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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:& H" k1 U7 s1 U- u
to do-business
8 k, [, l3 o3 `8 }6 t rt random 360' q, l( |* a  g9 }
fd 1, m  {# P+ g3 I/ o% d" g: O
ifelse(other turtles-here != nobody)[' J6 J: m% P: r" v9 h
   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.
7 R+ v* E' {% C3 [% E7 k7 g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 [$ K) u5 T4 O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  B0 q0 b4 I; \$ o
   set [trade-record-one-len] of self length [trade-record-one] of self1 D2 V% \# P% y0 J+ a% N
   set trade-record-current( list (timer) (random money-upper-limit))
! i3 c4 V7 p" d. U$ k4 |- ^0 A/ k# F. t+ D' M1 \  E/ H
问题的提示如下:$ N# T( _! F, z9 q: B5 O3 k" t& U

* @( l" D1 z4 @$ {2 Y5 Uerror while turtle 50 running OF in procedure DO-BUSINESS0 \( U# `; `4 x  h: ^
  called by procedure GO2 x( F, ?% M0 @4 y0 Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* @: Z! l: x0 l/ K0 G4 T
(halted running of go)' A5 n' w. T+ g5 N4 K4 K

, f0 \0 y( S% A1 g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~~  D. [5 r* G. m1 y: \
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7 s+ G0 O0 x1 X, i5 E
globals[
& ]) w5 ?& _/ X& T$ G$ E( h- Dxmax
6 C9 b  r0 s" N- {8 d- Eymax7 C6 k; l1 |0 Q
global-reputation-list
% a# K5 i3 y3 O& V1 I3 t0 Q; N( l+ G; ?9 E7 Q  R3 u
;;
每一个turtle的全局声誉都存在此LIST
0 y, t- d+ u) g% d% p+ {0 C! Z, Zcredibility-list8 [6 R2 x3 w1 U# P2 T; d4 ~7 i, {
;;
每一个turtle的评价可信度7 o. [- {: T. a, j1 f" H3 Z9 O
honest-service) d( U: X% v- w; M9 q
unhonest-service
5 c' h' }( v5 D5 P+ t; e* m3 Hoscillation
: J0 {; s( B' u, R# g5 D2 erand-dynamic
7 O& e! I/ k8 d! ^, s]
( |7 `* [2 g5 E. |+ W& K
% V5 U5 Y2 |/ F* R7 k7 Hturtles-own[2 o6 [- R2 ?+ Y# }) @
trade-record-all
, d$ U1 h3 I2 J' Q$ g0 x# W8 ~;;a list of lists,
trade-record-one组成
# W+ a! r9 B; n; c0 jtrade-record-one2 ~6 M5 Y4 ?+ k/ ?7 x( I) x6 c' 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
" R' w# I$ c4 T' B
9 ^8 j  S: y, 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]]* ~/ z6 s! ^) i$ x, q
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]
# c: @$ Y( [0 @9 P6 mcredibility-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
# ^4 o9 f+ @+ vneighbor-total
8 n8 ^  I7 H' K* @- @7 J;;
记录该turtle的邻居节点的数目
* a+ w& q7 d& x8 m; k1 ~' `: Ytrade-time2 G: W! W5 S' z
;;
当前发生交易的turtle的交易时间
6 P$ d+ j4 j" H' Jappraise-give
& L) k/ v2 c: o  p9 y) I;;
当前发生交易时给出的评价
) U  L: b3 I$ ~0 h$ Q. _8 cappraise-receive
4 m# y4 R: z: n4 Y% H;;
当前发生交易时收到的评价, N9 m4 {( o# ]; f( C* u- p, w- W
appraise-time; h2 e8 |* }# X
;;
当前发生交易时的评价时间0 \, b8 c) W" t8 J  Y9 k: z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* U! ?: |8 L. ^" ytrade-times-total$ t6 P! t$ c" X% m" m; U9 A0 A
;;
与当前turtle的交易总次数
2 z2 P1 E5 w7 f: strade-money-total# r+ L. B! T  B+ v
;;
与当前turtle的交易总金额
) o% i- X3 a5 T) p4 D7 [local-reputation0 X& f6 K( J0 r" I9 P7 j
global-reputation
  y7 M  e- A( Z3 z( kcredibility: D6 J0 ^  C$ ?, P
;;
评价可信度,每次交易后都需要更新
1 U5 r4 D8 r# H# c9 Hcredibility-all% C. }) N6 H; m% r9 s5 n
;;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
! V9 n, g" C' o" o& J$ T2 k1 d6 e! C% `1 I7 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
; l0 W2 ]; M$ E. m- L' dcredibility-one- ^: ]* }# r! {8 u+ L
;;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
7 P# ~2 k( P% h( Lglobal-proportion
* m0 d2 U" z% R1 icustomer
* T1 v0 S/ \4 r0 j; Lcustomer-no( g9 Z0 |# Q. D# }) l
trust-ok
4 D3 P/ L9 f: u; \2 `trade-record-one-len;;trade-record-one的长度/ m3 ]* {0 Y7 X4 T# P8 z# L. n$ ~
]0 |- s+ }5 i/ Z. {, y! ^% }
) s6 X( z! I! l* W' e
;;setup procedure
3 f6 H, q( E4 L! T& V9 ~) P7 k0 t. }; t2 C5 L( t
to setup: j: l( k3 k) I  \; g( M; q
2 \0 B, H) r, s: R) M) P. n6 r  o
ca

