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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:# h* t0 b, F8 i
to do-business 4 a* g7 p  v/ u) D5 p( h
rt random 3600 {% s" c& d6 k: Y, O, k
fd 1
$ W+ o; r$ C* F$ T% O ifelse(other turtles-here != nobody)[
7 b7 b2 x( ?. j/ o( ]( y: W   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.# L# g" a" h. p# _. J, v* t2 L- F
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 O, L$ {& M7 [* j  @+ S/ o   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 l7 @* _" I/ @0 P   set [trade-record-one-len] of self length [trade-record-one] of self
6 a6 a! i' A1 D. L* i" Y   set trade-record-current( list (timer) (random money-upper-limit))( q/ q# y% R. L9 |  b6 Z% a( [8 R
( l2 ?7 Q2 r4 d3 j
问题的提示如下:
* s( `. Z  q1 M
( g: o+ i& f  H4 `6 p8 derror while turtle 50 running OF in procedure DO-BUSINESS
) [3 C; k/ u$ Z: l8 b3 |: @- e  called by procedure GO+ E' m* w- X' t' P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ c4 w$ o; ]3 {5 ]2 m: g2 O' z. }
(halted running of go): R$ t3 b; q, z: Q7 w9 {
. X7 p7 z. I5 F* 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~~
! f  p, {4 D4 {2 P+ f2 h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
9 j  ]4 J6 k: ~globals[
0 _; g" V/ r' i; I* ?3 jxmax
4 j3 N9 P! [1 U3 a- {4 H7 tymax
+ a! r1 O" j5 }) \( Z2 nglobal-reputation-list
- q  k0 p, R: l3 R$ o' W& b1 a/ \7 v
;;
每一个turtle的全局声誉都存在此LIST
! |: T; y9 z( V" i( c+ l3 k( lcredibility-list
5 S$ `/ V/ ~- _, v2 E5 X;;
每一个turtle的评价可信度* G  M/ ]: [8 t; ]- D4 T
honest-service9 A, e" j$ g- I. i# F& ^
unhonest-service$ v$ s, B& c0 K/ U9 r
oscillation
( }1 M" u" |5 y( t: grand-dynamic
: a5 h( u" d9 S: ?3 `: G]5 U, K6 T& _" {1 Y: U. B
: q) A) c+ n7 J4 q1 K% j3 @
turtles-own[( H9 `* }' A5 F5 ]' G! C/ u
trade-record-all
* {- @+ B) t2 H- |5 |;;a list of lists,
trade-record-one组成
6 Z7 ^0 r/ ?9 ?* l( qtrade-record-one
! E+ L  S$ V, Y6 B$ ~;;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 |$ K% y8 N/ R) m2 H; a: n) [, C
& p8 p& a/ {# O# k0 h/ m
;;[
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]]
+ a( }* J* k$ b) P" x: Btrade-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]9 X: ]( J" M' c# d
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. F/ F7 N: r- h& Q. U
neighbor-total
, ~& @8 \2 [/ H! }% E# h;;
记录该turtle的邻居节点的数目) l  Y  Q) x- p# ~0 O, [' G$ ^# \
trade-time
1 W# Y4 x4 Y$ E;;
当前发生交易的turtle的交易时间
) t# n) {8 ~$ Nappraise-give
) c( t# U" p+ Z+ @! ~9 g9 A;;
当前发生交易时给出的评价* G# t% w, F: N& Z1 E9 N  h: s7 b
appraise-receive
$ M3 s' e9 W7 p; ]& [" v;;
当前发生交易时收到的评价
# e# P# n( G% k) K1 t+ Vappraise-time
5 B5 O5 r& j7 ~1 r4 G+ x0 n;;
当前发生交易时的评价时间
7 d# @7 V, H! N: D! E: J3 z1 Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 p2 h3 [! ~1 h, c7 htrade-times-total) f' ?  w3 a3 ~( |( _* n/ `1 }( E8 ]
;;
与当前turtle的交易总次数
7 U) Q0 \9 [0 [) o/ e& k; ftrade-money-total
) ~. ]/ V( {3 K$ q" t1 }: d7 G3 J;;
与当前turtle的交易总金额
$ b' T6 ^9 n) ^: e& ?, k: Clocal-reputation
+ \9 V+ K5 j' n  iglobal-reputation, I: i  ?; h* Y
credibility; e! L7 ^8 h* E' V& j
;;
评价可信度,每次交易后都需要更新
  j8 A0 {5 Q1 zcredibility-all
! |" ]( y: d' D. H, e) O;;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
- G7 r  b3 d5 [/ [
" D4 F& F6 C$ j0 G;;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
% \7 k5 Z, I  u3 L4 _+ Ucredibility-one
' T  d2 u4 \) T" 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; W$ G$ U9 N& r% ?: O1 [4 d. j& {
global-proportion0 w! f5 z3 C* N" c$ p6 i% T
customer/ M" m" p! x' R1 I
customer-no
+ O+ o; Y8 _: s. ~- M; Y7 |0 Btrust-ok7 w# }1 Z; g. M+ S3 J
trade-record-one-len;;trade-record-one的长度
% S1 _9 Q; F& o( ]' a* b* e]
7 N1 s0 J: B, F. c
2 R  S0 D1 ]: Y# m;;setup procedure" N1 m7 K& M) g' l# t( Q
+ ^5 w" c9 B/ n* F! z
to setup
& V9 s4 V' V0 T2 P3 _% u
- }# ~# r, c  F+ h& B% o: @( }" _ca
5 Y. D  R* A( ]

