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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:2 H4 w8 D) \- h) y% {/ j  y, Z
to do-business
3 X: m; Y  h0 T7 \: U/ G3 K rt random 360: c& B6 d0 d7 c( u
fd 1" H7 ^0 Y; N' k) g0 F! }% T' D- L
ifelse(other turtles-here != nobody)[
2 o1 F1 z8 e7 D: h* y, Q# L   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.
  U- }, |! @6 P7 \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ a6 Z, Q- C5 ~3 v' W' ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, f1 M7 y9 N7 O$ H' B   set [trade-record-one-len] of self length [trade-record-one] of self
0 W: _1 U' T1 c. P9 O# o3 \   set trade-record-current( list (timer) (random money-upper-limit))6 s) y7 v- U; F4 z1 P
6 g* K9 s* R% _! h" v
问题的提示如下:" J  ?6 |# y3 r- H

  T2 ~8 e: Q% A* lerror while turtle 50 running OF in procedure DO-BUSINESS
" H' C# S, s: V( a. H  called by procedure GO
/ y( B: r" W0 C8 j6 bOF expected input to be a turtle agentset or turtle but got NOBODY instead.: |) Y1 N+ h1 ~  g( n4 P# P. z; O
(halted running of go)/ k0 Y  G/ k, j$ f

& i, W* Z! w3 T4 q, P这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
$ k& c/ C; T3 R" J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8 _# H  h& [9 u$ A, s* I
globals[
6 f5 @$ d9 u: B% F& Kxmax
3 e, P3 e2 b# Y0 B6 P* R; j4 }8 I, Nymax
/ a& A3 b1 c0 X3 d  cglobal-reputation-list
7 M! c2 B% \4 s0 I. {- [2 w  k$ z2 G# p! S" L
;;
每一个turtle的全局声誉都存在此LIST7 _7 _5 B; A% Y" G  ]# X( q
credibility-list
! e. d' ~" Y, @4 O3 ^) x/ D2 V;;
每一个turtle的评价可信度) ]2 u. M- B& d, K
honest-service
% x9 U# k  ^2 k4 e8 d! p% xunhonest-service
: I) q$ O* {# h4 hoscillation
- P( \6 k# r% Grand-dynamic. O- L8 M' l. F4 H) z
]
: z% X- E% i: m, t% X. V
7 Z6 @. Y, b. Yturtles-own[( o# l5 `! b* p: _
trade-record-all
2 u' j+ j; y3 A1 B2 Y7 p;;a list of lists,
trade-record-one组成& k  c* b5 z, |9 |' M' n
trade-record-one' p7 Y$ m: m. e! k% Z7 J8 T5 t$ r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 n, L0 B& _8 r0 i& O% G7 e% |* J1 @5 s3 v" @
;;[
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]]
6 v# p& Z2 X2 J$ p* ftrade-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]
& [$ D& m9 M8 ?+ D/ N; Pcredibility-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; Z7 r. m  w; F1 B
neighbor-total
& M' n- V5 F" z4 |7 `;;
记录该turtle的邻居节点的数目! j  u) v. }" s
trade-time
1 N# g8 z+ o9 H. c6 F;;
当前发生交易的turtle的交易时间9 y* D# t" `8 c& E4 U$ O
appraise-give
2 k/ a6 i% V8 e;;
当前发生交易时给出的评价* H. a) O' [" F. B$ b1 x, B
appraise-receive* M- l; `+ C; V) x9 V! g
;;
当前发生交易时收到的评价: t' s6 j) Y  ]
appraise-time
/ t7 A3 z* J0 T3 Z3 P;;
当前发生交易时的评价时间4 q& k( v* b( N
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ J; V" g; E* B  v  ttrade-times-total! d& B" |$ ]2 [- z  H2 L/ x) N1 s. Z
;;
与当前turtle的交易总次数
* ~1 a8 g$ o! l" a7 ]' I0 ^% vtrade-money-total- I. a9 f) I+ c! [9 V
;;
与当前turtle的交易总金额
8 ~& V! b& y; ~7 `- z0 \local-reputation
- m0 k; M+ O# h- _global-reputation% Z! V% n, V' P2 ]0 H* X
credibility
0 c9 e" U4 N) `2 t. S;;
评价可信度,每次交易后都需要更新
; W3 i7 I' i9 o. z* J8 ccredibility-all2 P: r+ Y% r8 @* U
;;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: |/ o9 X' ]" d% F/ t. y5 i
$ c' z% J6 H) K1 P7 O6 U" F1 w
;;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( y& A' ]7 O0 j' V2 o4 t/ Y8 ?
credibility-one
  \1 x0 K1 S- F: i( o. x7 I4 E4 r;;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
$ t2 Q+ @; [! _8 uglobal-proportion, E: y4 d% g/ Y4 @  z
customer
( [9 r* v$ A  L& ?" h. Bcustomer-no
$ [- ^5 y( g4 S% Ztrust-ok
/ l: ^+ O' M  y3 \, s9 ?/ ntrade-record-one-len;;trade-record-one的长度# `) d" H6 `% |/ `6 W8 q2 i# V
]& Q* m7 x7 y8 G" |( W# c( E9 \! n

