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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:
6 v8 `3 \2 ?' r5 _to do-business
) x; B# l& p2 z. _: W, c7 k  t rt random 360& z5 U! i' q! d0 Y7 l, Y: M
fd 1* }' g; g$ e! Q
ifelse(other turtles-here != nobody)[
, g5 M' `" H+ }7 j   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.3 b/ a6 M: f0 Z( C5 Q0 ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 t  g' J5 E2 ?* d7 {% w5 k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) R5 h, s6 _% G# r- V& v7 K
   set [trade-record-one-len] of self length [trade-record-one] of self
8 r4 E, a# j6 e5 p. o( C% x   set trade-record-current( list (timer) (random money-upper-limit))
, Z* l2 [* q! f( w; m% g3 T: ]7 N7 \/ s8 d9 F4 J
问题的提示如下:
: U: G% S% Q7 a1 h. B3 v
+ L2 I$ m$ [$ Z$ b$ Serror while turtle 50 running OF in procedure DO-BUSINESS
+ g! _. z5 X/ V' B" _  called by procedure GO$ n' n' Q+ {/ W" }. ^; P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" M' a$ p! ]2 r' M+ O2 f( ~
(halted running of go)
, W$ ?4 k2 U& _- P
" J* e0 u! b1 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~~
4 J' X8 M+ F: q: 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
" n1 o, a8 r+ t4 _globals[
) ^0 ^- t  n2 ]4 s$ k$ i: @/ H; {xmax
- L1 Q' |/ I2 X# Q9 E- r7 K3 \ymax
* o. P% T9 Z2 @; {  ?4 w& w5 v# J- nglobal-reputation-list
& j- k# C! s1 k" U9 T0 q2 A8 c* e, Z5 e. T. o1 }
;;
每一个turtle的全局声誉都存在此LIST
, a' L( B. O. x: X+ N1 ~. Ncredibility-list% f; S# |" I" p' ]5 ^( h: W
;;
每一个turtle的评价可信度
) W8 X: z, Q1 u1 a* [+ Whonest-service# P: a; C; H$ e' O( _' u
unhonest-service+ A+ k' B+ d; M' o" F, ~# G
oscillation
  u  T, B( f/ R  Z3 P1 x' Hrand-dynamic
  D0 U8 V% T+ w' y1 ^- Y' A' I5 |" F]% p4 r' T' e2 i1 {$ d  i# m

% ]" A$ F: N% U7 }$ W8 Tturtles-own[
  Y. F  R& ^& W' b$ B' Q# Wtrade-record-all
5 j4 {& G8 l7 Q! ~3 `1 q4 q;;a list of lists,
trade-record-one组成: T- `) s* s+ H6 @9 ^
trade-record-one
! E/ X4 T. A$ K& c: O0 p# A;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 P8 ?" }9 C( q5 M2 h' u