# I6 Q$ U, r- G* C' N( o- ]2 k/ Xinitialize-settings
/ X' Y0 G$ U0 [# S9 U
& X0 e& m6 T# y5 ~+ d# m
crt people [setup-turtles]
  n# q8 h5 G7 V6 }

# ?, y5 r; y" W3 Y8 H# ?reset-timer
% O) L6 r1 b+ |/ G$ H

0 U$ e9 H( P/ S" ^% u4 epoll-class

! O* N# M8 F2 p( P8 d" x8 S2 u: p) @7 N7 v& A2 v5 P
setup-plots

* u% _: R8 W- N3 ]! x
* P! w9 [& [7 ?" ?! Gdo-plots

( K: g+ G9 P' y( oend  [9 f+ e+ s8 i3 U6 I# p. ?
/ U7 g3 }- @6 l0 V/ H
to initialize-settings9 V. s  X7 P2 Q! b. I# c
2 U- u$ X% X+ D! h
set global-reputation-list []

) q5 I# R7 ^  ~' N% L4 W7 L# y+ R9 j8 Z. A- w& N/ W
set credibility-list n-values people [0.5]

) b4 X) I1 {' w" y5 S6 u0 _4 I$ |6 ^6 P* J
set honest-service 0
( B" A( E+ E* d, M* q4 P6 S
  t8 w7 o$ M" l* ?- s; N2 B; t% t
set unhonest-service 0
; ^( b4 r- C& y0 n6 ^) R! d$ u
. w1 k& b' S/ T
set oscillation 0

( h! _- H/ M1 O* J( ~! a$ k
' L9 H  s. a/ M4 S" D3 t' N! ]/ sset rand-dynamic 0
. p' K0 [: X) N+ v+ O* Z7 I# X
end5 }# P3 x( \- n, y/ L8 J
" l  H! d& E0 |+ T) M1 S/ C
to setup-turtles
9 c( }/ m! [, g' Cset shape "person"
& I  a9 |" {& n& Z; F- a( H: Asetxy random-xcor random-ycor8 w& P# k5 e  R" K7 Y* j
set trade-record-one []  b! P5 I9 ~$ k9 K. I# ?! H
5 i, X9 k$ m- L' }3 e& W9 O
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 ?4 ~3 }7 L/ r# b

