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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:
7 l4 {1 R$ k! l8 f7 f4 Wto do-business
. z+ u/ y& b$ f4 o( \8 G rt random 360' @$ K+ }: L! O# H
fd 1
4 A$ x9 ?5 R" b  R2 ~ ifelse(other turtles-here != nobody)[: u% M4 A8 |; 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./ w3 W: n4 W4 B' c' M- l
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; n' J; a1 Y' V% x0 N# f& n7 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 k$ y# _( H' ]3 O
   set [trade-record-one-len] of self length [trade-record-one] of self3 J8 f  c) N0 L1 r) f
   set trade-record-current( list (timer) (random money-upper-limit))
# @+ F$ G$ x7 }) o9 u& N0 L  F% N# r+ n
问题的提示如下:7 [, I8 L3 ^) b0 D& \
' m7 W" N/ y+ D, [5 P
error while turtle 50 running OF in procedure DO-BUSINESS/ e7 f/ u7 D7 I* |
  called by procedure GO' _4 P- v" @( B6 m: Z9 w
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ `4 U: T" ~( u$ q& y5 R+ O
(halted running of go)
5 b! p6 F; r6 n% A. p
$ M. F5 b# k6 P# S( E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~~
6 c3 v5 l7 Q) ^9 g, y另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教: j- D7 Z1 b  E  `% G1 s3 q% z
globals[* s/ D$ q7 W! i2 M  B9 g& [2 ]
xmax
  |/ q$ [* L' {! _& A' ], Q% iymax. ^; y" h  \! u) O
global-reputation-list
, j7 o# q! X1 P* T% A- E3 Z# N- h" h2 g5 L
;;
每一个turtle的全局声誉都存在此LIST
' L: l; Y) m$ e# U% x3 Scredibility-list
% H6 @! F" C( X  ~6 a;;
每一个turtle的评价可信度
7 n2 N/ t! u3 [" I% J# ~' s6 f# K* hhonest-service
+ N4 B5 \* j' S/ N" Z6 Z4 Hunhonest-service
; c- Q5 N# Y5 b7 U3 }: r: O  a! toscillation5 T4 ~) f/ Z+ L7 m# ]. |& Y
rand-dynamic
6 e% Z" _6 d5 k8 Y" c" S]7 v3 w- Z& }0 C, a* D( U4 w5 v- J" Q

# B4 J5 {! D" c1 O# f% Zturtles-own[* w" E# J7 ?) ^7 S' e& k1 P$ K
trade-record-all8 Y! i5 T  O7 {. T$ J8 }
;;a list of lists,
trade-record-one组成' J4 M7 d$ k; c( y" @
trade-record-one& {3 X- ~2 m  k  R2 L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 H* V+ k( r1 r! f
* u  U1 @$ g% p" K6 J5 G
;;[
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]]
$ x. n; P$ v! d$ F4 t# |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]
, X& _* y5 z8 w1 m- W9 x% `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
6 o; N* i& B- H& fneighbor-total
6 O; z& ~  Q  J( a, r; y;;
记录该turtle的邻居节点的数目
0 }% K( ]% W: x  `, \; O- Ttrade-time$ p5 @0 f4 g% i: X
;;
当前发生交易的turtle的交易时间
, U5 O3 m0 O7 p  ^8 H0 mappraise-give
+ X  k8 z0 I& {4 g;;
当前发生交易时给出的评价
0 _4 p! B# {7 l6 A! bappraise-receive
# M) y9 G0 ^7 L( ?5 K;;
当前发生交易时收到的评价0 }# k0 A: I. b4 I+ |, W
appraise-time: o' s- E8 k$ M. C: ?- e# O
;;
当前发生交易时的评价时间6 p( K& [/ t/ D2 i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  j6 {7 Q1 q9 [3 G) F: N
trade-times-total
0 l! L9 g  f( O& P;;
与当前turtle的交易总次数
( P. y* A- U; q5 d% l1 G' G8 dtrade-money-total
% r/ `- _% Y2 f;;
与当前turtle的交易总金额
& [* D) O4 _$ L8 elocal-reputation
' j2 s1 j3 n# w' l7 Z# _5 s( ~global-reputation0 Z7 c- }/ L5 ~* W& J
credibility" H0 B' B% F* s2 o2 W/ X. H
;;
评价可信度,每次交易后都需要更新6 M$ S% ^5 H8 Q8 i' X/ t
credibility-all  Y6 y# U3 V* X8 i# h- L0 u, h
;;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* x1 ?! [3 k* n8 t2 ~1 B