9 ~3 F) y3 M# `4 V  M  a;;setup procedure9 r; s9 n" {  Q2 K* q9 h
8 D+ \2 b, p/ d+ I
to setup
2 b. \5 h4 l* ?' c- z. n6 b8 r- w  U4 j5 D; ?1 y# w* W
ca
* Q; q& o7 P: X  [( K" F3 Y7 N' e
% s% g& x) t& J/ r% P
initialize-settings

( A" L! O, b% K# ^4 R9 O. Q+ Z' N) Q9 X/ b) [/ N2 _
crt people [setup-turtles]
0 [4 M% M9 P) ?4 s  n  E
# Y7 Z+ B! n& w- f: U
reset-timer
8 ^- W: F/ `3 Z0 C9 f6 C; }

" ^" B* G% y" `poll-class

2 F7 y8 J: e) {$ x: z1 t# q* X6 R5 N' R2 J/ M! Y1 p! s
setup-plots
6 f6 A% u, \) \8 V
0 L; Z; z) u* S! e% _/ E
do-plots

. P2 v! J5 Q5 U' H! Pend
. a7 t" o8 P- t& \- O* i4 `/ M3 X& b' y
to initialize-settings9 ~/ w  G+ ^/ k! ]' T
  d9 v' h1 i2 u; o
set global-reputation-list []
+ e  W: h% c' j
! N% t. b$ g) U! z
set credibility-list n-values people [0.5]

1 d1 e7 q! M2 K# P2 z, @3 p# v! G0 v! {4 N+ O' J
set honest-service 0

( x; ]% y) l# W/ H0 @8 v0 U  x2 w
( U; S% C! v  R6 G" z6 w2 S3 Uset unhonest-service 0
, ?5 s, m1 @: ?4 ]/ w+ Q5 y8 U0 c
+ ?3 k) i' [8 R* V" G5 p
set oscillation 0
: I0 t0 y2 e4 O) v
# i" d* a* e1 g4 _4 F& q
set rand-dynamic 0

7 ^0 g) p6 B) B4 Nend
7 J/ [# l0 D7 [: P. t" R! u  c5 a! q
to setup-turtles
: U3 A( v( V6 c  `set shape "person"
' a* G2 F. \2 [, g9 l/ C4 c' isetxy random-xcor random-ycor- Y! N8 X: K. c, d! D* x1 y9 d" F
set trade-record-one []. o  Y! [) L4 U5 F$ H& c4 B/ Y5 E
1 O& [, @/ l- F" m# W
set trade-record-all n-values people [(list (? + 1) 0 0)] $ Q6 K2 k) J4 X/ m

