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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:& M+ @0 ^; G$ L
to do-business
* L2 _, i. V( W rt random 360
  M* d2 C" d) m  p  R$ S, t fd 10 A: f0 Y# e3 m8 X* n2 x
ifelse(other turtles-here != nobody)[/ G5 ~7 Z- i! \! x& \
   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.7 }. @3 B* \/ E" T. V& Y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) C9 J0 _4 m& Y, I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( d; G/ I7 N, b& O7 e( X1 b   set [trade-record-one-len] of self length [trade-record-one] of self
* t+ T4 ]" D5 g5 q   set trade-record-current( list (timer) (random money-upper-limit))' j% p9 l: d( h# g
$ o4 i1 r2 H( J: `* \
问题的提示如下:9 z  f7 E) e7 l" z8 z

! C$ ~+ L3 J: r2 O5 }' werror while turtle 50 running OF in procedure DO-BUSINESS
4 S' N4 A8 u, `. D0 J  called by procedure GO
$ d# @, l+ I; G2 eOF expected input to be a turtle agentset or turtle but got NOBODY instead.
: O& X6 s7 q( L
(halted running of go)
8 N  R% T- v% w  ^5 Z
1 e: c; E. N! i. M( w7 Q! ^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~~
+ b: k$ Y+ y2 S/ s6 N: Z! P7 S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! I) i+ K. Q# z8 K' @
globals[
# I2 ?/ s2 H1 m1 K2 V3 vxmax
3 D" B& x0 f* iymax  c+ A+ e/ a% `% Y+ R  h' b
global-reputation-list$ a0 @" E7 L* ^; ?  C5 C: s

0 e( C8 N, H% ]  U: u;;
每一个turtle的全局声誉都存在此LIST; m% T' ^' M; C0 [4 {: M
credibility-list( w* p! e/ E2 V6 _
;;
每一个turtle的评价可信度5 G- ]* c: e7 y) B
honest-service, q0 C* i$ h' g
unhonest-service# I7 v' R0 G2 P1 }
oscillation+ U; X) Y, N6 E! p  E8 Q- A
rand-dynamic
* u/ {! R% Z5 m" @]
2 p2 e5 n3 D% |: E- X6 a
; ^5 k/ b: O% L+ H- T- {) Aturtles-own[
/ g; y4 Z1 v: ~5 Gtrade-record-all( ~2 @6 `0 u% `3 ?' _$ M# r, z
;;a list of lists,
trade-record-one组成/ |5 r3 s" x8 F% @2 a- q
trade-record-one
3 J$ r; k, q/ e- D0 e* q  p& h$ M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 ]$ u! _/ `, _* y. X6 D( G
* l' J- h  a' _4 i3 D5 Z* @;;[
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]]2 f& q& @3 s0 ~6 J8 R
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 j1 P6 S4 M( a8 i' \& D9 u
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
& C' y7 K  S" I# Pneighbor-total
7 {, M; B' K$ Z- `, |! _% W;;
记录该turtle的邻居节点的数目
. z! F# @5 v2 B9 N2 {7 Ctrade-time5 N, ~% h" s' H# ^. a
;;
当前发生交易的turtle的交易时间
0 o( e5 S5 @) b8 l4 n3 Rappraise-give
/ E* p2 T! G& X. q6 r4 [) R;;
当前发生交易时给出的评价1 H9 X3 G5 b; g: r7 ]3 O$ C
appraise-receive
9 i& V5 @3 [4 p% h( g; A;;
当前发生交易时收到的评价
% K# w. q* K) [% }; q' u2 f) _appraise-time2 q. }/ C( u& k* e; i& [% b4 `
;;
当前发生交易时的评价时间
, L' M7 a. F) p' M- Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- ], a/ @/ z6 t6 Ftrade-times-total
& ]! U  p: H) y/ V/ @;;
与当前turtle的交易总次数
8 V/ F( D* a8 b) T9 W' A. E3 D9 ~3 [trade-money-total3 n5 t. o5 r( P! A7 d' f0 \+ P
;;
与当前turtle的交易总金额8 v- e1 Z+ h6 H
local-reputation# c1 ?& B( a8 i0 M
global-reputation% V9 d* E0 z& C; Y/ k3 K" D- O
credibility
  j' }, Q1 u9 v& N  q' G( k;;
评价可信度,每次交易后都需要更新' D, _% `) D# ?5 A. c
credibility-all
% o! z5 T8 _4 g8 ?; m;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据1 X  A$ h6 \! l4 r- y
$ D. E/ A; O& h' G1 g; z
;;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
" P- I/ r* J& Bcredibility-one" C" H7 K7 M7 T! Q% v
;;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; i7 E5 U2 Z9 `8 Q* n( U# l8 a
global-proportion
: i4 l) _5 G& K4 T+ M9 x: G6 Scustomer
  [1 L/ T  w' l, d" T2 f7 ~customer-no
1 }' c8 N8 u6 Ytrust-ok
! j' k) ^( P, I3 qtrade-record-one-len;;trade-record-one的长度; S+ m+ i& j$ i# {6 R1 U- I5 U1 m7 Q
]
' b; }' D* d3 S- a) J% q1 I' B1 L0 [2 ]
;;setup procedure* |$ j' f( \+ k8 Z- {