; z) Z2 a, l/ K" I;;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. a: {7 j  Q6 C. x
credibility-one# D- @8 f3 }5 ?+ ]4 [% B0 n2 G
;;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  W* J! v* ]4 m. B
global-proportion" j0 _7 ~) L/ G7 \2 [/ R$ X
customer
6 M9 K, ^" @  S4 E7 r$ \9 jcustomer-no' v; ~2 U' X7 U1 q% P  r7 l, a5 m
trust-ok
* e- }5 }" a3 _$ Q3 D# ptrade-record-one-len;;trade-record-one的长度9 V( c4 w% e# O8 q- R: z4 i
]
' S  L6 g+ o) h0 o8 F% N( E( v# m: X+ l6 S+ r
;;setup procedure
1 x- X) H; A, f8 q) E. S; G/ w
7 x1 N, S( h; K; }5 Yto setup/ K' n* H. l( h. ]% n7 _2 t& p. Z

5 k3 N: S- A, U$ Qca
3 e8 [/ |3 U; ]7 ^" v2 ]0 Q+ S
* [* K1 }* l4 g" r7 I: o0 R
initialize-settings
5 u- ~- {3 O/ S4 L1 K# n; h

- u, w9 k! h1 G& ]( K# H" Icrt people [setup-turtles]

) j: c# {  M& O% L6 O% h& L- A  p2 H- E  ^0 c
reset-timer

% G3 `3 |3 G5 A7 M! l: ]( N- N% r/ f/ T! ?+ C" t9 m
poll-class
: F7 M( z+ t9 Y5 O! l: K2 @. y% m
  P+ s5 X& Y, [
setup-plots

0 d; j8 Z/ j2 f( {! B3 h# d) _/ f; [; c: X" E3 w& A
do-plots

/ h: ~$ J' ?3 O& T( K6 ^0 Mend
" ~$ m  q( F6 a& O7 c" H) `1 A* c/ G
+ U& ]( M! F! n' }to initialize-settings! s- t$ b; v* s" x
2 I3 i4 v: D0 w5 Z
set global-reputation-list []

6 ^- H1 k9 i4 P* G, V. `) V% a, @1 r% u9 i& ?
set credibility-list n-values people [0.5]
' R. h' \  j) a+ h7 B
# `6 g+ E, k' g6 r6 d& F& c
set honest-service 0

6 b- x6 e/ y6 ]/ x. F: P. b( ~
' C& {: K( `: C/ e  G' t5 a+ }set unhonest-service 0
7 t* }! W, X! ^/ g+ Z& A) M0 }' Q

5 \# M/ G8 h. L$ {3 r( G/ U+ Uset oscillation 0

+ C: i* G8 {4 a+ V* Y; G+ h8 u- r( O' M
set rand-dynamic 0
: ~( ?! D  E0 t8 {- H) @
end
2 T0 l# d! m& U- A5 C4 K2 _  E( R* H" Y9 r: T
to setup-turtles
6 Z5 C4 |3 X* C% D& v$ h% Gset shape "person"
# a$ U8 A3 D& u1 ^setxy random-xcor random-ycor
% G; I' v0 j' K+ ?* d' r! f5 D2 y2 ]! wset trade-record-one []
  H5 m- p; _  M' d' s% L

