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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:- u1 ^- C0 w5 H7 ~7 O
to do-business 2 f6 Y# V8 i& `* @
rt random 360$ r! u2 r; O) B2 Z
fd 1
& q( x, _$ Y- k2 J ifelse(other turtles-here != nobody)[
; L: b  a! \$ C. A; n, y$ P   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.
: K  `# q" m& K8 ?/ k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 t, l/ e" A. I( K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* ^6 K' c5 P, [2 T: I5 M8 h7 U9 O' |   set [trade-record-one-len] of self length [trade-record-one] of self8 j& B7 G7 `7 D) ~$ {- j
   set trade-record-current( list (timer) (random money-upper-limit))  g# f3 F/ u' [& J# k' p! P7 R
2 i9 A& ]4 c' p) {- O
问题的提示如下:5 ~4 g% h4 u: ^% \; |. n5 q
# u5 @* C$ ^' u
error while turtle 50 running OF in procedure DO-BUSINESS" x# \& k* M& }: ?+ y
  called by procedure GO
8 j9 f% x% L0 QOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 j6 C! C4 Z+ \" ~, I( A
(halted running of go)0 Y) }) o" |& W" w% V; d

6 b; b; g+ l3 G  D" B/ m4 Z这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~" j' `; P9 d9 Q6 w. Y( R: l
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
( L9 j) s7 {9 w5 y' f- L+ M' D) v  Yglobals[' _2 L' r. e2 r2 {# G
xmax, a, v3 x( v3 C5 F5 p" ^, N5 g  O
ymax) Z. J' o6 [5 N/ e
global-reputation-list
' }( D5 c$ |( F9 ?1 W6 f+ X) W; O; |: N' T
;;
每一个turtle的全局声誉都存在此LIST
) `4 q# m- n5 o6 ]+ ^credibility-list! X6 l$ ]3 B) @' {9 }( w/ B6 k
;;
每一个turtle的评价可信度: @4 Q0 j. ]1 X8 \
honest-service
; a; v$ M: A4 Qunhonest-service
2 k) k3 ^+ g% C2 K7 ]2 @oscillation
- z* ?* W0 C! ~7 b  {rand-dynamic5 |5 d: H- @7 U/ V; B: U! W' y
]
' U1 c6 j- j, H- K
6 M$ b7 e, @* x$ q( N- Z6 zturtles-own[4 V1 f, `! S/ I) S0 ?8 D* v
trade-record-all
# g) V0 l) y" T: d; Z+ z. I;;a list of lists,
trade-record-one组成
" t' y# v2 F; a2 G$ C, Ytrade-record-one
# E% h9 J% J7 C6 ?5 B1 r- @& i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- |7 f$ a) q2 A

& A6 w6 {: Y3 ~* G/ L$ 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]]
5 m# L; A/ u, m% I% f  G/ 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]
. O, g) F+ K; H" T" ocredibility-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
- l1 K3 v$ V; l/ S( ?" J# uneighbor-total# B; V  @' r6 u  K; y0 w
;;
记录该turtle的邻居节点的数目- h+ e* V! Z5 ?$ D
trade-time
+ u( [- {" d6 r% [( \) c6 p;;
当前发生交易的turtle的交易时间: U. c4 I# w0 l
appraise-give
! g% s7 T1 l/ k: O: y3 P( |;;
当前发生交易时给出的评价$ ~4 A- l# O' B) f/ C4 c! }, t7 ?8 |
appraise-receive+ i4 S' D3 t. @2 g+ M' C& z) C
;;
当前发生交易时收到的评价
6 S$ K) Q( k' tappraise-time
3 k5 x! I2 X  V* Y;;
当前发生交易时的评价时间
* J, R, e! ^- {* hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# _; U7 C4 T$ ?1 \1 S: ttrade-times-total' Z7 a; S% h5 D& R6 u
;;
与当前turtle的交易总次数5 @- B3 L3 F' p8 @# C- @
trade-money-total- L+ I( b% o  d+ W4 C3 l, e
;;
与当前turtle的交易总金额
* u+ a% L- S7 x% t5 Ulocal-reputation
. r+ g# j- u* E, P% {$ i9 P- iglobal-reputation
) f9 t- A4 N4 S% v+ i, c, ucredibility
( j: _1 h4 P: \5 z, C% @6 `;;
评价可信度,每次交易后都需要更新" p5 K  v' I, C8 @
credibility-all/ W+ c3 F3 c* Q# `8 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2 w' P3 N- [$ K: `7 e- t