* m4 C% v. n% a' }2 E- Q; Tset trade-record-current []" `# p- \- H# J5 O1 y$ x4 t
set credibility-receive []
2 S4 ]8 w  \, Mset local-reputation 0.5' D/ f4 _! @7 _% k9 }; e
set neighbor-total 0' i7 A, W* b2 v: B5 {8 X+ D5 ~
set trade-times-total 09 J! Z. w7 H' U; E
set trade-money-total 0- B' I' n1 b2 Z5 m1 K8 X2 ?. r+ {
set customer nobody+ g6 z7 e( c7 z: M) j
set credibility-all n-values people [creat-credibility]* {' z5 m$ ?) A5 f& D
set credibility n-values people [-1]
7 y% i+ R7 Y. A! o$ [get-color0 o" l% W6 _& a5 b" ~4 L9 ^
) D/ F9 r' \1 D: T  i
end. @7 S9 i5 ?2 l/ Q1 F( n; g

- Y; _9 f- @2 h6 [2 r4 ^- dto-report creat-credibility
2 y+ L2 Y! R8 m) R" |8 zreport n-values people [0.5]
' h" J# {( t. mend
4 j7 s* A3 Z2 W/ t5 V6 R# v  _  f! m6 s! X7 i
to setup-plots, O1 |0 w+ N" d0 C
$ G7 k  n1 R) J8 K1 I
set xmax 30

8 F; \; p6 P( B" |3 W; M5 h, X( `7 w2 u# I* b
set ymax 1.0

" c! ]' _- J7 y; u$ |; G
. @- {4 e5 f- j# A" j: \clear-all-plots

3 v" s4 v. e/ d; }" a4 [/ r. N& Q* X; B
setup-plot1
8 }; g! Z/ z: V1 O& j$ D" B5 A
+ E/ L3 S' v: j$ w8 g
setup-plot2

# I5 n7 f; W8 f5 Z% x8 W" _$ _/ F! p; y9 i
setup-plot3

  y2 U2 a1 u# Nend
# u3 A: i2 }% N# }. V4 n
- Y5 M  T+ ^* ~. o+ `;;run time procedures
! j8 b: o! e- F4 [- v. S. m- o. t% H7 C5 Z0 q
to go& y' T3 V% [% {3 E" }

& b/ j  I' a# K/ wask turtles [do-business]
! L* b& ~+ D, D' E: I' g+ x0 K# y4 H
end
: a2 H# m7 @) u+ Z! U) l( |: i( D; e7 v) a8 S! h$ _5 z
to do-business ( i& m# T- m1 V: N; ]. e
5 k- ?" |6 X1 S' p3 c) p4 z. d$ i

$ K) [* @( V2 O. M* Z! brt random 360

5 ^$ A: X  {6 i; f- X
4 c) K; v+ d3 s& }( ^fd 1
5 H0 h3 S9 f! B# r
1 g( M5 g6 \) ~5 z3 r! c1 n0 F4 Z; [
ifelse(other turtles-here != nobody)[

# t: A9 q  Z5 v( S: v8 @4 _/ \8 {: C3 O8 e% C0 m) E6 y, a# ~
set customer one-of other turtles-here
( D& t7 @6 w  X0 R+ t2 a" u4 ^7 r5 I

) v6 z6 o7 Q/ d* C  o;; set [customer] of customer myself

6 j. j; s, G0 M( ^6 L+ B3 v1 M
, ~# g# c3 L) W# ?, I& uset [trade-record-one] of self item (([who] of customer) - 1)
1 d; P! U' X. W2 k7 p  P[trade-record-all]of self
- R9 [1 Q+ J* A* k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 Q4 s' V/ e+ i

0 o1 C+ [4 x: q/ B: [& e" N& p5 ^set [trade-record-one] of customer item (([who] of self) - 1)
* P6 M8 Q( V* W1 M1 W& e[trade-record-all]of customer

