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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:
: V- O7 O% a  h( R$ e/ v& x5 V, ]to do-business # j" r& z% X2 o
rt random 360
) J, P: }5 W6 `6 q0 U0 W fd 12 V& {9 O" N# D1 Y% z9 N$ O
ifelse(other turtles-here != nobody)[+ [3 i! M9 C6 }" c. ~' L2 i8 b
   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.9 Q# G  G& C" s; h& C! k! m; O. u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : Y; t9 o3 J- O) N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 s8 O4 i9 ~/ ]- }- c3 H5 D
   set [trade-record-one-len] of self length [trade-record-one] of self$ B( }; \: I. S
   set trade-record-current( list (timer) (random money-upper-limit))% D9 W& i, O% C1 l
# v2 T7 d4 H8 o9 ?. K! Q. q* w7 o
问题的提示如下:
" e) L/ Y5 P) I$ r0 }! _1 g# ^/ Z8 F
error while turtle 50 running OF in procedure DO-BUSINESS
% k& k2 ~( X: W+ R: z; Q+ K( j- \  called by procedure GO
. E; y- ^( I' g  Y  Q* P# [0 dOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 h8 U% W: _' ]7 W3 k
(halted running of go)5 {7 f3 |. ~# f/ `2 Z
! Z2 d3 y7 T  ?7 U( y$ z
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~~
7 j8 h* o2 I' j8 D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
4 s( ?& h- b) K! p, _' tglobals[
" q& o/ R3 G' g* w. vxmax
. m7 k, o3 ?5 G6 P) L7 Aymax
) _4 d9 c+ f' }global-reputation-list
6 Z7 p# c" S4 Y1 e3 S/ `/ U  O" @/ n' d  B) q- C0 Z( b
;;
每一个turtle的全局声誉都存在此LIST" T# {3 d% p6 C3 a% B
credibility-list
; l6 O$ S+ D& Y* K0 M;;
每一个turtle的评价可信度! A1 ]' H6 J" q
honest-service) T% t5 u! T, q
unhonest-service4 h3 K7 ^' y' \& \: P' e! B
oscillation
& t% r# q" I) @$ |7 wrand-dynamic
# c8 E1 j7 @9 Z! E1 e]: Y$ V4 U+ F1 D) V7 {
2 Z! k! h# T1 y2 r, q. I$ n
turtles-own[: G2 @' R- `7 G; x# a) ^
trade-record-all9 Z5 u* U' Z* h& d2 p
;;a list of lists,
trade-record-one组成
7 o2 O# i, p  }: dtrade-record-one
- F% F& K/ t4 L* t! o3 |% O;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ m: S, ?5 e+ }! J