, C" y9 [+ n, w( 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% d1 M# w0 X* Q/ ], I+ W* D5 u! n
credibility-one
2 v0 n; S% I, ?& y2 P- [;;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
/ q% V& _6 b( R, f6 nglobal-proportion" }5 J. m6 S. b% [7 E
customer% ^. s; `2 i! F- b* J
customer-no$ M/ `1 M  Y' G6 i
trust-ok
4 {8 W; B) l; D& N; Etrade-record-one-len;;trade-record-one的长度
1 W4 R) g- c; x0 _1 K]
* N! v  a" F* U- N+ [# W1 b8 D" W' D+ G- L- H) T! X7 D! k. a
;;setup procedure6 J( I6 O$ I+ s; s

5 c5 }5 n. L2 {3 \$ q8 uto setup+ @' g$ r3 D# E. N& O

, w, q3 A3 @$ h* Wca
7 d4 u& |2 g1 o% y) Z3 K
: a$ {6 a3 n' [4 Q9 `
initialize-settings
1 N. Z* B9 P5 F8 ^3 N: P
( g( L+ P# W6 L9 k
crt people [setup-turtles]
5 ?* t) X  u; k- d
0 w& K2 P+ Q- q8 ~' W; A. _8 e
reset-timer

3 }, C3 `% s7 |; p* y2 m! t, k4 L( Z0 V: _/ t7 [
poll-class
3 K* K( U" b  Y% D9 k& m

5 V1 V- w4 k) q2 _/ Y! `setup-plots

4 {; x+ C, C$ o# I0 J0 p( X5 k1 M; a3 M5 a' {. `; i" i
do-plots
+ o2 M& i; ]% Z5 N8 D* @) i
end
4 }) e0 \0 A% X
- }8 n# _7 S! l6 j' o. mto initialize-settings
8 F+ b  b6 A1 K7 G6 s& s/ }
( g; C' Z" E9 q7 O8 Xset global-reputation-list []
+ M6 j# Q4 Y2 a! f$ Q

, c& m. [, e4 D2 U$ h& ~4 C8 zset credibility-list n-values people [0.5]
( j2 F( r( P' s
" j5 }) D: @  }5 w
set honest-service 0

$ Z. f9 k6 p: [) k# d7 u/ B
/ N- n+ R' B6 A$ H, T$ Bset unhonest-service 0
; Z& s: P# B8 E5 Y, Q5 K
0 a/ A4 I* r  f7 I% i$ C
set oscillation 0
: i3 F+ P( F* W  U, H
, I; {8 g7 M' D  P6 h& n' o* a( Y
set rand-dynamic 0
8 m) B  F0 k8 h2 H# m8 v. d
end9 V  v7 E. z  o( `6 s9 z

+ d- B( `' k) \9 p/ Xto setup-turtles
, B8 U" G5 p: o0 A! _4 C0 m; oset shape "person"
0 H" i5 y" ]) l) M# t5 Q* hsetxy random-xcor random-ycor/ L1 a, ?, M4 ~& d
set trade-record-one []  o, X! R5 @4 c9 s
- o: s, [# f* R+ d: d
set trade-record-all n-values people [(list (? + 1) 0 0)]
. ^6 @1 I, t4 c1 O4 K) e# v) a