- T5 {8 Z* K  l% e  t: I& G6 b+ }set trade-record-current []
8 X" J6 Y9 q( e+ I1 `1 Hset credibility-receive []7 A( K8 ~. n  _
set local-reputation 0.5
. @* P, ^$ D6 E# X) xset neighbor-total 05 t7 ?: L; _4 B+ @
set trade-times-total 0
  G3 e3 l- O$ K' s) u; Y; mset trade-money-total 0. E+ Y; e3 g/ q4 G5 D1 C& A  c
set customer nobody5 i8 N7 o/ u8 Z" r( R) F  v  X# l
set credibility-all n-values people [creat-credibility]
9 h6 \9 r- ]% N" n' U2 Yset credibility n-values people [-1]
* w+ O, ^& _6 e. r. Fget-color9 d$ B; p8 q& c* U

) G2 L8 [* `( x( c9 y. uend
1 p% @% [* ^( ]2 L) C# d5 K' P% Q  @7 }2 Q" Q. N
to-report creat-credibility
4 C& g* S( |9 J) b7 O0 Zreport n-values people [0.5]
4 \/ z$ i, k) Z6 t% Xend
# d" _7 A! i- U4 j' y. r: Z' Z0 A2 ~, S* B( K0 q0 F4 g
to setup-plots& ]' N; }. R1 q0 ^) J' f+ s' Y9 C
0 w* x, o9 o- W' `! D6 B7 Q
set xmax 30
% u9 Q& W1 w, v& F, R

, L- H, Z& ~: r- h+ D3 uset ymax 1.0
6 n. F. E) A. s; d5 }
7 x6 p" K; v" V- M
clear-all-plots

+ [" \" o7 R& x0 h/ s1 @- d5 I7 W/ |) u; _+ v
setup-plot1

- L# [4 @* E! `3 }1 W) b* ^8 r% a8 y
setup-plot2
" x" C5 T4 U8 j: U! h0 B$ D# G

; u' N( O3 E3 I: ^" M$ K! g$ f) ksetup-plot3

. i" r9 ^5 ~8 n7 \  i/ E* Iend
' k8 R& }) _" Q' m$ D+ Q- H. }6 F' B  X/ i( d- L) X  n8 h2 C
;;run time procedures
$ t% a+ T$ E/ U; z1 m3 d; W
, L+ K9 v+ y3 H; q! T  m) ]to go" X/ w- [5 Z0 V7 _: z' d

. V+ ^' b  S/ I4 \- ~. c* Mask turtles [do-business]
+ T' i# L$ c' X! _5 ^* R% B: y) b
end
2 f. [5 h6 x9 C+ i- o. l# z( a/ e% d# l0 x5 p( b, H( Q* ?
to do-business
/ l. X* `: W( _1 R3 Z2 q# q2 m
) p: E3 @) \( z% f+ F
$ l! B( i0 b7 c6 H  r
rt random 360
3 y3 T) u+ j9 z& \: Q
. A# u' y# Z6 R$ `( [  M
fd 1

% [5 {2 n3 \0 o9 _3 s: F+ e
, h- ]7 a$ l$ i; Lifelse(other turtles-here != nobody)[

% j+ v9 x, D- T4 ]4 Y( [) [
. s  R) ~8 k- x# O0 ^- ?' [set customer one-of other turtles-here

8 ^) @' [! H1 v5 @! w: l3 C- l/ V
6 u# P% H* F( N( N0 D# \2 \- B9 m;; set [customer] of customer myself
% m1 `3 A! `* P. ]

4 h$ ~4 W4 d/ y- J2 xset [trade-record-one] of self item (([who] of customer) - 1)
% ?0 `( f* `% Z% w. c[trade-record-all]of self
. [9 i) ^! u1 [* F5 e# F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 G1 q: M, N9 d; a- o7 S$ z$ v& r& Y) r- _) a9 t' x# I6 a; X
set [trade-record-one] of customer item (([who] of self) - 1); f2 Q; ~$ x( ~
[trade-record-all]of customer