6 _; \$ r/ L' T8 p;;[
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]]+ l+ n, q8 v. 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]
# g% o$ h/ d5 m* lcredibility-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list3 Z. z1 v( ~& _( e- O( l6 S
neighbor-total0 x1 s4 V0 Y* E
;;
记录该turtle的邻居节点的数目
+ I; ^1 u( m1 O2 E9 Q$ Jtrade-time; C6 s( T+ ?7 f  L
;;
当前发生交易的turtle的交易时间$ O! v+ ?, a8 I, ?2 B3 M8 |  Y6 k
appraise-give' ^/ n- k# ]' \5 l( k
;;
当前发生交易时给出的评价/ i3 S) g& \8 l& I& R5 {' Z
appraise-receive) r, k5 P. l/ ~, w# f
;;
当前发生交易时收到的评价: ]* e4 h# X- d6 b* s5 g2 A# b; v' I
appraise-time
* t' _; _& A; ?6 x! _: W;;
当前发生交易时的评价时间
) T1 a' w6 J' g8 F0 ?; Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) w8 `. E9 W$ N+ t7 Dtrade-times-total
$ R: K8 a0 U6 y( w6 O6 Z3 A3 F;;
与当前turtle的交易总次数8 M! c) c* c. v, S% y; t% \/ j
trade-money-total
7 f0 ^( d4 _5 x  F' p) X;;
与当前turtle的交易总金额) o7 L+ ]) A3 m* Z; v3 h. I
local-reputation% X7 o$ F# ]; M0 a) W8 z
global-reputation
8 E0 y+ r0 v$ k0 O( u$ Mcredibility
/ E% B5 l1 j1 E) r* d, r" W;;
评价可信度,每次交易后都需要更新8 ]+ l' O1 C1 A5 F- X( f& e
credibility-all7 T' y; R; s6 {. X" g  K; m1 B  Y4 r
;;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
6 |( r* Q2 b" S9 P$ {8 P8 N% V% Z" k% S
;;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# F2 }& `. x% I' C8 N; y
credibility-one
1 n  T- |0 m/ |, f! w0 M;;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people2 `8 R  \3 z/ x' y% N8 ?# R* r
global-proportion
  v. G  o# i5 X8 J; n* icustomer
1 J  p/ B6 p2 E4 m) b3 U5 Rcustomer-no
9 X% q5 e0 X6 gtrust-ok
7 {0 p$ s# {, G# s7 G+ A9 Wtrade-record-one-len;;trade-record-one的长度
) G/ w/ m" z% j' k]. y2 @$ ~7 v5 f; b% T9 }
6 X/ o" V! a' ^; j
;;setup procedure. b1 c" x0 ~/ V

5 F; q  o" a& \( O, _6 Q1 pto setup
, a, [( ]' I( y0 L
6 n$ E, y5 S' L0 x- ^ca

6 D' _8 E/ Q' p% _
' S  T- n4 ~" h. u. Ginitialize-settings

0 i# O- Y+ y1 O+ t$ r* g0 F  ^' t- `: L" T  U- h
crt people [setup-turtles]

& n7 j  ]9 k$ {8 h2 X5 H
/ o5 U+ Z% d/ E9 \6 \8 Areset-timer
& _2 R$ B1 A. \" X2 v
5 w3 s+ ?/ F& o' g8 l& }
poll-class

4 x; ?3 D; T5 M8 ]& [: m7 ?* K' g8 ^: I
setup-plots
, D- p/ J' L# G+ C8 Q

- ]- x! ?+ v; R. c* W- a1 [do-plots
' p4 r# I- N' S" y0 b& {2 K
end6 C7 M& b3 d: |' j
4 {( N* M: x5 S9 D  m* I5 y- B
to initialize-settings4 p  W" P" r3 d% U3 M
+ s5 ^8 F) g" C! B+ h- S
set global-reputation-list []

# _" B* x% S0 a: j+ f% u/ N+ Q: t; J2 f) c2 d% Y8 `( r7 N8 F! f
set credibility-list n-values people [0.5]

3 ^. F# S: w7 R/ b3 ~: ^! O: ^* u' c. ^, z
set honest-service 0
- }8 E; p* K) B  C
+ b, ]; ~0 ~- p+ C
set unhonest-service 0
: k7 }( K" s2 P. X. F& s
7 Y) ^  {% w% x( k
set oscillation 0
1 }9 _: W9 f7 i% t& E

* ?# Q; w% @' e1 H+ C0 {set rand-dynamic 0

$ `% U; v; \$ {% @: B( ]end
  ]6 Z* w% r% h  o$ r: t) e
1 @) ^. G, f# C8 l' _to setup-turtles
& _7 [7 u& D! X  _- c/ tset shape "person"
2 h  G4 r# q* {$ @; q% f1 zsetxy random-xcor random-ycor
5 u$ z" V3 Q" S; tset trade-record-one []% j- L) t: H# t! {3 }

