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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:
0 q4 k3 D- l! I. a9 T' ?to do-business
. g( \4 U# Q3 m/ a. J$ ~: f# ] rt random 360
: j4 }- e9 m+ u9 a* @( X1 ~" E# x# T fd 13 X/ q1 \0 [7 M8 a% Z
ifelse(other turtles-here != nobody)[) g3 f7 y2 y3 w3 t
   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.
, f, i4 r  U0 w+ A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ o: _9 t1 ?, n3 X: }' t) {# x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- g2 J8 r7 q" A# h" [! l7 H
   set [trade-record-one-len] of self length [trade-record-one] of self# h2 n. ]  f1 ^+ p6 z/ f; h
   set trade-record-current( list (timer) (random money-upper-limit))2 q9 K$ l& ~! _3 J

& ?" n6 L# ^5 r" V$ E6 z# O' I问题的提示如下:7 g0 i) [* X& J
1 [5 K0 o  _0 v$ I6 S. `  y6 L
error while turtle 50 running OF in procedure DO-BUSINESS
/ T  t4 [" Q5 f9 f/ A! M* Q  called by procedure GO
0 c# i( o: l9 Q* W, \OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 R" Y3 O. t7 P, q6 r! Y2 k
(halted running of go)' }/ Q. Q: o+ t6 m6 H. }  a  M
* ~4 H! _- Y: j( N& j2 p- D$ p) O8 P
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& L# y( D1 q4 ^% 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
+ L" M( N" E' i/ c0 H5 j: Z( x! Zglobals[4 y+ ^! z5 N/ [4 n6 T
xmax
$ u6 O4 K4 K, D2 j; Z+ F$ d7 bymax
& L' q8 T0 X2 |$ oglobal-reputation-list! J$ u, N8 _. T' f; U

$ K1 k# r; m: A1 W& |  Z;;
每一个turtle的全局声誉都存在此LIST
9 T% S1 e- x$ R  }6 I, P# wcredibility-list6 n1 @3 `: ~9 e& a2 i6 R: d+ h' l, W1 p
;;
每一个turtle的评价可信度/ B8 Z4 |' ?7 n) N
honest-service& j) q3 k* \! }. d# `
unhonest-service$ {$ f. r2 h$ f
oscillation+ q; a- j, F7 F
rand-dynamic7 X9 O* k! b& M
]; W* D3 L( v/ t$ T& s- M' K# t

9 h  c, e0 d$ |3 j! cturtles-own[
# P: c* M. c1 Z# @2 T9 {6 ^trade-record-all
3 ?, D6 i/ T/ v;;a list of lists,
trade-record-one组成
1 B$ Z3 `2 p, S7 X; V1 S! strade-record-one. D+ }! ^( u2 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( O9 w5 d2 ~0 I- T& H5 ~/ B8 D& B