: j( v3 y) A$ V" kset trade-record-all n-values people [(list (? + 1) 0 0)] - H0 [5 w* ?5 ]* p/ w
- h: L' A1 [: h- s# P7 s2 ?
set trade-record-current []# V% j5 h, Z8 e8 |* D1 |7 G
set credibility-receive []: Q- ~! U# w5 g9 f8 r. s
set local-reputation 0.5$ Z% B. n: j2 }% b
set neighbor-total 0
6 {. x* L- }$ P8 uset trade-times-total 0, x! y* N7 e9 T7 g4 F* V( |6 H
set trade-money-total 0( p, D! j$ t  r( M$ c
set customer nobody
9 Y, H; |( w' j# ]. hset credibility-all n-values people [creat-credibility]2 X$ q/ S/ q1 D1 V
set credibility n-values people [-1]1 Q) O" w0 Y( \7 E. V7 T$ I5 O  b
get-color
# T- K4 H5 k8 [8 [2 d( ]
0 e0 I) Q0 M) \9 H: x" E, F
end; D+ Q. x# k- q! k8 f

5 B+ V6 J1 x) y' L# a& v2 q5 Vto-report creat-credibility
  p6 p' G0 m7 V5 F; @3 g, Rreport n-values people [0.5]3 p- d& U( Y$ U/ b. n1 b
end3 e9 i) U6 @$ I; G( F% H

* c, D7 O; ?- v/ X% u$ Q* sto setup-plots( J4 V6 S' S, a) z+ P: \3 l/ c

" y9 b9 w2 a2 ]set xmax 30

9 m8 m( ^5 O8 ?3 b1 `) ^9 S) ?( e
* B& h3 y$ f, j+ A. jset ymax 1.0

  G# ]+ Z/ i# G! w# m5 D
& s+ Y2 D5 R# F: D) \$ u$ t& iclear-all-plots
% k, f/ s3 u4 c: o' r; i
4 v) w# a% n* z: v
setup-plot1

4 F/ {8 n8 f; [6 E3 D& I4 n! {0 P7 z
setup-plot2
% h/ M3 Y! w/ A- M4 m( n

, N5 y. d; L# Z( Esetup-plot3
* P7 b. D5 L  `2 b
end1 o! |) }  Y: ~% p8 ?/ y8 m

' l" e" W$ l9 f8 H$ {;;run time procedures6 m* b; n. T8 D' b& q
8 c1 Q  p$ A2 b( c
to go
& U/ O" a8 ?" }" r' C- c% r8 z8 {, a# q8 C
; v9 z* |  b; ^% k' G. b  D# aask turtles [do-business]
# T2 b. L/ V7 y/ A/ L7 _
end! n9 q4 x4 H. V; t& c

  y7 a  w: C- B% E$ d. |6 T* R4 }/ N3 jto do-business 4 Y, v4 Q( w' ?
, G" _' J9 A: I
; w% X0 c5 k6 R' v, m6 x
rt random 360

! p. ~( E3 r# T4 J' c5 Q3 B, u7 V6 R: B; B
fd 1
" J6 b/ @! E9 {+ f

8 u/ M' M/ [  P. u0 |5 T- _: wifelse(other turtles-here != nobody)[

5 t' g) D1 \- ?2 |) o8 {4 |+ `- \6 K* o" v/ e, L
set customer one-of other turtles-here

4 r# [3 J! b; ~
0 ]6 x9 @" X# N! D, q+ V( N;; set [customer] of customer myself
7 `5 N/ e8 r% I* s

6 b, `' S! P9 H9 aset [trade-record-one] of self item (([who] of customer) - 1)
* @1 g+ w& d" p; b[trade-record-all]of self( Y& }0 r+ b1 b6 `$ b# V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& K' d% U* O5 m3 ~7 g2 e

- ^# S$ f5 S1 V1 e2 V8 ?6 |' W( Wset [trade-record-one] of customer item (([who] of self) - 1)
+ |; V, i) z1 O8 R: N[trade-record-all]of customer

