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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
5 z, T6 t9 i! A3 y6 B; y8 C) _) Zto do-business 5 P' V* X& O$ a
rt random 360
% \8 S& g7 B; I  A9 [8 d fd 1
. m1 i7 a1 N9 e. ^6 M ifelse(other turtles-here != nobody)[- M) H- X- I9 {# S! O! z" i
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
, m9 k' B, r; @4 j& k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) x9 m( {0 c/ |- y, C
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 _0 |: Q: ^' |$ u
   set [trade-record-one-len] of self length [trade-record-one] of self, w9 g, J) `3 R' X0 U. f6 b
   set trade-record-current( list (timer) (random money-upper-limit))
& z* q% p( h6 ?# L( D/ u9 q3 G+ y, L8 g) f, B, M9 o
问题的提示如下:* ^3 c( F9 w% a* U
* B# I7 {( |; }% x2 Z
error while turtle 50 running OF in procedure DO-BUSINESS5 }+ g) ^: A6 g0 A9 \% q  B
  called by procedure GO0 J) _' Z/ k! e* _/ A
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ [) @5 `0 z9 m0 h3 E
(halted running of go)) s7 s! I9 p( B0 I% m" V  a- g
' ?- l" G& @" e2 z% O
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~/ L( E+ n4 ?% }3 A
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教9 ?7 u5 ~: e7 u% T
globals[2 J* ?1 y! K: o1 X2 O% _  A6 R
xmax% b# A9 l6 {9 K' @# Q# ]
ymax
, s& Q  S! @. I" M8 aglobal-reputation-list: c/ q5 ]6 D/ ?9 J, ]' J) R
. G( ?! g. W+ ]1 I; P6 P; }" K
;;
每一个turtle的全局声誉都存在此LIST8 l9 v6 W2 H5 D( R/ z* k3 J
credibility-list
! n' _+ P, |2 x6 f+ B;;
每一个turtle的评价可信度
4 s( H0 Z" I5 L3 R. P$ ?% zhonest-service
/ Y: {" F+ ]/ ^& \8 funhonest-service3 U; Y  x/ _& y7 o2 l! j1 g
oscillation
; |1 o, y% c* h4 lrand-dynamic$ |% Q( ~, n2 J6 C) W
]4 V5 a7 |- k7 T

" J* G; _1 J  y$ Sturtles-own[/ j' z5 q- A4 h8 s
trade-record-all6 Y; `% d2 t2 l, {' a
;;a list of lists,
trade-record-one组成* b* m* x; K" p- v
trade-record-one7 X* E8 Q- x& I7 Y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 u7 Y) O5 ^( I1 |7 [) ^) E3 U