" D' H2 V9 v0 o. v5 D;;[
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]]
, w% L. T6 r1 b# {3 a0 V* c6 T8 c, otrade-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]2 U9 f+ Y; o3 e6 x7 D
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+ j$ b) r. u4 V1 b6 Z8 S; m
neighbor-total
! N% ]4 L1 @$ ?; M;;
记录该turtle的邻居节点的数目
6 s" v5 y) ~5 p; itrade-time
1 \+ Z! q8 m$ [) e; J+ ]9 r;;
当前发生交易的turtle的交易时间
6 X1 @. Q4 A! Gappraise-give
* U( q3 k; W9 U3 n4 g;;
当前发生交易时给出的评价4 k: k# \4 V$ W8 K5 x- A# M
appraise-receive
9 B  D7 i# f/ T2 t* ]0 N% c;;
当前发生交易时收到的评价4 ~% M: G9 z% W
appraise-time
+ q5 s. w  U/ u: s3 x;;
当前发生交易时的评价时间) {* n! I8 u6 c1 j# W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉: A5 \3 B  _2 i" k/ z0 W7 I
trade-times-total
8 Z6 S( |% e' y8 h" S0 O* z+ F# U: k;;
与当前turtle的交易总次数+ o5 |: ~9 w& R0 ^; L
trade-money-total
2 _1 T/ M; E2 h! @;;
与当前turtle的交易总金额
! y9 B+ `9 |3 ?/ \local-reputation
  [" q& f9 h$ [6 c+ l/ d/ a% b9 Vglobal-reputation( b) w- ]6 [$ I$ Z  |9 M
credibility- ^7 @! R: a+ s7 I" |  h. f9 N
;;
评价可信度,每次交易后都需要更新
6 G7 n' v- \' M+ K! n0 j; a3 z& mcredibility-all
* n7 K/ {& Z2 }& w3 l;;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
$ V7 w) Z4 W- w* \3 g! s5 ]) G) d- W3 ?) z. D
;;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
) l2 G; K- ]& v  y! Dcredibility-one
# N4 u9 f2 ^9 p: a% A! ~;;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$ `; x) O6 V! l0 w  E; K, P
global-proportion
0 P/ X' t6 o8 a1 D+ `customer
* S% v  z6 f$ Z& Pcustomer-no4 i. l1 _/ B& o, u; b# Q- ~
trust-ok
+ G1 L- \# n2 A3 c4 w7 K1 Ptrade-record-one-len;;trade-record-one的长度. k/ b7 B( i0 X" S0 b8 f
]
5 R9 T. i, j% d/ {2 M) @3 ^. g1 ^/ C- ^
;;setup procedure9 a( x. L' g" Q$ F+ n3 P: C
* M, l9 Z% J) _. D$ a
to setup% n  P3 z4 E8 p% z

" E& U( W8 O& E. _( X  sca
- L* w2 C$ E: _1 J# z8 s
9 m/ n; T. B. b4 b6 n
initialize-settings
1 V$ Q" M' g! d; p( g
& n/ X9 {5 j$ i! |8 O- h" g
crt people [setup-turtles]
6 W! {; |+ h* ?; y

8 x7 g' b5 e2 C$ P" i0 ^reset-timer

( _' H2 j  w+ K1 h# u7 m: @( J1 R. C" l7 K* @9 s0 g
poll-class

. L! D/ A% m% Q4 g+ B$ V7 b# T% A' M7 Y, A" y
setup-plots
9 @5 b$ [# |. ~- p! a: a

/ b5 q, V) S- F3 G" a. B1 y0 \do-plots

+ N9 P3 b5 Z0 D  p$ t! Hend
* ]! p' n7 ?3 @/ \5 i; u2 m) b+ A6 E) o+ o( d# [. t
to initialize-settings
0 d  s: M, f1 \# ]7 i, ^' [% d- u" T  [- z
set global-reputation-list []

6 D/ c' z2 O+ o2 m. F9 |' @
, @$ Z9 W( L: ^- eset credibility-list n-values people [0.5]
* M3 v  Q. ]$ M) s8 v1 ~) g
! b1 [& J8 P! T: r! z0 f
set honest-service 0

3 S$ d( q; |' s/ U* t' C$ i( @3 h% [9 E, L
set unhonest-service 0
& R$ D$ F( I+ I4 S% T4 w8 G
# {5 S( V2 N2 t) H
set oscillation 0
& w0 {" C3 d/ h7 F" l# m

3 y& B. z7 q6 P- W# Q- M' Wset rand-dynamic 0
9 E) d  x) ?' L* k  R4 s, j
end( y8 t. ^; I% w  |