. y$ \* d7 r2 X( ^" V- y9 Z7 o% ~- E% a
set [trade-record-one-len] of self length [trade-record-one] of self

( ^" T+ Z, x# l  ~1 t
2 e9 M  w$ U+ P% Q! K+ m1 qset trade-record-current( list (timer) (random money-upper-limit))
1 r& m0 r4 S7 p7 s6 u" S

. t$ Y" W3 C0 o4 D, A# jask self [do-trust]
* E4 t, f' q: W+ t0 P; j9 H- i4 ]& G) V;;
先求ij的信任度
1 v3 ~8 n; H3 ^! w0 e1 o' p, G2 Y
if ([trust-ok] of self)2 g8 U) h4 L$ O3 e* o
;;
根据ij的信任度来决定是否与j进行交易[) j/ m2 z( t8 L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: t8 U; q- a) s0 v; Q2 ]6 L

0 L& a; b" r, b0 g( s4 x5 R0 D, c[
& _; `. B9 d5 y) ]0 M& b2 p

: S- c) S( T# N! b' M0 F. t1 ?do-trade
& ~: n( Q! `# p+ h1 b* f
/ f  ?+ K0 w2 A$ f# V
update-credibility-ijl

( a* n' I( G& r" J) p2 B) k, y8 q$ i! R1 K
update-credibility-list
9 k$ q  P% P8 [1 H0 Q

( e$ A2 ^0 x5 A( A2 a: r. D) ^/ x2 Q# n- z8 A
update-global-reputation-list

4 ]" q) |% s7 j5 ?3 F/ ~. F7 f: r/ @9 S3 Q7 u! ]
poll-class

$ r1 M2 k; t5 N! l: y6 }+ f4 `" b8 \- m
get-color

% r  p0 f! s+ S, D; ?
. B" }/ g/ `: v, n: s2 e]]9 P6 r* F0 O1 {) f! ?& W
% r3 k$ S/ S2 ^1 L  k
;;
如果所得的信任度满足条件,则进行交易# \6 U% m# ~$ V0 Y

/ f1 ~0 D( \! t$ `5 ]' v4 S% W[

6 J' X- K% @8 _" r+ _& n% J
$ S* c) b% u5 w: R3 s; q6 _rt random 360
+ U# }3 Y8 F6 ~2 F" \* k
5 Z- J$ k% u# m' p0 @, r
fd 1

  n2 X8 m3 T. o4 S3 v0 B2 w1 d) K  p! }) u  ~& O
]
3 S6 z& |& k* n! F1 M
4 y8 Q( i# D9 F; S9 l+ B
end
- x2 A, k5 M. \9 @: e9 R0 C
$ [! _  O0 I$ v# C5 ^; `9 z, v. t& r
to do-trust
! Q7 \6 d6 A5 ^7 ^0 U! b; mset trust-ok False& @5 N- `5 B+ z

$ P+ v* I2 ^/ `* _

. n5 P; K' j& C$ b. j# ~# }' O9 {$ qlet max-trade-times 0
* c$ H0 r# S: l  mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 }/ b8 h# p' W
let max-trade-money 0& ^7 h. ^7 ~* R0 O1 W( q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 j6 N4 y2 [' B8 \: ?4 `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 A) e& F& Q; Q- p$ J( O

  C: L: C4 {) ^* p8 X) {
/ Q2 t, @! g5 M7 _
get-global-proportion' S4 z6 M, v; [* q% S" B- Y" R
let trust-value+ P6 u/ h! j2 \( R! S
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 N( w) A/ f! K' oif(trust-value > trade-trust-value)
3 {* y, a& t' ?$ U+ c: t[set trust-ok true]
0 h5 a* \) R7 D/ w( }end4 P6 k2 E% ]  u2 L+ |% J. f

