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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 h: S' T5 m2 C2 }3 h# X: Fto do-business
" }9 }! y6 b; \! {8 r) i3 _ rt random 360
0 j3 w8 u- C$ F/ o  y fd 1
6 R5 O3 M6 v5 ?7 d- Z: l: Y4 r ifelse(other turtles-here != nobody)[
0 r; G- `! C* \; H$ Q   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.
+ q0 v" Z  m; s$ g0 @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. e/ M. `( I, [# i# I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: `% R! _0 C! m" ^   set [trade-record-one-len] of self length [trade-record-one] of self
2 z9 k6 c* J7 J8 L2 F) s1 ^; q; h1 o   set trade-record-current( list (timer) (random money-upper-limit))
6 l" h. Y& E; C6 k3 e6 f# S6 d' p# A% C  }- G. o: I% e; S0 h
问题的提示如下:
, f+ G+ A" H+ V2 l0 q$ G0 C4 z+ b2 H: H# M, W, m
error while turtle 50 running OF in procedure DO-BUSINESS
6 }5 k" V& [* n) ]6 g  called by procedure GO" v- d/ T' }% Q- g/ c. o( _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 M  U# F# Q/ U# n. A
(halted running of go)
, I4 V' n+ a% H% ~! L7 I" M0 T* u8 d: y. J1 p8 }- O; ~, O
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~~
: w& Q6 D: `0 ?' y' x8 V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
1 V6 z+ L# z9 W: V8 R1 q7 Q0 d6 sglobals[
& n9 z2 i5 B4 Qxmax6 m9 D' Y8 X, @/ |" w) I3 {
ymax: Y3 _% g" M7 \6 q) H
global-reputation-list1 F2 L( }3 s& \2 k( g: F
; z. ^, L. R  N3 Q
;;
每一个turtle的全局声誉都存在此LIST( t% m* \/ ]2 a" k0 G0 W
credibility-list( ^) K! H; E. ^: ]0 W
;;
每一个turtle的评价可信度/ \7 K: s) A* }) z$ C. i2 D
honest-service' q* u* _5 `" B
unhonest-service+ I9 b7 b' _" ^$ y' n
oscillation
% m2 u, k* [- ~* s2 N. R% B# R2 G$ Hrand-dynamic5 _9 r) T. w8 C8 F$ Q: {
]3 L2 ?% C8 A4 g) I4 |
" z# l/ r( @* ]+ X+ I- a. ~  X1 C
turtles-own[, @' ?! A4 I$ N1 Q. ]% l, s- j: ]
trade-record-all
$ q5 Z, o! \+ D# ]% Z' Y9 ]8 n;;a list of lists,
trade-record-one组成9 Q* u2 j$ z8 P0 _/ M
trade-record-one3 N1 V- ]9 S! Z: z4 C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& K" Y5 @. Y6 d$ D
& ]& y0 C/ g; u' f8 h' 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]]( T! c, m+ }- [- Z" 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]* \8 c3 x1 v  g/ h- v8 L: E6 U& G3 a
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
9 N, N! F- F" ?6 S# J8 [. rneighbor-total* r( T$ w8 r$ j
;;
记录该turtle的邻居节点的数目% k- e. L" v4 I0 T
trade-time, @# ^* W3 ]8 D  R- z  J* D
;;
当前发生交易的turtle的交易时间7 ?3 o: S- k  p5 {& M- [
appraise-give7 N9 m4 t! E/ a4 a: R
;;
当前发生交易时给出的评价
: V; ^5 P0 G* u% I7 wappraise-receive
+ U% |6 }- n9 g6 X' l- n+ Y( o1 K;;
当前发生交易时收到的评价' `7 K4 L. Z; B& e
appraise-time+ Z* ~' Y6 {5 {5 O! X
;;
当前发生交易时的评价时间/ d# o+ T# w1 v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) u/ i: W+ j; ?9 A# _
trade-times-total; i: g0 g1 P. P# f8 y6 l* S
;;
与当前turtle的交易总次数. \6 X: ?" G% s9 Z/ p' G" r
trade-money-total
( e. Y- ?" X5 K: p2 s6 x; ^& [" H;;
与当前turtle的交易总金额
8 l% J) e% W  h. }, P8 T5 elocal-reputation
  L6 }& d$ o8 n( Aglobal-reputation4 w3 n. l0 f! B' l2 \6 a/ f" i
credibility4 V* `: z) H9 C! r- v
;;
评价可信度,每次交易后都需要更新" J6 J  O2 v' ~$ P' d3 Z$ X
credibility-all
: B* G6 C4 K$ B. x;;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! _7 w* Z& z: t5 J