- Y2 |6 v; S& T" nto setup-turtles , e, ?1 T7 x7 w4 g
set shape "person"
& }& C: }0 @; ]' G; R/ ^# Z8 ^setxy random-xcor random-ycor
. d4 {5 I" W$ b7 Nset trade-record-one []
7 |: H; }9 D( C
  W' z0 f5 f/ M1 c& Q/ L
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 F" x$ H$ ]2 L* ?% O$ w  M* g
3 N) A+ ?2 d4 q9 g$ U! a
set trade-record-current []
6 D' {+ _: Q8 l* jset credibility-receive []2 N: {9 p% }8 \4 K
set local-reputation 0.5
0 Z8 x, i" y. S) ~" @1 {4 Bset neighbor-total 0: W6 D% m- u* S6 v. Y
set trade-times-total 0
6 u# Q+ W  \% e+ Eset trade-money-total 0
# g3 }& S8 ^) e  u+ g2 xset customer nobody
" X, U' j8 ]7 A; b+ I  Bset credibility-all n-values people [creat-credibility]
" a8 ?* @2 w$ h6 _2 `/ a5 zset credibility n-values people [-1]
  v8 ?% l* ]5 U0 r2 J, Q0 O, aget-color# g8 L1 D* @2 l, L
+ n* k/ Q( d. x$ F
end0 H9 v  J: `4 H

& V+ t' |) ~/ E, Y5 Cto-report creat-credibility8 m2 U! V6 \7 H* ^! B. {( _
report n-values people [0.5]2 p+ ?- ~0 q1 Q# d) V! m! M( U
end
: D' i! |" b: A# T. v" R/ Q3 }: q0 x
to setup-plots
. ^, a1 h, V, J2 x9 v( _8 {9 z" \/ o+ \, y1 U$ t
set xmax 30
7 @9 ]/ p1 |& b
8 B+ @7 v' g3 |
set ymax 1.0

4 n+ U, x5 j2 x1 w
, n) v* Z: E& t: ^) k% }clear-all-plots

* k- o% f5 K1 K% J- U) Z2 f; y. n
: w4 @! V: F3 y8 S  Dsetup-plot1
1 g9 A5 U2 }5 w9 R* O% `; G6 w

# i* w, h: E$ H3 ^6 k/ ]4 csetup-plot2

4 F4 C! R4 y9 i5 C, M3 ?6 \4 R' V% ]/ d: h7 z/ }
setup-plot3

% L, @+ L- v4 c( h. {" Pend
0 {/ M9 p+ s& u
- v- K7 i+ c# F$ p7 z4 i;;run time procedures
8 _' |& o- C( U# Y0 ]6 }* k3 V: O
5 D& e! F1 m7 a" l8 @; ^' K2 Q1 |to go  O- A2 P. m; q# J' q

) b$ L5 @* f( n8 S+ V7 }8 w  E+ Kask turtles [do-business]
. s; S$ L$ L+ l% D# w4 }# I- u1 x
end! h6 m3 D' p# \0 G& O# Z& ^; G+ g
: K! ]" Q* f' m1 [
to do-business : r* n3 d& C! P# d
6 z$ Z# G4 u( S" n; x4 o5 f* V" Z

/ t) p9 d4 N. }, p! t2 I- \. }rt random 360
0 R2 R, Q% ^$ D- [
" u1 C4 W9 v/ T( O
fd 1
7 F. z( D5 d& q2 N0 X
! N0 |" [* |9 ]* X$ q4 Z( ~
ifelse(other turtles-here != nobody)[
9 i, t1 ?5 x; M! r" L8 G2 ^
% e" F6 g6 ?/ a' K: o
set customer one-of other turtles-here

' D* n) i. o7 N4 Y' V0 B' f. f7 Z: H& |- t# \* `% g
;; set [customer] of customer myself
4 n. F: F3 C# k$ q) w. e
! E. s1 ?: h8 x/ a3 N
set [trade-record-one] of self item (([who] of customer) - 1)) |( k2 z0 y# |  n, X
[trade-record-all]of self) M3 ]* _! d, U$ v0 F; l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ s$ y; E! K1 R- _

, o' S9 u6 _" a& S1 d* lset [trade-record-one] of customer item (([who] of self) - 1)
2 G7 n! Y  a  T; d& H[trade-record-all]of customer
1 c8 Y$ d, N( y8 @$ C/ }

' a; C2 F7 \2 M, r7 wset [trade-record-one-len] of self length [trade-record-one] of self