: i% ~; c  m  o+ p. k  a% H2 U' I" G3 {: N1 N
initialize-settings

; ^3 b2 ^/ \4 s4 z3 z8 v* T) u9 B
/ \$ w" V/ Q4 xcrt people [setup-turtles]
1 n, }. n, r6 V5 N+ Z/ e" a" o

: _9 f9 G5 u. [: ?( p% i! treset-timer

4 Y0 z+ M- k$ h  C! n( W: ]4 h# _6 j& t8 a
poll-class
4 Y6 t3 y9 `: G+ r. I% M

$ x. D: e2 ~( v5 d! Osetup-plots

4 w9 L1 m) m- t- ]# y4 E! S  }+ C& \- b- ]3 H, S) f4 h) {
do-plots

. H7 E. v0 o& C9 ]. [1 Qend/ r1 I6 F8 R8 X5 l' j* K( v
6 D: X% p; u0 C2 n# G2 Y4 Y
to initialize-settings
1 P2 ~( \7 x" d7 o/ N; Y8 K7 G: p
set global-reputation-list []

( }3 i% t3 ~' N; i8 N) u) A; B* x' e/ Z
set credibility-list n-values people [0.5]
/ u% w1 P7 S- w  a. v3 `+ {

5 M; r# G# {4 j7 {6 Z( |set honest-service 0

9 L- A2 P+ \' w4 }4 z9 m, N, U7 z1 ^: p) [" Y
set unhonest-service 0

- c% F$ F, n: w: S$ U& ]" t/ x6 P! O  _' Q7 e
set oscillation 0

& K, V6 |' |) a/ p: G; E% U
* _& u2 ]. R/ j+ {- L, gset rand-dynamic 0

" w" b' _$ y) x: T4 |end# ^. B& Y0 i  f7 ?% U  I* M

( Q+ o$ _& n( c4 E# K  Uto setup-turtles ! E" I" C7 I6 v: K$ M
set shape "person". i9 U$ Q8 ^& X% D2 s4 {3 L* j
setxy random-xcor random-ycor
- l+ p) f* x8 n0 H* tset trade-record-one []
7 \( |# j; L& l
% V. I" q0 O* u" O! e
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 u, R- y+ L" ]! B5 d
% z" I/ a$ d) c9 x4 \& L- O
set trade-record-current []
+ e7 B: Q5 x5 j7 aset credibility-receive []
6 B# o; z& l# b0 h6 T* u! Xset local-reputation 0.5
- B& y! a6 S+ A! Hset neighbor-total 0
7 X, h: i! J4 _6 E& f: [# Kset trade-times-total 0& f% \# i5 m% W4 }
set trade-money-total 0" ^$ ]/ _2 l' w# P( \# a
set customer nobody
$ A: z' B9 `, t. a: `, c+ jset credibility-all n-values people [creat-credibility]
8 q6 @. ~& y! M$ yset credibility n-values people [-1]- J& T. }6 H: i
get-color$ L/ w' A8 v0 K' B1 P
* X  z2 ]( q. \+ K8 j" C- T9 w
end7 i" x$ K- D* T* j2 T4 P  q
  q3 ~* I; K/ E
to-report creat-credibility