8 V# D' o; ?# j- m2 B;;[
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]]
  ]8 s0 c$ X4 O8 F/ @' ^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]/ N" g- s8 X4 p+ S
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list9 @. ~, Y. }/ U# R6 I7 r
neighbor-total1 k( \+ d2 S9 h& C
;;
记录该turtle的邻居节点的数目
8 Q4 P6 T  j: B" R" l2 Ftrade-time" h: J% _; l% \' m8 r! V2 v, \
;;
当前发生交易的turtle的交易时间7 D% M; K# E% s1 ?/ g6 H& b0 m- c
appraise-give+ t3 ]; Q7 F/ R- o
;;
当前发生交易时给出的评价
. d& l" e) N0 Nappraise-receive
" R0 L- q4 S. a( b, e;;
当前发生交易时收到的评价
. W; h  {( E+ j, u9 happraise-time# r& q: e; `% {" s& O* a$ q
;;
当前发生交易时的评价时间: V1 }& }5 @1 q7 I8 z2 a% X# L9 z9 m7 r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 Q' N# ^# ?% j% Htrade-times-total
+ {" b2 p* F  ?;;
与当前turtle的交易总次数
/ x+ n9 z# w- I# T/ F" E: Ttrade-money-total2 l4 m$ v+ I( T( R: ^1 G
;;
与当前turtle的交易总金额
# T" O2 Q7 \! ?' A& @. Alocal-reputation- B' |' e  Z; h* Z  r+ E
global-reputation
& O3 l, d1 z% Dcredibility. o) Q2 C4 }0 T2 `
;;
评价可信度,每次交易后都需要更新! M; ]5 Q, Q# h! H, u3 t
credibility-all
2 S) {) |  |& c' ]; {& m;;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) c+ \; j, F; O0 J$ q! z
3 c. H$ J2 ~- a1 \3 r$ ^3 a3 m
;;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
( E% J2 m* Y$ G% z; Q% j! l7 Xcredibility-one% m) O) ~7 [# j
;;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
6 P: T1 B; J) }" A7 Iglobal-proportion1 P( U4 B7 b1 |; _  Q
customer/ z0 M4 @+ t8 b; p! y5 r
customer-no
3 D( L8 E( w5 E) t/ U/ Btrust-ok; R  k5 \1 T5 {, M% C0 o. D& }
trade-record-one-len;;trade-record-one的长度
- U; H9 U; ^  @8 i0 k]
1 Q; M3 S& e1 o. ~6 E# g
7 Y$ @) s! l8 Z0 ]4 I" H;;setup procedure7 R5 K! a- |2 b5 d; t

8 m+ `! t% P1 E$ j7 _8 X& sto setup& v$ D( Q: H% R& G8 q

" k, x' |2 |8 J: `ca
/ [+ \+ U' J+ c( y

* L; b- C0 H, K6 e6 Uinitialize-settings
' S- \  s' ~# Y8 I. P+ @5 H- b" V2 r
1 q8 j# Y' P+ [3 e# L
crt people [setup-turtles]
2 b4 o! l- O( M" U6 @& N
, h% f* G/ B+ w2 V
reset-timer

1 c" W0 a1 @* z0 ]2 n7 N: ~" y( T! h! L  ?& w
poll-class

, B3 I$ P& o9 @; O
& I( h; w' U8 {5 L8 H4 T- rsetup-plots
. _0 X4 L# D* b5 T. A  q
9 M* z1 j2 F& ]. q
do-plots

9 q; d8 A6 z( ^; m. u: Wend0 s5 P3 P4 X+ u! g8 |
( x) z% n/ F" p# |
to initialize-settings
7 U1 Z5 P: b" D- z2 j5 g2 ?
* z# w# U7 n, @+ e6 _# c5 hset global-reputation-list []
0 V# F. w0 F, Z8 ?9 X2 ]
2 ~+ r* i* s3 U+ c
set credibility-list n-values people [0.5]

+ W$ \6 |/ k# e
1 x9 h9 F* l+ T  B, pset honest-service 0
# |( C  Y  D6 T$ j% D
$ s3 r' t' F6 q, s5 S2 d
set unhonest-service 0

9 \1 w( e) u- m! c+ R( r5 w0 p$ B5 ^
set oscillation 0
/ `/ |3 M% _2 c! l8 `- k

5 c/ E  L% {: g: ]2 ]set rand-dynamic 0
/ `! Z0 z+ n. i
end. O/ E' E$ Q- G2 A, I: y" X: d
% a; W5 e+ j- x' ~; Z
to setup-turtles
* r1 O  i' s% r3 w7 Dset shape "person"
2 \" H6 p1 {# U9 R# h! S$ p6 Ysetxy random-xcor random-ycor
  A/ r% N& O  ]- z9 b" [$ lset trade-record-one []  ]6 a- L$ Z, Z/ M  Q$ L