, t; Q% u8 c/ J) U) Q9 E, ?
- A, k: x1 y& Eset [trade-record-one-len] of self length [trade-record-one] of self

" A% a% R4 F0 {9 a- i/ Q6 b3 h' f6 S- D+ {6 G
set trade-record-current( list (timer) (random money-upper-limit))
0 Z+ \" ]% R5 C. h1 F1 b
( F1 U% |- S/ C. n+ h2 |
ask self [do-trust]* x3 T) P0 Z' N, R+ W! K8 D) L
;;
先求ij的信任度
0 _# c& B: g. m4 ^  k
* q  {: d1 P: l; f1 Sif ([trust-ok] of self)4 w2 B  C) l1 v8 ]/ R
;;
根据ij的信任度来决定是否与j进行交易[
1 A& `/ S) p& n. o6 b# }& Lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: t! v- w0 S- A# G+ \; a3 P# p- t
& }* n* ]. k: o+ u% u  h' y[
) }2 C. D4 f" t& p* n, Y

: s7 n$ S; ]. {$ Y& g9 ]do-trade
) b( |2 H" ~+ g" Y

# d5 \4 i. W; q+ ]7 T7 [update-credibility-ijl

$ O, k4 A* C3 |9 _8 I9 N' U0 C9 ]1 ~( w7 i
update-credibility-list
0 ]% [/ z5 w) D
! Y( a) a7 U( x  e, l& n
7 B* ]: g3 }! Y6 w, [. \2 S' u
update-global-reputation-list

4 s2 [' d% s& T2 l0 @! }/ t. _' P
  g% ?+ h4 N) _poll-class
. [9 y. {) q7 A9 Z9 \! t  N/ |
7 |2 f4 F3 `5 G! k% ~4 u( V2 Z
get-color
; S/ k/ l) p3 H0 N

$ O: J* H: y3 [9 c* E/ ~1 p, n]]8 ~/ N' r8 m  D) l

. n) P( c& b. |;;
如果所得的信任度满足条件,则进行交易* I3 b0 L; i8 p
( g( ^; G& z7 G) ]3 z; L
[
- q0 Z' a4 Y; i6 L9 Q5 _# O1 [
- M3 O* b; M2 j$ Y! R0 p
rt random 360

3 [9 V1 m+ [' S) k8 B4 l
8 r( E" c: X, x$ yfd 1

: {. y; P/ O) v, j8 @2 b: X7 y# M% i# i' Z7 N, X
]

( w5 L# n" h  j# S$ X6 D& n/ J
. e: |/ G) ~: ?4 M. D& {; [& D  Oend

! f. R8 d8 \: `8 J, q
+ G" R3 ?% U7 b+ L: gto do-trust
- l/ q) F7 O: O& l& U/ D3 cset trust-ok False
# I- h* L9 F& D; G/ ]
' @1 X: o/ H' s& y