" O' I! d# V; n
$ @: N' i- \9 ^4 sset trade-record-current( list (timer) (random money-upper-limit))

4 Y* j% o$ b" p
9 q2 [. R( v  A: \/ O3 Cask self [do-trust]: g% _7 y  z2 U3 F
;;
先求ij的信任度
! |0 f, U( L4 F5 o! @
& Y" {2 U# ]4 T9 V4 E9 Zif ([trust-ok] of self)
/ O, X% [. u! ?0 V( q;;
根据ij的信任度来决定是否与j进行交易[$ X0 L) x, x/ H$ o* t! B
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ b/ p# b2 ^1 L3 A1 i+ m, t
0 N9 ]* G& m; y8 O2 q& `# m8 Y0 a
[

& `, L3 f! e- Y+ r( X+ b- V' H2 W0 ]
4 Y- |( E: l% M9 @- A2 Ydo-trade
/ A! z( K* y* _1 l: L9 y6 |$ O

: v" T. N; T: n: U* @update-credibility-ijl

8 N% I- d* H; J: W8 I# I: p, Z0 ~. ?) Z
update-credibility-list6 T" A, L: J' w

. W0 A; Y$ e  Y) v1 V! j' L' \" D2 B6 m1 A
update-global-reputation-list
1 n+ ]- l. B- |  D2 m. V
5 v$ q! R: K6 ?! A( ~  \
poll-class

6 J/ S8 V; U' v1 i; F: ~$ g0 O
8 r" b6 J) J2 K) P7 t5 n. A7 gget-color
6 c+ K6 ~6 N8 x" u
. i# r3 J' F# U" P! U% A- x3 m
]]
) i; C$ H! ^- ~. b( C( ]0 p: A  g# `+ z4 X
;;
如果所得的信任度满足条件,则进行交易8 x8 O. K. O* j6 W3 e* k9 {
. r5 j1 ?" o$ ]5 y- U' t; N
[

; R8 ~* P" r. `5 q" N, |* j8 L
4 N" H. @; w0 b- Grt random 360
* J. v5 @( o3 g* a( S

, s6 o0 F' n" F( J) v2 Wfd 1
* m% T. c' S: H! t; N

, V' c0 T' Z6 r5 q+ |]

/ O# f+ j. L( ~$ Q
* C/ V* u8 u( Z; g+ dend
( H/ T. ^/ Z( a: h2 R

# m" z4 A  q4 m; Gto do-trust
6 @* \3 W% X4 c9 Q" {2 b! Qset trust-ok False( Z- E& q* S* K# [
# E1 ?0 y: H* ?2 H' e: L0 ~2 G: ]

, b3 T+ Q$ n, }$ [* E3 j9 b# ~let max-trade-times 0* i$ G- E5 ^! a, Q+ n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 r5 V) A( ^3 }8 p& i9 Zlet max-trade-money 05 F! Z- v1 n, |  h  K, f* m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& y1 z% e+ m& R( V, F7 ]1 [6 Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ k2 m- O) g+ U0 |7 F+ l
! b. \, ?4 r8 }$ ^! x$ C: [
: b4 i$ u( K( R
get-global-proportion  x6 m8 ~3 b+ E, c- _3 t2 ]  ]
let trust-value
4 y4 Q3 U: z- O  C, O2 B, R  slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ V& p7 \* S9 J# V; r+ X
if(trust-value > trade-trust-value)
, {4 S( T7 L( y: l! [[set trust-ok true]
$ l# O# M  c3 r4 nend
( C: s/ i+ U  z2 K& |% T- n! d
* Y3 t6 z& ^# u) C" A6 qto get-global-proportion
& m5 Q2 U; S( t. W* K8 a8 J% B; Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( Q: ]6 @( U7 V% t. t
[set global-proportion 0]
9 G) u# ^) S, r# q5 T6 A[let i 0
$ K) _- G( x6 F5 K' Q$ Jlet sum-money 0
" W; v2 b- o; X7 u: ewhile[ i < people]) y/ L6 O: t( [/ A( ~: [; C8 j
[
" w" J4 I$ n. ~: Zif( length (item i5 p, m/ D3 t% V7 O, e: [
[trade-record-all] of customer) > 3 )