4 N8 Y  b: M" e' U  X: ito setup2 c3 x% H* \1 d! X) x. T

5 u' Z) H/ }: n- E) S; g) Mca

5 c3 C$ O2 q; f* a9 Y1 m1 ~* H, M& x3 A0 v# G
initialize-settings
+ ~4 |7 b8 e" @
$ {2 Q! k& l$ D
crt people [setup-turtles]
4 @; X! K& b+ Y
5 x9 ?8 F! u% O: f, \
reset-timer

( j6 n& @( u3 a. d+ n1 ]- _
9 `) \$ }: N! X) g5 n; h3 C% i9 d+ Xpoll-class

) N+ f  F+ e8 h6 W- A6 b9 s  z4 \4 O8 U3 {# l+ y
setup-plots

1 Y& k5 r, d  o" J
; _) `6 T2 n; N0 H0 ^& B( Ndo-plots

6 _! g) l0 V% t6 P- ]' S6 Mend1 R* f3 E6 B% q
) j1 U0 c' B9 \7 W2 Z4 y
to initialize-settings
# d. g! E. l! J0 P5 k5 N
  G# S4 ?7 o8 Z$ t" t3 }4 R* R: iset global-reputation-list []
, X6 H0 K. }7 l# m# ~/ ?4 c  c. Z! H' N

2 t7 ^4 d) z6 O% s. L/ ~' \3 _/ Zset credibility-list n-values people [0.5]

- l8 L( ^( U0 v! Q
3 B  x2 G; Y" o* ?) j) Bset honest-service 0
& h- m: v; G& R2 e: r% j

4 U# E. Y2 w$ g% y- l2 B/ }/ ^set unhonest-service 0
+ N" f3 Y8 ]& H1 O- _: Y

- r8 y# r  a) d! F- F0 Lset oscillation 0

4 T1 E) y! s3 o' }7 H9 W8 l9 `& t$ ]' J4 I. L$ d$ q& Y
set rand-dynamic 0
( c' q4 u6 c' _. V, f# v
end
' b& M& Y% O+ U2 B# g" M6 I( y3 @" Y
to setup-turtles
7 d' e8 \, y1 x8 ^& h; lset shape "person"4 h* w, f1 U& G1 B
setxy random-xcor random-ycor, y- m$ X3 e9 K! k2 g$ K) k. T
set trade-record-one []
. a$ d1 s/ @+ V% A
  m1 n% Z  ^) V4 g
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 A& s6 r1 N& {$ O* h- J
5 _. v9 F8 f- U% m% R
set trade-record-current []
8 M8 M, g5 `+ z6 i) E' N0 ]2 _: ^set credibility-receive []
. X* j$ {2 }  X0 i: G/ x' o8 b4 ^set local-reputation 0.5/ I# X1 w5 ]8 I
set neighbor-total 0
+ W% V( b. x0 Eset trade-times-total 0
& \& p' d9 i1 a4 v- X: sset trade-money-total 07 j! E/ E7 C- l, M( n- `
set customer nobody4 Y  w3 K" P6 h, n  r" m2 C8 S
set credibility-all n-values people [creat-credibility]  i# b  a5 d% s. g8 n% s; U/ Q0 w$ r
set credibility n-values people [-1]2 [9 n: V$ ]2 Z7 Y) d$ B$ _
get-color
2 n' }1 e! T6 _