2 l1 s7 H' W* [$ _let max-trade-times 00 C( s3 E; J5 ?# ]4 y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" A% v' p5 s1 K( ^! p
let max-trade-money 0
/ j# d; o" P/ i! r) R5 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. Z- A9 y: d, V/ C* k* p
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 M% g" _6 v* E9 o" I/ x% k8 |7 F7 w& x' u* B3 ]
8 }6 K6 B2 A3 v7 J
get-global-proportion
5 i# N% |2 s9 c1 ^let trust-value
6 E, L3 X2 a- U  A/ u: elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
. K2 i. I. R8 r  ]
if(trust-value > trade-trust-value)
+ p* H8 j9 B+ Q. z( i: S[set trust-ok true]" E' e" ^5 u) s0 {! `
end
. B0 }4 ?6 r; t! T' V
" @% k# |# q) lto get-global-proportion  k$ f# ]8 D+ d* v7 n* O) N# J! c
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 j+ M, L7 B3 L5 I) k; Y( A
[set global-proportion 0]9 ]7 p* G0 P" L7 u" A
[let i 0
" d& I$ g" q0 A+ alet sum-money 02 p2 h8 N! J) s  g! Y. R. H; z+ B
while[ i < people]
2 F3 m- U# Z1 X. \1 _[9 _+ K5 x* T' I( l( h( ^9 C1 `
if( length (item i
' j( O+ C" [, h9 W& q[trade-record-all] of customer) > 3 )
9 {/ D0 ~8 o; [1 v' f# J: n, ~8 Y& H
[& f& O/ F, p& H5 h* u+ d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  _! E# Q6 R/ j2 R6 F
]& V$ v& S7 f6 P! {5 \6 J9 ?+ ]
]2 K4 F# w# K: T- F% A1 R% g+ W
let j 0
' [  F1 ]: t* ]4 f8 tlet note 0' w2 y" x  n  E, S; @! g% t, y; J" S
while[ j < people]
9 t9 a! U) k; h  w) p7 D[
6 u- b1 h+ s6 ?! Lif( length (item i
0 I0 ^& C' \, C/ G[trade-record-all] of customer) > 3 )

) x( i$ Z- D/ @; c6 n[1 I- |& d9 Z* l, W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): e! P, a; `" K) [. c1 O5 k+ ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 S( |" v+ R; G% B3 I1 B
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) [  T/ `7 v& k6 Y; y
]. U1 r) @7 R: q+ N# X0 ?
]
* A- m- I! U* rset global-proportion note/ \; J" I  W! \! `2 N8 ~2 B
]2 [7 Y. i1 s3 H# `, E$ V0 z2 ~
end6 a; y/ t2 g" r, j
# u* w6 |# [( i- l
to do-trade9 q/ h) x! ?# B3 E
;;
这个过程实际上是给双方作出评价的过程, A( g2 M3 r" F& P  g# i4 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" m4 j7 \% R6 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" y' C4 a4 z- o3 A6 j7 Hset trade-record-current lput(timer) trade-record-current
/ q  ]* G. g) m( m" {;;
评价时间5 G; n4 J9 S* j" e& t/ b, A
ask myself [9 D# e6 G9 C8 w9 d3 z! H
update-local-reputation
4 {  X. _' z1 m0 D* g! h) w1 d. v: Wset trade-record-current lput([local-reputation] of myself) trade-record-current
& X' d8 b3 ^( n& w6 v  o5 }]. K$ v4 u- p: L6 u+ I9 s' z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) D2 c- m' r1 b2 P, m;;
将此次交易的记录加入到trade-record-one
, p6 ~& y/ V6 ]9 r' I' v  S. Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ B3 p8 j7 P2 u& Flet note (item 2 trade-record-current )
1 U+ b0 x3 z7 X6 p1 tset trade-record-current0 x- b) Y8 p2 g! ^
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 w" E& a% B3 r, U6 X
set trade-record-current" a) |5 Z2 _7 c0 t: c4 N! i
(replace-item 3 trade-record-current note)9 K- d. d+ f' U. D! _

- \3 E% H6 L% Y1 s

% r5 P% W5 V' ]ask customer [3 {: R0 h0 h# R% ^6 M
update-local-reputation
) U9 D8 J1 Y9 Wset trade-record-current' k; L- z# D, p$ O0 \+ H
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: v4 M, i- C; o. S1 |]) t! T4 U" r" O. V2 v

6 Z, B9 T9 ]" ~# e; F

; M8 O" i8 p7 P  x1 yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 i4 l. S( [( T: E, s1 M
3 B+ {$ n: Q, h8 k, p, v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! p0 }3 w, Y3 v( d8 r# h6 M8 [/ k;;
将此次交易的记录加入到customertrade-record-all$ l# c9 h( `* E- S5 D9 ]
end
4 h' l' s" k6 c
3 |0 P: o3 J6 \& w3 W  r) `; oto update-local-reputation
! Z! ^/ Q% {( J# }1 i6 Z8 I1 Kset [trade-record-one-len] of myself length [trade-record-one] of myself$ h+ l1 S% d4 Q
5 ^2 r6 ?& V4 _8 D! e0 Q& I
( E! {( w* A) s- ~
;;if [trade-record-one-len] of myself > 3