8 R* @# ~( |5 ?. P1 E, G( Xset trade-record-current []
" R! S& e3 z6 @9 yset credibility-receive []
* `, D9 J# ~6 ]" w$ @. V. ^set local-reputation 0.56 ~8 M( {: h+ j5 W8 c
set neighbor-total 0
! P' `6 Y. _; E5 g# Y3 C% Q8 `set trade-times-total 06 j7 @2 e  D2 s" W2 |
set trade-money-total 0
; W* p& D" C& r2 E0 }4 p7 S, I+ g  hset customer nobody3 |  x, \$ n) r) l
set credibility-all n-values people [creat-credibility]
# a* t1 u& O+ W; tset credibility n-values people [-1]
: {) e2 m4 |$ J, G0 t4 _, o# g( Z& tget-color
- n- c. R6 a) B* t3 D" p
" Q' ^9 \8 @2 J  C' ~  Q/ l
end
/ {0 y: ]  u0 U/ m, J& Q. Z' A* P2 x5 ^- {9 H
to-report creat-credibility
# u$ |& O% p' x; l6 qreport n-values people [0.5]
" j. Z/ r2 B5 p  uend5 X- t. g2 n3 i( U

# F% }: U, ?' mto setup-plots% k  ~+ z  H1 N; H9 `

* n  s0 u( ^5 ?+ H% v" w2 u1 Kset xmax 30
6 ]$ {* c2 N# a( ]3 x

7 y3 v5 O( W& P6 Nset ymax 1.0

! q0 {$ _: H$ }: B  _; D6 {. _' ^+ F
clear-all-plots

2 f8 r4 O" H4 o* J9 y  j- d& h9 G7 R& U0 w) _; }6 ~
setup-plot1
4 h# L+ R2 W5 v7 G

; r7 V* s3 b/ K2 p* ?setup-plot2
, \7 j$ L# F' m  g, ?2 I
+ y$ u) n7 w7 |4 Q0 M5 K2 p0 K
setup-plot3

$ w" X/ a' C% f1 ~  ?5 Vend
, `+ F' `* }2 ]3 t$ i* ?& R5 s0 \9 g" x7 d& i- [
;;run time procedures& P5 [' \. `$ L" _
6 [9 f" Z  V- f6 g5 y$ k
to go8 m& {& p$ u5 z2 A  B4 A4 G

3 [2 L# i. c# C3 P4 e" aask turtles [do-business]

; }8 ~4 f* v8 ?! ]! U- tend
" F) N/ h  u- t8 ?. G# q
9 q% g6 k2 P6 E+ B, G5 ~to do-business # Q& c* ?( ~8 W0 _1 d. l: E" e

# n# O2 Y1 {7 u/ t: }0 [  t. H( v
6 m6 L0 a: Z/ r# Drt random 360
* t2 |; U+ n2 D8 h5 q
/ v' h0 W6 x0 A9 \" C$ }
fd 1
7 i* T, N! w, J$ V1 G5 n; a/ t
* q  E/ J/ ~8 _2 g: G4 p
ifelse(other turtles-here != nobody)[

1 |  {( ?. Q% q9 l; h5 m: J; e) |  c  U. h8 D
set customer one-of other turtles-here

8 b9 g2 g2 \3 R) G7 x  q6 p: Y. ^* I) Y0 f' \8 k. ]
;; set [customer] of customer myself

; [  m# _+ k3 C0 L: s
6 N# U" ^" d& b  J( Z' i0 W( P2 Uset [trade-record-one] of self item (([who] of customer) - 1)
7 r* p# _1 Y7 w[trade-record-all]of self! l0 X/ ]" i$ [! O% d
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% k, r& s/ {1 q% j! z; O5 t3 y
6 d( p) \9 Z( I) g7 M* k+ k# o- s
set [trade-record-one] of customer item (([who] of self) - 1)) Y9 P7 L9 N1 R$ l( m
[trade-record-all]of customer
/ F& B+ z+ l; }3 u

* K( p  Q2 }. g- ]set [trade-record-one-len] of self length [trade-record-one] of self
" E7 m" ?6 Y  {% X) f" z2 O

