sedang<span class="_ _0"></span>kan <span class="_ _d"> </span>penentuan <span class="_ _e"> </span>panjang<span class="_ _0"></span> <span class="_ _e"> </span>i<span class="_ _1"></span>nterval <span class="_ _e"> </span>sangat </div><div class="t m0 x2 h3 y2c ff2 fs1 fc0 sc0 ls0 ws0">terpengaruh <span class="_ _f"> </span>dalam <span class="_ _f"> </span>pem<span class="_ _0"></span>bentukan <span class="_ _f"> </span><span class="ff5">fuzzy <span class="_ _f"> </span>relationship</span> <span class="_ _f"> </span>yang <span class="_ _f"> </span>tentunya <span class="_ _f"> </span>akan <span class="_ _f"> </span>m<span class="_ _0"></span>emberikan <span class="_ _f"> </span>dampak </div><div class="t m0 x2 h3 y2d ff2 fs1 fc0 sc0 ls0 ws0">perbedaan <span class="_ _3"></span>hasil <span class="_ _2"> </span>perhitungan <span class="_ _3"></span>peramalan. <span class="_ _3"></span> <span class="_ _2"> </span>Oleh <span class="_ _2"></span>karena <span class="_ _3"></span>itu, <span class="_ _2"> </span>pembentukan <span class="_ _2"></span><span class="ff5">fuzzy <span class="_ _2"></span>relationship</span> <span class="_ _3"></span>haruslah </div><div class="t m0 x2 h3 y2e ff2 fs1 fc0 sc0 ls0 ws0">tepat dan hal ini m<span class="_ _0"></span>engharus<span class="_ _0"></span>kan penentuan p<span class="_ _0"></span>anjang interv<span class="_ _0"></span>al yang sesuai. </div><div class="t m0 x2 h5 y2f ff4 fs1 fc0 sc0 ls0 ws0">2.1 <span class="ff3">Fuzzy Time Se<span class="_ _0"></span>ries<span class="ff4"> </span></span></div><div class="t m0 xa h3 y30 ff2 fs1 fc0 sc0 ls0 ws0">Perbedaan <span class="_ _5"></span>utama <span class="_ _3"></span>antara <span class="_ _2"></span><span class="ff5">fuzzy <span class="_ _3"></span>time <span class="_ _3"></span>series</span> <span class="_ _3"></span>dan <span class="_ _3"></span>konvensional <span class="_ _3"></span><span class="ff5">time <span class="_ _3"></span>series <span class="_ _3"></span></span>yaitu <span class="_ _3"></span>pada <span class="_ _3"></span>nilai <span class="_ _3"></span>yang </div><div class="t m0 x2 h3 y31 ff2 fs1 fc0 sc0 ls0 ws0">digunakan <span class="_ _c"> </span>dalam <span class="_ _c"> </span>peramalan, <span class="_ _c"> </span>yang <span class="_ _c"> </span>merupakan <span class="_ _c"> </span>hi<span class="_ _1"></span>mpunan <span class="_ _c"> </span><span class="ff5">fuzzy</span> <span class="_ _10"> </span>dari <span class="_ _c"> </span>bilangan-bilang<span class="_ _0"></span>an <span class="_ _c"> </span>real<span class="_ _1"></span> <span class="_ _c"> </span>atas </div><div class="t m0 x2 h3 y32 ff2 fs1 fc0 sc0 ls0 ws0">himpunan <span class="_ _7"> </span>semesta <span class="_ _8"> </span>yang<span class="_ _0"></span> <span class="_ _7"> </span>dit<span class="_ _1"></span>entuk<span class="_ _0"></span>an. <span class="_ _7"> </span>Himpunan <span class="_ _8"> </span><span class="ff5">fuzzy</span> <span class="_ _7"> </span>dapat <span class="_ _8"> </span>diartikan <span class="_ _7"> </span>sebagai <span class="_ _7"> </span>suatu <span class="_ _8"> </span>kelas <span class="_ _7"> </span>bilangan </div><div class="t m0 x2 h3 y33 ff2 fs1 fc0 sc0 ls0 ws0">dengan <span class="_ _3"></span>batasan <span class="_ _2"></span>yang <span class="_ _3"></span>samar. <span class="_ _3"></span> <span class="_ _2"> </span> <span class="_ _2"></span>Jika <span class="_ _3"></span>U<span class="_ _1"></span> <span class="_ _3"></span>adalah <span class="_ _2"></span>himpunan <span class="_ _3"></span>semesta, <span class="_ _3"></span>U <span class="_ _2"></span>= <span class="_ _2"></span>{u</div><div class="t m0 xb h8 y34 ff2 fs4 fc0 sc0 ls0 ws0">1</div><div class="t m0 xc h3 y33 ff2 fs1 fc0 sc0 ls0 ws0">, <span class="_ _2"></span>u</div><div class="t m0 xd h8 y34 ff2 fs4 fc0 sc0 ls0 ws0">2</div><div class="t m0 xe h3 y33 ff2 fs1 fc0 sc0 ls0 ws0">, <span class="_ _2"></span>... <span class="_ _3"></span>, <span class="_ _2"></span>u</div><div class="t m0 xf h8 y34 ff2 fs4 fc0 sc0 ls0 ws0">n</div><div class="t m0 x10 h3 y33 ff2 fs1 fc0 sc0 ls0 ws0">}, <span class="_ _3"></span>maka <span class="_ _2"></span>suatu </div><div class="t m0 x2 h3 y35 ff2 fs1 fc0 sc0 ls0 ws0">himpunan <span class="ff5">fuzzy</span> A</div><div class="t m0 x11 h8 y36 ff2 fs4 fc0 sc0 ls0 ws0">i</div><div class="t m0 x12 h3 y35 ff2 fs1 fc0 sc0 ls0 ws0"> dari U didefinisik<span class="_ _0"></span>an sebagai </div></div><div class="pi" data-data='{"ctm":[1.611562,0.000000,0.000000,1.611562,0.000000,0.000000]}'></div></div> </body> </html>
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