7 y2 Z/ b7 _7 r( m; M! Wend
" A( u  ^; r' z8 m# R' o  X
( q, T  w5 X+ [6 Z  O8 g+ k6 U  yto-report creat-credibility
! m9 i0 q, a  f, D* f6 Mreport n-values people [0.5]( C) k# O; y( k6 H$ ^( i1 h# L& v
end
5 D/ d! \) R2 Q  A  O9 j5 Y% ?+ ~! L
to setup-plots0 |" V8 a7 ?3 c* e0 G: X, _5 N
7 _" t* P& W' u6 F7 m2 i9 L# W/ ?
set xmax 30
% T8 R) ]5 b# p& ]2 K
2 A7 v( \1 b$ ~' ]; \' W9 p. Q2 S
set ymax 1.0
3 B3 c/ \/ z) M+ a& `. l( \% M5 P* t
. w- x" L6 ~( Q# ^6 D
clear-all-plots
, [$ Z* n& q- k1 V' N1 D
7 W- \5 K" N# X
setup-plot1
3 Y4 H" e- r$ I2 n
* ?! {/ j) J9 D3 c$ f8 F
setup-plot2
6 L5 d$ Z" {  d" I
, A' G$ a. d: y( v
setup-plot3
5 T7 l: _+ N2 N- }6 H
end) h2 O0 u" k* l' j9 A/ M; P
4 p  o, }+ u# \2 {- O- S% A& s
;;run time procedures
7 z8 y! U/ }" @2 H- @. J5 H) K
$ C' [, S/ m& J1 R$ c" wto go
1 ]$ }1 K. [! i0 K7 k: N4 y$ B5 Y, L6 ~4 W1 M0 F
ask turtles [do-business]

2 k, S0 S7 `0 n& Y  O* J) ^8 Cend
9 E: ?8 u- I8 ?) j! [. Q) c; g- S/ B7 s$ S4 U7 M% p4 V+ a
to do-business
) h; E2 M. t! L0 _5 E8 m2 g

- H- t) A* o; F4 G, N3 w$ c3 b% i6 N9 j# e+ @
rt random 360
  ?, C7 T& V# E2 D' u, b  H/ s

% M6 ]) C1 g3 Y8 d" W% K4 Efd 1
3 l7 Y) U% f  }# j
# a+ T' @) J9 M7 f
ifelse(other turtles-here != nobody)[
( i8 b' ?. N2 b/ R' H

# d' e" X& o) v4 X. A; h1 N4 |$ jset customer one-of other turtles-here
9 b( ]' t7 ^5 t$ M2 X; E2 W& H) o

. i! c% Y  a& u& U: {& r4 H;; set [customer] of customer myself
+ U% h# ^9 h# r7 ~. m+ A

# U% h* U4 i, U! H6 L' z* y4 Oset [trade-record-one] of self item (([who] of customer) - 1)
% L, B1 o; \6 R' c+ X4 U6 A' Z. A$ T[trade-record-all]of self( q9 e! \& a! I! r$ m+ h: G1 F8 C
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: j6 p2 W/ ^& R* w" m6 T- K$ p. |7 p$ b5 A
set [trade-record-one] of customer item (([who] of self) - 1)
& _6 q4 n) e0 Y0 u/ f2 ~: {[trade-record-all]of customer

( s; @- i2 J& N- H2 [
; z$ G3 ?. a) Tset [trade-record-one-len] of self length [trade-record-one] of self