- i' S' r, {' lset trade-record-all n-values people [(list (? + 1) 0 0)]
  ], C- D3 |5 v+ ]
9 k+ A/ O, Y+ }4 t- A0 b6 E
set trade-record-current []
' U* U9 i- {) Q/ q  n; j" ?; E3 Mset credibility-receive []8 j/ P# J: `( ?1 M0 a) Q7 n
set local-reputation 0.5
# `7 I7 ^1 E- n; u- Q) _set neighbor-total 07 z! X6 s& J, Z1 }
set trade-times-total 0
# v9 [+ [( }2 w7 Z- i" C% |; Qset trade-money-total 0
/ U0 G7 v9 U0 `. D8 R  oset customer nobody
/ `* K& s: Q3 B; Jset credibility-all n-values people [creat-credibility]
7 ]2 R. Y: U0 q$ ?; j  w3 ?) p5 t8 cset credibility n-values people [-1]  U- ^3 o1 |- y3 j! J  Y
get-color( z  w. f/ f& \" l9 U6 D8 V& Y6 f- A

$ E- T6 k+ m2 O; v, U# ]$ \6 @end  P2 Q! U/ o: ^8 M( p7 v' x- R

- _- A3 ~  U2 H  R2 C  u; o% f7 X4 oto-report creat-credibility
) Y9 O1 F( S! p. x' wreport n-values people [0.5]
/ {" x; l6 I* Y+ M. R+ M4 `end6 ~3 S( Y* S$ ^* n3 V
( g; O6 ]- K5 I8 f
to setup-plots
  f8 v* f3 Y7 U! e& {
1 V& S- ^4 G( I" t+ Sset xmax 30
4 N) o- y5 a' M' W: r2 q# Q
! C. ?0 l! u: _5 R$ I* T
set ymax 1.0
: m) V3 @  t+ @0 f: f5 F5 L
) g7 ^& v/ W& {% k9 @" P
clear-all-plots

. a( P. d) P' t4 L* A% u. r0 D# o- b. H7 W/ i. ?( }# h0 h+ _
setup-plot1

' I9 o! P& N; V+ n4 a1 B
3 M3 E9 N, s# P4 D4 B4 i. Bsetup-plot2

2 |- w; ]- z' n9 r0 _) o$ H  h: A" o; E
setup-plot3
0 Q" f9 ?1 t' H# Q( W1 Z# H' {- V0 A
end7 V4 b: G3 P: @* p6 y: r: v

8 l" ]  W) O! A8 R* t% h) V* L;;run time procedures2 o% D! I$ n# h
4 }: a- i" z$ O1 b! g/ J; z& O
to go/ _  m* ?$ M7 N; f$ C' |

' f4 Q3 X6 S3 Q# Xask turtles [do-business]

4 J& `: n7 C8 p. H4 nend
& h8 t7 J9 E7 v8 U) J8 f
0 H+ J- B; [7 x7 P% H8 Cto do-business
4 O) D6 Z4 p* {! X4 x  R

( [1 v" W  a* N2 g7 x  r; K6 g$ O& A- M4 y
rt random 360

! X) a: s4 e* a) n1 |/ r: S; J* B+ S6 F8 I( A
fd 1

" c! n6 F3 z5 U! M
+ i) c/ w, i0 f5 z7 Z: o) zifelse(other turtles-here != nobody)[

. Z8 X/ |+ S! ?" j  I( X
" K. I4 R+ W' g+ qset customer one-of other turtles-here
/ u4 w2 l" h. z# ^% c9 Q/ \6 b: c: w
7 ]0 c; M7 L: V" K
;; set [customer] of customer myself

/ O7 v: z7 W$ y6 Q8 U! f
; u  N5 w/ a; C- Jset [trade-record-one] of self item (([who] of customer) - 1)2 s+ r0 t1 a& L2 {
[trade-record-all]of self* R5 T) M; w3 E+ Q( E( I
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 k6 ?+ }' [, V  D. n# q& o

- L, n3 M% }' }/ h$ R2 ~6 ]set [trade-record-one] of customer item (([who] of self) - 1)
5 j/ b& Y; R. f" ]! v. \9 U. b4 G[trade-record-all]of customer

