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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:3 M0 y* Z* z: G$ N
to do-business 8 P  o" D: I8 S( }  r/ _, ~. h
rt random 3608 E  D6 x) Z% `2 M. Y  W  u
fd 1
( T9 y7 C1 q% k8 F$ V  v ifelse(other turtles-here != nobody)[
7 j6 @! ^/ n6 ^2 Y   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.
2 f" D8 _9 O( t3 V0 E2 K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # m; U9 k0 g4 i# a: F2 u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 {2 @2 a5 a$ s) J$ m6 T3 N
   set [trade-record-one-len] of self length [trade-record-one] of self* e& b, U4 ~  @6 K3 m  W
   set trade-record-current( list (timer) (random money-upper-limit))
3 [1 I+ W$ i% C5 ]5 T; Y* @6 H; T$ R5 }4 `& _. T( C
问题的提示如下:
$ c  h; P9 z. d. d$ H
8 a9 M0 Z# M4 {; {0 rerror while turtle 50 running OF in procedure DO-BUSINESS
' t2 X$ o% q6 {! F  called by procedure GO& M! G" O! W9 u9 u+ v. t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ D, }9 A8 {8 S( s2 g8 J: {# l  q( E
(halted running of go)
, S' Y7 J3 `+ ]; }5 G) c" x" b+ p" |/ j0 L
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~~
2 r0 }( k. E3 @/ q3 h, z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- j+ n/ e& r3 E4 B9 S7 p4 A  r! w
globals[
6 @1 Y- m1 A% u9 C7 n: v& ~& ]xmax
0 ~5 t/ y8 @. p  Vymax$ N3 k) b0 v' U" f( b" h
global-reputation-list  ]2 N6 i/ h* ^& A3 \, I

+ v0 g0 P3 W5 H+ L! D;;
每一个turtle的全局声誉都存在此LIST6 X: y) c( I  J4 f
credibility-list3 s3 X+ O/ ?& M9 `: P
;;
每一个turtle的评价可信度
3 t. n/ E/ M9 thonest-service7 u) o% T0 s. E
unhonest-service! H  t. S( d, A+ y$ i) q
oscillation
3 w$ P0 d! o* y2 y  S3 arand-dynamic
4 j1 T* R; S3 M3 B# C% Y]8 |3 r0 f5 Z" w1 B7 n

7 \. S* m4 d( W/ j* |; [, eturtles-own[
5 F2 Y& \$ {, ~/ r9 L4 q* R; ^trade-record-all
5 _  Y! T8 w8 j6 Y- g;;a list of lists,
trade-record-one组成' x" i' P3 u2 b+ s9 g
trade-record-one0 N" Y8 u+ q6 h8 l- u/ l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ C! O* v/ Q" f. i8 Q