3 b: s  o# t3 @: d  _) k4 a* [/ T5 [
# w  v4 z$ ^) l6 ?7 Uset [trade-record-one-len] of self length [trade-record-one] of self
- }( o3 d, Z# F0 r2 E
0 x& N1 R+ m% j
set trade-record-current( list (timer) (random money-upper-limit))
1 T7 }' H9 y; n

. L5 X% V" @1 K. f  p- qask self [do-trust]0 K) c. m# o/ o
;;
先求ij的信任度; |0 _( T) ~) L, D' ?$ J
, e# [0 T( W  H+ U; {7 H
if ([trust-ok] of self)
- [+ Z# Q' F2 U1 j, L& \;;
根据ij的信任度来决定是否与j进行交易[$ x5 p% O. g7 e5 Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! Q0 B+ v" G3 L! B& L9 R- ]7 }

: N; ]3 _9 o- J0 E! r[

) _8 B, b1 @, m" F& C: x' H8 E4 n
do-trade

/ z6 f- @# @4 W0 D8 Y6 q. w6 J7 t/ w7 R% P1 R+ L* K+ j
update-credibility-ijl
+ ~/ [2 W- Z+ N6 n
  C9 p- n7 z" A5 N, {" S' R9 B- D
update-credibility-list
. ]' D, b+ h% _: x% G' L- G

% n, ?: J' L* g6 K
9 g  Q. K4 i+ u. m9 z$ |7 Dupdate-global-reputation-list
+ j; H2 L' J' x

& K* I5 v6 w2 i% x5 ~poll-class

  O! R" z) n$ n) p" J) `& ?
9 [' T* Y  |& g& t2 \2 c, A6 a0 Hget-color
: ?8 V! S( R: @7 r3 U" \  d  V/ z8 W# U2 o" c

  s' D: l5 I: R% S# g]]
7 @7 w! H' X+ p0 P4 h5 B; Q3 s+ W5 |7 e9 B+ t* G9 g
;;
如果所得的信任度满足条件,则进行交易
8 V$ `" D, [$ Z( c4 q; x: z$ W  `- `5 i, ~& L2 j
[

$ o2 o9 F8 w1 U1 l+ ~% `) I5 Y" Q2 i/ \& f
rt random 360
3 H+ T4 r! l7 K: m  @6 H3 r5 x8 a
: h  }" ~6 L* S8 J* L# M
fd 1
) o" w9 k) J* ~( C" m

0 ]& G: Z: L! C8 J# k- x: X]

' o, C. S! x# d2 Y' ~* U/ ?  |; {# u( ~1 Q. H5 @+ A) ]( [
end
6 Z- h# n3 u1 _; T" C
( S- j! h. ^1 D; @, P, _
to do-trust
0 m3 [# C9 {; i% Y! a& L, x8 }set trust-ok False! E- y* s% [; s( t
4 R+ c0 b. \. W2 p) T
7 j' X0 x% C6 J# j6 n. K+ Q
let max-trade-times 0! I, n* o) {; M/ a9 c. s
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ H3 {) D, T9 clet max-trade-money 0
/ j$ H  @' {: b4 `6 [3 P8 \foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 d- C$ A1 {) {  Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 L; Z/ N# @0 _* n
3 t  c0 t0 X6 O5 `% t4 m* b
! Y/ B& f$ I' W  h; [
get-global-proportion5 h. f7 v0 B! F5 n  H
let trust-value0 z; l% _& u$ l
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)
- ]  K) T- R, ~, C  E$ V# k4 m. W
if(trust-value > trade-trust-value)$ Z" M, S6 D5 Q" a' [* e9 x! m( J- ^
[set trust-ok true]8 m1 H. Y( M9 x/ L7 S
end. P3 n7 E/ p0 D+ ]