4 q, u$ q7 \) X7 O9 aset trade-record-all n-values people [(list (? + 1) 0 0)]
0 z# }1 P5 h% t' v
+ V1 j0 |" I& \" {/ @$ k' v9 b
set trade-record-current []
; N! b8 q& V- l7 Lset credibility-receive []9 {8 \3 T: P) g% I" w
set local-reputation 0.5/ N) @, U6 T" M+ W$ I; ]! B0 P0 T
set neighbor-total 0
7 ]; D' W0 j. i& H) |% ~3 w; nset trade-times-total 0, C. k! b; b6 [+ b6 p$ w
set trade-money-total 04 N4 |. }# m) t, l$ L9 I
set customer nobody6 ?* c7 w  K' `) k+ z) P. Q
set credibility-all n-values people [creat-credibility]5 }4 ^8 f8 G# D: m
set credibility n-values people [-1]/ w. ~2 a3 H; I6 x4 p1 n9 L$ R5 b9 G
get-color
/ s' o8 t# F& V: |
* i4 ?. {4 E2 i6 T; a
end% r6 B; [% B& K/ a/ o+ P/ ^

3 Y3 |/ x# q( b/ \. N7 gto-report creat-credibility
1 L5 y2 @" h6 o6 y7 Q1 H& Y! treport n-values people [0.5]
- v$ g$ V9 i* ]) v( x# Rend3 W% D% U4 i7 ^' b9 k; y, C

! a1 x1 l- Y+ L; R7 ?% Cto setup-plots
7 ]! X+ N/ Z9 t9 e. i% u/ T0 B  _8 N+ e  f. V, Y; q3 e* C, T5 f
set xmax 30
/ i) e1 ]! ?) s: R4 \/ `
- g2 c4 Z! b1 P6 H$ `# s6 a
set ymax 1.0
9 E* v+ W& G1 _- s' M$ V* q0 y! ]

* s; h+ W" n& Q4 [( T) g9 g# p, lclear-all-plots

  G+ H  R4 g6 S* p2 K: @
: \% f; O. N) G, Y( X5 Isetup-plot1
% f3 m# F. R) n% r" a" A+ \

1 a+ W  I) ?3 D; [. I+ gsetup-plot2

- e; l  E" F! ^+ m& A, A3 ~, }0 E. {. }. ]/ ^$ d7 ]$ B2 e! _% ~
setup-plot3

% x% ~; C; C6 _# w: Q' mend, T6 L, O& N( e
  Q# g* i. l& S
;;run time procedures
: o5 b  y. T' S! Y$ U! ]2 b/ w: C
to go2 c7 v6 j4 S6 U2 j& ^) m/ Y
" j0 f) [" D  M
ask turtles [do-business]
& ?5 b) \+ Y3 T3 W3 ^
end# N% _! E: e& T
! B6 V8 n- o- i& W7 M# r9 f# S8 l
to do-business " W) `* Q, p! N7 A# K& M+ |
. c- H( }1 k4 W1 Y' Q$ J, {1 C
# L# h! ^/ g7 ^6 Z# X8 g
rt random 360

5 t" |4 W8 T! X; X; z7 m- x7 g+ r& ~8 F( `4 S8 s: W/ ^
fd 1

% H& M" a9 T1 F2 `  m! t! d
& ^3 W  ?: T$ |+ X9 [" Lifelse(other turtles-here != nobody)[

9 C) |: Q6 G- f$ @1 ?7 I+ ~, [+ k( E& c( a) x4 m
set customer one-of other turtles-here
0 {! N( ?7 S# `2 Z; b0 A
6 D7 b5 L& }0 o1 Z$ Q0 u9 A: f% X
;; set [customer] of customer myself

# _! G- {' w" ]- f- r% t  J6 V' F+ m/ {3 P+ u% \$ A# _' }8 k+ T1 i8 c
set [trade-record-one] of self item (([who] of customer) - 1)3 D2 j6 }8 M- `
[trade-record-all]of self
8 H/ F$ e5 [) Z: n; Y9 [  Q5 G8 T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 g1 o5 g  y, D! d  D- L4 J
9 u7 Q" r/ C2 \6 Zset [trade-record-one] of customer item (([who] of self) - 1): s# f& }. }; \" Z, G" \! x- P' D. D
[trade-record-all]of customer