% l& i* F2 F4 v1 N$ {" [) b. ~, B) Q7 w, Z+ w8 {
set [trade-record-one-len] of self length [trade-record-one] of self
/ w  X; ~" S$ j4 [# I7 D1 Y, }; k

- v( u6 j7 c8 \# N# t% v" {! Lset trade-record-current( list (timer) (random money-upper-limit))
" a. Q+ I) Q/ t6 g- ?
2 N  r4 Q. g+ w. M% T: [
ask self [do-trust]2 o/ y/ H- W5 v6 f9 S0 F3 K5 n
;;
先求ij的信任度% }0 @6 j: E1 l! y+ M3 W
3 Q' O& T4 h1 x" G% D
if ([trust-ok] of self)
. V% r1 F2 v4 q4 g$ Q6 I0 w- H8 t;;
根据ij的信任度来决定是否与j进行交易[
- s6 T, w$ |& B! B' Y7 cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" _# z' ?- Z2 I
. c5 i3 K- a3 K0 m. d$ H$ P) R[
9 u- R9 d. K% Y* n

+ x3 d9 k$ Y$ \0 l) Y3 Ddo-trade
& Y/ [* s( v' S/ }

. E6 A9 \; M) c3 x' e" {update-credibility-ijl

2 m5 x7 _( J: X+ a+ A1 x6 y0 i9 F; E1 y( \* H' k
update-credibility-list" L( N# d9 N  q$ q3 m8 E; {
% y8 x2 O' V7 @% j
% m* `! P/ {+ P* J! w
update-global-reputation-list

( p* q/ e' s/ c% G5 p' y/ ^( w
8 Y2 A7 ~$ J3 S: b* ^# Qpoll-class

6 E% B9 M4 V# L/ s% ^. y! S3 \5 z% M, r% b: h+ {9 x! \
get-color
- l# F$ ~8 ]- Y9 p, Q. f  S& g+ ]
* h: {5 T) a9 j* F, R2 j
]]
- ^  |4 T$ g3 c; {  o  c4 [# J
; z/ c7 P7 @) b;;
如果所得的信任度满足条件,则进行交易
" ^; g4 b! K, Y* p* C, u% X3 _' J* j! R+ T# v) i4 \
[
* @, c9 Z! G1 q# f- ?* D/ z1 A
) {: u' p- h. {8 b" x
rt random 360

  w! U* f" ~# \+ p; a
2 w* E. G7 Q) o6 P1 ffd 1
: L/ T" [0 K) g) k' k, \

6 L4 Y+ W+ z0 k& }]
7 J( q# l$ a/ s  S, ]- M) C9 L) A

% j6 G" b3 q) ]" p+ P2 P5 h. [end

& e5 f1 j0 T; V; ?7 b2 t% Y! c& u/ g
to do-trust
2 l; O& P- w. Q1 }5 ^! w/ `2 a. H# zset trust-ok False
* j  o4 V3 \. \% H+ x( {. ?! v/ |6 N- X/ {
. V1 q% Q  ~; V' }2 G
let max-trade-times 0
2 Y& X$ E; }4 t2 d: \foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 G( h! k! B! ]1 ~
let max-trade-money 0
! G! l6 f, B1 {  N& fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ s+ k, {! V2 N; T" slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% }! F; h* h. U6 w2 e* k- I5 C
0 [7 I" N3 I. i$ n+ V& m

/ ?8 g% u# E* P, d0 [$ dget-global-proportion( c% x7 p' T  \* B% }
let trust-value
. R0 v" G% G) ^0 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)