) D: }5 H2 }. q' b! }9 bupdate-neighbor-total
& e! V! U. V/ m1 l" [;;
更新邻居节点的数目,在此进行
; U. @: z% N2 w) m! @) ^let i 3& S& c; J9 l+ t( v9 U
let sum-time 0* B: g5 C  B0 h
while[i < [trade-record-one-len] of myself]9 T* c6 T- v: J
[
  s1 p! a9 F9 H! ^; rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 T" r1 O2 \: f- ^: N% H& h& d, f# Eset i) {. x, X9 E3 F8 A+ ^
( i + 1)

' v! t- O, h) v- `/ J5 d]; J3 p3 L* N+ D; t) ?
let j 3
5 }: Q, T; \  R) `  @2 klet sum-money 0# }) q  g; s% a  A6 Q* o
while[j < [trade-record-one-len] of myself]
' X7 H& J& e+ i' U/ f: m[
) N3 f% o6 f! A; {1 _) z1 t2 P% Z" P7 |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)
  G, T+ v2 ~2 L& hset j+ E; O3 L7 j, K* s( ^$ {
( j + 1)
, Y, M: f+ m, x, C" l& J
]
* P) L1 _' v/ Y: ?let k 3! p9 R, a. ], |% }8 c3 i
let power 0
+ V  r# m$ \; {let local 0
: c' t# q8 H& X  l, {! @while [k <[trade-record-one-len] of myself]
3 Y0 O% H. t  `$ z3 o[! O; p  @+ ^% {6 Z3 C1 V2 N; ~
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)
( U* h/ K2 ^' k6 Oset k (k + 1), `0 p/ y( f0 G6 W
]4 J" \/ ^& D; a( _$ B) A; M; T
set [local-reputation] of myself (local)& {: l# X  z; I6 F
end
# M7 g" @% j; F+ O; Q, `4 C; z: Z0 C3 B# L, A+ h
to update-neighbor-total" D8 F* M/ ?9 Q: y5 l4 ?2 t