, \# I2 U! @2 B' x: e6 i8 P- Z0 f- V6 j
set [trade-record-one-len] of self length [trade-record-one] of self

# }( u* ~+ ^' g9 s8 b- B3 ?# D' t7 g4 U: v
set trade-record-current( list (timer) (random money-upper-limit))

: X$ |* J0 u# L9 _3 i1 G( Q7 S8 i! d5 h; r% X% k. k
ask self [do-trust]
) u7 l6 x0 v4 n! T0 F/ ?;;
先求ij的信任度; i* O# m+ Z3 P+ K' L  I4 q
& s9 V1 G1 h3 l2 i
if ([trust-ok] of self)
) V+ ^. X- y4 l  h  p. w% ^& T, V2 d;;
根据ij的信任度来决定是否与j进行交易[
* \8 M. t' |+ p% T. Z9 C9 n( r' }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: e9 \% X& X0 i, m6 o# B) x0 Q4 }; ?# @( R7 G. @- v
[

* Q5 C- b6 I( G# C' i9 A7 _  G1 O+ [# {
do-trade
  p2 B1 E! U/ P+ s
# [' u3 e( \0 F& K
update-credibility-ijl
0 k: a8 u7 U. t1 ?  s4 i/ ]
6 O3 O. i# m( w& f
update-credibility-list
  S5 h( M. r/ ]; W7 Q/ N# W
; S5 G' A: B( G# ^; e+ t# H0 Z+ \! a5 Y. Z

% m) {0 s) ~$ I0 aupdate-global-reputation-list

0 K& Y- J$ A9 M% j" M' m
, ]) }) z9 [9 ?  ipoll-class
/ r% V! i7 a' J% o3 X0 V$ {/ R

. M! {5 L' G  _3 S8 h3 Xget-color

$ N8 C! @- ~+ @( O  _3 s6 w6 S! b2 u- r
]]
; G' G. ?9 {, a6 j3 J3 ?  c) O2 ~# n; p/ O! p$ N$ Q3 t; f" q0 A
;;
如果所得的信任度满足条件,则进行交易
1 U" B( z; _- R1 C/ M* n: B! w3 F: H- J2 C9 y
[

: g- h  W  [7 [
1 O! V! K6 A7 C9 ]4 {, M2 [rt random 360
0 G# `( s6 i: E% ]
& \  j! N  [) H  R, _+ K
fd 1
2 N6 p" `/ u9 s; [9 B& T$ Z: u

9 ?; T# Z/ w9 g0 ~. M) t]

, P/ e" S( {- Q' t
% U% ?2 ?2 E7 @$ m* v# U% o5 _end

; |& b' F8 U) z9 b, d, n: @0 V9 P- G2 x) j- r7 P8 a0 o+ P
to do-trust
- e- r. R9 j# u8 d& j/ l8 Jset trust-ok False: o8 [9 p! z' _  n  g- s" e( D

2 j) H4 |" Y( ]

3 Y; D$ S+ i3 @" T) olet max-trade-times 03 M" b; y/ B$ X/ B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 i) E8 X. }6 y+ _let max-trade-money 0: g1 w5 ^' z6 ^. p( U; C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. j# X" ~, R" w( `$ q" c$ f. c
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  K+ ^5 k; b0 M) W& C( R) c- \" q- I& n5 D$ F) x

; z" D8 p! b2 L0 J7 K7 p3 dget-global-proportion
) w9 ]& c: m8 O' ~0 F$ |, b- @  klet trust-value
8 U  Z% a$ X& [( |8 _6 A2 hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, K% F, h$ p  e6 I1 z5 S
if(trust-value > trade-trust-value)
0 C2 C% s& g. c! I: e& u4 p% t. `  N[set trust-ok true]
$ Y2 }. R/ Y, ~" O- d3 G# _end
8 M. P, B$ M/ e  l$ ?6 }. F( n
) c7 D1 o4 A* s* @to get-global-proportion' R- j" {- G, O/ S3 z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 M6 _& P3 b4 J[set global-proportion 0]
5 b& M. S  w& h9 b# o) X[let i 0
! k1 J+ ^+ x$ ylet sum-money 0# J' N7 c! x0 _4 y& k2 l5 N$ A
while[ i < people]. F6 a. R# z1 m/ f( H. d( ]) k2 |
[
& @* r, ~, `; I; k( [  Kif( length (item i, }. w: d2 K& C7 Y7 v+ a! m
[trade-record-all] of customer) > 3 )