# S$ Y7 L  u" D# P' V3 ?' B[
5 m5 ], A2 G  B0 X: Sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 z  }/ t6 d$ a6 c; M
]7 Z1 B& R2 M2 x9 {  p
]
  U" ^7 \  i, ]let j 0
6 Q: h1 ^4 @; C  H6 Y# ilet note 0; c2 c( \; H- O( w
while[ j < people]8 L# }+ Z2 x! A, [# R9 Z
[
( m8 l' d  a4 w) Rif( length (item i0 L  v- l0 ^7 s
[trade-record-all] of customer) > 3 )

' a& U8 w; ?# E1 }: `[- H, P) p' H1 A0 ]. L
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" }6 N, ?$ u3 h' _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 C" ?9 j$ B. ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( ]) r3 w- x6 L0 R) O5 L' Y
]! _# g4 s* W1 R/ y; ~+ R
]
; l$ ?8 s( [" b1 U9 K) N( e1 Y% uset global-proportion note( @5 y2 X7 v( i3 @/ L
]
4 t( n- p9 f" N1 G6 p$ mend: g: e4 {7 T$ [1 L' r( |

& |+ C, G) r0 S/ {+ t7 Y0 dto do-trade% i7 s/ A- L$ K+ J/ |* b2 y
;;
这个过程实际上是给双方作出评价的过程* s6 F' x; j& [5 A8 W+ t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 u* N. R8 n6 V* s9 M0 Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& J3 w& y/ t/ T  f/ b1 eset trade-record-current lput(timer) trade-record-current: e; G; J9 ?5 K5 e* b, E: }4 q
;;
评价时间
' Q6 G3 J0 r! ]& r; o- n, V3 |ask myself [
* g: D# E8 q/ O4 e3 S' `5 i5 @" ^) n) Fupdate-local-reputation" K8 {- [  g  a- L
set trade-record-current lput([local-reputation] of myself) trade-record-current6 n% W9 W: ?* T" D1 \1 |! Z
]) c& G% z# E( g9 o. H
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! D' R6 \. d# D+ E2 [/ y3 G7 w;;
将此次交易的记录加入到trade-record-one
1 J' L6 U, b( jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' `& |& W: M" y
let note (item 2 trade-record-current )5 E5 {4 H! l; t/ \' \9 W
set trade-record-current
; s* W! `) f. Q5 }7 e' d5 [' C% P(replace-item 2 trade-record-current (item 3 trade-record-current))
0 b/ Z4 t6 u  [6 l& e! d, r/ S" v
set trade-record-current4 N' F$ L7 l2 U. A, X2 p
(replace-item 3 trade-record-current note)
- a. q8 A2 N8 q2 M" }  d
: @1 F7 ]: d& n% J8 S% ~. ]
$ {0 }; j- A& L3 A* K8 E( y
ask customer [7 P/ T' `8 B( e
update-local-reputation  B3 O7 T9 c/ y2 G! `
set trade-record-current
, o( {# H/ x8 |6 P! |9 u) N, v(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% A. {2 k8 e' K! G: w- B. a]
6 W" ?. H7 r( G- R! c% R, A% q& V. x

) M/ Q/ g1 w9 N) vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 b1 k6 f( }3 b8 D
3 S5 w# d/ k' y0 L% P
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! p- d& p2 c/ Q3 P2 J$ e;;
将此次交易的记录加入到customertrade-record-all5 q2 }3 O: I' C! y" Z+ |! U0 t6 O, W
end9 _3 K( L8 F3 {- M8 W" t
/ O. E0 v7 g5 V7 o3 w& o" \. [
to update-local-reputation
; G+ }& H3 i9 n" M& {1 N, E! cset [trade-record-one-len] of myself length [trade-record-one] of myself
/ h; D+ m# G$ n$ Q
- [1 E& C% ^+ T7 a0 }6 d  l( Y- T1 \
# m7 J9 d# V5 N) E: k;;if [trade-record-one-len] of myself > 3