1 `  N* f( `6 B$ j" b7 gset trade-record-current( list (timer) (random money-upper-limit))
" c6 K* v2 O$ q, k) n
3 [: V+ U- y$ h
ask self [do-trust]5 N: N$ V  e5 _
;;
先求ij的信任度, b! v6 }/ [+ `9 Z2 q/ H

; w6 v# v- G/ [9 Q4 A: t2 ^if ([trust-ok] of self)" x; T# {% C1 v9 D5 K. W
;;
根据ij的信任度来决定是否与j进行交易[
+ H* l# h1 K3 i0 e0 Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- M& x: n( T+ X* t! P0 x6 y" t

& E4 H7 {% N) W7 e1 d4 g2 H[
0 R; @# S; M$ y- Y. s0 |# Y
: U( t; C8 ]" `9 b% \. p# l
do-trade
- o' s! Q  @8 o8 V0 \6 R9 j6 W
  D& C% l: N( C5 r, m  T& s
update-credibility-ijl
3 r+ ]; ^/ `/ e* s& k( }
/ o3 p. s2 y, u" y+ T. s
update-credibility-list8 B4 Y, Y5 E) A6 W$ ~6 T
3 ~# [* H2 a* }, M: l
7 n* y7 P. }% X- M3 P1 d: L
update-global-reputation-list

4 [; i) x6 \! ?. C% j) {  ?( l" T
4 b2 u! p& {4 Hpoll-class
/ d- R7 n) R4 p2 a
  c. Q$ |- ?6 P$ g( ?
get-color
( B7 W; m/ E5 M
, U: i; F* Q) B. S3 }( p$ H$ }
]]
# c1 D4 X: G; x9 {* \. L# N2 x- T/ A9 s9 {3 }4 d/ k9 ]
;;
如果所得的信任度满足条件,则进行交易
; h" q* `' c9 s5 C' s! O4 _. G; V) {$ ]- {: s( }8 N
[

* F! X- X+ Z/ N( B; V/ e/ Z- `
4 U5 k( J9 ~+ X2 ]rt random 360
+ T, S8 h# q1 I: A' v  \
9 J3 g7 R3 n4 s
fd 1
2 t! i% l1 \0 E* b* s

: E( H5 N+ U6 t. z/ _0 t]

7 K+ D1 ^# J& ?' o0 D; S
( H+ S3 |2 X; K/ Gend
- c" y, w; \& o0 S/ ^; \
% z) l; Z6 e5 M4 j
to do-trust
7 p4 l. J4 C- G, W9 v( w" M" Nset trust-ok False
  f( I6 N* h7 L) Y) |8 @$ R0 R, s
- @9 M. }+ g  k' a. W

* A/ n& M: d, R- f( ]! llet max-trade-times 0- O. d8 W) T$ t, N' i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# h. }, Q7 h9 F; C4 d# n0 |! b: B. Slet max-trade-money 0- O- c$ @! O7 v5 x; ^0 K/ Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! i/ |. Z2 L& W- Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 p; o) p' D2 q& c" o8 |+ p
+ q* z) k/ X  C

  c! Z3 T# V& J, M) Qget-global-proportion
4 e/ u8 w2 K; J+ U: mlet trust-value
3 L, V- P" a2 q% T, o2 s+ llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

/ d9 [+ y8 V/ J; O2 D% E. U/ ~if(trust-value > trade-trust-value)# H8 `* Z' [, u, G# V0 z# f& g
[set trust-ok true]- Q3 i" T$ {$ N( g. B0 l
end. N4 a% ~, i* T
9 k6 G# T) F) P  ]
to get-global-proportion
( s& I# N" t/ V& S1 @. N6 \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! R% B! q9 Q# X8 e+ ?. f[set global-proportion 0]9 l$ j' r7 N4 ]7 d2 ?% w
[let i 0
3 M7 B, y" N4 clet sum-money 0# m9 P# x1 c  V  P8 P
while[ i < people]! a9 J& E6 [6 I% O/ f: \& q
[  O+ G5 g& }1 V/ k
if( length (item i7 K0 s3 Z$ X6 O
[trade-record-all] of customer) > 3 )