& `% x4 I; a" N1 W8 y;;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
# \8 I$ o- |: Scredibility-one+ k% P. C# p. c# F1 S% O
;;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
8 x7 X/ n8 d: ]$ |; i4 Iglobal-proportion' L( Z  |8 _# v; ^4 I/ Z4 r
customer
% Y4 P, ~8 _( j) V# R7 E" X" ccustomer-no. t  c% h5 \% M* K
trust-ok
3 j% A5 {3 Z3 j7 P! K5 Otrade-record-one-len;;trade-record-one的长度) [: O; z8 o3 z! A0 Y4 n; s& y
], V! p" F0 w" c: @- V
  ~* E. t7 z6 H
;;setup procedure
. W. E5 h3 ]7 i1 @: O" e3 @# [9 F. A
  K$ ]6 J9 ^4 Y" X) Yto setup+ J+ p' F4 V2 @: @* C- n- Y

0 R* L( \$ p+ v" fca

; l& G* h- Z7 T4 t* y. F6 T" F- Y
initialize-settings

, s) R: {5 o( c( W# a" `. M( H, T! Q" c
crt people [setup-turtles]
% q: _7 I3 x# V& d
; ~4 N. Z0 _  H" E* E/ _5 f
reset-timer
- [4 w) c3 u/ }# n% y
* V5 C3 ~/ I' n3 B# P
poll-class
# \/ \& _' J/ B+ ?1 q% a/ l

$ I4 }' G. P2 w$ k' f. U& |) R, \; ksetup-plots

, v& r+ C! X' B- D# p7 p1 T  Z! d- W* d) h1 P3 q
do-plots
# J8 V! ]' Z' W! E" Q; G
end& f' [1 _, E4 Q0 P0 W
" F9 z$ z- E8 h. l' v. r. N  b4 Z& M
to initialize-settings
  c$ Q) l: r0 s6 d" w% F6 r& U. ^& D; L0 k
set global-reputation-list []
3 |6 d8 t# q7 W! w9 C0 q! O! r
# u3 ]2 e3 d5 A
set credibility-list n-values people [0.5]

$ @5 v& X2 K3 }0 f+ E/ ^2 d2 m3 h& \* T+ v# q$ G3 |4 L/ |% B& L
set honest-service 0

7 a' I% z: k& U- B1 I, p' G9 B
  U9 A" J" A( w+ lset unhonest-service 0
$ u& q0 O0 {% P: A, T9 Y- {$ r6 ?0 i" x

* r: f, c- r0 H" N1 C3 zset oscillation 0
/ t% Z) h- e: e

  ?) Y6 a) N/ k2 c# Q2 S1 {set rand-dynamic 0
/ ~6 Z) a9 w0 O0 p* O
end" \( w2 c+ j% N! ~, |& K

( \! N4 g+ k- U; V) p0 a$ Nto setup-turtles
! \, e% R! `3 ~) gset shape "person"; r$ z9 N% }. E6 ]  i
setxy random-xcor random-ycor$ K# O! K) u" F- n: ?: U2 V, Q
set trade-record-one []9 h  z$ f+ Q. `0 j2 z9 m/ P, |; f, j