6 @& z  P8 G* K[
( S$ i# C9 v* _5 Z. w0 \0 J! eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 T  t% d7 q" V* J: I
]( m9 G9 o, \" D( ^9 B9 D, [
]
) R* z) S  C) {+ u! Q/ ylet j 0/ T, ]) U: A4 r) ]% D
let note 0& {  o3 g% C' e7 `
while[ j < people]
% v( @; M* w8 n: j  J6 C# X+ D+ z/ ^[
/ K6 a8 l6 x/ H% [- \! i2 Aif( length (item i+ W4 x9 \; @4 Q" N0 |% n+ m/ p
[trade-record-all] of customer) > 3 )

* y$ [; p& p/ j  E  O[
2 O3 X0 w$ m0 n9 P: P2 }% @  v; Mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ x& n. `% ^, |8 a; X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* ?: j8 ^5 M& D/ H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ i3 `2 d- s$ f& X* L+ x; ^]. P# |& h- h5 ^1 ?/ l
]- ~/ M& p* W0 e$ n3 X5 z
set global-proportion note. ?+ l. v4 r  n5 L9 l4 D# Y
]
" _5 J5 Z0 c. Rend, [+ C- Q" _2 ~5 q# [

% W! M6 D6 G( n% i# b4 m# e. Zto do-trade1 S6 t! `- n$ s0 ?) X6 t
;;
这个过程实际上是给双方作出评价的过程
, N& R2 ?* L' w) z$ bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' x9 e9 [8 D6 F" v. s) {) ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) g1 U% I$ k7 t7 F- Yset trade-record-current lput(timer) trade-record-current, [- z0 ~1 X' D& v7 ]0 i6 p
;;
评价时间
+ k! v/ C5 [( P& Lask myself [, C- s9 ]% m, w6 Q
update-local-reputation
0 V* B& U' e2 [set trade-record-current lput([local-reputation] of myself) trade-record-current
: T, G5 ?( e; }2 U]* e/ V. {' Y+ A- i& \! Y* {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  c- F6 Z$ H0 U- |2 H;;
将此次交易的记录加入到trade-record-one0 h& {, K  ?: J1 b# W* N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! s. e. |( Z$ H( M8 o: p
let note (item 2 trade-record-current )7 r. s( c, _  K& b' R, p% r5 R* a
set trade-record-current
; M) A; Q% X1 q% W' g(replace-item 2 trade-record-current (item 3 trade-record-current))
8 t" b) g! z; x/ y
set trade-record-current
3 B4 R7 a& F- P(replace-item 3 trade-record-current note)
- J" Z9 }* C4 N- X
4 t& j% ~! A/ y& [% L0 L$ K

8 j! L, m  l- r! _4 oask customer [
6 N. q& K) d" z3 N: ?& Eupdate-local-reputation
9 f  s; D# e' ?! Iset trade-record-current( d+ ?* `; |6 }* K
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% B- Y4 M* Z3 `, u, @
]
, p% I3 z0 l$ _* x& B& l2 }9 l! u& K# T' x! u5 W

. P; Y# \: d! a6 S+ Z1 N' H- Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; o+ P! t4 n/ g7 }" O
: N; w- c8 i* ]% k: h0 h# R& x
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! Z0 D0 ]& y# w! i1 @
;;
将此次交易的记录加入到customertrade-record-all
- L& R( ~$ T8 N  S2 q8 ^$ t; Send
/ R% ~% U5 H* i0 \) M4 B" \" H4 g" |8 j# ~5 k( n  d
to update-local-reputation
" b9 q- g7 w# Hset [trade-record-one-len] of myself length [trade-record-one] of myself+ j" j3 }% h; ~4 T7 Y
5 U2 n5 B7 d+ u  N5 O! I* r. d+ o