$ N- h& s- t/ f  Q) O& S  ?" V4 ?
; E9 K: O; A9 s  d" L4 h0 F; eset trade-record-current( list (timer) (random money-upper-limit))
5 Z5 r0 J" l+ [2 R; I; S1 N, b
6 G: g+ P2 L8 e
ask self [do-trust]
; T' U' V7 w% ~3 X6 F$ W;;
先求ij的信任度
: \6 R" O% q/ }4 T
- C% U. `! J. z, U, t7 b: oif ([trust-ok] of self)4 }2 S- u( }& e! a' f7 r2 p
;;
根据ij的信任度来决定是否与j进行交易[" e9 |$ d5 Q/ y8 ^* @$ A4 H/ ~8 y; R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( x0 k% N& a) L8 t! C1 E( f& a; t
7 r' i4 `+ q/ ^  N: d) }; o[
. A. |: C- \* G
5 Q, m+ l  J; X
do-trade
4 V8 x  y6 r; z& M: m
0 ~9 B" a$ X0 C# j, {# t
update-credibility-ijl
8 q4 k$ [& Q3 f& Q( T% G$ k8 N
0 S# x, P5 v! l
update-credibility-list
# }# I5 o* Z2 M, a
7 u+ u. C) s& Q8 C9 b( ^1 D$ {
! L$ k, n& m: @8 {; ]+ P. }
update-global-reputation-list

, ~( Y+ P7 d& A1 O8 S9 P# C$ w
3 _% J- w) i& M) p0 ]8 {poll-class

* n; ?. |& D: d8 N7 T: G3 E# Z% W
0 p# k4 U4 l  ^get-color
4 r) N6 d  v3 {) O; W/ d

0 {3 R0 A+ w7 d& H, |]]' _) m% _$ \5 f
; w! k( F1 A; o0 W
;;
如果所得的信任度满足条件,则进行交易  M3 U' C2 O6 m! n/ l

- p2 q+ ]4 {8 g& q: [3 c6 a2 }" N0 V& p[

. U- i! m7 b$ x* m' N6 `6 v9 x* j8 E" v3 ]( }1 P% j
rt random 360
  a0 I6 k3 e- M: ?
* r( M2 C- N0 R' \7 c
fd 1
* Y4 n0 u' e9 R4 J) p3 ]

! W5 B( K! O* D; C4 e]
4 e+ _1 {& T1 O4 k" l( D4 g

1 }- j; y$ \( M# |% t, ]end
/ J  x1 N5 Y6 w& h( J

0 S9 y% N' X, ?5 e7 \* S1 Wto do-trust * a4 _3 r5 s' E
set trust-ok False
7 P. O( I3 G4 r* w# p: c. a5 o
/ M2 o+ F5 i. Y( l" i7 L0 \5 \2 r

5 k- B! R$ `$ ~8 `# Plet max-trade-times 0, M3 L5 ?- l: b0 A9 b
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# l8 T$ N! H0 elet max-trade-money 02 o+ B* k- s3 k8 R9 P7 L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 t) F  E/ P/ a0 q4 q3 ?5 Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 P5 W5 W; s0 S$ k
% B/ |, ~; D0 ~- g4 k1 V
8 {/ [0 ?/ |0 W7 d5 |/ `
get-global-proportion
5 J3 X( L9 W# l/ v9 ?# Ulet trust-value
0 l7 Q2 d. \# c3 v- A7 q9 W9 dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* U0 z5 R4 }. m, K  }0 V3 D+ W
if(trust-value > trade-trust-value)
) }" w+ w- f. o. s& F[set trust-ok true]: k3 X0 x  x( Z5 f: H
end  \3 N5 B/ I7 z, e& {
( z5 b6 `6 A& F" @* _
to get-global-proportion
) h# B2 ?& }# I( w; U/ F+ {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 Q& T" _+ B  u$ H2 ]/ R6 T7 z[set global-proportion 0]- o* N, _. S4 ]
[let i 0, s7 \, {8 D2 p- \
let sum-money 01 W# G8 D' }" b! P
while[ i < people]
! b& L! d5 X. o) K) T[% k2 ]1 j# ]# V
if( length (item i+ `6 Y  y1 t/ O% a$ w
[trade-record-all] of customer) > 3 )