- a2 k' S/ Q) p5 d4 Fto get-global-proportion3 v# D3 B* u3 V$ i( P
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! B2 z1 \# C9 Q' E[set global-proportion 0]
% B5 r, A, B5 f4 n/ K- @. M+ ][let i 0
/ t! h- U9 ~2 n% Q3 glet sum-money 0
# S3 l: w' ]7 t- P5 ^while[ i < people]% l' C. Q+ \0 U
[4 M3 B* @/ Q5 }5 u
if( length (item i
9 O2 \! P" C+ x. S8 Q[trade-record-all] of customer) > 3 )

3 }" ~6 b+ p5 @% g[
$ c3 l; U5 D4 O8 ~$ X0 vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))* v3 T7 V; ^7 V* T+ l( N
]
0 r7 R) M' V' j]
% Y+ _9 o) y9 z1 s  Olet j 0' B( w! [. B8 i: O/ [
let note 0  F& B6 S7 o, V% s" o9 y
while[ j < people]) U" n1 I1 D# T- @" y
[
& \' i9 O. ]) q1 D# Mif( length (item i
# X/ w* o9 x9 \[trade-record-all] of customer) > 3 )
% M7 @( S* m: Y0 P6 I6 B3 I3 M9 Y
[
- @% b# t9 N7 v4 W) s" P2 Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 J- B. K7 O2 t  [( W" b5 G/ o
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 T* K4 G3 ]8 C2 i- c1 E& o8 o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 R7 h) O( Z% U. K; l+ a. n
]
4 t) d* s1 g) o]' j5 G) q  g# L' C6 x0 ?5 t7 ?
set global-proportion note
0 G( w) ~9 |$ V& c. O& F]
7 A& g' o( C3 `$ v# a4 Y; q2 kend
! l# D& G, s5 k  a! g: O4 y  |4 o; Q3 j- l% K) i
to do-trade8 t9 ]& M$ r) @6 s6 L+ Z
;;
这个过程实际上是给双方作出评价的过程
1 D. o$ }) r9 r9 h9 `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& U' v+ R# C9 w1 v  A! nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 D* P* Y: ?$ aset trade-record-current lput(timer) trade-record-current
4 P( d; P; l/ j6 {+ i3 \, {( R;;
评价时间! a+ z+ [& i# L6 c# c% V
ask myself [
, D% {# F1 ?0 d& f& S, qupdate-local-reputation% G# i4 s# c& b% M- q4 v, U, J
set trade-record-current lput([local-reputation] of myself) trade-record-current
% `+ i# P. h8 t/ b]
6 w- j/ x$ F3 N: z* n7 Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% j$ G& ~3 W8 E( ?
;;
将此次交易的记录加入到trade-record-one
0 M1 p5 b: ~. [' \: Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& Z6 t; V1 A/ L; i$ ]6 e3 R
let note (item 2 trade-record-current )4 C0 c$ w& i+ n  I) r
set trade-record-current* B* Q& e3 G: }# Q
(replace-item 2 trade-record-current (item 3 trade-record-current))

: m/ p5 x. `; P* f  n; {set trade-record-current
9 T% r6 P7 \4 \/ C" V# y(replace-item 3 trade-record-current note)
$ a; v, T2 o  F7 x9 |0 R) Y0 D! q! x4 [8 [0 p

8 ~' `5 P, A2 N3 |0 Bask customer [# H, r& `! z! Y( ?/ o: A
update-local-reputation
2 y. F8 o+ r' s) l+ ]set trade-record-current$ p2 A: O+ E$ p4 ^- _( I5 g$ o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% }. V' ~" b7 V! U* {. A]
. N0 L  N6 T# u
+ Y4 O' e8 ^2 a4 B0 s" u

7 u) A: B! D& }0 L6 x' eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, ^  d7 ]9 o( i/ g8 w0 h

( B) U. p& q; h) M5 J: Nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ q, s, W# s  E$ }
;;
将此次交易的记录加入到customertrade-record-all
  V' @" i+ d2 ~! Yend
) I. a+ E) Q$ q; T# @/ a4 l- X" r  x/ E" x$ }
to update-local-reputation& |1 n# m) Y2 ]% a; g
set [trade-record-one-len] of myself length [trade-record-one] of myself
% c! U  H0 Q" k7 {5 N5 i, E7 a" _$ {) Q/ i& N
- w7 d- `* }# C9 l! q
;;if [trade-record-one-len] of myself > 3