% _. K" C. t( G;;if [trade-record-one-len] of myself > 3
  \9 U( O. \, X8 x. `, I
update-neighbor-total
5 u4 @/ i2 \  h  w;;
更新邻居节点的数目,在此进行
& A4 `4 j/ P' flet i 3
3 ]6 V, Y$ Z! R5 |2 q0 p" g1 j3 clet sum-time 0
4 d/ I5 q& x1 ?! u( k* s- W% mwhile[i < [trade-record-one-len] of myself]
, {' \! O6 [+ t& m/ {$ n) R0 w3 F: V& L[
/ @, o9 v* \8 b7 s" @0 H1 Tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 n) X( B9 v7 k, }  a' Pset i2 i% ]" p; D6 ?7 E1 f9 B
( i + 1)

, x# G& |& Z( T. Z; r5 `]
) O4 v5 U8 y$ Q! e" |  ]let j 3
! ~* V+ ?& a+ d. n7 slet sum-money 0
% Z7 c9 i, A4 X0 t0 N. Bwhile[j < [trade-record-one-len] of myself]4 ]1 g4 t5 B) a0 E% [
[( T6 F: ]! W) E9 ^3 e
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)# O+ C& h; a) C) n3 @5 r
set j
" c/ z# y- b6 Y6 e' D( j + 1)

+ V- V( R0 Z$ z) a+ s# X" J]
0 @4 @& {0 m, ]- p$ Z2 ~$ clet k 32 h: K; K) `5 G
let power 0
6 \4 J/ Y: [* q1 l) e$ Hlet local 0
6 }) L# J3 l3 a7 c7 j+ y- Wwhile [k <[trade-record-one-len] of myself]
" c6 s3 B( w5 ~1 ?, g) s+ e[
0 k: C7 }, t/ c( G7 Iset 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)
( f$ Q7 f2 d% Z/ x7 k( n* ~- Pset k (k + 1)
* \* o+ S( ?4 k7 p]
# T8 x8 f2 A- P5 nset [local-reputation] of myself (local)
6 h2 f  L4 P) h3 g2 |' o6 H( Lend4 V% n  ^1 e" e2 p) Q# \! I( r
) X- }) V5 S( T# M' E
to update-neighbor-total
" L1 }0 J4 P2 x% j* T) N
: S  S4 I5 T% R3 c6 E- ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 J. ~; a( I7 D1 ]; a
& D; s5 o4 ]& F) w" f! x

$ i. }& l6 F2 }  kend1 q0 v- {4 }3 @

" l9 R; ?" T0 h0 |& ]( cto update-credibility-ijl
! o& `8 K5 \4 S. C2 @0 f- m; [/ r# ?* w  p4 E& r9 k
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。2 _; _7 S+ h( o
let l 0  d: K. t* U7 `0 P- }, V
while[ l < people ]
' ]* K6 S4 f! o$ G1 s! U9 ~;;
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
4 K1 g* F6 G. K3 E3 @& {1 Z[
; W! `/ Z0 D- h" D( ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer); ^  `' k1 y' I6 ~
if (trade-record-one-j-l-len > 3)
% U! K) A: n3 r2 Y+ H( P8 M* q7 P[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-one7 n' x1 U' y, I  e# _& F
let i 3
) l3 H) L1 O( c3 }: y9 d: J$ Qlet sum-time 0
, `) E! ?8 b1 T4 j! K% cwhile[i < trade-record-one-len]
- k9 G! ~- F  h# f+ i3 E! G[$ o5 H  j2 e* `8 |- D/ l% ?! ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 L* M  }3 `% u6 Lset i
; o/ |% P  t# Y  }: L( i + 1)