) V; g/ Z2 z. M' X; y+ d; P[
8 d% K, p, O3 l" P% cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  _# n" [6 x! K7 D' k
]
4 O( S* y, C& L; D! A& R0 f/ J]2 j+ T( @2 _5 Z7 J+ b7 N
let j 0
) G+ a1 |* k) Y( c- F" ulet note 05 k6 k! f5 Y' J( m
while[ j < people]
4 c# X' d  t0 e; X) N7 ?" S[6 G$ \3 Y& N6 a+ d8 T
if( length (item i
& w/ s  {0 h$ [9 }1 x* g7 z[trade-record-all] of customer) > 3 )

/ [4 P' m1 {) ], |7 {+ S[
, @, w5 ~! n+ p9 s6 tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 e2 h5 g5 N! v9 U$ r5 H1 v' O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% J  q& a6 s4 _2 u  {
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- C+ F. r: r* q1 i
]
$ y: s! v! A" u3 P, _  v* ^: u]; P, f. ]3 c: H
set global-proportion note
. h  s* L2 w" f# ?7 x]  I2 K" h/ v/ a7 i8 o, [; P8 |
end" `- Y* M$ M- v/ o$ h& r. x( H1 ~
0 j7 k( t4 e* D& T! C  r
to do-trade7 |/ E2 e  g/ g+ Y, h( _1 Z7 D# b
;;
这个过程实际上是给双方作出评价的过程4 \% j$ P, Y7 g! K5 ~$ D( i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, I. Y+ Y5 R9 [% D% Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' ]$ z% ~' Z3 T" w* s, j/ r& ~+ ^# y) Tset trade-record-current lput(timer) trade-record-current( U4 a( \" Z% }7 K/ F' }8 C6 [% }
;;
评价时间
# u' i% n& D* m& gask myself [
7 @- J9 c" \' L( m& O* @update-local-reputation& S: {. i" b; H. \2 [3 p6 |
set trade-record-current lput([local-reputation] of myself) trade-record-current! d" [: i: A5 L3 @  k
]
0 p: T$ C6 Z3 v1 Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- W. R! `& B% E8 g;;
将此次交易的记录加入到trade-record-one' y  u  {8 L" n2 ~, G* y3 ~5 G
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 U  _2 @; ^$ X& |0 P) @7 ?let note (item 2 trade-record-current )
/ a% C% l' ?0 Iset trade-record-current
+ M: `, o7 Z2 h$ i8 P# ]) m* l7 q(replace-item 2 trade-record-current (item 3 trade-record-current))
1 C* i1 n& M4 H2 d
set trade-record-current. I5 {; ~% B; t2 n1 P
(replace-item 3 trade-record-current note)
$ X4 s$ s" p( _7 Z& o' S) D0 N& r# f8 C) C; \6 w; z
7 n1 D. H/ \& U* t( F0 R  Q# J
ask customer [* o% f% s5 u# T
update-local-reputation9 h# R2 J9 p) C; B$ P$ N8 n
set trade-record-current
* }- G% i; ]2 W% ]5 M/ t) P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ B8 Q2 N; a: d/ N* P% e; R
]
. W: s5 ~2 V* }
0 L0 M0 q" y( Z! R
' e  N4 i7 m. u2 j% C6 _# l! }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. D. `! B9 |+ [$ x8 g9 q, B
) h: U" Z$ X. b- s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# X9 O1 N6 k0 b1 G
;;
将此次交易的记录加入到customertrade-record-all( |; A; t& ~! o
end6 I4 D# _. f5 k/ [; N! D- c/ H

* n3 A) q7 h  ?) J3 I3 {* N! ]7 Wto update-local-reputation  P9 L$ r8 F" r) q4 I
set [trade-record-one-len] of myself length [trade-record-one] of myself1 j7 X% `; d9 J% w' ?7 S