5 ~/ s  A2 r4 C  x  Y2 z* O;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]7 s, G4 |7 i: n5 n6 ]
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
. @* u9 S% v% pcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list; U; D. z' u" z- O0 g! ]
neighbor-total
4 a: t) U5 u4 D7 ~! z; y. q. Q;;
记录该turtle的邻居节点的数目
7 g' t. V  y$ Htrade-time) z# V3 t5 Y& b# Y% T# e8 ?) M
;;
当前发生交易的turtle的交易时间: o% V4 C  X6 K, Z% ~3 [! ~9 j
appraise-give
- s/ E& j! S) i, i;;
当前发生交易时给出的评价
$ j3 ^4 [  N" b2 v% C, ^8 C  cappraise-receive# [; c6 q+ P+ O) @4 h2 _- D: T
;;
当前发生交易时收到的评价
' P0 a$ L0 a# x% k' \. H& b9 wappraise-time
5 S7 U: i1 |0 v6 f9 J' ?. u5 ];;
当前发生交易时的评价时间
: P4 x0 ]* H" Y/ i3 s: }local-reputation-now;;此次交易后相对于对方turtle的局部声誉( S* ~8 ^0 x9 Q# y
trade-times-total
+ R! b) j" T, c: m( i;;
与当前turtle的交易总次数: Q+ V% P1 B2 M# W( @, D! E5 u$ Q
trade-money-total
7 l% W9 ^1 q# c- M+ _( [' u; w;;
与当前turtle的交易总金额
( \' o! y" `; g0 v% Qlocal-reputation% B/ {! i# e& l' k( s
global-reputation
' l7 t' O% ~& X: [  l; n+ P! qcredibility& E+ E( q" Y8 Z  s, w' m
;;
评价可信度,每次交易后都需要更新7 S" }1 k! U& D" J. L
credibility-all
4 y( F$ z7 a% F: f! a2 ];;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
/ h7 l% P4 ]$ |4 r. y% o  W' W: [8 Y, j7 D% \; a- q+ h
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
* J2 [" D$ W! [credibility-one
3 T) D1 k) y) ^;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
( l, z2 y% t# H; Kglobal-proportion) t; c2 Z9 L" `# T7 ?9 W- j
customer
4 ?3 k. M# ^9 x0 e2 D( zcustomer-no9 m  z# p. _7 a/ J  G! ^: o
trust-ok- s* `1 S' k, B6 V- E, ~# d. u
trade-record-one-len;;trade-record-one的长度- M- E& O- w# V; S4 N" T: J( h) I
]
! h5 l1 p2 r) n
" J; J& F8 r! j! @; c;;setup procedure6 e& v& v6 r1 F7 e

$ B" V( K7 v9 s) J& p- [% s2 E2 zto setup9 i' ~2 V9 e) Y7 W# ?
7 \% _: [: e9 D) x9 k5 M/ Q# U
ca
0 |4 p. o2 g! h, G9 Y9 Y& \+ K

( W6 S$ \8 _7 _2 Cinitialize-settings

8 i' |) |3 c( J  F" |* i& |; R: G  @& U5 d% X9 m
crt people [setup-turtles]
$ F- i+ m; [' C2 ^* a% i; R6 L6 U

' t% i6 m; a, E% Z* Yreset-timer

2 m7 W( n4 V9 H4 q' D
$ X, W& F% `9 {. ypoll-class
' _6 }1 u  O- L5 m

  w: e  n- L( r) q/ }4 Q4 Y" N9 Jsetup-plots

0 D) C- G; z& D& o# i2 T2 c/ ^/ m$ U6 n& X8 k4 O- P7 g
do-plots

. M. @9 `7 l- t6 j6 F. ]7 h# iend
/ V) }  D1 d3 J0 ]- X1 O$ v
! q: M2 V3 ?6 ?9 C5 f# [  R% kto initialize-settings2 M( x2 ]0 e' H1 w4 d9 S% `
: L+ @3 ]' x' _# g  Y; k
set global-reputation-list []

0 s6 w. d8 b$ H0 g
# U7 `+ \6 _9 b+ |! n) U( X1 Tset credibility-list n-values people [0.5]
( m% v/ N) r- l7 m

3 k# H( _% ?5 b$ Y/ {set honest-service 0
/ n! I7 x8 l+ N/ ^
. U4 d. c7 F2 d6 Z/ V
set unhonest-service 0

3 s2 U  U  b1 ?3 q7 y/ ]1 ]5 @; b. q
set oscillation 0
* I0 g% i, c! h

) i$ y" |% Q/ m( Aset rand-dynamic 0

# I" K/ m# f5 I; \end) ^8 @* j- h9 I1 T! E) C
( @; @) |% ^. `- F- M$ ], P
to setup-turtles ' I1 i$ ~) H2 S& i% e1 g; ^4 U5 Y& l
set shape "person"
' w! V, \& e5 p$ p: F6 j: Z3 W& ^/ zsetxy random-xcor random-ycor
  P' ^! l3 [, X. u; Qset trade-record-one []7 f1 T1 |! n  J$ L