. g* O$ ]1 W9 Q# T3 Nupdate-neighbor-total
+ t. W4 j1 ]' k;;
更新邻居节点的数目,在此进行
" R9 P6 m' q1 W8 }1 g% Y" A/ }5 S" blet i 3
2 y; E" c* B# X0 U$ l1 olet sum-time 0$ W2 ^! M$ g8 D1 r, V& e( c
while[i < [trade-record-one-len] of myself]
) |! T- V3 G4 ^+ u, ~[
  P2 d: }3 Q. w5 d8 Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 ^* i* \8 o3 z8 p) k" h
set i. u) w7 L/ p' D5 u$ N- n
( i + 1)
% K  u" f& A* q7 X- P4 \
]1 H9 |3 T' _$ W! O8 p
let j 3
- a8 B* U! D+ j- z& A4 X3 v2 _let sum-money 0* h% a! @% Y, ]( v$ Y0 H6 W! q$ j
while[j < [trade-record-one-len] of myself]
6 T) G0 `) d/ H1 [) l1 h* j[0 j. {4 }5 d" H5 v
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)
( e/ ~+ q& z% ?7 D. a) F$ B) f) ?8 R. ~set j
/ b( T  E; F2 f2 C1 J" y7 ^5 P; U( j + 1)
7 W/ O& L. ^; S; E
]
4 u/ f; P: l) ]  Wlet k 3; r6 K# S% l3 d5 m/ [' j7 p2 X
let power 04 n7 _: x" {4 r3 S) b9 h, x
let local 0
- b1 E* T; _, \  j( Rwhile [k <[trade-record-one-len] of myself]# V1 ]( v7 k) N! G6 }" B2 y
[5 ?2 A0 y5 m$ l) D2 v2 n4 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)
9 s' n9 h5 l  R4 m! H2 z8 ]set k (k + 1)# c! n6 n1 d& h# X3 M  U- P
]5 ]8 M( _4 i6 y% E. ?% b1 F" o# t% O
set [local-reputation] of myself (local)
/ u% B  J' R  Q4 X8 w: Dend, [& M) @4 q$ u& e2 ^7 A* F
/ O3 d( `* [; a# O: U
to update-neighbor-total
" r$ G2 i2 E4 j" o/ X
4 X; {+ h# {4 Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  k0 O- }$ E% U
, U( N% W6 h( H5 w" j, v

4 L9 s8 H1 Q- ]* D1 Vend5 M4 [% Y. z3 z4 Q& W& i/ k$ V
7 k! \" o; T" O' W! s- F
to update-credibility-ijl
) m8 m8 u- Q5 o! Y+ [6 v9 D+ Z* f+ g0 l6 x' q* S+ 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。) U6 y7 P3 i( O" j% m& K$ |2 D! T5 x
let l 0
+ X2 M- }$ E1 S$ b5 N8 C$ d5 F  Fwhile[ l < people ]7 V) ?7 }7 A4 h- `! ~
;;
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5 i2 c/ X$ A* A
[
& `! [& R  S5 Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 x; |7 u7 r' S( P
if (trade-record-one-j-l-len > 3)
9 R, g+ `3 H4 B9 h' 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) v) F  i8 K- a) \
let i 3
9 a1 H' \# m/ V1 V5 B- q: r$ Zlet sum-time 0- Z3 m# V( e8 w/ T1 H+ i5 ^( A
while[i < trade-record-one-len]
/ ?# W# }: j3 V  x" R[) b0 V" W& }% r6 A) r: w
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ _8 o7 l4 Q/ ~+ }! b0 Q; V, aset i
3 B1 s, [1 U2 |* J# h( i + 1)