4 g- E8 R" M! p9 Z9 H0 n5 pto get-global-proportion" B' x& C% V' n3 v$ m# B; L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% C! o0 I4 k1 Q9 X
[set global-proportion 0]
& j5 D/ \2 L5 \  A1 V2 W[let i 0, v5 X- A* t" Y' u7 L
let sum-money 07 v' F' S) [3 J( ]- h8 m  @
while[ i < people]
+ k1 ], M! ~* p[5 x9 e, H9 A% D: N. O
if( length (item i
6 U/ v8 Z) {; c# Z6 m[trade-record-all] of customer) > 3 )

& E9 Y0 |+ ^0 D) q: O/ g) c! w[
9 ?, g" Q8 l' U: K; A$ x9 g0 Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 F& M/ s' h, k, h3 v
]; g6 A% b" e3 S( E/ k
]4 O3 Y) w/ @$ V% w  R8 u0 a
let j 0* R9 T- V" W) R4 l: ^9 f- b+ Q4 a
let note 0
. \; R6 x9 ~0 n4 P! Y! ]' owhile[ j < people]* [) I. ^4 x9 M. ?- n
[! ]+ X9 M1 j+ _( F7 C
if( length (item i3 X* D0 a' l& |( [( s5 {0 K
[trade-record-all] of customer) > 3 )
5 ^# s2 H6 A' C' d2 v' Z* x. x& K
[
6 F" m( l( ~3 o: _5 A2 U5 Q/ x- eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 [6 L3 n7 A1 U( _( q: j8 U' e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ h8 ?  C0 B8 B1 V. z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ g: Q9 T, I3 |! r0 v5 W8 P0 i
]
1 c" q; ^6 L# Y& |5 z; t/ N9 w]
" J: d! u2 x  F) C+ X" u( q, u5 Mset global-proportion note% g" Q! F7 ^5 }' y6 w1 ?
]1 c# F! q" E, P0 j0 w  G) J- n
end
; j* A. s' P( [7 g' `2 H1 B- h* v1 W5 M1 s& s
to do-trade$ Y/ E/ W2 d$ V" t9 a
;;
这个过程实际上是给双方作出评价的过程
& I: L& m3 G. O' u# d# Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  W7 c* |5 D* {% D6 A6 Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 f4 M! H* p9 W. rset trade-record-current lput(timer) trade-record-current
6 i2 T  U/ U  j: j9 E# q% S;;
评价时间4 J8 {; |) |4 q0 O, H
ask myself [
; @& \# S! f# A# ~update-local-reputation
' w3 U$ @6 J) s3 Oset trade-record-current lput([local-reputation] of myself) trade-record-current
/ Y: M1 m. x1 W6 v. ]# ~], N. C. j- X/ m* ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 S$ R' P. X( [, v9 x+ P/ Q
;;
将此次交易的记录加入到trade-record-one0 X; i( J) U3 b4 u- E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' D( f( P% U5 D) {4 w( E- r- K
let note (item 2 trade-record-current )
) _9 w- b7 }1 e; ]set trade-record-current8 N7 E5 {9 ?1 f- c0 ?) p- z
(replace-item 2 trade-record-current (item 3 trade-record-current))

; M- C1 _; X# m+ h% iset trade-record-current
+ W# i- i2 B% j4 U5 x(replace-item 3 trade-record-current note)7 G& J- a( F# z$ i! {+ J
0 N- @1 c. ?( f9 j6 D# e( n2 \

4 f, \$ ^5 Y' w. Y# x& L( i7 B3 C3 V: oask customer [. h5 L( e- R: z
update-local-reputation
! O5 W3 |0 g+ n. _set trade-record-current, D5 B" B' k* W, ~2 D0 R& L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) \$ |$ I& }" R& }5 |
]# V! u: @( i, `  [. O! q3 a  i

2 V! N0 p% |/ e2 r, u
% m0 S5 \3 x/ Q5 ]) h) V6 h3 b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 a! L/ j9 X  d- B% i. K) W