: l. B) [; M, Zset trade-record-all n-values people [(list (? + 1) 0 0)]
6 Z* h  y' P6 e0 W$ C* K. |
! j* }4 `: n( A6 t9 F# c, {
set trade-record-current []
! u% s% u6 B- }8 F, {  [0 lset credibility-receive []
" r2 Y. j$ i  H3 Bset local-reputation 0.5
  F& M: s' B9 R- E- l7 yset neighbor-total 0
0 ?9 e# E8 D% `+ g9 Pset trade-times-total 0
- r' ]0 i$ F' l; R2 h) vset trade-money-total 0, j+ {' I9 C- a4 S; G4 D! r- Z3 a
set customer nobody
3 _& h7 B; v1 kset credibility-all n-values people [creat-credibility]7 D/ H1 v/ J" [7 m# ]! C# r9 Z
set credibility n-values people [-1]$ c! x- B* @  ~) r
get-color0 k$ W; f; z4 Q( O4 h: A

# K& x6 R; f; R( G$ q9 K0 Dend
" S# A4 [8 r+ }( D
& h, @' [2 T' X2 X, ]3 Z- ~% Eto-report creat-credibility
: u8 X4 Y) X& I. w8 m/ ureport n-values people [0.5]
+ \" @6 x: p# X' H) u$ Rend
; w  W0 a$ Z2 x- S/ r8 \: K# ]# D1 N) t+ Q% w+ q+ [' M: X$ ]; R
to setup-plots7 e2 G0 s5 P2 }2 _7 _' T& t8 K
/ Z+ k6 t, z6 C: `6 `8 Y1 v
set xmax 30

# Q% |0 W/ i3 c- Z7 o# W# p$ z/ E2 r. u! {7 ?
set ymax 1.0

" h% ?6 b5 f- \0 D7 D* K
5 u# y+ q, F4 l6 {1 rclear-all-plots

2 A! R8 p+ N1 A) J3 ?- o. ~, m& {9 }- d: M4 s
setup-plot1
8 {' m6 J! P! u2 M7 n" h6 P
$ }- L1 F) b7 e) L# @0 J  K
setup-plot2
2 _$ Q+ G" H8 r: [- W) [
6 t* d! {( S% y/ T) b& w7 j( i
setup-plot3
3 H4 e! p" r/ @2 r* _
end
! m; y2 K, K, @* ?
' A: u, J7 |7 u) q;;run time procedures
3 X& Y$ e  p  t* a; L) A( V/ G' I( S% R! t$ m! ^
to go
3 ~3 i4 z8 y1 `' r, T
+ ?/ ^; ?, ^$ s( }( Kask turtles [do-business]

) X2 Z7 x. {+ |2 mend5 q. a4 E9 e  k  G0 K

  h0 I+ C7 G4 g: @: Gto do-business ) B1 l; r4 n: j# h. V& G
6 J6 o0 ^+ N5 P+ @& T4 ?! w

2 e3 }% G% G! P- d6 W! Krt random 360
. x7 j8 _5 S! R: `2 c# j' a. A
0 G/ n. E1 U$ \# ~8 E, U0 k
fd 1
  z  f9 v2 X0 x* P2 Y: S6 k
5 R1 A% l* U1 x
ifelse(other turtles-here != nobody)[