* s9 M! p7 m; X* T;;[
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]]
- I( w- u5 u# p) ztrade-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]+ p+ ~" c. Q: m$ r: P
credibility-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
1 g: ^6 K: K) i5 d+ g( |( F. Gneighbor-total# F7 r) A% u& k; L0 h. q
;;
记录该turtle的邻居节点的数目
  ~: h( O/ p1 V0 c) ztrade-time& g9 s0 M5 D" w8 M3 b
;;
当前发生交易的turtle的交易时间
: |  |3 ?  h& [2 Y7 Y0 r( x# {- a9 Yappraise-give
' x4 x+ Z; W# b$ [; i;;
当前发生交易时给出的评价( i% ~  H3 d" F* `/ V
appraise-receive
/ G1 X- Q2 N* C! ?$ s: i;;
当前发生交易时收到的评价4 a& X! O9 s. k# T4 E! w' R
appraise-time
$ ?- v: z1 _7 x- g& D) V;;
当前发生交易时的评价时间
% D6 {0 |" t& W0 P) a+ a0 n3 glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 {: [/ m- N8 a( K2 @. \trade-times-total
  i, n# h' a) O* z0 k" Z- E, O* c& \;;
与当前turtle的交易总次数
$ c6 V' I- b# P7 qtrade-money-total
; C3 k; }) u9 h2 B0 R% l;;
与当前turtle的交易总金额
6 Q3 _7 s0 i5 rlocal-reputation
2 V' C2 d9 N' F3 {global-reputation
3 Z# h5 X. n7 s$ U0 M' Ycredibility
  T$ E+ r& U( g9 H;;
评价可信度,每次交易后都需要更新3 y+ {* ~8 b' |$ d  d
credibility-all$ D9 i1 h0 ]( Y  i8 C
;;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
4 m6 A( u* S0 O
# t, G( ^1 Z7 |;;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
2 }& d# o. `' a4 _credibility-one3 R3 A* [) b" v5 D, A. r
;;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
; m9 p8 N6 u1 nglobal-proportion
% |4 P# N  ^" S* T; Rcustomer$ ?: A1 ]' e4 d% x
customer-no2 P  u1 u# R2 ^  F
trust-ok
, c, |! q' d6 O" ~( Ftrade-record-one-len;;trade-record-one的长度# L  L0 q# J7 l' Q. m
]
, N' z- v' P' v% {* B8 j! d. T
;;setup procedure- @* C0 l; I& i! G! g

, g* j. ^3 H; i5 kto setup
) U4 r7 F9 q' k& o+ u! B
  h5 {' M3 t' i; {) a+ |6 _7 Uca
8 P  w% w  d: Z, e' b

: Z" l7 D2 w6 C) @4 _initialize-settings
! l3 y: f2 J0 K/ c% ]- p

2 h" @1 z  F( {# u& t+ C# Scrt people [setup-turtles]
( h8 E' V8 |; @4 X2 x
0 P5 b7 {$ K/ y3 C- B* l( m
reset-timer
* x6 [- R& g7 O; p2 D2 b

  y# O. C+ d8 w( O0 mpoll-class
: k. S$ U+ I# T1 `0 o, N
) M: {; @+ \# [* t1 a
setup-plots

* m' }' L' V$ j# ]9 e* l  C# T1 h2 B: h; f0 o  f  p
do-plots
  Z3 y- m- l+ a8 r) X3 c
end* L/ F* M$ V* J$ s

+ w# r4 y( S" B5 oto initialize-settings
; Y1 N: o, f% y! b, X2 H
, Q6 H/ P0 v7 ~set global-reputation-list []

0 D9 ~7 v  I1 B1 j; g
- n* K8 j) d, x& Nset credibility-list n-values people [0.5]
/ N. p% f( G$ |, d. n
0 @$ m6 g) A* c+ \& p" i% {5 y
set honest-service 0

- L% W- ^- G* }, _8 f- S) y0 I! Y: n: J" V, w; y1 ]2 E
set unhonest-service 0

, q6 @6 r) ?. h% e% v* I, L- R; i! C, Q/ V/ o2 k0 z4 ?0 p
set oscillation 0

1 N1 b7 w' X. @" c; B; a( O# q* C6 d& t
set rand-dynamic 0
4 ~# c  A& ], `0 A4 Q9 R9 i
end
0 F: c- t; H: {9 q4 \9 K" O; z. o# {: u0 ~$ W5 F
to setup-turtles
& k1 |4 O  Q& }$ {/ {( ^3 M9 C1 kset shape "person"
. }/ w' |1 t; J- U8 xsetxy random-xcor random-ycor9 W5 H4 L6 q7 _1 {/ W' A# E
set trade-record-one []
% P" |: h- t6 _

) x3 s2 w9 ?/ P& F# [% cset trade-record-all n-values people [(list (? + 1) 0 0)]
3 O: g$ |6 l9 s6 i3 q! k