( `+ p! w% W( D) V]* R$ F  E7 q, f9 E
let credibility-i-j-l 0
- G( F8 M  ~# u) K: Z( q;;i
评价(jjl的评价)
( f, ?3 ?2 j% S" `( O! J% \4 `7 Mlet j 3
! B2 |" Y" o% v8 j# Olet k 4
! A/ {' {9 C  N+ m$ W% w* d& s& hwhile[j < trade-record-one-len]5 V2 |( Q" ]% O8 `9 F+ _
[6 ~/ O) I) c& M
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; B) d; ?3 ?) D8 J6 j; X  l
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)
' R6 h, `) l9 r( l3 H  k, S% Eset j
: X" E4 u% d* O; N2 u; N, }) Z( v: L. p( j + 1)

/ e6 w& [3 O& f$ L7 R  M$ d]$ g% a$ l) c0 d2 x$ D+ ~  @
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 ))
! {4 ~! Q1 \5 |/ e  c, p  i' A1 S: [0 ^
. y* b  N* t) g! ?& q1 g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( u9 s! b. O" J;;
及时更新il的评价质量的评价
8 W6 B3 {! Z- A$ @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 F( V/ }- ~# w9 U* xset l (l + 1)* T" N8 A; U! W) T1 C
]2 ]6 R& A1 ]7 J
end
+ f  Y2 d/ P1 M! L
' o: ?0 k, H8 H$ |$ @! l2 h* K" Dto update-credibility-list. Y1 x6 X/ b) X0 R/ M1 G
let i 00 y# h8 w) z( Y% W! U
while[i < people]% a4 B% f1 Y  N: O3 c- ]
[
+ {: Y0 C( \4 {2 I# rlet j 0. T. E/ g$ z6 n0 E2 ?' b% G9 A; g: m
let note 0, K0 ^" R' s; S# }4 C
let k 0
% |0 O' f% G1 W. `8 w;;
计作出过评价的邻居节点的数目3 s" N5 Q% u4 L: o' D% A
while[j < people]9 U8 |2 g( Z0 @' T, r
[! B: ?4 @! d& L* s) w) }) o6 q
if (item j( [credibility] of turtle (i + 1)) != -1)
( r2 D3 i7 ?+ n6 L8 p' p2 r' O. q;;
判断是否给本turtle的评价质量做出过评价的节点, Y  a" z, j  ]! W2 N& X4 q% A
[set note (note + item j ([credibility]of turtle (i + 1)))
+ e$ d5 z2 g1 A' e. K; M;;*(exp (-(people - 2)))/(people - 2))]

) N, }+ i" D# V7 o" U* J1 H. sset k (k + 1)9 m! s1 l, I" [7 ?$ i/ _
]: C- q1 s- i( v+ i: C
set j (j + 1)
5 Y$ I0 B* T- a]
0 h( w& b  u7 i' uset note (note *(exp (- (1 / k)))/ k)# m3 ~/ [% i( i3 k8 ]( g
set credibility-list (replace-item i credibility-list note). M5 e2 k+ K5 ?0 A, E4 q1 U
set i (i + 1)
% m0 J; e5 }9 N5 A, T/ Z]
8 F- w! E; g8 H0 y) aend: r2 b, Q6 H( p( v1 Y5 F