, F/ a, Z! M0 J' |& z1 e- i8 e) Rif(trust-value > trade-trust-value)
! {# K( i! S8 U. F8 s4 W' ]8 C[set trust-ok true], }- L( S. p0 l5 }) L4 ^
end
6 j' ~. l# K4 Z+ b, e7 d4 E* C  T% x/ |  Y1 K
to get-global-proportion
9 l( |- a0 S' ?' r) y: aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 N! z! |7 Y2 H* z
[set global-proportion 0]
1 c7 b; p1 q9 B5 }7 J[let i 0
7 a  h3 e" q9 `8 e5 d* L* _let sum-money 0" h* d4 `+ u& j9 u! P7 @' D
while[ i < people]
7 W7 h; q; i+ ]$ G[
& ]8 g" t6 {7 y9 o* w/ `5 tif( length (item i6 c% A! b, Z3 e
[trade-record-all] of customer) > 3 )

1 C3 f: S$ g3 l" Q7 o& s+ n$ T[7 u' f/ A$ D3 `, q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- j. _1 V- d% e/ y- U]
( W# E0 X) c  ^  j]* ]/ M- \1 x: _
let j 0
: B/ W6 l* a0 G+ G0 Flet note 0
7 J- Q; |7 W( J) h, Rwhile[ j < people]+ T' r* O" e% ~) M
[
6 h% x% u& H: b8 B% b# L0 mif( length (item i
% d; f. C6 W" R8 g  {9 I[trade-record-all] of customer) > 3 )

" d6 W& e0 i& l- S! s. w[
' f$ y) {2 J  z  `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); I5 s' a& G( V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: S! d% v' m" V& U5 W6 {0 T9 V7 R3 P4 y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  U% K* f! x  M/ N9 D% |1 P
]; F2 G5 W/ U! l5 g
]+ P3 C2 n1 w9 u: n+ ?8 s
set global-proportion note
. L- j. M' A5 S" G% r& r% E+ []* \# l$ y0 d& S# Y
end
' U2 f' K/ k& y# F
& a. x# S, x( @; O7 J3 |to do-trade
  n; e: ^+ _# r: P. e3 V;;
这个过程实际上是给双方作出评价的过程( n/ d1 A3 {0 i4 }" i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 @; |/ X! y3 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; P2 p& u& M  d$ N8 E
set trade-record-current lput(timer) trade-record-current
! Z/ m1 c) O$ W0 K  f: |;;
评价时间
, h& S4 ^5 h# b  r% D) E1 o) Vask myself [7 F% z  b6 G& {
update-local-reputation& q/ g" z3 Y6 S- X
set trade-record-current lput([local-reputation] of myself) trade-record-current5 H6 V" L7 N  f! f8 s1 ]: s/ s
]) b5 A+ Y/ I% q* F
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: Q1 x% B7 {- C" B8 u; d5 E. M;;
将此次交易的记录加入到trade-record-one
& H/ F+ `9 D% Z( `5 J' B: N! Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  J2 u" u& y5 [4 f. C0 W, hlet note (item 2 trade-record-current )' ^4 x% G9 A7 Z' R, B
set trade-record-current
  M% b% j/ `8 R  D(replace-item 2 trade-record-current (item 3 trade-record-current))
0 L' F$ r3 h* |# |. G' C; A2 v
set trade-record-current7 W; q& u7 B8 h; t+ S/ _, g
(replace-item 3 trade-record-current note)
& n# w$ [- [3 o- c/ o* h, r# x# F7 H2 I6 Y3 ]' Y9 i# W
  {  y" `2 z0 Z+ U5 b' K  `
ask customer [+ I3 W# d$ p, o0 T, E; B
update-local-reputation, X" R3 V- \  ~5 `0 D7 M$ s: K+ X
set trade-record-current3 o3 D) j2 Z5 P8 I# Q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 }' c* c- _! Q; H: q]
# |4 w% c* _  j/ R# D8 R2 _( i0 T1 ~% F6 h$ C' M
" S8 I3 W! [0 l' d% }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, \' I+ M& X; {5 _
* ]# a5 Q& t+ i
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), ^- S9 ?7 s% Z3 R
;;
将此次交易的记录加入到customertrade-record-all9 l* ~7 {$ W9 b0 I! q8 G
end
3 p7 Q7 d$ d3 i$ k& k* r6 ]! @% ~( w0 c# d) K
to update-local-reputation
$ w. {# D  H7 oset [trade-record-one-len] of myself length [trade-record-one] of myself
0 _+ @+ U/ c4 F+ A6 F5 ~1 n
; H. u  _; d8 i2 x, C
& z/ ^1 W9 u& {  j# A;;if [trade-record-one-len] of myself > 3
% i5 |0 S4 z, z; u0 U$ p
update-neighbor-total
- F! D! j5 A/ R5 b;;
更新邻居节点的数目,在此进行% k8 l" H. w8 ?, G4 p, _1 T
let i 3
1 T, f* L  O' p! j& olet sum-time 0' n1 r, W0 @% z6 L' q
while[i < [trade-record-one-len] of myself]0 ~$ C! e* i; c+ f
[
* d) n% u" J' y1 Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 H! Z5 o% ^. wset i1 }( W$ J* ?9 P% i* c
( i + 1)
9 ~, U8 j4 @5 j" c2 j7 G) p4 d
]
0 H9 Q% D9 y; }# e& |let j 3
& t6 l4 o4 T- u* L6 m9 ylet sum-money 0
! ?- d/ `- S7 K  V0 swhile[j < [trade-record-one-len] of myself]9 v, D7 ^& P6 O; w+ T
[9 Z% [, \; ~1 z8 E9 Q
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)- s# K/ S  l5 n1 ~
set j
2 A: e2 |0 _3 z& }4 s2 `" s9 G( j + 1)
8 P* C2 \# c' q- H' O1 [/ h* {3 `4 B
]$ h7 ~  e) a: L4 Y9 }: K( z
let k 3( z( |) ]( u2 Q3 L! D8 a
let power 0& \" Q& [- h' p3 _7 C% a
let local 0
8 U2 L5 o9 Z- t2 u0 Kwhile [k <[trade-record-one-len] of myself]
2 w. @& s$ y8 i[9 u6 x2 Q% l! {$ N, c
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+ Y* i' b8 }4 ^1 i0 J3 C  |
set k (k + 1)% C) ]- t6 |# P" U, V0 P. X+ k/ b
]4 `1 K' h! H- n0 V
set [local-reputation] of myself (local)" y5 [) ]# f' R, f
end& S. R" v5 E: \2 V7 Y/ i