0 u3 G) v# A) f) C" {& uset trade-record-current []& Y! K7 C$ w/ d1 C% Y5 u
set credibility-receive []
, ~% m5 J% d6 E! ^5 U1 rset local-reputation 0.54 w1 Z5 k0 P4 r+ X6 a
set neighbor-total 01 T- P8 {2 r) z: e' V
set trade-times-total 0
& Q3 l% |" T6 S& Z) k# g* Tset trade-money-total 0
4 d, K8 ~( m# Jset customer nobody1 }! |  i7 _" ^$ I  `- q
set credibility-all n-values people [creat-credibility]
5 N" m! b3 _1 O$ m$ dset credibility n-values people [-1]
  T% j5 t& B) J+ O! f6 I3 T) q6 mget-color
2 }, a6 r7 V; D) a

7 l! a7 i5 [; F! d$ [end% k) e1 L& L! W
; P! O8 k2 M, {5 z
to-report creat-credibility
' S4 Y% g& i% Z: \( Treport n-values people [0.5]7 B  [2 Q. L* D8 O/ K
end1 @/ r. e) ^) E1 T
% v8 E5 O: }, h8 n5 [- t; s# P
to setup-plots2 P1 o, m" g- |' v9 {4 `
+ N# X, s* r3 B0 {6 a- g4 j) d3 X
set xmax 30

: F) H. B7 x9 p1 g4 Y) m. ?. N! C9 n# i0 T# @
set ymax 1.0
* |$ y4 T1 O. b; p( P- g) d
8 P2 m6 e6 W9 Q' G+ V6 m
clear-all-plots
0 Y% q1 q: s1 q: ^* J
: K2 {& @' t* w2 w; t
setup-plot1

  E) i% K6 T9 J2 j8 |7 s/ `
  o9 o; ?9 X/ I6 p6 ^setup-plot2

& _! O5 b: ]1 q$ i5 G: _0 I
& v4 x* W! D/ u, S$ Q+ \setup-plot3

/ `- a# Y4 S% Y! ^3 \end
7 J/ y& X; f) O) V# t0 W! ~9 _2 ?3 x2 f3 J! j
;;run time procedures6 D+ v6 E: @5 n& x. \" b. D3 F

; `: g1 c2 Y) e' @% _to go3 U$ @: W; G; D3 {/ m- E
1 \) }2 p% P, n  c' @7 V( J; ~
ask turtles [do-business]
. G  z; n. Y; n" |" M
end
7 b& h3 w# X2 @+ A3 n4 x
/ C6 P; a3 V& W8 n2 j! }& _to do-business . n  w8 R8 Y" R
+ p7 ?; ~1 _+ c) c, X. ]2 l* I
8 W! F8 Z& f/ D
rt random 360

8 e% a# b$ J  X( B- j" R8 Q
/ n# K2 ^; ^- y# t2 p0 R2 b" V4 [fd 1
% d5 I6 v& N1 m5 A$ p7 @0 o

. K' ^% z& z0 f( k$ ^ifelse(other turtles-here != nobody)[
( h3 g$ t6 f3 @0 R

; K7 s0 U( k9 V5 [/ T( F' \7 T/ oset customer one-of other turtles-here
- o& P, Z7 J, s: s
+ e. S( t2 ?: m; R5 @8 t9 b
;; set [customer] of customer myself

8 Z/ B) G) j/ O6 Q1 K( B
& ?$ c0 t% P* L0 d$ h' p# y* Iset [trade-record-one] of self item (([who] of customer) - 1)
$ K5 A* L! _8 [1 u3 l, u7 H7 o[trade-record-all]of self- O: T; ]" c% J! d
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, W( R2 D5 d$ \$ o: t4 G/ h$ i! R
0 ^; {+ z2 p) O. N/ n5 a& ?set [trade-record-one] of customer item (([who] of self) - 1)+ U6 W; Q+ c  U/ ^" Y% G. X9 W
[trade-record-all]of customer

, @# R# D9 L, Y
% X, k5 `. \: V, ~) y3 _2 Qset [trade-record-one-len] of self length [trade-record-one] of self
+ I. i, a! W. h( t9 h7 ~) Q4 P

  p4 |' q, ^. P1 Iset trade-record-current( list (timer) (random money-upper-limit))
5 ~% ?' |% v8 P: G% O% e