7 g1 I# V# B" C. D) n' ^' U' o8 q$ p* G- ^$ _
;;if [trade-record-one-len] of myself > 3
3 I0 u+ |& A: V
update-neighbor-total* J5 `5 q$ v! Q  o0 ~# p
;;
更新邻居节点的数目,在此进行/ i/ b. _& S/ h9 T  \
let i 3
- p7 }4 i! i7 }& a$ Klet sum-time 0
% d4 D4 n0 \# E- S6 b6 ?while[i < [trade-record-one-len] of myself]& `7 ~* D* R! s& H/ `
[
0 Z. B( Y; c) B6 K5 hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), K  N) H& r9 N9 v2 Y% U( y* O
set i
6 i- |2 F4 U$ z: T, z: b* z( i + 1)
1 r4 u4 P1 M  k' H
]" C  E( y* F' k( W) F; t$ t  X+ G
let j 31 N0 G0 N" A4 t& N1 Z# r- {
let sum-money 0
5 E6 q4 e4 _$ A( W9 s# twhile[j < [trade-record-one-len] of myself]
; C) V& M7 b: R. H, q. }6 D# W0 W[
: q9 j. Z" {# B  Pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)8 T4 B, g% ?* T3 F/ h% h
set j
8 J$ s, c% x# ], `( j + 1)

4 v2 v" b" Y' b/ j, V]) W' e9 |0 A5 S+ ?+ E6 b8 g
let k 3
# }5 y& Z) Q, c; M8 F2 xlet power 0
6 e, G, F0 x6 E3 @: n. ilet local 0- d, b' c4 L% m& O* R" d% ]. B
while [k <[trade-record-one-len] of myself]( Z+ o* s2 z% d4 m/ A, \
[3 H0 F" @9 Q# V
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) ; |% H' k# l* e! z/ Z% _" j& G" o
set k (k + 1)
6 k3 Q( N, V5 a. M& i8 o) c]. m" @$ }* \/ i# y( K1 F1 t
set [local-reputation] of myself (local)' O. D( z/ o" C0 f5 }4 l
end
6 O+ [+ D) W% J# T3 b$ w$ B0 q( B/ Y: [+ c' K: @$ \
to update-neighbor-total$ u. s* B& [* \& }6 K
/ x2 ?8 H0 @0 y. e, L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: v) N3 c" o+ m- r. s/ M8 N
8 ^) ], q* j: r$ ?3 Y& v
1 I9 V) u, V( T& H; z
end& X: x: l$ A3 k1 ~; ^
/ \% ]9 f4 g1 D) K$ H
to update-credibility-ijl ! Q  h1 t# m0 J4 g/ r1 S( d

6 m) s0 I+ r9 x. Q; G9 W( {+ l;;
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。
/ W# R  l4 f0 f$ B% U9 p; U0 A9 J# jlet l 0
4 o3 v$ R0 K: w) `while[ l < people ]/ S$ u8 V8 j0 A
;;
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
, X0 f+ h0 {) J* O0 x+ x0 E[
( X: X  B! h: S/ G: l4 Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# ~- o* F3 @3 H7 v' V. pif (trade-record-one-j-l-len > 3)
% u! I: e) G4 x' V" E9 u[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$ F( w; G3 v5 ^4 B- g9 @6 A
let i 3
- a! x  `8 d! h% K$ Q8 _* P- m  Q$ Xlet sum-time 0
0 m+ H1 ?% a! `. {) }( z  Qwhile[i < trade-record-one-len]5 [* D$ F5 g- L8 E
[9 L8 Z! }. ^6 c! `9 ^% T4 v$ v8 X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  |/ |, U: u- Z, Y
set i
+ J; w8 A+ K2 n, J( i + 1)