/ T3 v7 R3 w/ F1 Y7 ?% O) ^[
0 d4 \2 g- C' g2 M) [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ v- I' e" _7 k2 J1 b3 D( o
], n% g& d, A6 C% }6 A
]1 Y4 I; f# o) n
let j 0
$ ^+ k# F* m5 s1 u+ @6 k" Hlet note 0
% V4 [+ U2 ]0 L, _while[ j < people]1 p: i1 i2 [( L9 \5 X; ]% f' x
[
! n( m( J; k/ z# O5 @( l8 |if( length (item i% ^# o1 k; d4 j7 l+ A
[trade-record-all] of customer) > 3 )
: C4 N+ w' s: |' P7 W- Y
[
/ ]( _+ @. z( t; x: E/ r: ]4 vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& q! S) y, L9 A% Z# w6 {6 q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! D7 G, w7 Y& G6 a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( y% l. ~. k3 Q; @. [# A
]* z/ O* B* }2 ^# H* U) l- M
]
& R# k- A3 J+ jset global-proportion note
* |; O+ G3 _' b2 F" ?8 B]7 s: A) i7 t* ?4 v8 b
end. y7 t4 u0 U- S0 s  p

' e$ I% o5 ~% ?5 I; Yto do-trade- M7 x9 o0 r: u$ r9 ?# }% Y4 L
;;
这个过程实际上是给双方作出评价的过程/ j/ k: ?0 L: ?; h. [* F) [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- G6 a& @' b* _9 R9 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* T% k. q4 C* `1 }# P* J
set trade-record-current lput(timer) trade-record-current/ L3 ^+ w9 f  ?$ G; R& ~% z% B
;;
评价时间- A* k1 i7 E) S
ask myself [8 e  A6 n' t& X8 z4 r7 D4 e, Z
update-local-reputation
- j3 w: \, p% B# D: F, q2 g" iset trade-record-current lput([local-reputation] of myself) trade-record-current# Z/ z6 @6 C; u8 I$ e+ F& |: C# U1 A  E
]6 u3 [( B* r( b5 F* z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! U& F; m7 r8 Q5 {- v. _;;
将此次交易的记录加入到trade-record-one4 R8 J- @4 D4 h7 ^. J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ n! O& w! G8 W4 i. \3 N: {let note (item 2 trade-record-current )
$ Z" J' i& o  _8 v  [set trade-record-current
9 w0 q; Q+ C1 E% c) f  N; m+ n(replace-item 2 trade-record-current (item 3 trade-record-current))
, V2 b/ \. x& e3 B
set trade-record-current
1 p+ E/ s$ O2 T(replace-item 3 trade-record-current note)1 p: \! A0 t* Q- O6 {1 q5 z* a, ?