1 o; K+ p, Q( _- S4 N2 |ask self [do-trust]
7 C1 P! N2 J9 e- q% `* v;;
先求ij的信任度
# x' O& ]; ~' ]  F/ m# D4 S. U8 I4 e$ w/ w( W2 }1 m" @% _7 C+ X+ C" ]
if ([trust-ok] of self)
; B, C- a+ w+ S: |;;
根据ij的信任度来决定是否与j进行交易[# ?8 a' X* _! Q" q; C
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& Q2 O- q- C1 b2 W; n2 w
5 [2 ^' C1 ~* z
[

3 g3 D# D% D7 e. x6 G( A; l* N6 d7 ?
5 b- i/ D8 l8 x3 c$ b% E1 }8 w; Tdo-trade
& H- P9 j# Q: B* r8 x5 }
) s& Q" H8 T0 s% b! W  ]) N9 }
update-credibility-ijl

: k# P) _& M% `, Z# v, k% K' Z9 _
update-credibility-list+ G! G* j/ L! D; H
9 k. Z# a0 y6 l* @3 T
7 u; m; J" P6 l& v1 I/ `
update-global-reputation-list
: ~/ Y$ Z/ _. q0 l3 }) x" a! e

& r9 l8 Q% x1 O3 o5 w, t7 {9 J5 S" }poll-class
: p# _' R+ w. c# k

' B3 ^+ x3 I! P0 ^! T; ]& O, [9 eget-color

$ A8 Y3 ?5 G& c, s5 h
% [, c: ~( X2 q* {7 i* K) n# e9 z! E]]
9 [4 r+ z3 a9 A, \5 `
5 G' @  T0 W0 _) z7 q* @# K) {;;
如果所得的信任度满足条件,则进行交易' z' P. s% x+ r+ j* b$ i3 w

7 p+ H- c: o; W' D" Z% }[
7 K9 Q7 I. P9 l
# u/ p) l' _3 X% x: b
rt random 360
* w7 H4 s) H* c  V+ @

- N2 V' x/ j4 F% Qfd 1
8 i$ `# B5 s( Y: b

8 j. A% c3 v/ \. S, g]
! ?5 T& Z# f+ L- p  F
2 q3 G. b# h- U) n! a0 S
end

2 t  c- U4 a; }% F
& \5 c: K5 k3 L, _  m  L! s- P$ `to do-trust ) {. z, L0 b+ {7 n" o% S
set trust-ok False
# Q8 h" s( Z2 ]" G, k" T, i4 h7 C, {2 _+ H6 s& B, k  M
+ s# K8 \" Y2 Z3 w, h5 d
let max-trade-times 0) T) L% x$ G) Y# s9 q0 B: v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- |+ N2 R7 j1 Z5 A, _! Ulet max-trade-money 0) E5 t+ n( h9 g. J6 ^
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( Z8 z4 F3 O3 f0 K# F. |: h1 Qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* ~  G- J, ?! P& ~

+ O" }/ j- @" M5 J
+ V5 @$ l/ t7 [1 X
get-global-proportion
% K  ?. i8 K; ^8 Y+ ]* Nlet trust-value
) d" U7 X3 z" e) jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( |2 _, ?; `; m2 g/ G5 ]if(trust-value > trade-trust-value)
9 U0 S5 }% Z/ D$ X/ D' A" U* b) X, r9 i[set trust-ok true]* W9 Z- ~8 N! R
end
) q9 N6 {' ], ?/ \6 [& Q
$ y+ ~6 k  L6 b+ ^) V) _/ n5 Pto get-global-proportion
+ h" J  v! S; x, E3 |: x; Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 e# @! Q  C" O* V[set global-proportion 0]- _; I, j( Y7 H0 i
[let i 04 }  C' R9 g' I
let sum-money 0" P5 H4 a+ g9 K, ?" L
while[ i < people]$ {, ?, r* A8 M. \5 W$ v# ~' O) [
[+ X! H0 I! `1 p3 @& m  O' r7 k# ~) @
if( length (item i6 g9 h  a3 v4 q2 H! b
[trade-record-all] of customer) > 3 )