; d  x2 S. |6 U3 U; a+ Kto update-neighbor-total
7 c- q7 J% N) S% |2 G$ {. @7 C: _4 e, I+ h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- b1 d! \+ l  q6 j, {
( ?/ ^( V4 w8 H, r5 ?

) p5 s# P7 }, m1 nend
$ ^' Q; ?1 ~4 A( ^5 ]
7 F5 G$ v4 ~. Q9 D9 c& v- hto update-credibility-ijl
6 i, {- A, i7 F$ Z- P$ e* g# @- u" M
;;
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。
# x$ R/ \1 @+ e; K5 E0 ~- alet l 0
# |/ P& }2 ]9 U9 v; l/ r+ Awhile[ l < people ]
+ n, D. N% O! Q' m) N7 e;;
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/ B# V) J! c# y
[
+ x3 e5 y& y! k5 q. a+ r: j. olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& ~2 B  E! J' h. G; a) lif (trade-record-one-j-l-len > 3)! q% I* {( p6 m' \; G
[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/ e. i8 o  G/ X
let i 3
. A9 K5 o: L' \let sum-time 00 X% f' ]3 w1 T2 ^: E, |  C
while[i < trade-record-one-len]( U$ E* m" z/ U+ F6 x; G
[
2 ]3 d( c8 {2 ~: H: J3 lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! D7 \$ P3 g  A# {; s+ jset i
2 E, R. X' g. ?0 M6 y( i + 1)
% c% i7 f/ B/ z$ g
]
7 j  P5 i1 F4 i! j) K/ x/ zlet credibility-i-j-l 0
$ x, |: [# g2 S;;i
评价(jjl的评价)
4 ^6 b, o: L: M" {+ Llet j 3
9 c" i7 Q$ I: b/ H: p. n6 elet k 4  z3 {2 U5 C  b) M2 t
while[j < trade-record-one-len]
0 E) [/ F5 ]4 O' A[
5 E% q* U6 P! k0 h- U; u  Xwhile [((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" l+ f2 K1 l2 R5 b5 }
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)
- w' J7 |3 S2 F6 {! dset j
. P  m1 C: ~5 |0 V, e; r( j + 1)
3 t- l+ B1 L, L5 A' ?
]
% S" x! ^/ A2 M8 p9 dset [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 ))  n" e) I& y0 ^2 n: u  a' z& L" I3 y
9 f4 \0 P' y3 {3 _, x