$ x) B; y8 V9 b6 Sreport n-values people [0.5]. Y! B, m6 m7 }" U& E0 o! q' g9 Q- p
end+ s7 g- C. }: c4 `! M" Z) U0 D
8 w* _' F$ D# p9 ?. ~: Q6 S7 E
to setup-plots8 {) A5 e* N/ K# L

, j  q6 O, B/ C; g/ aset xmax 30

  {# w$ w6 W1 O" D% C) R& A, I1 }% U
1 s* W2 |$ s2 I6 n4 l1 P! Mset ymax 1.0

( T4 `8 v+ Y, z: D' j$ a2 ]" {) @) ?$ C  L
clear-all-plots
9 u4 s) e2 `; n1 r

. P1 W5 P7 o7 Ksetup-plot1
/ d0 |! \* g$ s6 P4 v# B$ i
6 }( V/ ?. x+ G( ^0 F
setup-plot2

/ V( s, P5 ~* \2 Q4 c( H8 o! |5 E. `) I6 h. c
setup-plot3
. E0 k. o# f6 D8 y! d% }
end. n) v9 h# ?' ?6 S' A% ^3 h

4 M( a5 x3 M5 w;;run time procedures2 g) {2 W1 x" a* U+ B& E+ b

' v4 o/ [- G4 e0 mto go
. u8 I; V3 `% _7 d/ ^0 T( q% A2 T  G8 q5 t9 [
ask turtles [do-business]
3 n$ a* D3 p- T3 g
end1 f& \) k( y- T' d4 C
3 X! k, _, `2 h/ Y) d9 b" f
to do-business 8 S/ k4 R4 i' d
+ Y' U- M$ c+ E: {# x8 x  K, o& m7 {

+ H$ ^' n5 Z* i1 |rt random 360

4 d' C6 Z0 k: ~$ _$ C2 I7 G6 Q7 n5 j
fd 1
6 |* @2 ^8 ^- h! g
# n& I3 c4 @( E; I
ifelse(other turtles-here != nobody)[

* q% B  _, l/ d# f5 ^) [. c, s# h% {
set customer one-of other turtles-here
& r. K8 L# M- D0 k8 _6 l

' K& U8 p$ l/ n3 \% C- T% e;; set [customer] of customer myself
! [5 w2 }  K0 L# ^# \

6 a5 R' t0 t8 ?4 z1 t" c6 |" Z9 wset [trade-record-one] of self item (([who] of customer) - 1)
1 T9 w+ W7 G" H9 p# L9 P, f) y[trade-record-all]of self7 V: F3 o" u# V& f4 {+ T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 _- n  T0 r- z# t. I& z  ^+ C) o9 P
' ^; P3 W' f2 L9 S$ Y7 oset [trade-record-one] of customer item (([who] of self) - 1)
5 y1 G. k: ^# T" O4 C& j. @[trade-record-all]of customer
2 N* {0 W( ?% o: l0 m
4 r. j8 N1 E% {- x4 I$ ^- G" F
set [trade-record-one-len] of self length [trade-record-one] of self
8 d& w; B  N, s( K3 {
1 W8 I4 A5 T) ~7 R9 l2 m# A
set trade-record-current( list (timer) (random money-upper-limit))
8 }( Z& `7 `$ _" i' I) f/ n4 ?$ @