2 P) O; {8 ~% D' H% U( a: [& h[
; l4 l% D' t- m& r6 _5 kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ }5 S+ R! E6 f6 J- Z]. E5 L2 D8 [7 C# P8 ~) ~+ Z
]9 w" b7 V" j. I9 k& m/ @2 j/ Y
let j 0
$ R& @/ o- `! z# u; R2 K0 ^3 P+ _: hlet note 0' p1 M" Y! n* B  O8 Z, S& [
while[ j < people]2 Y8 w) D# S; K2 ]" V4 W
[# ^6 B# @; ?& |" C! O6 f" [
if( length (item i
9 c; F6 L3 V7 w. H% e[trade-record-all] of customer) > 3 )

- G- \/ e$ Y1 d4 t[( k* N0 z+ u/ `) M2 G
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 v0 y) U3 O7 V4 h. I0 I5 V+ `[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& l! y# d! _* X' {# c- }6 H7 X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& S7 t3 ^# `& }% E) u; d3 n
]
+ f1 T) P4 p2 @) k- r& N]
: o7 x. H! V" k: _3 O1 Q; Wset global-proportion note& U5 X1 ^: _" d) w: i
]; V* |% ]+ r, p/ B4 Y; X
end
8 m0 u+ D- b7 {* L3 O# G* g: n/ _4 I! X
to do-trade% ?: p* G8 _/ [2 O) U
;;
这个过程实际上是给双方作出评价的过程
9 \! w; p$ q# ^; F" [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. n0 c. K4 s% m2 Q4 \( Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ \8 \. o" I  l+ R+ @
set trade-record-current lput(timer) trade-record-current
" y1 ^1 e6 W7 R2 ?& e0 ^;;
评价时间! `3 p% ~, F, ~0 l  O* [
ask myself [0 e1 |6 m) |  T( R1 ~& d
update-local-reputation2 t! d6 x6 @5 d3 V1 ^0 S
set trade-record-current lput([local-reputation] of myself) trade-record-current. ~7 M. s) d) X4 |  W7 f% @- |
]
+ X+ R- A2 ~& U# u3 Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 a1 P  l% O( d# i6 |# j7 ^
;;
将此次交易的记录加入到trade-record-one
' }& Q* [6 {( _. }$ ~6 T' Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' C! A  B/ d, F' `1 G3 o0 Rlet note (item 2 trade-record-current ): X1 K- S7 l# d8 H) `9 N* I" X% W
set trade-record-current0 s% b  C; n/ x! |6 A
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 [$ n3 s- h0 w, S& }2 E) m+ `
set trade-record-current
4 f1 Q2 u- }0 e5 G# B" J(replace-item 3 trade-record-current note)
- U4 l# B: {$ y
4 l5 @6 D1 b( w+ D

! n0 o  [# U$ t9 m0 Qask customer [
! {$ Z) E# f. r& _/ i5 ^3 `update-local-reputation2 k+ n, k, H5 ~1 u% s
set trade-record-current: t2 S9 i$ m) [7 ^6 v! V6 {: Y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: I& P# g) w# J2 p
]
2 W1 \* q1 J. w/ ~0 o" M# Z3 B4 x2 O9 q# k

" S  y) n1 d. v6 O, I; x$ u1 Yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* C& m5 d" t) W
9 A1 O- y0 C5 o2 e
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ {  j6 l5 t/ }% C: ~5 x* D* B* a
;;
将此次交易的记录加入到customertrade-record-all
: Z; K' {5 f$ _: t2 n% h7 Oend2 N$ h  Q" B2 u; F