% u, ]& t& D, N9 J& |+ Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) d; |  b( y0 U$ ];;
及时更新il的评价质量的评价
. B( Z' `' V, ]3 S+ w/ _- Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ d. {& n% l* Z. x. `set l (l + 1)7 G% y& P4 M2 ~1 V
]2 ^* J$ ~! ?  w6 o. F
end* I" Y; D/ W5 M- n0 w
6 [" {: l7 J' D$ h! O  f0 `
to update-credibility-list) V) w( v7 ?! D) k+ A
let i 0
5 a+ a2 n" a; r. [# W. g5 Y- zwhile[i < people], b4 h1 h  N( m9 M8 P
[6 f% K+ S4 x2 o
let j 0
' m7 R: ]* e9 [% Q8 {let note 0
% y/ K4 G+ K( E( {+ E" Alet k 0
0 @: P" }) K; T; g;;
计作出过评价的邻居节点的数目: v( O+ m$ z+ _6 d3 F; t/ v6 u0 C
while[j < people]$ _$ j( `. M- ^& ^1 ]' k9 h: n1 z
[1 d# Z* _9 p0 d2 [
if (item j( [credibility] of turtle (i + 1)) != -1)- s/ @' }4 M& t! L, f8 u
;;
判断是否给本turtle的评价质量做出过评价的节点
* T7 p- o+ ~9 L- {[set note (note + item j ([credibility]of turtle (i + 1)))  D0 c* o3 Q( S8 q# o7 F1 h2 X
;;*(exp (-(people - 2)))/(people - 2))]

7 B9 N% r# Z8 f/ qset k (k + 1)
: b) c# L" N$ Z3 f0 x3 |" `, z]
8 N1 v% A* S4 Jset j (j + 1)5 z/ S3 l% i3 w$ L) ]
]9 |1 M! L) R" W# s6 U6 i
set note (note *(exp (- (1 / k)))/ k)  \. t0 q  f8 r6 _1 y% ?+ `
set credibility-list (replace-item i credibility-list note)
2 G% ~8 H. d+ i0 z6 p' [set i (i + 1)( k2 e% F8 m/ @7 u- {1 z' s
]
/ ?5 B, A5 W$ g) f7 C$ Iend
, E8 f' a$ P/ N8 \  s3 M! z
+ Y7 a9 o' z% Ato update-global-reputation-list
* D( h  F0 }' H4 T' Blet j 0+ B) t; T  C) l0 ^+ h
while[j < people]/ }! G" w* v7 Q4 w
[0 P+ x2 _7 Y+ F9 ]" e/ \
let new 0
; a- _5 R( n- i$ u;;
暂存新的一个全局声誉) ~2 C5 G% \( |8 k  ^
let i 08 U% x. i* t0 k+ s. [' B
let sum-money 0
! T/ v# i& l. Q* _7 o/ Q! zlet credibility-money 0
& Y, l/ B" Y( f+ X4 A' Iwhile [i < people]; x* S  t3 E: F" J7 x& i
[( X; D# [; B: }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 m" w: T) T  ?8 T% v) g. H. b5 b' d& x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 B# i8 w, P5 e4 d6 D- @2 fset i (i + 1)
8 N  `4 N5 r# K8 V/ v]$ t" T5 Z! J0 e" J4 |( j, V
let k 0  y) S! d% h+ U% H
let new1 0
* F6 x7 M$ U. W1 awhile [k < people]
0 q! V5 h9 s8 j- ^- v, o[9 u* W# m' y/ p5 a+ 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); a, E8 X& ~) B4 a2 a  l
set k (k + 1)7 [# V7 u+ V/ h
]
! t1 Z& G1 V8 X2 A7 [, E# s- dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 _" T1 }) H8 H
set global-reputation-list (replace-item j global-reputation-list new)
$ A9 \; Q4 S1 E! P. B# ~+ Rset j (j + 1)
5 V4 K. x2 N% T]
- d1 Z' P. a' V; X6 nend# m; Q/ S2 W( y$ s