$ N3 L% S9 Z9 y0 l( A1 V, B

: j: r. L% ^, _9 i0 fask customer [, K: G, v& \# _0 r- @& K5 I
update-local-reputation* U/ B* a+ I) B% F: i
set trade-record-current
' W3 k0 R5 l: K6 \. z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 C# X  L1 n; L( G( q0 y
]
0 z9 S- G" F9 C& q
6 f' e; U' U5 H9 [. J8 f" f7 }+ U& S- X
# J# C% H/ J( i0 i  S9 `, U& Z* y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 S0 i4 `, b- j7 e5 @0 s
8 p- o* s/ k) Q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 @0 J( n+ P" }& t+ o7 ]6 S
;;
将此次交易的记录加入到customertrade-record-all
/ Z2 w5 I8 j3 `: `9 Hend6 P* x) H  E6 c* C6 c% }
0 M- O7 G3 A1 P  h# f7 Y& j( z
to update-local-reputation9 i/ b: q6 Y) P& v: g2 H
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ O3 i- H1 S% N4 o3 d1 p  s' T) D& |7 M+ k3 m, z+ O, E' _
1 J6 F& H* M* Q; [- s! g
;;if [trade-record-one-len] of myself > 3
! j0 P( E+ ?0 x8 B' s& Z/ e$ P
update-neighbor-total3 {: |3 m8 m9 o  J+ }2 V8 W. h3 Z
;;
更新邻居节点的数目,在此进行
* G) i1 n$ ]( G( E( Q6 F5 {- K3 {let i 3; c! F* k8 Q3 y. {' ]7 {7 ~
let sum-time 0; b4 o( n; s6 x# B
while[i < [trade-record-one-len] of myself]
' G1 i- L1 j: F, P$ a[
: U" w/ B) y( b/ K% Z& P& W+ bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): B- t! t! W2 K1 `5 X4 Z2 P
set i/ Q& R$ f  E4 Y5 J2 |" U
( i + 1)
; x: V2 v+ X1 ~' Q3 a# Q0 w
]7 ]3 I4 a0 k- E
let j 3
; P" G  r4 o; d5 `  Y' U+ q: Slet sum-money 08 o1 p( Z  N- F+ s. T& o5 o
while[j < [trade-record-one-len] of myself]! n9 Q' n- C! O+ y5 r/ m
[
6 l' V2 c* V8 h2 i5 A5 wset 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 X# L9 r) X* }, [9 V6 E4 i+ Vset j
  D: Y/ C& |1 \! R. ]8 a( j + 1)

- ]5 F7 y7 G8 ~7 J: {3 Z1 B8 []
# O% G. B1 F  H( x* c: wlet k 3
; u: {& M3 Q2 z: E! V% f3 }9 |let power 0
1 E2 h- j; }' }8 \; M! _5 elet local 0
8 }0 ~% V" q5 D" h* G; ]" V! pwhile [k <[trade-record-one-len] of myself]
; `4 {) D& ~" M/ C8 F' F  r% v[. ?. X3 _, K4 [+ d* ]: r
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)
1 h6 a( t% L: a; E3 iset k (k + 1)
& x+ x3 l, {7 v  O3 N/ P]: u' R' D! n& r, N. i+ R- \
set [local-reputation] of myself (local)
1 c+ [; I' p3 n9 G  }: S4 \end
. X, u5 u0 J1 {. b4 `' p
7 L$ _! D0 U5 t0 f/ B/ g. ^to update-neighbor-total8 p$ C+ F9 M; ^) j! O
" t2 r6 \; {2 F; ^2 U2 M: V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ ^9 }) Y: `/ {

# t8 B+ `# t. G, R& a: D
4 O! V- }5 k5 ?: M) x
end
" [% N! p& ~" R0 Q. N5 _6 e/ d# m9 M0 x8 o" T& z6 o
to update-credibility-ijl ( V/ g3 p, F) ?# y2 }5 K9 M9 ]

7 }3 V6 r2 a& r  {: H5 l, x;;
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。
" e" k: u0 |9 ~0 ?- q& s( {7 klet l 0
- B  f9 f" @- lwhile[ l < people ]
, ~8 b% L  g- ?4 k; 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
* a- M6 ?4 u' o[; k# X: G6 y, c  ~6 S4 n* }, E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; v- {( V6 g1 W  d' J2 pif (trade-record-one-j-l-len > 3), l5 X+ S% p, ^" ?
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one5 J$ M; e0 e9 h- Z+ ]3 A
let i 3
$ I7 G: b6 K% D) ^let sum-time 0+ Z: l- t% P. @8 I
while[i < trade-record-one-len]' w) i( g% s$ z
[
) U$ g: h7 @4 h2 o3 F4 rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 J+ d! ?" I- W2 |5 z0 Yset i2 ^0 I' A2 X7 ]  K& i
( i + 1)