! S: g% v9 [6 P6 |4 Z, v]
3 t6 h! C9 q' T/ r- Flet credibility-i-j-l 0$ N& Z) ~8 f1 U0 M9 I+ C4 G, l
;;i
评价(jjl的评价)1 _! {. l( v+ P" a
let j 38 b  E* K6 V2 O. F1 f! g! p
let k 4! E: j' w, @3 ]5 T" m, D' {
while[j < trade-record-one-len]
+ I' L  p# i$ e( I% f[
. j* t; K* I) f2 L. E/ d2 O. m3 Jwhile [((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
3 w1 S& }6 F4 g' s# J: Tset 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)
" Q6 R7 s8 g, w7 k! O: H& R0 n/ m. q- `+ S9 iset j7 o& E9 H% l4 @6 B# A: S: U
( j + 1)

8 g- x; ^2 g) O. r, h( u]8 _" j: F4 x/ m: i- X
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 ))# S9 p( K6 f1 J, u! ~
8 _% @" H/ r# w/ T# [
/ d- L0 y! l, c% n# I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; v5 M* W1 z. M& G7 ^$ K;;
及时更新il的评价质量的评价
8 Q+ d9 S! S% U1 C& Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ Z9 z2 \" Y' M  }+ _  ^set l (l + 1)
' e% `) a+ J5 P* S) m]
, B& U% R* L6 W& ^# `) h, o6 [, yend+ h/ P+ g! \4 E  q; X& g3 Z

- S+ l, {3 i5 g) `9 \to update-credibility-list) v9 B2 y% e3 {3 B) a( k# W7 h
let i 08 T, @; ]2 n8 [/ X5 D* m3 P3 M- _8 v
while[i < people]2 m/ H, X* F9 M- u4 u2 o
[/ c/ ^( ?: e6 l+ Y7 ]
let j 05 h& t! n1 J3 a( y  U1 q/ j
let note 0
/ U! }& R: }) Z# b" Y. Alet k 0! P+ r9 h+ Z5 y- I' d' i( x
;;
计作出过评价的邻居节点的数目
+ R% Q! q4 }& u8 {. |" a0 lwhile[j < people]6 m9 V7 P* y6 v$ W9 Z2 w5 C7 h
[
3 J3 j8 R* o! u, |+ yif (item j( [credibility] of turtle (i + 1)) != -1)
6 w3 w/ q4 }9 L;;
判断是否给本turtle的评价质量做出过评价的节点/ ]! F# P- X6 J" Z0 U3 m- Z$ d
[set note (note + item j ([credibility]of turtle (i + 1)))$ j. j; ]% W: n+ g. _
;;*(exp (-(people - 2)))/(people - 2))]
3 C6 ?  t5 l- G! ?% j6 |) b
set k (k + 1)+ m3 B/ c, N6 [5 _1 v
]. P. R3 r* O) V, S1 p1 e
set j (j + 1)
3 K1 ]+ l+ z* ?]
. i6 y7 N" W! H5 ]: C4 Z% v0 Bset note (note *(exp (- (1 / k)))/ k)
  T2 T! p% T! `set credibility-list (replace-item i credibility-list note)
5 q) n5 i1 Y- [- x- G4 t7 g) zset i (i + 1)/ I9 I5 H+ q5 w) x- ]
]5 C' \/ B. X/ Z
end
  v8 K# J/ c6 @6 b4 y  i4 P! v7 u. e
  S3 f$ F3 Y0 U. y- Uto update-global-reputation-list$ D) B4 _' y0 M3 N4 b8 G
let j 0& X/ c$ P& w$ h' }7 q6 E3 G% k
while[j < people]  X7 e# K. V/ t
[" a/ v1 ], Y) J9 l8 P! z. K2 @
let new 0
- L) I4 s% S+ b/ q. L& N;;
暂存新的一个全局声誉
& X4 N) [) S2 y7 [* glet i 0
2 c. U. r5 {. K& f  ylet sum-money 0
+ `! K  l# x$ A/ l. d1 _let credibility-money 0* c5 @7 W* C/ l( e+ Z0 W0 u7 \
while [i < people]! N$ ]3 d! K  c7 h3 u5 d
[) f+ |/ G0 T% K# A9 {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( }3 s7 a0 h- L8 J& s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& D" u* T. q) L% D" Y# [set i (i + 1)
, v8 n$ M+ G7 l) t]
0 j4 S* ?7 z" ]. zlet k 0
0 Z& h5 W+ W3 D5 D7 S, Rlet new1 0
0 C3 c9 Y; t  p9 ]  \# wwhile [k < people]* n; S' P. s7 v  a' k2 w
[' p* v# ]  v; ]6 c
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)
0 I$ d, b# Z8 |0 F$ jset k (k + 1)
% ^% ]* r) g9 B" v]; Z+ t! I; e3 Z6 ?) V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ A* Q7 I$ `6 G. N* P7 ]* X. jset global-reputation-list (replace-item j global-reputation-list new)" j% ]3 B' \; K& c! Q
set j (j + 1); V2 R# o+ D+ D; u
]
! B5 J' I# d/ Y; hend
/ e$ T2 ]1 u+ n+ _
$ v& _$ {0 [. e5 a9 _7 D, T$ q( q0 P8 d% g; P' g/ ~0 Q4 I