: q% V, v  f: r& }! @set trade-record-all n-values people [(list (? + 1) 0 0)] , g0 e3 \1 f0 C5 r! f) Z& c; Z
' y% V. n% k0 {3 A9 F$ m, \; s$ L
set trade-record-current []
; w) @) H2 y, k8 s# t# `; `) m- b4 ~# }0 [4 kset credibility-receive []
; V. s& E% r. S; Z, W/ {set local-reputation 0.5; t  z% @# u/ k4 x
set neighbor-total 0
, U* @: N$ }  q; n( o5 x- qset trade-times-total 0
/ O9 ?! u# |' Mset trade-money-total 08 s  g+ w; q) [, @: c8 F! z
set customer nobody
* M8 i" a3 ?  t( S% B  R7 R: Vset credibility-all n-values people [creat-credibility]
5 }3 Q) N  J9 i5 }: S/ hset credibility n-values people [-1]8 D  W, Y1 Y4 I, }4 h0 W- w
get-color
) I8 n# Y; G! ~0 w# `; t: U7 F

- q& I/ I% O8 C  P, v: nend
0 v) Y# v' `# ~- Y$ _' ^
9 s: X7 H  X$ D' d3 r0 mto-report creat-credibility
; `3 h2 k( N! L$ oreport n-values people [0.5]$ k3 ]+ I' A1 g) Z. [
end
8 N7 E- t" ?2 x
/ ?2 O, D6 l/ k! R" O9 Y  i2 vto setup-plots1 T4 l+ q% g% I! o, @1 A
% d% ]0 y: V" G& I- }
set xmax 30

$ z' O9 B% t- H* n$ u; M0 M- p, ?& C+ g1 k, J* ?
set ymax 1.0
* V- l, _# W- i; j8 ?
% r! T, k, o5 V$ a  \
clear-all-plots

$ A: f' Z  r  N) k& e; n3 V, b1 @1 v$ W
setup-plot1
; I$ P& [% ^  M2 g: t' T4 C! G

; r; |5 {& w$ X; Esetup-plot2

* z% b6 U. F/ @, @  l% g
3 V* r3 k, e- x4 F5 B7 n: w) Ssetup-plot3

  K  b" W. M+ j; ~! ?! I7 U* \% Kend
# x6 ]: Q: i3 |/ n1 c
( @! D( i2 W0 e; L0 a;;run time procedures
) u( ^" Z5 H- R( r/ q8 h2 b9 C, j/ r7 h% X, f: j
to go1 P, L& Q3 D- b. ]- {

1 v" q5 o2 P- g, R, r2 Y3 _) ?4 lask turtles [do-business]
) N+ ?: J/ y7 Q9 k, }. k2 m& B$ s
end
& \) s' j# k" ~; a' d2 X+ X
' D+ j" ^% W. ~' k3 b: `to do-business 8 L! ^6 x$ P  ]
" P; E- N- g7 Z3 `0 t. i# G

( v" T& [$ M7 I; {8 O( }8 Art random 360
5 d( g4 `$ U$ q% E0 ^
3 z; t$ V  I. Q6 e/ I1 r2 G0 _$ w6 b
fd 1
$ F, d) E: a# u' A3 F

+ `% v9 o* N2 r" s4 gifelse(other turtles-here != nobody)[
: B1 f$ @6 k% v4 `  z3 r  X

& m7 O7 ]( H6 }+ ^6 }! r( s- rset customer one-of other turtles-here
" A9 V6 u( k& E% Z6 q# J4 f  [5 D

3 _( a- p' \. q$ p7 m& R$ H% O;; set [customer] of customer myself
. g/ H, ~' h8 y8 y0 f6 D
* g! F1 u! T( Z! }) u) K
set [trade-record-one] of self item (([who] of customer) - 1)
9 h, R4 n' k3 @[trade-record-all]of self5 j* @0 v$ n* g, {6 J
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 j' z  o: Z! g+ t) `& a/ f- ~- f% z; h4 y: a9 W
set [trade-record-one] of customer item (([who] of self) - 1)
- J, i% U: U( c- e! \[trade-record-all]of customer
% Q1 R0 m4 X9 h8 C
$ t% A  b0 g* p
set [trade-record-one-len] of self length [trade-record-one] of self