0 U; h1 q% V/ m+ x) ^; M% ?]5 N+ t' E: d  u" I9 z
let credibility-i-j-l 08 F; ]5 N, t; K: ?5 U' x
;;i
评价(jjl的评价)3 Y2 C+ M1 [+ q) ^/ e5 r  s/ i
let j 3
- l; [! o5 F" C) e5 A5 C1 }let k 4
0 d  B% V5 G, P3 A) J/ Pwhile[j < trade-record-one-len]
7 B( M2 K% p- B' _0 A) g* ]7 _9 ~[! K, @" D9 H9 H. o
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5 B6 k$ ]( q$ T& |; n& v
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)
: H: K/ S* O' r2 b9 k: |& Jset j' @- }- M4 U+ k3 ^- j  M
( j + 1)
$ Z: H1 y2 b8 ]0 I( x/ T* ~9 k
], Q' B/ f1 o' n  t2 T
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 J. m) f% F4 J. m, o. d
, Q  n9 d! {8 a( `
$ E: a+ H- C) x- |2 D2 O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): l; a9 `7 B: V& l* G
;;
及时更新il的评价质量的评价$ B5 [- k& }7 w9 T& o" Y6 p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% G! ~# z9 B" }  q
set l (l + 1): C. s3 G$ p6 S' j. H* p& N
]8 i- O4 s+ Z# S# e# o# h5 T
end: b' n7 V9 F# O- J: v" w0 R6 b
9 C4 l0 k. ~+ I9 S8 i, w! S
to update-credibility-list% D8 s1 {' k; n( K4 ?- n$ [
let i 0
$ e5 i0 q0 a0 \2 e2 x1 t# m) `- Gwhile[i < people]
, ~$ m; y) v, O) O' C  y[- H  ~$ N2 Y6 S+ Z* Y0 w
let j 05 j0 p1 S6 m$ v* s* \1 Y
let note 0( \$ c3 @% ^$ h7 M0 D5 p5 [
let k 0
! G2 G/ h. @. T0 ]" E9 _;;
计作出过评价的邻居节点的数目
$ H( r9 ~7 n- \: O7 q) K& kwhile[j < people]
9 P' D% G" s" e. E# k[
, u( o1 e( O0 l( ^3 ?4 P: f. dif (item j( [credibility] of turtle (i + 1)) != -1). r3 g* L- n0 N. n& q4 n; s
;;
判断是否给本turtle的评价质量做出过评价的节点
& a3 f" j& W  X$ r. R[set note (note + item j ([credibility]of turtle (i + 1))): |7 J9 i' M/ a0 K1 Q
;;*(exp (-(people - 2)))/(people - 2))]

9 r# A2 R- f6 W" }4 X: _! j$ B4 mset k (k + 1): q$ ]5 _6 d- A8 l4 W! e1 d+ h
]
: T! f5 k0 V$ P& p9 ]  Iset j (j + 1)
3 @1 O" M# I; x]* ]+ B! j5 j. u. E) R8 Y7 a
set note (note *(exp (- (1 / k)))/ k)$ p" G* l/ l. G0 k0 p; v
set credibility-list (replace-item i credibility-list note)
8 b% X. z# u! |& _$ _set i (i + 1)
/ M3 R9 Z1 u7 c! h]9 V( f3 y+ X) G- g
end
; c; U) Q! c; a8 T2 ^5 R& k8 W8 r! [1 n; G
to update-global-reputation-list
0 ~) @! x$ U  f' H) vlet j 0: @/ T0 h1 _/ m( B: @; V6 O
while[j < people]
( L5 Q% ?' ^( j8 v7 N, l[4 ^$ c- E* ]6 Z5 p
let new 0
, j  ]$ D; G+ \5 @4 x1 J& V;;
暂存新的一个全局声誉
' l5 o  o1 h( O0 {- ylet i 0
+ q5 o5 n4 L0 c/ ?- clet sum-money 0! @+ z' T# C0 o% `
let credibility-money 0, l* P7 m9 t- p2 ~5 V. `
while [i < people]
( @+ \1 @$ z0 [0 E1 P7 Q0 x[8 T" t2 d+ ^9 T. s+ G
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 @2 _- H6 T! ^) a0 M3 Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! q6 i& q; Q. Vset i (i + 1)
0 g7 ^4 \0 u+ l4 G]7 V2 x: [( K% n: B9 e
let k 0
& y$ W! U! R* `8 Plet new1 0
6 {$ J: O, b+ _1 h0 ]while [k < people]% r3 E0 g2 y  f
[% o; a  \8 e+ n2 Y
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)
% d0 ]; B% e' \! e2 c4 nset k (k + 1)
! E$ S. p! q. ]. {( X: ]4 b]
/ [* \2 e7 ?6 ^: Wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % {7 j& u' ^5 Q+ s
set global-reputation-list (replace-item j global-reputation-list new)
( Z+ A. c4 R# I- s8 ~3 ?1 @set j (j + 1)
) n; L: Q& {0 I# ~# a# `. Y5 v- r) R+ ]]8 F% T1 `$ \' `  z0 O
end  x; M7 m! f$ `2 r% r. a2 L