$ A  ~# I4 F# p9 B8 ^  R' C  K$ `

. @6 S% X; o" Y  z: m; i% t0 d7 Nto get-color1 E" T$ f# b7 T9 t& }$ Z& @0 p, n

7 q. X0 y. ?' l' G; }5 l- Hset color blue
: U4 [4 M: T: X
end
2 ~2 a: n0 F- h8 Z+ n; O$ z' i4 P
to poll-class
% x' p3 L- n4 n  ^" P3 cend
9 ~1 {5 `) S! f2 Y0 |, E0 N
7 ?7 v, s: \& O4 xto setup-plot1
! V4 w. m! B9 `8 x/ d
3 ?8 D+ l: n+ Y- Q' X) eset-current-plot "Trends-of-Local-reputation"

6 h7 O# p. D5 I* g
5 i. v# I$ i$ ~set-plot-x-range 0 xmax
# a: u# b# [8 z4 d+ e6 f
# R5 u* \& o( ~9 S1 S; B
set-plot-y-range 0.0 ymax
% E2 l) d( Z, i) k# l
end
8 g7 d6 n. q6 e0 a2 {( N. o' J- H8 J
to setup-plot2
( J# h! G, _( i9 o6 n: _
4 b1 q! @0 i( oset-current-plot "Trends-of-global-reputation"
. L7 N( F6 L  j$ X$ x: J

8 y1 t7 {, V6 g) ^/ zset-plot-x-range 0 xmax

% r& [# f" G4 W: P8 l1 z7 g! X- F
" R& p8 D3 `# z) Q  s/ o' qset-plot-y-range 0.0 ymax

4 P" S' D# L  h& M5 p, aend
4 d5 t/ ]: f, N* F* a8 `9 K$ ?& a+ z: L# S, I
to setup-plot3
  W# B& ?7 H  w/ w7 t; |
2 F0 e. V9 {& Bset-current-plot "Trends-of-credibility"

. S3 g$ s* \# A9 k7 L/ \- R; J! \  @
2 N( M2 ?$ r" U0 W) e- Sset-plot-x-range 0 xmax
4 X1 x4 t& b/ z$ k; g
8 S- V9 U- v( c
set-plot-y-range 0.0 ymax

3 {' q* J6 G$ p2 n: Hend0 g  U, p; S9 w( _8 j/ f
9 m6 L! ?! M4 E! i/ O9 o
to do-plots
3 _5 q" V9 X9 @: X- U3 y& l) Bset-current-plot "Trends-of-Local-reputation"7 z  D; p& s! o+ e) Z' r* y' k
set-current-plot-pen "Honest service"
- S1 V! A' d5 i. p# Q% hend
& Z- m, i4 g$ v
7 }# p4 m( ]9 N! \* R* M( V[ 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.
! u0 i6 F) |( i0 E6 b# u3 i. u4 \4 f$ 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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