$ b+ C6 m; I! S+ b
+ B+ [* ~! m( W9 A8 T" [  @( c% kset trade-record-current( list (timer) (random money-upper-limit))

( H' d+ D9 ?2 x1 A; l& E& z# t5 w
( B" C# I" M# xask self [do-trust]
; @7 M4 A2 \* l/ G4 {5 {% W;;
先求ij的信任度
# w- E( [  _6 ^8 F6 F6 `
1 T7 z; b4 a8 j' L6 dif ([trust-ok] of self)6 T! k6 W' a/ f  G: v& g0 E2 A
;;
根据ij的信任度来决定是否与j进行交易[' W; G4 R- t9 |/ Z3 L' |) Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 S+ y1 W) P9 u+ u5 i

' X, F6 Z! \4 {8 H- |) a  W4 g[

$ o/ `2 l0 c2 N" q7 @$ A3 B3 V1 h$ D5 N
do-trade
& h7 i+ u. W! k  l# e! d

+ U$ y! b0 k. K& F2 G3 Q4 Bupdate-credibility-ijl

. U! f* Q' t' k: u- E9 C
- a7 L( S7 k! I$ W) T/ Q  s# Hupdate-credibility-list! f0 a: N+ }4 S) V& X$ t7 p! e

" Y9 R( q/ U9 S
4 X. i( a& g4 K4 v4 e- G0 z  mupdate-global-reputation-list

* J; M6 U) u7 r. |7 H) R7 s3 A
poll-class
8 ?/ e7 x; h% a4 W; ]5 Z9 z* W7 S
( r7 t; ^0 C2 Z, \2 w) W, ~
get-color
1 H* }8 i. P% \# |+ ?8 w* O
- [% r: U8 q1 F( P$ f# q
]]
  t( c( m8 n7 F. c3 L, g7 v, @5 b4 a9 ?
;;
如果所得的信任度满足条件,则进行交易, N) e/ I* t5 a$ b5 y
7 A* T" v: d# r9 i2 f% S' M- R2 V
[

4 U: q- c/ K$ x; A; @2 c) t6 P- q
rt random 360
* M9 D4 V- o! c2 m* q

" Q+ v: b* v. a. bfd 1

) s) @' f) L$ {* a) g- n( h# A; w4 X& T6 e: ^9 O
]

- R4 ~1 V! \# d  ]1 {' e+ F
9 ]7 S: M0 m7 @6 I( ~end

& L, G+ c4 C! g7 }" m! @- `. N6 k* J: T/ S# }5 l" J
to do-trust ' v6 K# X4 E' i: f9 O8 ~4 {
set trust-ok False, [" {2 Y1 V& K  b% w7 k' S
# z% {# u9 L/ }. t3 n) a
% a5 v- I; B' C# ~/ Q
let max-trade-times 0
* r7 O" ~9 a+ R8 L4 D! X$ cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, w% K4 \* Z8 Z' Y% vlet max-trade-money 0
  y: s0 u4 L  W2 n# R+ Q( L$ N0 yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: e6 p# p4 I  k% @1 J: }3 ?let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ J; H% {. t+ A) e2 m" w% i. A1 R0 C- Z5 O5 Z% ^7 T& b$ L9 P" C

" g0 z' F* q, p0 |! q' wget-global-proportion
& [' p: g6 O  Y* }' }let trust-value
$ u/ S- ]* d$ @! v: w* T. K  Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ o0 l: K0 O7 q8 a9 h: `2 k6 eif(trust-value > trade-trust-value)
) _) ^4 A2 H5 [# l9 S( \[set trust-ok true]+ E: X: _( y  e6 D, s$ I
end# u) z' `3 g: K. J9 |, k