* D0 @9 I9 Q, l2 ]  X# A% v4 }to get-color
- c  Z; f; a4 u# }1 o, T2 G' A' U, E8 u3 p0 W8 {
set color blue
$ `0 j  O2 Y! |  m+ [
end6 {! ~3 Z3 h9 C& s$ H
7 h2 k9 H  O! r2 b
to poll-class
# B& ?" m( o5 P9 ~% N+ dend
4 Q; F% y) w0 M' S. t" _( v& N, i1 \! G  `, m7 W% v3 Z, Q
to setup-plot10 q  w  {# w5 @* g# |  G
* Q  B# q, N( f: \! i
set-current-plot "Trends-of-Local-reputation"
+ w' T  w& V& ]! B6 b

) T  V4 o8 m5 `8 Hset-plot-x-range 0 xmax
4 f1 a. p& {$ y) f1 B: U+ G
7 H* w3 M2 s0 j, e; }: L. F# r1 Q# y
set-plot-y-range 0.0 ymax
) y- o: n9 M/ \& ~, s) C: O( X
end1 g" U2 Y/ }& Z( b5 Z

* \* w9 Z# `2 E$ V3 _) W" yto setup-plot21 Q9 q# U2 A0 U& S' o

6 P9 D) y/ |/ I4 d6 w1 ]9 X! |set-current-plot "Trends-of-global-reputation"
3 q3 @# ?8 S/ m
$ J2 Q3 c- H+ l7 ?# o7 K
set-plot-x-range 0 xmax

; K- Q8 X- N2 i: x" ~: W. ]2 F2 Y7 o! H# s; e) X& u% ?: n* ]
set-plot-y-range 0.0 ymax
: w2 D8 O/ Q" x$ |8 g- w4 s
end. t$ H1 f& z$ y" U% h
8 [; I' B  U0 U3 k2 O. v+ Y$ K1 Z( o
to setup-plot3: k& u4 H% ?8 k. d4 Y0 U: b# e6 }  c

- ^0 B- ]' H/ B3 ^, sset-current-plot "Trends-of-credibility"

. _1 `; k& `5 [$ \2 f  n: F" g4 k, ^
set-plot-x-range 0 xmax

% k5 u) ^/ [5 G" Y( S
' `3 e1 ?2 [8 z) P! f# nset-plot-y-range 0.0 ymax
6 W6 s/ Y4 n* \
end
; ~% n: ?9 N8 I' p4 C# O) s  V( u
- `5 y0 _# j; W  X6 I" Xto do-plots
4 J- W3 W6 p4 oset-current-plot "Trends-of-Local-reputation"
. a' u& h/ O! _5 `set-current-plot-pen "Honest service"
9 p: d" O5 D( T7 Q; Z: qend
: [4 C, a! g  W5 E' Q( l# g) K/ j7 l: e6 Q0 F' y2 V5 a
[ 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.
( r  |1 Z& S4 K9 F' T7 Q9 t/ I( n+ W7 O# o, 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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