" v: @# e- r6 a6 U3 {( }! J0 {9 zto update-local-reputation2 n- S3 }7 `2 N( k; [- K
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ S. \/ l: H& r: u% g  c
6 \7 A" ]% p& E6 s# {* T3 k0 l. B4 m( q' z  _
;;if [trade-record-one-len] of myself > 3
% p/ K5 o7 T: G' e
update-neighbor-total) D& c7 t. S# V6 ]# C5 C
;;
更新邻居节点的数目,在此进行3 ?$ W$ X' F# C# e" _" \8 }
let i 3: \7 ^3 V- ^4 S, T
let sum-time 0
% K7 V( J3 G% {' u3 b* Z, Iwhile[i < [trade-record-one-len] of myself]
1 z5 x4 e4 q/ Q[
/ `& y1 N% h+ P' j) I7 g. Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( n, \# I& G4 J( Iset i3 f8 G8 A/ w2 o, ?- Z
( i + 1)
+ f) B! o4 N" O  ~7 ~" R/ j9 s
]
' s2 x! d) U' j  E* Mlet j 3
$ G4 d! [) o9 ~$ L/ E" U( d- @  Blet sum-money 08 ?. \$ g! h0 x' |. {
while[j < [trade-record-one-len] of myself]
! r; v0 ~7 _4 m0 u* T[
. A" q! V2 O# Z- Z8 p3 H* [set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! }; Z+ j& j2 {6 L: O
set j
2 o, e) v8 I9 i: ^) q; e5 `( j + 1)
  p) p& A" U3 M( w+ T- i9 [
]* \% b5 ?! f2 L0 j  j) p
let k 35 y" c8 p% Y. E
let power 0" L- F: Y# ?" r
let local 0+ Y6 H0 x+ m. Q2 f; S1 j: c! _1 z0 i
while [k <[trade-record-one-len] of myself]1 D( @3 [2 d: c# M1 _/ B
[( b% _( a" H( V* k
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)
" M* v$ p$ v8 t, h2 xset k (k + 1)
0 D$ J; X( V% Y- Z$ s9 D! S0 G]
: U" W* e) i. r" wset [local-reputation] of myself (local)
2 q7 M+ C7 z6 D3 _end- a9 D: d( Q, Y: A

( |( t2 R+ x6 U2 j3 o: i. gto update-neighbor-total
$ b. X2 g; \7 \1 {' o' F. w% {2 x7 |# S% N6 E3 y5 W( x! I/ d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ _( ?$ m2 D/ T
% y/ w4 s$ ?3 H+ x

/ n5 t- u1 l+ J$ eend
( |' f- a5 P- e0 ?7 o% W( ^# c8 t+ T/ x5 a* Y% ]' T9 d# V, N
to update-credibility-ijl
  Y* c6 k" V% w, q* P9 n2 u
8 b" T8 [% E. ~+ O2 O! ^0 L# D;;
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。
/ ~$ e; x9 w) C. \let l 0. v, d- y3 Z( C. Y" b
while[ l < people ]
1 ?/ K. n, {$ e$ o3 k8 e2 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
. m, }  S: f5 M4 p7 y[
0 g# H/ I% d# `3 _  Elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 F$ n+ Z1 r/ u+ Z7 Z9 i) ?) c
if (trade-record-one-j-l-len > 3)$ s/ U+ |6 Z& Q2 ^4 H% y/ s( h
[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-one9 c6 K8 y0 i$ I- |: Y* I8 q3 T0 Z
let i 3! `9 Z' |0 H+ P( R' d# N
let sum-time 0. A$ J: q  p, m8 N! J' M- Z! s
while[i < trade-record-one-len]: e1 d3 k; o! a+ T
[
" u+ I! @( A2 t( Y; _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 F! Y- _# k( T/ D
set i
2 p2 h' P; L( _( i + 1)