8 E% V' x& A" w
- b) f2 A7 u* n, @+ ~set customer one-of other turtles-here
+ f3 D/ W" |1 h% n2 B! [2 P
: r6 k% u: t' S5 X; Y' O
;; set [customer] of customer myself
4 f* A$ M* s' T7 H! I
! }- R1 O) Z1 W
set [trade-record-one] of self item (([who] of customer) - 1)2 V( ]2 @# W  f
[trade-record-all]of self
* d! B7 v' l, Y3 J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ g$ m/ G# z6 X( [7 I6 T1 u
0 w( {2 `% s4 L1 n" z/ W
set [trade-record-one] of customer item (([who] of self) - 1)
$ _; m7 @. C1 @" L/ I$ q0 U[trade-record-all]of customer
, ]6 [' `3 B+ y
4 I6 N  b  k( _) |, V' ^1 w
set [trade-record-one-len] of self length [trade-record-one] of self
' E. ^' T! A$ Y( O
5 f; z( j/ C4 ]8 D2 Q
set trade-record-current( list (timer) (random money-upper-limit))
; c0 p! G: _% ]3 _8 F: f) K5 n
4 H, {% R! U2 d9 W3 b" K. N2 w6 _% n
ask self [do-trust]5 ^& ^8 O3 g/ o0 l9 B+ s7 G
;;
先求ij的信任度
9 N$ l4 J: z7 m7 c! p9 k& K; @: D: X, T+ _  }5 W
if ([trust-ok] of self)6 I3 A2 f* Y2 T3 d8 A( F+ \& [
;;
根据ij的信任度来决定是否与j进行交易[
) r6 k$ {; ^+ Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 C1 F! a% y0 b$ R* s3 O( i4 S

+ D  d/ J3 M5 Z% w4 n[
% k$ T$ b( ?  N
& R+ P; @; A  {3 R( j1 C
do-trade
7 o1 ]& A+ ^- ^9 q% v2 U

# J% e2 K* @, f' bupdate-credibility-ijl
; y" n1 ^  J* |& g% I. [; G
, g4 m, U7 D2 x. e) O
update-credibility-list
. P3 F0 r$ j; E  t

% |# G) L# _* V8 j7 y/ g9 E* G( Y0 ]" ]
update-global-reputation-list

8 \5 h0 @) t+ C' n% h7 z2 M6 b( W
: A& Y: S5 ]& d- R/ [poll-class
9 E7 k. s1 H+ ~8 G  }
. W3 P8 {5 W. b7 J( ?
get-color
% a. g% q5 }8 m: i7 [$ I6 X% M

5 A; _! }/ J. }. q  h]]5 p6 Z. R& @' u9 q8 y+ p4 v

, J3 @! p& `9 J+ \' @+ ?;;
如果所得的信任度满足条件,则进行交易
3 z. i/ T9 T! N# N+ q1 j1 ?9 g1 L' A3 f" n/ U
[

: h" O. G2 @# m; Z; z5 V+ q' p: C
- A! P) Z2 B7 Krt random 360

8 [1 p; B* u, N3 p' `8 y6 ?
/ a% [& i: J/ i- P0 b; U3 zfd 1
- {5 M% G1 z' N! H

) p- W: ^3 H0 b( _( Z- x6 R]
2 z6 V* G, `2 n8 |

0 g# v% h' w6 }0 bend
2 m3 E; h* ^- c  R# \4 k  k. w2 q

2 Y4 ~2 v  Y  R9 }. X& ^to do-trust + ?. p( _, c( k- _7 Y! T- T/ N2 _. a
set trust-ok False
( P2 i$ y) }7 P$ x# z. S* H9 e! s0 E8 |, z; ?, E; P
: X5 h2 ?0 P1 Y: Z0 k( }. T0 ]
let max-trade-times 0% S3 M6 p. X! b" m$ M& `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" ?/ k# e# C: h- Nlet max-trade-money 0. ^5 N/ d. y% y. d
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 C" u  K5 ~2 W- O3 ^" ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). o4 u3 I! S* s. e% y
; t# D0 `) u' D' M7 r2 u! y9 z
' M1 ^+ H) ?, {+ l. g2 A
get-global-proportion
% g3 l; h3 g( q& |$ ilet trust-value
0 F% t4 y1 ~% Z0 m, \" Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* H) V7 O2 J4 M8 B5 e+ |" F
if(trust-value > trade-trust-value)
5 F) X, c' J7 q: Y% w[set trust-ok true]$ i/ Z4 I- g5 [  z. e
end
7 E+ L! M$ L) }6 p% X
7 N9 I" D+ N) q1 @to get-global-proportion
9 h  ]7 R1 d; W8 Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. }7 F. W4 N( K7 Y[set global-proportion 0]
: g5 f5 [2 m; M: `& p[let i 0/ {, e7 X& R! O2 C( q* z
let sum-money 0
+ V' K' @  ?* }: a" i1 P- cwhile[ i < people]$ q, Z: W2 y! P$ O0 F0 C
[4 J, B( }: A$ |8 k* D
if( length (item i+ w( a6 ^9 ]- A0 D/ e" Z6 q4 L
[trade-record-all] of customer) > 3 )
, p/ ~6 U0 w% Z& [$ g; L
[/ E3 W, }& ]4 C( D) {. u7 g* f. j: E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), x; M5 g/ V7 Z. z' a2 V3 ~
]# ~$ Y5 K# ]3 K  D! f+ B
]) q" G! d& u4 @' T
let j 0& H% q4 q# [4 B( A! |. C
let note 0" }* e/ P; k5 W) m$ Q
while[ j < people]
8 ]! k! w8 \: H5 Y[6 m, s$ C. u  o' f. X6 t
if( length (item i" R4 g6 Z4 }* n, t- w' F
[trade-record-all] of customer) > 3 )