) ~; X$ S1 y: U9 u! ~: s4 eupdate-neighbor-total# |9 {4 @  P: u4 d9 E" o- z
;;
更新邻居节点的数目,在此进行
& \: @% w9 d' }5 {6 ]let i 3$ |5 P' r8 N1 o, [1 Z( M
let sum-time 0. P) `  D% n( @
while[i < [trade-record-one-len] of myself]. e8 P  Q. d, f3 w' f9 k% d' @
[" \' U! s+ V' ?' A* a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: i8 B) O" C0 J* b5 _0 n* K- ?7 Vset i+ B5 a4 }# o, B# M
( i + 1)
  W5 K, W/ t6 H4 F; ]/ v3 X8 j
]& {# z0 V% V3 W- w1 f& d9 c) _
let j 3) o+ Z. w( W( O: s; S+ g
let sum-money 0. M- {* M( d1 P  ]! b
while[j < [trade-record-one-len] of myself]
; h: U; `; c$ w9 s# \[5 p# l6 C7 ]) |, G2 |( J
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)
" V( z! Y& B& M" Gset j
) s; l3 U9 i& F( j + 1)

3 r2 Z6 y! n5 S# e, ~]. I3 l% q7 X9 @  R
let k 3- O% v2 J* ]9 C" \# R1 M
let power 0) a: f+ Q* x/ s
let local 0
6 a2 V8 n1 p6 m9 c+ h' m6 hwhile [k <[trade-record-one-len] of myself]2 F+ |8 \  L. o, i0 n" v
[
& L* K0 z: P% ~& cset 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) + b/ K0 t* A( N9 H; R
set k (k + 1)( \" t9 }0 z6 q5 g( V- T" e
]
+ w4 T5 s6 n+ a2 mset [local-reputation] of myself (local)% v+ b: V9 b" I
end% y( b6 a/ n( E
; j2 `/ @; g- ~0 b
to update-neighbor-total
6 Z2 j0 M$ z0 P9 A6 ^( e
8 q9 x$ N0 ^2 r9 }' M5 r$ `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% f$ q7 U% k+ C- ^

- Z4 z% Q4 v. W
$ N( X! O4 {! t  P# T6 J
end* c3 S* z. E! i- U% E1 j0 d. V
' F3 q6 [  ^# a+ j( U
to update-credibility-ijl 2 @% {- _. n% o6 O8 F
* a6 t% m( q3 A. p; j# ~, s; |
;;
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。
! S* f7 J' H" B4 V7 ilet l 0$ X+ U5 a: i6 A' V8 {5 ?
while[ l < people ]+ {5 ^/ V1 |$ a1 j$ x/ r
;;
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 ~& M+ N! a# b" J0 w[5 t; P* e. h9 k. B- S8 ]2 X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 Y- W& |& H" s- t6 ~# u
if (trade-record-one-j-l-len > 3)6 R# Q, X. R& y" Y0 N$ 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$ h  |# K5 u/ m$ X5 x, [- y
let i 3; H" ?% [7 _: e8 w' R
let sum-time 0- D0 q4 V( ?+ `2 K  [/ u1 P$ W$ r7 ^" J
while[i < trade-record-one-len]
* I0 p' s$ H5 A$ F; H[
# V+ r8 N6 e* n/ Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 c' C8 y9 i9 a5 K6 f
set i
+ b1 j: N2 S2 ]7 L" i( i + 1)