) `& U# l1 x" M/ Q& R3 D; Sask self [do-trust]
) k  X) y+ h& r  }& s# f! A5 l- n( f;;
先求ij的信任度
! K+ V, ]& U0 a( Q2 |9 c
) C3 u+ A# c( Z9 c  o8 [if ([trust-ok] of self)" l! Q& V) E/ a. U
;;
根据ij的信任度来决定是否与j进行交易[+ d9 A+ a' d" E0 ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 R) |: c( a4 g1 G9 V9 c  L
' l" G1 M: Q1 }' G# e& ?; t. R
[
! ?& i8 O( R1 _: ?- @- v5 x

/ N1 t' o  N, S  C0 z. zdo-trade

) E0 {) Z: H. e
& Z& V5 t4 A  T( y% _: k) ?update-credibility-ijl

: I" U! J; p/ f7 ~" _( k4 w$ @
. f# l, R/ ^. A2 A- E" Kupdate-credibility-list0 \# u9 ~$ r) u: m

+ _5 L9 o$ A6 A' i3 z' N0 N! f
. |* I; l& c8 S3 _update-global-reputation-list
* Y1 ~" o$ M6 f" J- C! d

; L* q* [' x! c" J7 \" M& cpoll-class

% O2 b8 d: i  ^5 F2 L
8 M+ U3 s3 N3 x/ [0 Vget-color
: H3 ^1 N2 S5 @- X1 A
- `. ]" o7 A$ v' r
]]
! `7 K, c9 m% K( Y  a" S
. ~: _# N/ b; n) |: b- K  r# k;;
如果所得的信任度满足条件,则进行交易: [- U+ G( v) |6 P( c

/ y( I* O+ e. i! l4 Z0 q0 h7 R0 {+ g[
+ [( f1 p1 a( c, E4 d( [5 D, u
9 E3 {1 w  m( N) p
rt random 360
1 X  |" G/ `9 M" i

8 Y; K5 J7 a9 t% K/ L+ Yfd 1

6 l* v! S1 g0 U2 v5 e7 K/ w
' w- b" q% M4 S. w9 M+ t, }  J]

' z5 x2 g2 t- _) `: \
9 ?6 T3 J& ]! e* @6 Z5 q5 }# S$ gend

) k5 U7 l6 z" v' ?0 Z! r& @+ x) f: y
to do-trust
: }0 L; t% s; v  hset trust-ok False
5 x( z. Z* c8 K7 s5 @$ a! o1 h/ z' a% x9 w

: x2 m6 N3 B6 o8 S9 i* q& z) G  [: u' Flet max-trade-times 0
5 g# ?" Y7 r* Oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 R  T& k2 L5 e2 h3 dlet max-trade-money 0
* j1 K+ I/ f) i9 V' u% U) {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 x4 q& g: L/ p9 ]let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" _: S7 j! ?% K8 S
: ^- n$ W% g8 p, G1 L3 _! q

9 K# W2 y5 V1 P. Z1 \get-global-proportion
6 Z5 j9 p- N7 E9 l1 {/ A( `let trust-value
/ W/ {# n; J  o" ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

/ W2 A" ~. {6 ?3 O4 \if(trust-value > trade-trust-value)
# V  e0 A6 I9 J0 t2 d[set trust-ok true]/ n- I+ z/ z' B1 I5 O0 r/ V
end1 N3 R* Y/ N4 m, ^  o, O