8 L* _6 s0 `2 Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; A+ K# |+ y# f% I) ^1 Q1 l* W

$ M  R) o9 Q  C4 q
0 s! s  H9 k: j- I6 E4 K) u
end7 J! @2 [2 `% R

3 q, r  a) V7 y7 [6 D( i5 g; yto update-credibility-ijl
, @+ {$ U- l* K; z+ I) M, ?, G, o* R* C; G  [# S8 E( f: G& ~
;;
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 _2 Q* N2 \7 _3 Xlet l 0' s% @4 r: A* O" J' a: N6 p" w  j
while[ l < people ]6 J9 z/ {9 E; U5 y
;;
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8 F& Q+ r6 {% [0 a, T' E- T
[
5 G; y0 T$ [5 O. C" J" Blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)& s. M) `7 m" m; l5 b: R
if (trade-record-one-j-l-len > 3)( l* N3 t- V: f) }* F- r, X
[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-one3 c0 [- L" C9 s
let i 3
3 n- P7 M: o! v1 d% K. `6 {let sum-time 0
% A2 K! G/ h: ]2 |  h( pwhile[i < trade-record-one-len]3 W# j' B8 m8 J; Q0 z
[, v" ^& R7 j* k  H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 y/ g% ]9 R8 u9 z+ G2 C( Zset i
. `2 ^* b# C* M% q( i + 1)
  ~& W! H$ k, f4 l
]; l4 ^  D! \9 C% p! a: f
let credibility-i-j-l 0
0 V: X, F6 N8 `;;i
评价(jjl的评价)5 m2 a, q7 |& R) ~" g) D
let j 3
& h) C& U* ?! o% |let k 4
+ i" O# t: S. j/ G1 _( Qwhile[j < trade-record-one-len]
8 T" P2 h1 k( I) J: j+ B1 z8 t[
& V: S, N) d. U& u' W) h$ {; Cwhile [((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
. O( v" m$ {3 l$ T0 Uset 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)
3 N  b/ S/ \% n$ a8 E+ {) s% eset j% I7 x! G: I) ?) R/ I
( j + 1)
% X7 b7 n" S, \) X# D* v! ]
]- U" ^( I: Z3 P: {3 j
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 ))
9 \, o. u* {9 ~6 c9 u# i( f1 ^  |0 l/ z! ~
, ?9 U% o/ r' t/ i& }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 a8 U2 l6 x# m: [# z2 {
;;
及时更新il的评价质量的评价
+ `- D$ j1 @; j* s6 ?3 ?set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 J/ ~6 G& x; W1 E
set l (l + 1)
! E$ ~7 v0 M- ~/ c]
' h; S! |: @8 N, O7 f+ T  Yend* B9 _/ v8 [5 I% X$ \3 P
, \0 N9 d, {5 n) ?
to update-credibility-list
8 V1 P( m. l7 Y( d% {& i. Z8 ]9 Klet i 0
9 y, L  I9 i5 ]0 pwhile[i < people]+ |4 h+ l9 R9 G4 m8 r9 t2 T
[# w. D/ c5 L8 Z) t  `3 S' d3 e) N( O
let j 0# I3 d) y3 p0 F
let note 0
, L) X# X2 j0 d# f* Elet k 0
4 v9 _8 K6 a$ [* _, L" c5 K9 }" X6 q;;
计作出过评价的邻居节点的数目
! [( [8 s% a8 dwhile[j < people]
& o0 S, \/ A% M. N" e4 D[
) \) Z+ ?/ `6 W4 ~" P7 iif (item j( [credibility] of turtle (i + 1)) != -1)
- M: l% U8 R6 a;;
判断是否给本turtle的评价质量做出过评价的节点
# ]$ k/ q2 t1 Y7 l  e6 w5 k  d[set note (note + item j ([credibility]of turtle (i + 1)))& R; Z/ t$ Z$ v4 b" U3 i* M# C- M
;;*(exp (-(people - 2)))/(people - 2))]
. A) O3 H# W3 k% B# o
set k (k + 1)7 w2 u( ?7 a; ?5 R- t
]
  K8 B/ B( n7 g7 k9 l: ^  N1 Wset j (j + 1)" p2 X( l" d3 }( f# x2 o* M
], Y: W/ i7 o  s! X4 T: e2 T4 Y$ G
set note (note *(exp (- (1 / k)))/ k)9 c( t" ^5 b) Y! U4 ?5 a9 p
set credibility-list (replace-item i credibility-list note)
- P. m0 w' D8 m+ E, Zset i (i + 1)
  m4 W# W7 K, b& o- k3 B]
3 D9 O* q5 ?/ `: J! Yend+ K6 l) z- e) Q7 x
& ?2 [, J/ p/ a9 M# p0 t
to update-global-reputation-list
2 H2 {" |. l! L8 H$ f" klet j 0
1 c/ V) ~+ U; V- Rwhile[j < people]
6 n8 F8 r/ p( M; w* i' r* _[) q7 o2 n$ v+ }" r$ t9 I
let new 0; P/ l4 U0 }, X4 A+ s( G1 o0 P& \
;;
暂存新的一个全局声誉
& X4 p1 y$ y7 s& z' Vlet i 0* _( G* w* L7 t) s$ T# G
let sum-money 07 t, Y. N& D" u, u, x
let credibility-money 0
4 L3 L  A- e5 ]$ kwhile [i < people]
' w' W) z+ ]% S, w* @[
' i$ V0 ~2 q8 G0 Gset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), v7 W, A! r" M5 J
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" _0 j5 x: P, ~$ ^6 X5 s
set i (i + 1)
- q! Z% h8 A( ?3 n! H9 j]; O+ z2 R" ~; P! t" X- r. z5 W
let k 0
: V9 r/ ]7 j' ^( ]  R; jlet new1 0
1 N+ i) h; e4 w( p* O# owhile [k < people]$ ~5 T" D3 q- y, R3 B
[
$ u8 L2 x3 [( b+ v# Zset 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)
5 E( m- N! l2 q  E. {set k (k + 1)- x0 j, w3 L9 l! @! c3 R) M
]
( D6 Z+ y3 r2 e) z& Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 @* e  J2 {# x3 P6 g( Jset global-reputation-list (replace-item j global-reputation-list new)
9 e# |  c% x, I# _# u4 ^; Wset j (j + 1)
  f( J; ?7 B5 M! ]: i]$ r5 |% n/ E( {3 \/ m0 g0 a: I& r
end' r- S" ^6 l, k2 ]
$ w/ G0 f" W. v6 E" J* c6 X
! \! {( i3 c3 S( ~7 K1 T