! _2 o( Z8 {4 U: v" x- D9 N3 ?to get-global-proportion  f! Z1 }/ ]0 M& r4 V9 T3 d+ q1 `" B
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. A0 |! r( k( z) o6 K! ^; k" ~[set global-proportion 0]
; w4 R" w+ U& y  r" t[let i 0* ^: r1 X6 k- ?( T, x  \0 X
let sum-money 0
+ V* n& X/ x9 D1 {9 o6 X( Rwhile[ i < people]! j' U5 K& F+ e$ `, m* G3 e) k
[
2 C$ ~) e. |0 @if( length (item i  T) z' J- B4 @- ?
[trade-record-all] of customer) > 3 )

% t6 N/ Z5 B  j( B[
0 |/ _$ o% F  L: I1 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 E+ m3 ~3 ^% B, N' u% x]
* [+ h  o; m4 c6 d* i]! F. k8 [; P: }2 r
let j 09 g+ ?( c0 h9 X9 D
let note 0
. q4 t. H3 L: t7 J3 f) ]: {while[ j < people]0 S% i! |: T+ c, x+ a2 x
[" U) o. F! ~* `
if( length (item i
  q/ d% D, _5 N[trade-record-all] of customer) > 3 )
3 S4 E$ s/ W% \
[" v, x8 x7 c( {( y9 m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ d) `" T( V. X8 j6 n* D[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, m* j# g; A6 ~& H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* h4 Z/ Q' Q0 Z& b) M" s. N
]
( H( ~3 [3 S5 i1 B]
3 b( `  Y+ l' Oset global-proportion note$ y# j4 L0 g8 d1 v
]
, ~% Z8 M( I+ aend
% `0 X4 y8 z3 \1 w1 \1 r. l& ~  a. p
to do-trade
& n. H  h/ Q+ m$ K/ `;;
这个过程实际上是给双方作出评价的过程
$ T8 ~" ]- N( O; W! j. D1 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- r& q. ], d5 p! m5 R9 x' x1 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# L# c+ O; B  z* V
set trade-record-current lput(timer) trade-record-current
+ `1 ]$ T  K, r! y;;
评价时间' V' a1 v/ g; }$ Y# q* Y# l
ask myself [
! G* g3 ]0 q& l+ Hupdate-local-reputation2 ?1 A) o2 I2 n$ U
set trade-record-current lput([local-reputation] of myself) trade-record-current( B3 u5 I$ ^& [) ]
]
6 \* A/ y  x# }% t9 J* aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! o0 i$ a$ c0 s# R. a;;
将此次交易的记录加入到trade-record-one% j% w2 W" i1 O6 Q4 U7 H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 p# ~* y& A8 \: B5 R2 e- rlet note (item 2 trade-record-current )
1 u" i3 W- U) u: i' Wset trade-record-current5 P: y  @, k0 j0 g3 }
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 V, O5 E: ^( @( B
set trade-record-current/ \+ O  B) z9 I  L
(replace-item 3 trade-record-current note)
! n7 ?4 R  H3 I# M% B1 i! C
1 y$ v. T7 V: m: y/ d3 R" g
+ Q  L, L5 e8 ?( n  C1 @; F/ h; n: \
ask customer [( x9 l! e: B# [( |
update-local-reputation
. u) y" _% \% F; E4 i  ]) f0 T! Gset trade-record-current, C1 R& n; W* I% T2 p# l5 Z1 h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) ~/ e- D7 ]1 u4 \- U& B% J2 q]
5 z" i( q- ]2 R- _  R) D8 M% R- k9 L  u$ u+ {; [1 i+ d. A& ]/ C
- V0 @! E8 Z& T( D. Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& g) G0 d( {, R: l0 y
+ W2 Q) T" \% c8 c: u$ s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 ?4 J) g5 Z+ N" n% n$ P9 e;;
将此次交易的记录加入到customertrade-record-all
7 w8 s1 K; g# ~end
( ^. p$ T4 U) |) U3 h  Z2 r2 T3 T" D! C! t( d" H
to update-local-reputation
) d) P) r9 v! X" Bset [trade-record-one-len] of myself length [trade-record-one] of myself' d! T9 x( X2 \7 I