, ?% k9 D8 c5 _]
% D0 {- _' G2 O! Z) M0 ~let credibility-i-j-l 0( C* E: ]* S% a+ _
;;i
评价(jjl的评价)7 g2 X8 w6 H: w) Q
let j 3
+ l, u+ }6 N! \let k 4# l9 a  Z5 w0 N% Z
while[j < trade-record-one-len]
$ `& C, }- d, b" [- H! P[! D/ A0 d- e/ D1 y. v1 g( s) d, c
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* K) I8 q1 R' T7 y
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)
' Z+ T& Z; I. v' ], F8 F! E4 vset j
3 Z( p" i* ~5 D# n( j + 1)
+ \" \2 l0 ^: r0 [, G
]8 O* T3 f' X5 D9 c2 K( K8 q* g% |
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 ))6 L  y1 O; n1 t+ M; n+ g

$ |+ ~/ _) Q# o/ y
8 M* N5 O3 J8 d+ ~- U0 r$ O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). _/ l6 h7 E2 ], y1 p# X1 B
;;
及时更新il的评价质量的评价
; [$ _- M/ `. o. v/ C) N  ]4 Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 s4 V7 X# o1 @& r; Nset l (l + 1)
! A3 |8 x- x* ?]
4 F# Z& D/ y) Fend  X; H$ H7 l% p+ O9 V' v+ b

, ?0 K9 q( q6 g" I. t# h# Mto update-credibility-list
+ \5 j) ~/ `; c1 R2 e8 x$ @0 Zlet i 0. W+ B9 c/ Z9 i, U
while[i < people]6 K3 f$ y  Z, h1 |* Y3 w: {, `
[8 i) q. R6 g* V5 s4 ?
let j 0
* K( T- d1 j4 q" D. ]let note 0! C% x3 q& F  S% O5 H+ U" L
let k 0* h. X. A& h0 y0 l# B9 P
;;
计作出过评价的邻居节点的数目
3 D9 `3 I1 g0 M* ~while[j < people]9 K% {" ]3 j5 }
[. X# W+ w1 g1 k' Z9 C
if (item j( [credibility] of turtle (i + 1)) != -1)
2 R- A* U( |4 f;;
判断是否给本turtle的评价质量做出过评价的节点
7 V/ c$ f6 S* \: x8 S[set note (note + item j ([credibility]of turtle (i + 1)))
( K% d- z5 I' f: J$ `# e# y6 _;;*(exp (-(people - 2)))/(people - 2))]

, q; p$ I1 q2 v" m, ]set k (k + 1)5 T  Q( {$ F/ l; U
]
, d4 T% a: K  T* ^% F' aset j (j + 1)
8 b" r1 ?1 D- m" H]
6 _/ x: h8 p$ \& B0 V& H' m" vset note (note *(exp (- (1 / k)))/ k)
6 k7 q- _4 T. a7 A1 p9 l6 @  wset credibility-list (replace-item i credibility-list note)
0 j5 G- X) x: Y( \- Eset i (i + 1)  D7 K. A) |5 j. c5 e& Y7 F! [" H: M
]
: x6 p( ]% Q4 A' ~+ r; F9 rend
6 z  s5 L6 k! }& l$ Z1 r; W" Y; p3 Y' t$ O! o* ~
to update-global-reputation-list4 s1 r) y0 b9 C$ |0 v3 ?# J' Q
let j 0
. N0 o- h2 i. `0 Fwhile[j < people], b  I7 r8 h/ T% h. q
[: T" W& V$ C% \/ [
let new 0
" S0 o  v. V4 }1 s;;
暂存新的一个全局声誉
3 x, d4 W& d' ^  S9 {2 z4 Tlet i 0
8 e+ T0 I% v4 B3 s4 V$ llet sum-money 0
/ Q& g& j( e' K/ x6 \let credibility-money 0
: N! t( g/ C0 O1 \! _1 i4 xwhile [i < people]
; P! `# N5 o* B* p$ s: C) V[. D$ U+ \6 g( [9 z# D) _7 H
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- d" h0 k" ?1 ^' m# ]4 [set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 ^6 G* i# k% T& Z3 n( X8 ^
set i (i + 1)! Z1 q/ \( K6 o  i- I- U
]
" P& a2 J9 S9 e- p1 j$ {let k 0
3 ~4 S- f- E% V/ H. H9 ~3 D% alet new1 0- w1 w  Q2 z9 ?+ `# E% M1 q  `
while [k < people]
7 [; T! X9 S! {& `& _/ D[
+ s+ f  n! }/ ], N% 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)
9 L( l- [) s, D' N- Tset k (k + 1)
& k& @" {  q" k+ E: ^6 Q; ]- h]0 ~1 Q  n) k$ G: Z  s+ K( N& h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / @/ y& X% O2 D/ i) @( _
set global-reputation-list (replace-item j global-reputation-list new)
: h* G% g" u% B9 S) Dset j (j + 1)9 Z7 f3 d4 n* W$ H7 _: h7 c0 ]) j
]. x5 J& M/ v. W# F+ l  |2 k$ u
end+ m% |, {% J' ^