) {4 x( v0 [0 m6 |; R! L- G]
3 O/ m) d1 S! y4 a0 Dlet credibility-i-j-l 0& ?7 ]* h; Z+ h' y& K
;;i
评价(jjl的评价)
* `8 X. Q- r/ M- }/ Y" Alet j 3( w+ a& t. c. t- {* D
let k 4
8 n2 {# ~1 P$ D) G8 j: m9 {  pwhile[j < trade-record-one-len]
% W& P1 |& j+ J( a[
0 g1 Z/ z5 J% G  u6 g' rwhile [((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: m3 q# I& P  Z8 D3 [. [
set 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)
, P! F5 v$ f1 T3 c: gset j
6 y) w. t# A: k3 f" p. V7 N/ t( j + 1)
; |% j3 P3 F7 N8 o
]# r. P9 ~" k0 d* v
set [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 ))" C' K3 H' A3 ~) |4 k; V$ N
8 i! v1 H4 C% u& F! n4 |, Z/ I

3 ?& Q: w, F$ R( ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 U' f$ @+ |- ?; T, u1 B
;;
及时更新il的评价质量的评价" \+ j, W. Y) w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- ?* q8 W, a4 a/ g0 L; {; E$ oset l (l + 1)
, |, p4 s( `, O; J+ Z" S/ m]
5 R( \4 \! V& k1 mend
2 n* `2 \% J2 a! Q( R- ?3 u* M8 ~6 W* }: R7 G# C# [; f
to update-credibility-list) b; x. H& P* t, x; L9 v9 h/ l
let i 0
- l  r$ n0 m8 B! dwhile[i < people]
5 s( I% {& X; Y, H. i[1 V  P! ]& |# X9 }
let j 0
, E+ N. r8 |$ Y4 b4 c4 j/ G( Blet note 0
5 M$ @. n# t0 n, Slet k 0# a$ ]3 {5 J, [+ s5 \
;;
计作出过评价的邻居节点的数目% e) g! R. y+ k4 m9 Z  X
while[j < people]6 g$ `# o; Z" @) a
[( n$ _' W. g' l& {
if (item j( [credibility] of turtle (i + 1)) != -1)5 S! s3 x6 P9 A* j8 Z& |2 k
;;
判断是否给本turtle的评价质量做出过评价的节点9 z. P0 X2 U  G' p) s+ _) _
[set note (note + item j ([credibility]of turtle (i + 1)))8 x$ R* d( A. Y6 J' A, E
;;*(exp (-(people - 2)))/(people - 2))]

4 K. o* A- M( V: Vset k (k + 1)
  f( T. O) l1 f$ V! d3 E/ c]
; W3 \7 \! j  @$ Q, eset j (j + 1)& V) p4 N/ ]$ Y3 V; u4 d
]( }4 y; }5 |. p
set note (note *(exp (- (1 / k)))/ k)
; g& i5 p  f% _( g# d& hset credibility-list (replace-item i credibility-list note), a; Z" D6 |. `; |7 C( f
set i (i + 1)  F- ^, K4 y+ S. f4 Z' R! r
]5 P5 F2 G' R( b0 U0 j0 {
end
" o0 ?6 j5 P- W1 I
" Q. J$ _8 i0 v# [/ y5 Z+ ]1 Yto update-global-reputation-list% N. W2 v3 B3 d: X
let j 0
" z& g4 @. a* o6 p- ]while[j < people]6 |* J8 b- N& |: P. F
[3 W/ Y5 h# K) B3 q9 v
let new 0% ^! H0 r3 f% P2 G, I- J% p
;;
暂存新的一个全局声誉
7 ~4 J6 O) u) N2 N7 w) g7 e* llet i 0
5 k4 n* h! |( @9 `0 O& `9 @let sum-money 00 T: Y- a6 S) G1 ]% H3 J) f
let credibility-money 0
, P; u8 i3 q* F7 G+ q+ zwhile [i < people]" s, O/ ^8 b& s/ t8 |+ z3 j
[
) i$ a  {& O8 C- kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 e$ g4 P8 P/ d# y  w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- x7 n0 i4 i# t! _: T& F' [set i (i + 1)0 S# c, _1 A4 K1 |, L
]: [* G; h" T; T' d0 X/ c* p6 P
let k 08 t* E" l! `0 U  N
let new1 0+ Y5 q# X$ q% E/ R; B
while [k < people]
3 S! C( {- q+ w. d# D. w[3 Y2 p9 X& Q6 o7 d' O  ?
set 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)
% a1 C% J, _2 b) |3 c4 ]' Aset k (k + 1)
; g; ~/ v; I5 I& B6 ~1 N  ~- P: ^( g]
2 r2 b6 J0 T$ L/ @7 Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' u: I8 q$ [4 M$ D+ f7 o
set global-reputation-list (replace-item j global-reputation-list new)
, \  I+ o6 f) E; \set j (j + 1)
# ?) j3 }% @# t' U]
' R. z. ]8 |+ J- r! jend
( Z$ S2 n) X2 T, A& F" _  r8 P8 q
0 s! Z) h$ R! a* F9 z$ p: F' N