: A, C% L; Y) s# m+ A2 L[
7 e, M; B+ @) ~. j. `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 g) j. o7 X" y& T6 u& @. t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 E& n" V; K# s% L' I, k- Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( X2 H, p$ ?3 e0 [, b* w4 d
]" q% w0 n6 j  V9 @
]
/ w5 a: _) S8 ?set global-proportion note
: F7 b5 u  o8 R! W1 X3 H6 M5 V]: n( D2 Y- E0 b' R- ^8 ~# d
end
6 m* n# o% w! y& G0 m
, c+ k( A% |( ito do-trade
( m$ o8 y6 ]6 R;;
这个过程实际上是给双方作出评价的过程
9 l5 r$ ?8 L0 Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( g' R, P$ q! L4 G: H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, j+ R& v& k( ^4 A
set trade-record-current lput(timer) trade-record-current
5 ~1 U% o! u" n) I+ C( H3 s;;
评价时间
0 l( n: r/ b1 a- p1 Oask myself [
# x* B$ d( D7 P- R  Supdate-local-reputation; M, ]) W5 ?' T# j! f
set trade-record-current lput([local-reputation] of myself) trade-record-current
) W4 k7 c' R2 s]$ z' E% g" A: H
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) F7 U, _% \7 r% Z0 H' Y% M* O
;;
将此次交易的记录加入到trade-record-one6 B! a2 f1 U; j# N. W. u( V
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ ?! c/ m3 ~, y7 F. G: j" w$ R7 J3 Blet note (item 2 trade-record-current )2 Z; v# J  ~; t- v8 ?8 y
set trade-record-current
5 Y+ d0 {( J9 Z9 [  ?1 I(replace-item 2 trade-record-current (item 3 trade-record-current))

7 ]/ m8 ]. F! |7 nset trade-record-current% y+ A0 ~5 `  C
(replace-item 3 trade-record-current note)
  o5 j& a' |' C7 K+ ^/ _0 a
6 v, |" C; i8 S5 G7 _+ M, J
% r0 T( A( j  A
ask customer [
( \' p) I  x, i, `7 [update-local-reputation  x. d5 b5 Y, t4 d. `6 E
set trade-record-current' |- i$ c- n3 w* c7 m8 E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 J; G" y& ^- e9 q2 a" B0 c) E8 {]- {. q7 C; e; @3 Q9 X* i& c

* L9 ~( Q# ]  U' H  ~0 [2 L

' p% N) _& d. v! Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& t  t# R) h; N) ^( m/ ?3 X4 n

0 ]( _; C7 Y: Z* v- yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! C: E# a0 G2 c9 L;;
将此次交易的记录加入到customertrade-record-all: l' h$ w; f2 o
end, J1 X; R; \# d  J, n

& ~" \$ h  g, d; G4 @; Gto update-local-reputation
9 q% n6 B' J8 \1 I% i, P* wset [trade-record-one-len] of myself length [trade-record-one] of myself! A. Y5 M3 ?" ?9 W0 U0 q, x0 S+ d
: d, U7 X0 \: t# z