8 D( a* i( T) m- n% k) _! Q
3 i  M' U3 F# J0 ^+ S; G/ {+ \
+ D1 p% m5 X0 o3 _- {! @% lto get-color, C/ h, U& y6 Y
1 s- O: i0 u% v9 s
set color blue

# c: e* [0 Q- S# a2 bend
$ e  L, n% ], Z- A' g, v! W& C, w8 @0 w. q! \: P- G: r
to poll-class
: `, u3 p! m& M: }  {end8 z7 s" P: X2 |% n/ a
* H& K# K2 ?2 Q0 `9 u) e: F
to setup-plot1: Q" Z! O# ~. l2 O; H7 `

4 H& C; v( w# y7 f; E$ vset-current-plot "Trends-of-Local-reputation"
! O" L. ]6 K3 i8 t7 R, `7 k2 X
+ w" F. b* k8 g; ?% }0 c
set-plot-x-range 0 xmax

( @) c& {# H4 M& j/ q- u; {2 o% L6 t& ]
set-plot-y-range 0.0 ymax
4 F' S+ u( A% V7 d* L
end
8 J  H& W+ M, \/ ]+ K
, ]6 X* H. q" ]9 z7 w4 pto setup-plot29 [0 A/ E9 J/ G; G+ ?; ]8 H
8 b) Q. |/ ^* l5 q0 i$ j1 j
set-current-plot "Trends-of-global-reputation"

( E8 T7 z1 W& C: `3 A* C) R2 P9 V
set-plot-x-range 0 xmax
. d8 ^+ |* u0 T' S3 p$ a9 _
& c2 n3 U7 d  j% w, F& a
set-plot-y-range 0.0 ymax
, Y2 l: G$ u9 j0 s" X
end
/ J, T# o, s# O- U# ]" x
- c' I" E* e& j! U3 Kto setup-plot3
0 T) h* N# z/ h) y, M! w7 C, }2 q
+ F7 L+ l( H% K" J, lset-current-plot "Trends-of-credibility"

  J' Z2 M3 c( D8 W8 E2 A' B7 _
% b: S% c5 f6 oset-plot-x-range 0 xmax

8 ~3 O3 R, W9 [, Z8 U' P/ f0 E! C
set-plot-y-range 0.0 ymax

+ A4 r1 {9 L5 t  ]3 Wend
( R4 \( u* V& B) a# T7 Y0 w$ W. a) M( n% `
to do-plots7 W4 k6 M& i  T# U$ K5 U+ F0 ^9 L8 @
set-current-plot "Trends-of-Local-reputation"1 _& a" q% c; p2 V; d4 h1 Y- O
set-current-plot-pen "Honest service"
" Z( c2 K; Y& u- J" V, d# b9 E; Vend
4 W9 `2 N1 q0 K9 d2 }9 u8 [3 w! C) U) q. @# N( s
[ 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.
1 C2 @4 L" A+ m* O; E4 t8 y3 J2 e; m
" |7 M- U4 L& k8 K8 n2 o# e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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