  Q% Q6 i, _0 O. o2 W' G9 l; Q% g+ ]6 f. {. c
;;if [trade-record-one-len] of myself > 3
7 V' K" q2 v( ~4 w5 f
update-neighbor-total
+ C1 L+ p" I$ t# K. h  a; F;;
更新邻居节点的数目,在此进行
( o$ P# U# r- E9 B0 ]' ]! Mlet i 3
7 ~' Y& z' J: ~0 k8 j7 V0 Llet sum-time 0, \" b6 U  |% ^3 j2 q, ^1 B
while[i < [trade-record-one-len] of myself]- M/ q7 d' Y6 E. v# f$ v- B' [' }
[  X+ a7 a) S7 B3 h- H# W- ^$ w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! f" \8 O, P. J+ T$ P* y) Dset i3 X& R# d% X3 N9 q
( i + 1)
1 l+ P, O/ |7 y# d
]8 e, ^: c* I# N4 z- E% i
let j 34 p2 c$ F. o  g' l: _9 X* P
let sum-money 0
6 n% K6 d) i3 E5 c( }. `" `while[j < [trade-record-one-len] of myself]
. a8 h7 Y4 @! G0 s[
" z, ?8 o1 k9 P5 uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)# o" |- B9 B! I1 w# k; }
set j
& W$ x1 U- \8 W( j + 1)
3 t; b) B0 e) s, Y6 h5 ?
]5 x3 O* I% P; d, Y! p9 }; A
let k 3
2 x8 N9 [; }2 _- Q# I$ Mlet power 03 U6 |8 G! f- ?0 E% l2 z
let local 0; {( Q/ b- d; ^! {9 {( Z
while [k <[trade-record-one-len] of myself]6 Z7 [9 \) p/ D2 ]3 N
[: V4 S7 K- x9 |# |# i
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 1 o# r4 S0 k, ?
set k (k + 1)8 a( S- s- n9 X& U# \
]
0 j/ C0 y: k/ Y- [3 S! ^# Iset [local-reputation] of myself (local)* i1 l1 R0 ~7 W6 P5 p8 D
end5 j1 Y, e' P% G: d' b

" ^' F6 {" Z9 Nto update-neighbor-total
9 E9 W7 u8 u9 w0 d' A' S$ J$ G% k0 `8 G+ ]6 S; e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 x) u" L5 K3 O4 t( v# P+ M2 L* @, F8 j5 q
6 g% O& w; p9 ?2 X
end( D( U% z9 A- P
0 Z' C) i  Y2 U0 j0 b& q. P
to update-credibility-ijl 4 s# }% J- s( s- C

, ^4 V  \. C$ ]9 c3 Y;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
2 P) @- t" \% slet l 0: H* H- F4 F3 n# Z  [% X2 M6 j
while[ l < people ]
) E1 F! M) j8 ?7 v;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
: y- r! ]5 p- `; r7 ~[) P  y' I: c0 H" P6 j+ l0 O( _# t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" u- |  f& Z8 ?0 ]  n8 ]) aif (trade-record-one-j-l-len > 3). u% h- Z/ \3 d; n/ h. [4 r+ @2 m5 F+ ~
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
2 F+ Q  T: f5 F6 C3 N- C$ wlet i 3( T4 g" |8 e& H& X7 V. w5 ]/ e# k2 x
let sum-time 0
" d- Y* Z2 d/ V& ewhile[i < trade-record-one-len]- A( a" R* L4 R$ q' |8 u/ Q
[) z- m1 _# J& K6 X/ _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ \$ S* L$ g$ v6 \: O& Pset i7 W& a9 f7 c5 R' n! ?2 M% r
( i + 1)
. V) @, h% _; l5 E" V
]
: ?0 q3 z! O$ T8 T% vlet credibility-i-j-l 0$ v- @; o9 q6 L! L$ M, Q
;;i
评价(jjl的评价)
& @( {/ a( _. c& U- q+ rlet j 3
5 X* |4 j5 w3 |7 i4 Z7 x/ Mlet k 4
  F3 Z: S0 A  r& q4 xwhile[j < trade-record-one-len]: o2 n2 V/ p5 @
[) d6 X+ @& v' F6 }
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
. H1 Y0 {$ w+ c; S1 zset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
; a5 a: C: X: Qset j
; X. n, i$ U) j! @( j + 1)