% G- @3 b" F) Bto update-global-reputation-list
% ~8 \" _* q5 z5 glet j 0
0 ~3 s8 B1 S+ nwhile[j < people]7 ?* m$ m: o+ v! z6 O/ ~# Z( F
[
* P( v- r1 U. P, {$ G% K) Z6 glet new 0
- H+ J) \( y2 h: G9 n- b;;
暂存新的一个全局声誉
! p0 {6 s/ [% K7 d8 Hlet i 0! ~8 U8 Q/ Q2 M# c- r( a
let sum-money 0% |4 Y1 G8 a/ _
let credibility-money 0$ j9 x( x3 a; f3 {
while [i < people]8 E4 y9 c& E7 A: Q1 q# e; B
[
; `5 P+ A* Z0 X5 c* A3 u$ L& c0 ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ {9 Y; E& v- S4 V' aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ H9 Q" Q' r4 I/ V2 W  F2 d, m( @set i (i + 1)
5 i( \0 o1 Z' Y]
, ^& o# r- a0 y1 e1 glet k 0
7 v1 _' }$ `1 M: U9 K5 z2 Slet new1 0
  J' t4 x% m+ @6 ?while [k < people]  P/ E( p' D" _5 Y
[
7 ~7 i" y6 T4 d: @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)& ?( x5 f( c& I6 p
set k (k + 1)
) {( R2 Z! V: ?6 R$ i]
; B# W; S% W, g8 U% [7 o, d- pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- y, t. D* L" @& Eset global-reputation-list (replace-item j global-reputation-list new)
& c! Z- x( |& I$ [set j (j + 1)
3 |8 R0 c: o: [7 P" G- @]
5 m& I7 A( Y; d' d6 G1 kend
' U* w# H& \  g3 y
7 f) K0 E: f4 T1 R6 w  X( G/ N2 @3 C* Q$ ~1 c
& E8 {8 {4 [: Y5 M$ Z: J
to get-color
9 K6 V; T2 p% P0 q; T# \6 M1 N% B" o2 w: H0 M. O3 s
set color blue

4 r- o; r; t' C- l2 E+ Yend$ z7 l* f% Y8 ]9 ?% w, c/ V
5 e# S1 U3 k. S) E/ q7 y
to poll-class) ?4 V8 N, |4 A" d; M
end
" Q' f) G# Z' v7 n1 x
5 h# ]" r  k' j8 Q1 d+ Q6 }8 mto setup-plot1
; l1 T( v) ?* x* k4 W
$ s- Z, H; {7 I7 `; r- d+ l* Rset-current-plot "Trends-of-Local-reputation"
0 s. W0 p( L- b1 ^

7 _$ i. I8 v8 {* Z, Y# |set-plot-x-range 0 xmax

/ G! V% q, |" e
4 c* q+ l6 a$ F7 x" lset-plot-y-range 0.0 ymax

# v+ Z$ l7 X1 a5 d8 A+ q; ~2 D9 uend, V3 \) K. S$ D1 S; o9 H  t
* f2 R/ H2 M# Q  {( d+ |- J
to setup-plot2
' V+ A' t; v* F( N, g1 d  U$ L
! ~( v2 {% E& [! v- q7 d  H& ]/ nset-current-plot "Trends-of-global-reputation"
' w) \5 E; O) w# h2 n, I0 O% F! X- k

( g, {3 \2 H5 M  r, ^9 e. v$ Pset-plot-x-range 0 xmax
9 _" P# M) R' Z( U- J! V+ X( s

( s; e8 S, W  J' ?2 G$ x) Gset-plot-y-range 0.0 ymax

2 K3 C. d) L. V4 pend
8 l4 u( n$ l, K2 B
6 ^# o# {  a2 u( _2 Mto setup-plot3
. i8 Q6 @2 b' D- {5 G- o9 `
: ]7 ~2 l- Q. \4 H7 Nset-current-plot "Trends-of-credibility"
1 @/ A* K+ G% t( e8 ?3 _& w

/ v7 v0 A1 {/ Jset-plot-x-range 0 xmax

2 S! |+ w8 d6 R" U9 r/ h
3 e# Y. J; e4 h  Z7 Q" Gset-plot-y-range 0.0 ymax
0 N! d& A' w8 e# Z0 a/ D
end+ D2 s9 X! S. k
$ s( q/ Y: L( W
to do-plots
; I" V# V4 H8 l5 o2 @$ |+ E+ H: Uset-current-plot "Trends-of-Local-reputation"6 k6 f7 K* ]( m% l
set-current-plot-pen "Honest service"
4 R& _4 W9 E5 N4 g' ?. Send' ^) b. k. L; w" H
) p. c- H" p" Y+ [" a
[ 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.! M6 C& u9 I" S, h3 ~
5 v1 }3 \* B% D: C8 a, W0 r' |
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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