' a, J( z, ]8 ?- L5 S]
# G2 o9 ^5 N: ulet credibility-i-j-l 0& T8 J3 B3 S  T3 _) J* V" S
;;i
评价(jjl的评价)* K2 D0 z- s! `) f/ y/ M9 z: W
let j 3
; _( V9 N% K( P' Ulet k 4
5 S3 X6 M7 U, \1 N/ ?& ^while[j < trade-record-one-len]
5 n# l& K- ~6 \, f/ B[
' b2 }: ^) p, f/ a3 K. R' 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( c9 J; c, [7 [7 Y; f# d& i
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)
: G4 r3 f  b$ @# v5 f. fset j
, w! z; w2 R. ~3 n  q6 B( j + 1)

; R! P7 z. b8 r5 A' R& []0 J! d% }5 T2 s1 ?( J5 W6 M3 K' C
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 ))
: f" `2 G/ l/ b3 C: ~  q
5 m% s2 s* Q; z

2 x% b7 G" A& e) ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 [7 M2 i# E7 ^;;
及时更新il的评价质量的评价  D/ A# e- B3 M% T. q# C5 r. ]5 w  A
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 L' A# `: m- J$ c% K8 {" Z$ F
set l (l + 1)
2 d9 J: Y* ~, a]
8 J2 m! c6 }, E; B- ]$ Nend
9 Z" @7 N0 u5 J. o; U; p0 r) R# b  w; M* f% j% a% P
to update-credibility-list
' |5 e2 B7 H( u0 ulet i 0
' W% c$ u$ I0 Vwhile[i < people]# s! r! e; G( _
[( l# _8 r& e+ O4 l2 k" c
let j 0! h. B3 V+ ~* F6 y7 r5 O
let note 0' T3 N5 e4 R- f, N" ~" q- f
let k 0
3 t& b9 T# ~8 r; W;;
计作出过评价的邻居节点的数目
8 ~2 }/ G& {' `: f0 L8 B& O4 vwhile[j < people]9 V5 m- F0 X' ]7 M0 e- l" v& M6 T3 w# \
[
- M: t4 p6 y: S  V- }% wif (item j( [credibility] of turtle (i + 1)) != -1)
8 ~: A2 H( p) z2 \) _+ D) g;;
判断是否给本turtle的评价质量做出过评价的节点
4 Y) ^9 H+ m! A) y6 O[set note (note + item j ([credibility]of turtle (i + 1)))
8 i" D) M( h0 _4 N;;*(exp (-(people - 2)))/(people - 2))]
. O$ P4 ~# i8 D
set k (k + 1)' m# ]0 B" H: p& m
]7 O( X% g! A% z3 q# A; A7 Y
set j (j + 1)
+ i. n1 z* x. z, }, ^]* N& \' I. W/ `+ \5 O3 h0 M
set note (note *(exp (- (1 / k)))/ k); \8 w7 y' E, `% B3 M( N8 r: g
set credibility-list (replace-item i credibility-list note)
6 n2 m1 O* {6 c1 d# s) sset i (i + 1)
8 F3 L, k: h' I! ~5 c; P" R9 l* j0 p]
' J! V$ b* ~) ?8 V5 G$ yend
! r4 B1 ^0 g/ Z6 Z1 Y) I% L5 ]  u2 @
to update-global-reputation-list
$ L  F6 _+ Z4 P6 B8 ?0 f( xlet j 0
9 T2 c7 O  T* Gwhile[j < people]! l3 O5 |6 ^7 c3 j4 |& `7 C% j
[
' B6 t5 b+ Y# Z' \4 ?; Ilet new 0% q2 C/ y1 t' o% d( f
;;
暂存新的一个全局声誉8 O4 t1 K, G% g( d5 r( p# l
let i 02 q. V1 w. C/ `) ^
let sum-money 0  v5 i9 R2 C2 V0 H$ c8 u1 z
let credibility-money 0& J) a9 \% N3 k
while [i < people]
# T7 U+ p7 u; x1 `[" d3 M/ G* F  T& h% \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). a& e1 e. q$ O' G. _
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( ?2 X9 W- g# ~! x7 V/ t
set i (i + 1)7 l8 j; O/ I! z7 C( ]2 X
]+ _9 r$ m0 i+ K8 u$ G' J
let k 03 F# s. V: |" Z0 a+ S1 \7 g
let new1 0
$ h+ }* p% f$ s* A; o/ s/ ywhile [k < people]
# g! |# @' P8 A3 }) r[" y- E; h  I: F: W  i# G
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): w) U/ g6 k0 N) R  `4 j
set k (k + 1)
+ O5 _: d# Q$ `& x$ ~7 ]  p]: f6 G4 J: y. \; T# c4 a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 w4 i6 T/ c+ m4 j3 T2 t5 c
set global-reputation-list (replace-item j global-reputation-list new)0 H; m1 g, I  {4 N1 M) t
set j (j + 1)' G0 o6 o( ?  `1 M6 B. {1 A) t5 |
]% s5 V. o* f1 s5 f0 |/ T" x4 @8 A
end
1 z- F! q' e4 k" @. u
- e! e4 w0 l2 x1 _2 [  c7 C
8 z! S1 `0 t3 B2 K0 z- N
) a9 B1 I3 Y) V4 Y8 v6 N) Gto get-color
5 G2 f) H5 e" x
8 [$ N5 q' V5 B7 z/ q$ f# i. t0 ]+ hset color blue
  J- V/ w& I. C# E) a. z! P; o9 `
end
1 X+ y3 k: o% N/ D* w) i1 B9 g) O; N$ l% ^! t$ D& V
to poll-class. N  p  f4 ~% f7 ^
end
/ Y. R* n) e1 L$ T8 l. f2 C" V/ x" ~% ?/ p, l! v
to setup-plot19 {' _6 A( |: k9 D1 O/ h