! C) f4 e5 ~; M/ \1 o]
- u! ^4 f6 _, L+ e" K8 j9 b# Bset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))0 J9 p  X' a7 X1 N: v

; G6 q8 ?) q# c

: |; p' D$ U% N* ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; P# o* \7 K0 d! \8 R5 w;;
及时更新il的评价质量的评价
: Q% z4 k& w, Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% j6 X3 y. S/ H) Rset l (l + 1)
& p; C, K! O7 _5 @* |( v) }% }]
. X3 s  L# v! T, Send
# l  V; L3 N& s: [- i0 ^8 L: e* Q6 }1 R
to update-credibility-list
- R4 L% d* R3 e1 J+ C; `, Wlet i 0( U* z: M5 r5 m+ i4 z' P
while[i < people]: m; l$ E8 r$ B  D1 n
[4 P9 L$ {( k0 n  a! T4 ?8 Y
let j 0, o4 F, \% J# B3 `5 H
let note 0
8 ~$ E3 b  u0 ~0 }, L& _  Xlet k 02 L4 w9 Y. w5 \0 ]: u1 d
;;
计作出过评价的邻居节点的数目
( ^2 h8 X2 N. |. y5 uwhile[j < people]
2 T: ^4 n  d  A* V" I[5 J! j. _  _" A7 c! Y. m, N
if (item j( [credibility] of turtle (i + 1)) != -1)
* z( A7 @1 a. ^3 \' u; F4 s  ~;;
判断是否给本turtle的评价质量做出过评价的节点9 G# V9 d9 Q# |( k* E4 f6 M
[set note (note + item j ([credibility]of turtle (i + 1)))& H; X, v$ z2 a- t4 @1 Z: j
;;*(exp (-(people - 2)))/(people - 2))]
' @- q1 u: U' b* \8 s# W% M
set k (k + 1)0 s$ {/ i- r& D+ e7 [+ T+ W
]
! C# K1 w: P3 r: B* R5 b, Tset j (j + 1)
: M$ M6 V) ^! ^/ D]
8 \3 E/ v+ Z+ P  Oset note (note *(exp (- (1 / k)))/ k)- X6 w# o5 j' \' J
set credibility-list (replace-item i credibility-list note)5 ~' W9 h# I! L/ _4 f
set i (i + 1)! u4 B6 k. J, I2 o5 t
]
: Y: v( P$ g) X, \end
2 [; }# I1 L3 \6 i2 J* `
5 `6 n8 G0 u; @7 n. T4 K! vto update-global-reputation-list% f1 x3 G+ d8 N. c! B
let j 0
. b% D6 a4 i# y- h9 u$ Ewhile[j < people]
+ C" U1 J$ n2 D[- @. W" C9 |) T, N( a
let new 0! j- `# L& y# r$ K. p
;;
暂存新的一个全局声誉
, {" A; K- J7 Flet i 08 l. c% U/ u0 D8 ?! j' j' C
let sum-money 0
8 \! R8 D- K7 _* R" k+ l' mlet credibility-money 09 `6 o7 r8 b/ g$ ~7 t2 U
while [i < people]
& j# y* N7 ]  H4 B9 w2 ]3 ?: q[8 v, B% f0 J* b. V5 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 s( a% q/ r& c. l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 ?1 Q3 r+ s0 `* R+ F
set i (i + 1)
6 }3 C0 w/ F7 d: f( q' M]6 g9 U7 v5 B8 N2 H6 u- |* B3 T; O
let k 0
: i7 Y' J$ X3 j! q+ r  llet new1 0
7 j) ]% q$ l0 nwhile [k < people]
7 A9 v  S( K* G( a1 c/ c  o; Y4 Z/ z# {[
- N- ?) Z* \; k* M' tset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)7 K# w, Q$ d& P# b7 N
set k (k + 1)0 P7 A" t- d4 e; m& O
]9 x8 C5 v) O3 `' }/ ?
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' ]  Y2 O, C0 }" M2 y9 l( }- z4 L* hset global-reputation-list (replace-item j global-reputation-list new)3 z6 q* a& a, D; r* `1 D
set j (j + 1)# I  v" M4 |; B& s  d" _* Q
]
  Z5 ^7 i& M6 s( jend
7 Z# {8 ?* v, U9 p1 ?2 u: j. I$ H# T3 n