0 T5 {6 Q. O" h) ^;;if [trade-record-one-len] of myself > 3
9 h8 \+ m) J/ W
update-neighbor-total5 Q0 K# s$ q: G; A# a
;;
更新邻居节点的数目,在此进行8 E3 T# Q, p( ?5 \
let i 3- b9 g- S9 k% |8 R
let sum-time 0- m) C$ k, x2 u9 Z6 w8 P3 s
while[i < [trade-record-one-len] of myself]
! _! t5 B$ d5 a' }, U$ B[. Z& Z. o) j' v6 q6 a7 _6 k5 [$ [
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& D/ v& }" i8 k7 X0 W- {8 H3 ~set i1 r8 ~8 Q2 E) w; T! F( C2 u
( i + 1)
/ N% g! {- S/ I+ Q
]
" j5 q( S% _! ~' C5 y* _3 ]5 Hlet j 3
; T- T) B8 y: o; rlet sum-money 0
. a1 h2 E3 v  mwhile[j < [trade-record-one-len] of myself]2 Y! F$ ]4 o2 l
[2 c( u& x" t9 [2 V8 c
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/ r% _' R' |& e+ ]: wset j
( e( j& ]. j  a: F( j + 1)
3 q" F' m# G4 S% J0 n
]0 V% d0 X0 k! p- z1 v7 ^
let k 36 a1 F  ^$ L/ K
let power 0( _4 s9 G9 i7 B+ c+ I% m
let local 0
8 t% R$ P4 [  ]+ H, V  ]$ `# a8 Uwhile [k <[trade-record-one-len] of myself]
$ R/ a: ]) B6 [3 l8 F[
7 R0 a/ [- i1 y: P) Mset 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) * H4 O# o- u; V: w" c, Z) `0 Z
set k (k + 1)
( n3 T  A& y- w, K]
& d. q8 O* G7 a6 Sset [local-reputation] of myself (local)" u: b& I8 ?% m6 ?- D. y5 U
end' B) W( l7 z& K, l+ ]+ P# U
' F2 P3 j- E/ r. A
to update-neighbor-total4 j, z) D' x( v3 ^3 E! ^# g( I

: ]; p5 C: {" N4 R$ ~2 ?: M% {3 iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 f3 r% X% Z9 L! J6 E0 q
4 S$ i0 W& a  j' Y4 a: \8 [
+ M5 t' V7 D' }! ~, R- v
end5 U9 ]5 P9 H$ V' t, ?& q( h2 K

5 b0 l1 l) ]' h% |( Eto update-credibility-ijl
& c7 _* a6 ?. W3 ]- X0 Y9 S- G8 l% C- n! I' ?1 T2 _) F1 v) {
;;
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。
3 I2 P; z8 s0 Plet l 04 W$ h$ _% j  _1 f2 |* e) y
while[ l < people ]
. v2 d- w) A0 {) m, a) c;;
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 |- o# Y" D9 X0 B  E' ^7 ^[
7 {" `; u- G% i4 j/ F% Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ q( Y5 n  n2 Q/ c+ ~8 K0 Aif (trade-record-one-j-l-len > 3)5 D. s2 ^  {7 j
[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
7 _, N5 j8 H2 H7 Glet i 3( I$ ?9 n- g/ [+ B
let sum-time 0
3 F5 f% N% @( X5 W4 {2 t9 owhile[i < trade-record-one-len]
) e0 \$ A; q9 d7 G( D4 q[1 P$ g5 o9 J0 x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* @0 Y  e- u7 ~* s! H
set i
( S8 d9 Z3 e7 `9 ^6 Y0 a) W( i + 1)