% `, [/ O. r0 \$ Q; S/ Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. g2 E% H, Q* d;;
将此次交易的记录加入到customertrade-record-all2 i  O9 y! S3 c$ E
end
4 v+ R& X" K; e0 v
4 Y& ~1 X+ X/ Nto update-local-reputation/ P& N, r! g4 d+ _7 x
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 }4 W! T) j! T. v. k9 u& ]& [9 j. w1 I9 v% N

+ q7 L$ a' R. V;;if [trade-record-one-len] of myself > 3

% W; K; U. w9 s; j7 Gupdate-neighbor-total% N$ x+ c! T5 c* H' \
;;
更新邻居节点的数目,在此进行2 N" k' ?0 d, J. A9 h6 w
let i 39 [; ?, r* j+ i  u0 t/ y
let sum-time 08 K- O# [* u6 t! p4 A' t/ c+ d
while[i < [trade-record-one-len] of myself]  X' N# @+ x1 |3 n2 ]7 }: n) u2 b
[
- X5 y: z' i0 J- z+ F% K0 L4 @7 Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 M. [# m' g$ m) w* C! g
set i
: q3 h& g: Z) q* `( i + 1)

/ G$ V, |. x* h/ n2 K  R]
& g, t: d9 b5 a! t7 slet j 3& V# |/ Q3 X/ I( p9 {! b  o
let sum-money 07 Q# w2 m$ S' ]$ V  ?7 B, S
while[j < [trade-record-one-len] of myself]
+ f) W2 v6 x  v1 m[
7 y4 o- F3 p3 @0 n3 ~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)% d. d5 ^& F* [1 `  \
set j
* q8 J. W3 b. R! R0 n- h( j + 1)

: N! O, q& B$ l( l6 K& `]& V7 K7 F/ H9 M' O* R
let k 33 H$ U( K6 y  G7 h9 M( Z
let power 0/ y* B1 @# |2 G1 [. g: I$ N% h: @4 Q
let local 0! x  N6 j# W! z
while [k <[trade-record-one-len] of myself]" Z1 w/ I6 ], t# |
[
4 E- U2 K' f& ~0 w! F) wset 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) 8 @; `9 a  _" P9 S  K, J. u) q8 H
set k (k + 1), d! s( e+ l8 N, Z9 L+ W2 u
]
8 F7 ?1 u( ]! C( Qset [local-reputation] of myself (local)
' b2 e0 _$ o6 }( Uend' j; I) l2 b, w$ S* i2 _6 \
4 ~5 U) L0 @8 q
to update-neighbor-total
  Y. m; _8 D4 a) H* C7 E1 G& h+ ?9 }) h5 S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 [( X0 t% Y, X7 W
1 f; D( \" z- ^+ J/ J" g* z& @
% r, K- l7 q) g. ^
end
/ G6 F6 E$ E! `% K6 B4 x- K( @- n) ]( p1 V+ H
to update-credibility-ijl 8 |# v; I4 i$ p) p9 v0 S: }+ \
" l- R1 ^7 I) e( D3 C* o+ L$ n
;;
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。
7 \+ s3 z* ]6 |* blet l 0
9 `, Y7 t  B+ r* Qwhile[ l < people ]2 ~" `5 j3 k7 _" g# e! G
;;
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' v: i) \! e; ?( f
[
  V" {  r1 b0 i3 dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# q) h' p5 ]9 t3 M, K2 J* yif (trade-record-one-j-l-len > 3)
" S* @9 [; d' E: b[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" \' D4 z% j& N; G: h5 |% i# }" l3 ^
let i 3! i4 j! N+ X3 W$ g8 E
let sum-time 0# x4 d; P% h; @  T2 G; Q- a5 M
while[i < trade-record-one-len]
! ]. G" D5 F0 V[
$ e4 `1 ^. T% q; f; |  g8 q3 A. a* @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& A1 K2 w! a# w) d
set i0 W: X, s2 ]4 Y9 W& N1 S8 }3 K
( i + 1)