: a# o* k+ O) G& d* Nto get-global-proportion4 e8 s: Q: g, u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 V& \4 M2 p8 n
[set global-proportion 0]
2 g: U, g+ B4 D0 I" s# N[let i 0
5 M+ |# I: ?' b) Clet sum-money 0
% E: u8 a8 \' d" G6 Vwhile[ i < people]1 [2 P9 i: ^* H0 J
[
5 g) |1 g- I  m& ]) F( aif( length (item i
8 h) Y( P1 S# m- a2 ]( n$ M[trade-record-all] of customer) > 3 )

: p" K, Z4 G5 u1 s; u% @2 j7 I[! J8 l8 Z. P. C
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 |! t1 r# F9 S. y/ M" c& x1 P9 F]
( s8 ^2 J& e* l. x9 z]' F! O/ z8 b  X% G& [
let j 0
* [! |( E% q, ]6 \7 ~7 n, T4 Mlet note 0
0 m3 s1 j, R- M3 jwhile[ j < people]7 P% U5 Z( `/ E; [% i" ~! W1 \
[7 _/ p4 R+ e# p  g+ f% f
if( length (item i
/ |" y6 v+ g. O7 ~$ s$ v/ j[trade-record-all] of customer) > 3 )

' v% [& k$ r: v; |$ d2 s[4 ?+ U5 ?7 T+ ]8 `# ~# r7 a
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 Q/ J2 g+ A' i* e% R  H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ d1 X! d( g* X7 n% K7 H8 [! t# _
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 c( J' g3 O! \8 h- ?! R" G) w]( [! R5 u  ^$ F3 @7 n5 n0 s
]
; M% {4 }9 c2 ^: k) Dset global-proportion note
* A+ n3 [/ }) s! \$ G6 V# `]
1 Q5 j! \, x. V( ^( v$ _3 S% d) cend
- y1 |1 n* e, A% q8 k
! T1 Y% p: O& [' |+ E. H& E7 f$ ^to do-trade
$ e: x' D( Y5 F;;
这个过程实际上是给双方作出评价的过程( V8 k" g. ~# Y, v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 c( w- N8 c4 Y/ y5 b/ m9 ^9 Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ T8 x! |2 J4 H) K6 sset trade-record-current lput(timer) trade-record-current" D5 C) {8 ~& S5 T
;;
评价时间/ }* K5 Q" O2 q$ U1 d; c- Y# l
ask myself [1 n4 g2 ^/ n& _7 C
update-local-reputation0 G' X" P" [1 d( `
set trade-record-current lput([local-reputation] of myself) trade-record-current) r. U) v0 j% ?' x+ t8 w
]
! ^/ q+ }6 H# ^9 ?/ n7 U1 T/ w* N+ \set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% N: r% e4 u2 M" Y( U5 d
;;
将此次交易的记录加入到trade-record-one
1 u# z* F4 r& z4 O* |8 bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( D: X# g9 m8 b5 T
let note (item 2 trade-record-current )
8 t' S9 x8 l2 ^! w+ T$ Aset trade-record-current/ ?0 ?$ X! I4 l' n. K" m  X
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ {  o" U1 u0 w0 vset trade-record-current- z7 v4 C  H' Y+ n* U
(replace-item 3 trade-record-current note)
) O: y5 L6 I# \, z0 L0 ~9 {; j; Z9 w
6 K# n( P  b$ x! F
ask customer [
/ B' }3 h$ s4 Eupdate-local-reputation
0 W6 l+ v  _- U. w2 hset trade-record-current
/ s, j; M) f0 l2 {6 f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( S5 d* a  b; s: h3 J# h% ?
]- ?" |$ g! q  G/ E/ f
: Z. c/ V) J: ^5 ^1 t2 ~
* V: Y6 ?) ?" Y% C: Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) i& p7 W8 s; a

  G5 g) g: X% R8 u% g2 xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 x* M! `' P- z5 G/ ~;;
将此次交易的记录加入到customertrade-record-all
$ D' s) U: _4 o. V: Yend8 n+ y0 F$ |# ?
% D7 m7 z: J/ J$ ?* F
to update-local-reputation
: `+ Q! }7 y, I! P1 m( r( vset [trade-record-one-len] of myself length [trade-record-one] of myself) L0 e# c, E; H3 E( F% ^" d/ q