# c4 y9 t* M  ?7 l& x0 [  \( X" J
9 |5 u; u5 `' x& u% M
- s* S& X3 L6 ]1 X" B4 C# ]. lto get-color* L8 |& S& b" n. c- N! F7 u) r
6 u4 T7 S; R/ W2 `( A$ u
set color blue
* D2 Q+ Q+ r$ \6 ?
end
/ N2 j1 q4 U) |7 J/ T# {4 S, Q7 w8 Y2 y) e: m5 n0 j
to poll-class
& T, x1 g! p$ J0 D! `end8 ]: Y" i$ q- y8 `

9 F( x6 ^( u( V% L  R! I% L2 l9 w, Xto setup-plot1
( h4 M+ J; Z3 n  S! z: B' {
6 w+ l( E8 u" S$ I* ]. I% \set-current-plot "Trends-of-Local-reputation"

  h2 l" W9 b9 b6 O# N: l1 w% k
$ T/ B: S# b* @8 \# P1 q1 \set-plot-x-range 0 xmax
4 M  q3 l+ v4 ~' u3 q# b

4 C# i7 i! }4 d2 _8 q* ?set-plot-y-range 0.0 ymax

( N" V+ D" F( a' mend
+ m3 F6 n8 |. b6 x5 d( L8 H9 u1 s' O) ]/ g( O# B. W
to setup-plot2
8 O8 }, S6 N7 h* T- a0 }% ?$ s& ]! @9 [" }- {2 n
set-current-plot "Trends-of-global-reputation"

1 B: U8 w; ~# h* `$ @; e( w, }
7 C; k. d' V5 y) g" {( Tset-plot-x-range 0 xmax
3 l. @% n% j/ C' i

$ E! R  z/ m9 a! q3 w/ g  Sset-plot-y-range 0.0 ymax
: h! @" k* M( w1 h, l
end! k' K2 u7 L/ @8 \2 B" J( n
5 z+ g1 w2 h  z3 n# m1 S; Z
to setup-plot3
0 I5 O4 Q+ u+ y, P9 J3 v4 C4 g& ~- x
set-current-plot "Trends-of-credibility"
: B, K( U' ?  p  E0 {3 m. J

+ g$ k) w; s, K1 W  J, fset-plot-x-range 0 xmax
) x8 T( y9 ]/ K; S+ t% L: O4 n
7 ~& r' \. H7 K1 E
set-plot-y-range 0.0 ymax
7 c6 K# _3 e0 m# `
end- _$ `  }! ?2 C: t9 ?

" Y" V. p0 f3 ]% p! _3 kto do-plots2 P+ D( c  Z2 l9 n) ?' R9 T; T' K) n: N
set-current-plot "Trends-of-Local-reputation"
8 d' R9 b" s' F9 sset-current-plot-pen "Honest service"$ L" ^# V5 L+ N# F
end
1 I! ^0 U% v* p) }6 g" t$ F) i' B+ u% S- V) |& N: T  Z
[ 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.
2 A$ E+ i$ \4 e1 l$ L6 @. k! {- G2 n# u* f! a% [: N5 _6 U
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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