$ t6 ?- y- n- G* D4 ?* ?. ?to get-color
* u0 D9 D' P  }0 o1 y
5 k; U; b( @( I: {- H; R0 N) j6 kset color blue
$ W( w9 r" A3 w2 t
end
8 `6 `5 n; n4 \1 T7 }7 B" e
  {/ U3 D6 {5 P! }! p/ eto poll-class
. g8 ], n2 }/ h4 A( vend* J( b3 o- \) V: H3 ?! x- X0 C% v/ C
2 ]9 f1 T( h5 t" {1 Z5 _% V: m5 O
to setup-plot1
1 S% c2 u! h0 O2 I+ ]! d
' j7 H+ I" {7 G; O# J1 Y# |& \set-current-plot "Trends-of-Local-reputation"

$ v  e5 a$ Y& X: u8 ]1 K  T: `" R0 n' I# O
set-plot-x-range 0 xmax
6 j5 {  h; |; o
8 F. L0 T$ l& {3 J# {
set-plot-y-range 0.0 ymax
' R4 v& }- p, M/ z/ o
end, G7 K' F( R) `, {+ w3 o1 C

8 d- I7 r: h) c# ]3 @4 \) d8 |% hto setup-plot2
. |, G1 k4 _1 X
) u2 {% M& s* E: K) T+ \0 X( g# hset-current-plot "Trends-of-global-reputation"
. b3 L5 `8 K0 A) o
, M& s5 P( s1 q8 W4 o5 A4 v* b
set-plot-x-range 0 xmax
4 P" b9 C/ f* B1 V
1 V' E8 R8 D& M
set-plot-y-range 0.0 ymax

# u3 X0 n9 @; L9 E% fend
* A& v$ g1 M2 K' i# H' K/ S4 u* B, f/ U8 I+ h! ]: P9 _) t6 v
to setup-plot3
; `) A. N0 l& J7 h2 s% K, I, j) O' F* Q0 `* R" i7 Z* g7 ]& U
set-current-plot "Trends-of-credibility"
1 j  W/ e6 a% r  U& E$ k; i; w3 Y; q
/ H/ g# m5 A5 S9 p9 N8 n  r7 R
set-plot-x-range 0 xmax
. M9 b) W9 f3 \

" J; F$ O. y3 D3 a; Pset-plot-y-range 0.0 ymax
& F  f; q! K: s8 ]5 ]) |) T* Y# [5 s* Q
end
+ {% Q2 {5 t; [6 l: r" X) F0 @6 e8 q
to do-plots* b6 H' W5 ~- R6 G8 G. r
set-current-plot "Trends-of-Local-reputation"
* N# n6 T* I/ K6 N; R* p# p+ c% G: Vset-current-plot-pen "Honest service"
- O; h, i* I9 |, Iend& H7 {3 n" A, }- {) Y( u
- g( g9 g8 w: M% l& O, I" l$ 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.
9 J, O* K( H$ F% _. |
" B! e! O# x3 U* t* i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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