* ~: ~* I" h4 H! T* ]
4 v7 X) d% u/ K9 N5 };;if [trade-record-one-len] of myself > 3
$ ^, t1 `1 K- F2 U3 H
update-neighbor-total8 r; r; s" s; \: @: S. ~
;;
更新邻居节点的数目,在此进行8 f1 x* [5 b! t  W, E8 @
let i 3! i4 [# |0 l+ X: p' r' h% T4 S4 J( Y
let sum-time 0
2 s6 }* C4 L- z  ~# kwhile[i < [trade-record-one-len] of myself]
! {1 G# _5 L; a, @  W  |[- Z9 k) h; a5 B. s  z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  ]2 O; K, F$ t- @
set i4 i, Z6 M, G8 P: B& j" a5 `- }
( i + 1)

1 m8 v! [/ [% o% u6 ?5 A2 `+ {]
8 W- `8 W2 r2 c4 Dlet j 3; z2 G1 l0 H- J3 G1 S
let sum-money 0
. q% K% }) v4 K' U1 y8 S7 B- f( }while[j < [trade-record-one-len] of myself]0 {9 q, V! C. t. a6 |8 _+ Q2 J+ ]) E
[
( A7 n1 {$ b  ?7 ]8 \$ 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)+ w' K; @/ F- |5 g) a' n$ [+ M# I
set j: F& Q  y9 r4 H
( j + 1)
( K6 O/ y% x/ z, W- i4 V
]
. q' z. p+ v, r( y. Llet k 3# F1 C$ w1 }$ Q/ \
let power 0
$ G$ w5 v$ T) O1 z6 P* h, Alet local 0
  N9 d8 v$ H6 C; `while [k <[trade-record-one-len] of myself]
( x5 [. {7 m/ E/ J4 M! J[0 Z! C" q( A; j; i: Q# L4 [
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) 0 R# k9 [( Z  |, G& N
set k (k + 1)
) {* i2 C$ o# P0 n% C/ E& ^6 Q]
* u3 I4 ^4 p, Y; l1 Iset [local-reputation] of myself (local)' g" ]! B- [& h! g4 |& Q; V
end' R' Z3 u; u% r* k) f

4 a. r; e  t" [# Ato update-neighbor-total: s  d/ r+ i' b& Q
* }+ m2 n+ V+ n  F, C: c
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 d' K- }) O, r% H1 M
" z' b, C+ N- a0 w. {

/ J/ G- X# T4 hend& W' M3 W6 c" \8 B$ Z

# o, e5 ^, y- W# u3 k' [# qto update-credibility-ijl
: _" q! D; r% _3 Y4 J
0 Y( v' R9 i" q- T;;
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。
0 L) b3 e+ q/ m( m6 a: llet l 00 M  O9 ]# Z  b6 Y) S( Z' F
while[ l < people ]0 ]& B1 z& j: _% f6 I
;;
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! g' v; z: }, M
[
; b. E; h! ]! q* D! K1 q" }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ ~- s8 {; F. P  F5 M) e# yif (trade-record-one-j-l-len > 3)
8 {+ x* M" j! d8 z+ f& V[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# L0 {7 ]: H3 ^
let i 3
! p4 G6 [) f- F. n/ F# Wlet sum-time 0
: n8 s* \, I' m$ f# S: {while[i < trade-record-one-len]& g; }/ R* V3 [7 M8 X' b5 H
[
, i' [- J4 K6 y* N$ S; B6 m9 Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ u$ D5 ?" {9 u! r2 yset i
& I% V2 {  N: y8 q( i + 1)