3 K6 W/ }4 W/ G7 o, a  o/ l' t]- C* _( ^, F2 v" O
let credibility-i-j-l 0
4 F) N# a$ y! j# ^& q0 X;;i
评价(jjl的评价)7 }% `3 [3 S; g6 g8 y" r: w
let j 3% M. q* U7 F8 V( d7 y1 L3 [
let k 4
  u. \& w) _9 @0 |, Q3 Rwhile[j < trade-record-one-len]
, t1 p1 c# S; Y7 o" ]  L$ }! ][& l$ [. [0 S0 J* K% `
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
8 [9 h' N2 Y. I; R+ q' Jset 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)
6 z" ]& L% _, U* w' |) }set j6 [' f0 |8 P$ b$ f2 o! }
( j + 1)
3 k, g% `9 l) B1 `
]
* Q4 x. k% ?, `- }4 y, t, m' `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 ))/ k$ z6 I6 u7 x, h( F! @* v
" H. C  E2 ~0 r1 Z, {% n, l
' w% a: }0 Y; G# Y" U6 D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" w' q0 |" N# |) Q  r7 i
;;
及时更新il的评价质量的评价' D3 X) F$ {) V" y' h8 K
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* A1 I0 e* w) d7 h2 R: Sset l (l + 1)) M2 G% x: B5 Z+ \* G" H
]
- D% \2 N) {6 ?' M! X* ?end, k9 f3 Q" [8 n0 p5 q3 h8 N

. n5 [" _/ C, i( |0 P# X7 p4 mto update-credibility-list
# o- V$ x6 M3 m% ?  Q  m" \# ulet i 0
) |6 w# |* e8 Y/ @1 @& ^/ G  mwhile[i < people]
( J/ y" V* T3 i[2 ?$ [! ]- {2 h0 }7 j
let j 0
. _4 P8 M8 K) W: i2 X! ]let note 0& Q# G4 y$ Y) z. n; w8 b/ y
let k 0
6 I8 w0 A# m( S$ T* F" U' f;;
计作出过评价的邻居节点的数目
) e. s, |7 E6 a! ~; ]  G- ?* vwhile[j < people]! d" X$ F. {0 r. v6 ?. |5 T- S
[
% f4 _/ j( \* _6 Nif (item j( [credibility] of turtle (i + 1)) != -1)
$ A8 u3 o+ d  `0 l2 a;;
判断是否给本turtle的评价质量做出过评价的节点
' y' B2 C* o  T5 x; c& E[set note (note + item j ([credibility]of turtle (i + 1)))
6 i( D7 R1 ~4 |;;*(exp (-(people - 2)))/(people - 2))]
, N/ {: G1 H; O3 h7 _
set k (k + 1)
# J0 A7 g, ]3 ~5 Z( O]
8 Y2 e: p1 N5 I2 Mset j (j + 1)
$ w% R, P6 W0 L3 _7 V]' u  w1 k' ^+ o; i2 E
set note (note *(exp (- (1 / k)))/ k)
- N6 ]. ]( R5 L" y% yset credibility-list (replace-item i credibility-list note)
" J/ k& m) u0 [/ Qset i (i + 1)
0 x2 L& o3 V, h; e! y+ U9 G" n( @]
- S$ v4 i8 l: e" y8 O+ H5 iend2 r& J! o+ V0 D( ]; g5 r