7 w: n2 {- l! |; Z1 p  y% a6 I]
, Z3 r' J6 ~! elet credibility-i-j-l 0
" Q# a" h# z* r1 ~8 o7 L9 n;;i
评价(jjl的评价)! \0 u# [; \" H3 J* L
let j 37 T2 G0 m( j- E5 H/ |
let k 45 w9 T) G" I7 p& A- r
while[j < trade-record-one-len]
# B( C3 R8 `4 A) ]' P2 @[
1 ?% J  f7 d' M4 i% ?# P3 Ywhile [((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+ C! E4 L! B1 e) P! d' T
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)7 ~4 r6 ]: M8 w4 P; x
set j
1 d5 s8 _% z8 \' h3 d: s9 F( j + 1)
0 B# T1 A% K% @# G+ c$ P
]9 F$ G9 x8 O; A$ S) N
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 ))
1 j4 l2 J  W$ E5 f0 C& d! k' h2 H! B
, V1 m! A4 V7 H1 R- H3 s; M1 @
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 w) s5 |( ]) F8 \% P& y
;;
及时更新il的评价质量的评价7 O) j- x2 P, g0 C- s! j& ?& q+ [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 V- r% o8 P) S7 B
set l (l + 1)) H, f- f6 N* ~7 }- E4 c3 {0 `
]
1 R) c4 y3 q8 U0 f3 Mend
3 l0 e: {1 |% _1 T- w4 k( K
* J/ \9 H5 @1 O+ g6 Jto update-credibility-list
& e# I7 [' G/ ~% Hlet i 0
" F: @% n" H! w# L7 N* X3 N  ^) vwhile[i < people]; Y1 g5 ?9 l! x; A  X& C
[
" ^- Q9 T  O& L. A0 Ilet j 0+ Q4 s. s& n2 i' ^/ e
let note 0( _8 \, e5 a* `& c# q% [; y: l8 Z) _
let k 0+ {( ^' s& J6 x& K4 D
;;
计作出过评价的邻居节点的数目
. D( |+ h% b( ^/ ^) S9 \8 _while[j < people]
7 H0 v5 Y( R% W7 c; b[; b- d3 \8 \$ U  K6 Z+ Y
if (item j( [credibility] of turtle (i + 1)) != -1)1 A* Z% o# }4 K$ V3 i/ [
;;
判断是否给本turtle的评价质量做出过评价的节点% V1 L, G' l4 ?+ V
[set note (note + item j ([credibility]of turtle (i + 1)))" P; t& j1 x; v' b) @
;;*(exp (-(people - 2)))/(people - 2))]
+ z; r' v3 N7 R, |$ h* z
set k (k + 1)& X) z4 T+ A4 g4 j
]9 [0 m5 t  ~3 j- \0 ?' M. m
set j (j + 1)) T# ~( G! Y8 \) K% I* d
]
2 a$ K' g- H+ {9 ^6 g/ _set note (note *(exp (- (1 / k)))/ k)
: _# w5 I+ j5 n) j) F( aset credibility-list (replace-item i credibility-list note)
. s8 L) a1 h2 W0 b' U) N! |' f& M# Fset i (i + 1)
; `' p& y  k$ |& O+ S' `6 b, h]' v$ Q. C' w' T5 u, B3 q9 V# J
end4 J% Z2 m1 T2 O- O! T1 _
( k& O7 V. j2 U) K" s* P& J
to update-global-reputation-list
) U$ l8 y+ p+ E: l+ r4 Nlet j 02 e7 I  i& A2 _4 G0 f3 T
while[j < people]& w, c# L  Y  ], H8 `7 x1 n5 }3 J2 q
[
1 o' k" y- K4 ~" s/ t7 g0 M' [5 Alet new 0
  J2 x7 f1 D. S/ |  s. \;;
暂存新的一个全局声誉" O: p$ A% N! v1 l$ X
let i 0( v' {& K. R4 L2 y$ ^! r
let sum-money 0
, l1 m2 O: W2 a% E3 @" k* Zlet credibility-money 0
# T7 M5 {+ `4 p* c9 S; Qwhile [i < people]
  Q, N: Q2 k6 T+ A5 [. M[
8 @' l4 i2 ?9 G' g8 jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 w- }& C# P1 q& r9 l5 l. oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( C7 K1 Z# e& \) Q
set i (i + 1)) x- |% I, n1 S5 m
]; R7 v6 `  P! L3 K9 w" Q
let k 0
' Z7 a) J3 s8 r* ^2 U2 \* ylet new1 0$ t/ O! \# ]! o  G+ |; i
while [k < people]
9 b: Y7 ^# D7 w[
: Y' \' D$ @1 p3 X- cset 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)) |7 N/ B+ F# X  X7 [4 N$ a
set k (k + 1)
3 r( O" `6 m4 s+ G. l3 R* G% N; a]3 W2 o7 V7 ^' B3 z3 w6 y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( A# K& m& z. |- R9 ~& Iset global-reputation-list (replace-item j global-reputation-list new)
4 H( r* e4 m! Jset j (j + 1)
4 L: o& n) K8 f% z( e]
, D; y# R1 m) O1 m% X+ y. fend
" B: m: k9 \! g' M* W- [& [. t  q8 r6 C$ A/ f