! f6 `6 O! E4 ^, l. R" w6 rto get-color
) b6 J: r, s' c7 ]+ E" w
+ M( y: [* J3 F4 c) {set color blue
) w8 W3 ~& t5 W+ N6 x4 P3 o
end6 ?' ]2 w4 p' |9 Z, u- O, _, N% g
1 x; h" ~6 R8 c" n; \4 D
to poll-class: P3 F/ Z* Z% X7 ]
end4 V, O" ~6 A: C

) d( {- Y/ m+ a& \/ [to setup-plot1
1 N3 C6 o- l1 l. @3 r+ L3 ~( l7 D, S4 x, f) R6 W9 j
set-current-plot "Trends-of-Local-reputation"
$ t: v3 Q- w# E; A: _$ b  Y
) S; @, p: l8 w0 i
set-plot-x-range 0 xmax
% Z1 G& a, {, ^; u# b, u) q

# H+ V- Y1 B1 ?6 U5 {) o" m' Sset-plot-y-range 0.0 ymax
% C: D- D' U. C) e
end
( i, s$ ^' N8 V
3 _0 D% [. z" y% c. a5 `to setup-plot2  O0 I# z" x. Z& Z
( f/ s4 x4 T/ s% a. g- M
set-current-plot "Trends-of-global-reputation"
0 \& `. [( B9 M* P" D

! ]9 v5 T  Y# V+ R& G3 |- S2 Xset-plot-x-range 0 xmax
+ \- S+ q0 n- T! z

6 G: n+ Z; y8 F, {& Pset-plot-y-range 0.0 ymax
9 v1 }5 l& a; l: _
end
: b2 j/ W& S3 K: d' r. V" w
0 E0 R# L) \) k' t+ X9 {4 u4 oto setup-plot3+ t" \7 o! ?6 |8 K

- i) c1 n, _& ~$ wset-current-plot "Trends-of-credibility"

3 G: }: P2 ^! e# _4 G! {7 i2 |# p+ k) @* P' M# H  Q0 k9 ~* a
set-plot-x-range 0 xmax

5 H3 `9 @$ W9 [* c; O0 `8 X+ Y. S8 E: z+ o& X% E
set-plot-y-range 0.0 ymax
" e! v; C; o: \  b
end5 I/ y5 X3 v/ A, t! g

  w# s7 z$ g: z1 D% Hto do-plots* S% J0 }5 I' S1 L. |
set-current-plot "Trends-of-Local-reputation"
6 |6 _1 r1 v9 y# {, {- |set-current-plot-pen "Honest service"
! z0 q/ i7 `+ i4 s7 Tend
" j! z  |- X4 B' P4 B% s7 d  q
: ~- E# k( b% e) [1 v3 ~[ 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 \! P- R/ U+ ]1 U0 T0 s/ G& n3 ]+ t9 s: i" 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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