: c8 Z! o& E$ ]* U/ `
( T# [* p1 w. n1 mto get-color9 o, i& F5 t# }; Y2 t) I

! C: ]3 g+ A% e0 F3 @7 gset color blue
4 \: q9 ?) g! [& U/ x; S$ f- ^
end3 t) \" X5 W  v. d' t' ^7 C

2 y" L) |$ t- g5 }1 @/ {' {to poll-class
8 n" \" d# |- w. y1 c- Gend+ b1 ^% u, b0 V! O

/ p' X+ \, N- _+ Rto setup-plot1
* `. |" _4 c9 I) T; D+ k. M) R4 p/ m: ~# n  K
set-current-plot "Trends-of-Local-reputation"

& d# c' ~3 k1 j: _) Q" W, ]; M
' Y9 p  c. i* S9 z# j1 }set-plot-x-range 0 xmax

! P7 f0 ?( C1 d- w8 d# D
9 C/ _: `- y# [% f$ u. Yset-plot-y-range 0.0 ymax
6 G. j: H. X+ }7 V( D3 A; {
end3 v: K% V" Z1 G, l1 X

5 Z' y* Z% I, A5 T7 R+ I/ S9 Jto setup-plot2, I$ g5 {1 a6 U# [/ a( G$ C
7 [$ x9 \1 N( ?  Z
set-current-plot "Trends-of-global-reputation"
& `; M& V. i, _

2 e& o) L& p2 Zset-plot-x-range 0 xmax

5 Z1 G6 Q9 P' e" ?0 u
. t! S1 J4 ~4 U1 _, d( q7 s; g+ aset-plot-y-range 0.0 ymax

; ^7 n: y. |' ~( t/ X. k7 B* uend- I$ C4 O6 m$ j6 ]+ j

$ e1 h" b; t5 ]5 V1 n6 ]to setup-plot38 p+ @1 |. O! t

( u7 S& d! W  k2 E. O6 nset-current-plot "Trends-of-credibility"

1 W9 p0 |* m4 Z% _$ ?! u0 l; v& C5 `% s  E! N
set-plot-x-range 0 xmax

$ N6 f3 j- i2 K9 J; Y2 r' k6 m7 H- X- {, l6 G
set-plot-y-range 0.0 ymax

/ V' d4 Q) e( X- H3 hend, Y" f2 z% g: w
/ A8 o2 M8 z9 H
to do-plots
# o2 t% Z1 Z4 N5 n/ L, G  }set-current-plot "Trends-of-Local-reputation"
2 Q3 [5 J; n  M2 G% vset-current-plot-pen "Honest service"
1 z8 Q4 b+ K  eend+ s3 l  L: T, \/ h; r  B

3 ?/ b9 k% ~9 G: Q  o% r3 W6 F) x[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
* v. Y' t9 o6 Z: b( X' f1 u) k! L
1 U* H( x' X2 v. D0 S, V3 f这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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