: R% J$ T+ u% B" @6 K' W2 u$ N2 L0 T3 R3 S; J
to get-color( T( }% \1 p' |% r# w. W, }4 M

/ x* A, ]0 e6 ^4 v0 T" _set color blue

& m! Z/ T4 K% q. nend$ F* `4 a; d8 l' G! M7 L8 X
6 w% c; y! ]" Q  P& ~1 K
to poll-class% V# ~* K5 v! d( t
end& C" X. ^& U0 ?* X

; Z6 {) g- q; Qto setup-plot1
. n8 g5 W4 x4 g4 j0 P% z5 T: P! y+ Z3 f; Y  I7 _4 t/ G
set-current-plot "Trends-of-Local-reputation"
+ R$ v, \( D' I
* W5 m6 {! L5 w) {$ Y2 O
set-plot-x-range 0 xmax

8 I2 l; W1 P) O" n  y5 a, ]
) r2 E( Q6 ~) Q# D" zset-plot-y-range 0.0 ymax
( w8 Y; E( v" X/ W5 x0 m
end
1 m7 T& W. J% M6 ?( j; U- M0 `
+ `. q2 q' J3 K2 |to setup-plot2
! m$ Y8 @5 h  r' o; k: ^+ B/ J0 y7 C, A* |/ g
set-current-plot "Trends-of-global-reputation"

6 X5 V3 W. \, s* y4 G5 E( D& G" j
, C$ U$ r/ y' ^7 \set-plot-x-range 0 xmax

, l. b: Q  \" W' K2 h( ?: G. p9 L! a
set-plot-y-range 0.0 ymax

# c* y/ T4 u; |( ^3 F% jend
* D, I2 y! k6 q6 Y! l" L& B! ?% c  K! B7 @0 j/ H: S$ r
to setup-plot38 }3 M0 _* g( P) Z* U, E0 J/ E

; Z7 H! h6 ?8 z$ P4 nset-current-plot "Trends-of-credibility"

1 Q4 t! {6 Y5 c( j& V; G' v( }: W4 o4 ?
set-plot-x-range 0 xmax
* m# ?- ?6 ^* P, [4 K1 o! z+ H$ v* B
. V8 v) k( K: F; M7 E2 U$ y/ q, H" t
set-plot-y-range 0.0 ymax

3 a5 F& l# `, ^, \2 }- r2 O. lend( `/ ^' s3 l/ G' x, M0 d

- N& l- X2 e' ?2 C6 t8 Z/ x( Qto do-plots" U! c: m: l# r( J
set-current-plot "Trends-of-Local-reputation"
* \- Q5 I; _( X0 dset-current-plot-pen "Honest service"
$ |2 z1 @* b9 lend, O/ S8 v3 g  A; Y2 d- M
; I0 ~  S0 o$ i) ^
[ 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.) v( q! M2 t4 k7 f& `, G0 Y
* g. \  U5 B* n! o
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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