. k: Q/ j/ H! I! b  Vset-current-plot "Trends-of-Local-reputation"
( @' d0 m4 N" m: Z& x

9 q- ~6 F* ]1 }- {: rset-plot-x-range 0 xmax

  c% \! g7 D; {5 a- I* H6 a7 D5 p0 w$ t2 ~3 N2 Z. t' a
set-plot-y-range 0.0 ymax
/ A7 {' {2 x  H4 p  E
end2 P$ \! v  V# r. u+ J, [
  K! p$ ?7 T; K6 s% P; n
to setup-plot2
1 W. U, E1 E, Z; j+ b  U
& t6 S3 H! v; G$ J% kset-current-plot "Trends-of-global-reputation"

; d! m$ b" a  N( b$ Z' v% [# _
+ H9 r4 P8 E. e- N' k/ ~/ Lset-plot-x-range 0 xmax

5 E7 \: |! w1 n# t" U- p! Z0 s1 @$ O7 H
set-plot-y-range 0.0 ymax
# {4 u5 |( d- w
end* A; }) |+ w0 G3 Z6 g

1 y) A6 t% v+ Y( `# k8 Eto setup-plot3+ |3 P* {- H1 x* S! M
5 O* k0 w# ?: ?' [
set-current-plot "Trends-of-credibility"
* E( U) l6 s/ l2 m
( r. C$ z4 t/ z" J' o& c  F6 {
set-plot-x-range 0 xmax
& q7 u. \4 ]8 i$ u

. z! @1 d3 p+ }$ B- h' fset-plot-y-range 0.0 ymax
1 Y7 J0 ~2 @$ L- d" f
end
. u0 j5 z$ N! q) i/ P2 }4 ~6 k; F
to do-plots
$ G* M  j* B+ ~/ q- k3 uset-current-plot "Trends-of-Local-reputation"
: B! Y7 Q) W: S0 {, e2 {set-current-plot-pen "Honest service"
5 n' t/ [6 y! @( q1 X5 Aend0 N! F. v) H0 Z$ E- t

7 E, T" }( [  S' C6 ~[ 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.6 d& h5 X' G  p, H1 r0 e# |

+ g' y* m4 \8 c2 y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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