) g% K( H+ ^5 W6 o4 w" M1 V]
2 I" Z1 d* u6 j. [let credibility-i-j-l 0; L! y' ~) \- @) _' q; z0 t% [
;;i
评价(jjl的评价)
! H% z6 S( w3 D$ @: }let j 3
' w7 h0 a- m/ t& ]let k 4( s. w& ]8 P0 G5 L
while[j < trade-record-one-len]
% U# Q* j! X2 S6 L! E[! x3 C+ _) f! l
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9 ?$ m2 K1 H7 o$ O' f3 J- [
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)2 j, |! {: z9 q5 i. J6 u  X
set j2 V  D- c7 W% Z# J
( j + 1)
6 i/ e$ [0 D/ a8 H$ m
]
8 e0 s$ a- w' b% pset [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 ))% {1 V% I% }8 u
# R  K' u) L; e: G: g7 C
4 S; c% r! `# l
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 j, ^# }3 a% e: k& t# g( t;;
及时更新il的评价质量的评价
) H4 ?4 l- \. C5 g  Z/ b" fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 U9 A. ~9 X, y: M% n: U" m
set l (l + 1)
0 T' r+ ], D; R]
9 g2 f+ W+ B' eend
3 o  o4 x4 Q2 o8 Q0 `: T$ Q# O1 ]2 {/ L4 f
to update-credibility-list
+ ~0 W6 Q. F; P& Flet i 0
- Z7 j. ]+ U( P' m9 B' Nwhile[i < people]
; l- j9 c# m+ _+ N[
# W$ F2 J% a. W5 A2 Nlet j 0
& P0 r( U. w+ Q3 c  p2 Flet note 06 G  D$ B: F$ t. Q2 ~
let k 0( z- `" r" l' r$ l
;;
计作出过评价的邻居节点的数目
1 ?+ z0 h" c( @3 n  O. bwhile[j < people]
# n4 w) ~& d% c9 i+ z4 Q# ~* _! Z! l[
: \3 T- r- e$ z# S& Q$ @2 d; g% Sif (item j( [credibility] of turtle (i + 1)) != -1)9 S" k& P" g5 O: e, g' E4 q
;;
判断是否给本turtle的评价质量做出过评价的节点7 ]/ \' b) z7 C* a3 f! I: g7 y$ N9 a
[set note (note + item j ([credibility]of turtle (i + 1)))% e4 Y1 t; g& f8 O9 e8 `8 U
;;*(exp (-(people - 2)))/(people - 2))]

' C- T, s! ~+ y7 ^set k (k + 1)
7 u7 D: d# z# [1 N' ~]& P# U; I3 c/ q. V1 o  g3 _
set j (j + 1)
, w; k9 l/ w& M1 T) B- ?]
1 d4 d. |/ M! Eset note (note *(exp (- (1 / k)))/ k)6 I  J# i" O: Z3 S$ a4 ]! Q
set credibility-list (replace-item i credibility-list note)
/ e8 N" t8 {& [set i (i + 1)5 @# f$ ]9 ?1 J& c
]
( u6 |; e& C' Eend
' G! ]6 B# W6 M+ {# E8 K6 z1 P, l
to update-global-reputation-list( m: t5 ^7 S! y5 h7 `) k
let j 0
. R# b6 H+ ~9 I7 e' ^. _while[j < people]
; r  I- _0 Y5 @  s0 k& n[
9 l9 d$ H5 Q& \3 @" d: z  elet new 0' R6 O7 F# V9 K( `
;;
暂存新的一个全局声誉
' @/ y- f% e1 O# e1 Y- G2 _let i 0
$ Q: s* |" u, _, ]* e" Qlet sum-money 0
1 v1 F- s5 d4 Q' nlet credibility-money 0
1 g% t! ~+ C; y8 b2 Zwhile [i < people]
+ p% O; D$ j6 _5 y0 K% E2 l8 @[
3 P& I3 w. ~" x  F( _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* w" M: Y" K2 q  W2 x, t8 Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 H: z5 a8 A* Q# V
set i (i + 1), P8 I% l0 J- I
]) A3 p. h4 c/ `
let k 0' e' q9 M1 t6 ^, p& x/ J
let new1 02 O8 m9 g  e5 M
while [k < people]
" s4 l7 V8 S  i! S1 X, b[4 X4 ?8 C7 `2 k+ a. k9 h5 p
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)1 z: N: l: j/ A  L9 S8 J
set k (k + 1)' R3 V# ^( o1 `0 A0 H) Y4 _
]
5 N: m# W3 |) h8 |  v. w" tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; D" G: W2 R* Pset global-reputation-list (replace-item j global-reputation-list new)
$ u5 c7 A* T1 l# j* c" Uset j (j + 1). U' ^2 g9 `5 }# y
]' O; A! }8 f0 k, a
end
: w6 I$ Z3 r7 e9 Y4 u- F
4 @1 y" u' C8 R9 }6 ?; W4 b% {
# e! I" C5 T4 H2 q$ [! Y8 \
+ U% ]9 x) S$ A3 Oto get-color
& z* C% C& [0 o# _$ x% X9 X% ^" }
% F9 g; Y1 K1 P8 Nset color blue