1 c9 F. T& U1 E3 lto update-global-reputation-list
/ z) F1 y% A* _let j 0
0 f' ]& W" n. x: l2 P5 Twhile[j < people]: n7 S; X+ Z7 Y$ E$ w9 H
[7 a) ?- j: C9 H+ Z7 b) j# \& d
let new 0  |3 }; j/ W1 E* E" `/ h
;;
暂存新的一个全局声誉! z6 [7 O5 |/ w& m" Q
let i 0
' H$ H, J2 ^: flet sum-money 06 x) O+ z; u  l  \1 N% o( `
let credibility-money 09 i- m! Q% l8 \7 M/ Z
while [i < people]! A8 g) s2 v. s3 o/ {& _8 ?
[# t4 |2 j9 a5 d8 T( ]% r* r) w) M' X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( o: Q& _* t& [2 R2 X0 ~: P# Q9 N
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ D: k) j3 x1 {+ \- j
set i (i + 1)
; A) k8 C3 B. w6 U- f5 s]6 U5 ]: x2 O/ v, g1 Z, D
let k 05 ?" T* u, e+ e, ^# K6 M
let new1 0
4 Z8 H# }1 W% n: b; Q( l/ k) xwhile [k < people]
. \7 I# O6 k- F1 ~[
: Q& u3 R" z; l  y& X& Vset 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)
+ Y9 q7 t, G6 T/ ?7 t# d0 yset k (k + 1)4 }5 t' k3 g! s2 f/ g
]) F2 |" F% Y5 V& ]
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 O9 j+ V( S  k: D- A* F
set global-reputation-list (replace-item j global-reputation-list new)
! E1 }0 c8 b) L$ q- jset j (j + 1)
% [' c8 l) Y$ V* z]% `  n+ Q! j8 {4 e
end: D8 N. k- b2 ^6 S: ^/ T
7 Q% ]5 R- ~2 W# e$ r7 d
) }& _3 K9 u; m- Z

7 z! j+ g  ?* V( \. B: X. l" zto get-color
$ Q: p. k7 ^2 Z6 n
: h; E7 N0 Z3 B' t7 Cset color blue
7 j& d- p4 u7 p5 s3 L2 S2 [
end
$ i3 W% H5 i9 A- ^$ F
$ P, n; j% B% gto poll-class
9 o( p" d, T( R2 {5 O. Wend) n( T$ ^/ h- n# _% F# Z

4 Y7 d. j# A& \9 rto setup-plot1
2 k0 F0 b# A& [: v6 j1 A+ [7 j+ W9 J* t0 G  J7 l; g
set-current-plot "Trends-of-Local-reputation"

/ i" Y$ `& \. Z7 E5 ]4 f
4 }% p8 K/ q8 b$ [set-plot-x-range 0 xmax

- _9 [, A5 \7 r: \& D1 E" X' ]6 g, p
set-plot-y-range 0.0 ymax
! u5 U# `1 B5 s! ~. o
end
# n8 D5 y) V' ?2 |# e/ U: b% Q6 }  v  z
to setup-plot2+ G  m  t7 n; h; q$ x0 a/ W

/ {2 W% U0 W' w" J8 E. i: x; p  ^set-current-plot "Trends-of-global-reputation"

% ?2 q* E) }" \1 y2 K6 F. b4 v0 \: ?+ a
set-plot-x-range 0 xmax
8 M/ M) P* l6 `% g2 P3 s
2 i( c4 ~3 s1 O4 l7 |
set-plot-y-range 0.0 ymax
5 r& P7 b8 s' ~' R8 Z
end1 d2 K0 C. W' ^6 i

$ W( T# M2 @; i; yto setup-plot3
; w* n( q! b; H/ |7 l! j
8 W( p0 S  z0 h/ O, E$ G4 ^% Mset-current-plot "Trends-of-credibility"
8 W8 J+ e+ r" k* o1 H- C/ l
1 ?/ ~. J( X3 L" [2 {% H
set-plot-x-range 0 xmax

" s! H: {; c* @" a% ^) g" r" l4 N
set-plot-y-range 0.0 ymax
% W  w1 V( I4 r3 g
end; A9 d9 r- g5 t" s! j: F

0 a+ @  r5 k; @3 Pto do-plots
7 Z5 t4 g( l7 k  ?- dset-current-plot "Trends-of-Local-reputation"2 H, g: i3 C# C7 ^6 S  T3 `) h: V; H
set-current-plot-pen "Honest service"* u# w6 p2 \* y7 V/ |& A
end+ g  T% S7 _# u& l: M

5 ~- Y1 @9 D5 K0 E5 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.
. c4 n- A3 Y/ O# z8 m
* r8 @) I" M+ K8 Z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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