" ^6 U# g4 e7 b& ?! c3 e; f) D6 Eend
2 B; ~% y6 ?' b4 }# o5 M$ q( _. X& M- D5 I% [, ?# t( k
to poll-class
5 b. W% k( `! b) v% J+ dend. G. W0 R7 p. j0 y3 I1 C
4 X. ]. P* Y5 Z' F% y1 {
to setup-plot1
. ?7 d2 ^0 t' [; W$ Q" W$ ^* I5 M. M3 r9 q0 a# c3 i
set-current-plot "Trends-of-Local-reputation"

# K3 X3 W: N2 |. o& k) f' u9 N- J. X% `; Y' {
set-plot-x-range 0 xmax

/ s- H2 f- E( F5 |* f  F2 F1 ~9 |" d# F
set-plot-y-range 0.0 ymax

: L0 Z, x0 y8 F& Nend
- X0 u  X' m) o- N; c  _
; b7 t  [* [* L3 v, _: h$ dto setup-plot2
" A9 H# H# b9 K5 c  p7 ~! S4 T' |; B* y0 U) [. f! }
set-current-plot "Trends-of-global-reputation"

! S4 \( k( C7 Z$ K8 y' i
! `( d& x! W7 u/ bset-plot-x-range 0 xmax
5 k$ ]0 P8 I) c  [4 S% N

, E1 L0 H" b0 X3 e/ Y+ f2 f' m5 f% ~set-plot-y-range 0.0 ymax
% u' M  o1 e* B2 l
end
3 n, O- l  I5 B. V
; T5 ]/ g' W1 V8 l# q- }to setup-plot3+ N: Z+ P; w, ~' Q! n& r( G
2 D% S! f0 g* q; f$ d
set-current-plot "Trends-of-credibility"

4 @7 }6 _6 J4 m' O2 x  q; l
. z" O/ B, K8 Pset-plot-x-range 0 xmax
3 L8 I( |3 A7 H

7 Z- T; P( n+ f8 x" V9 Jset-plot-y-range 0.0 ymax
, N3 Z! h) o5 a) M* x$ d$ @
end  B1 b5 `* M) L8 ~) v: L6 f, D( J2 W

9 E9 f9 g0 o& M! [9 mto do-plots  }" K. K/ x5 q) Q
set-current-plot "Trends-of-Local-reputation") H# o% K8 q, N3 A  ?0 z
set-current-plot-pen "Honest service"' e' q  Q. M2 @2 ~4 ]3 y
end
4 w# k" f4 u2 g' E8 n% ^& _: K8 S( M, U- G3 ?
[ 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.
. U% ]+ o) {6 k$ O+ s
/ H  B/ o1 X; 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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