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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:
) O3 z" Q, Z9 z, A8 J9 q3 mto do-business / T% a  F2 R5 r6 k  b
rt random 360
& `! ]+ u9 O/ V6 O' R0 k. n fd 18 C1 S/ A$ q1 M* q0 r! O
ifelse(other turtles-here != nobody)[
# M1 A9 r  O: p* J/ ~1 e  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.. G! P- G" G8 v' c, A+ ]' ?. Q5 K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! `0 N& H* o, `3 l0 V5 T   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' Q, I' Y0 X3 Q/ }
   set [trade-record-one-len] of self length [trade-record-one] of self
& u) V+ {; W( K$ f1 m/ e- o& f   set trade-record-current( list (timer) (random money-upper-limit))
; W# S" ^  u+ d8 k" o, P) z  [- b! x. s0 c0 z9 k( V: T' q
问题的提示如下:
! B, d2 f: f  y  M2 J0 z0 ~9 y) a( O+ h7 c3 h6 q5 \
error while turtle 50 running OF in procedure DO-BUSINESS; n9 U* A7 m/ r! y, M* Z( v1 q
  called by procedure GO
/ J" H9 b0 i0 R" B" s) A5 |! \OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 }1 p, m2 v. W4 |, ?( H
(halted running of go)
7 s9 p3 Z  W3 S0 y/ X. g! c& k7 R* Y# ]
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~~
7 h3 q' s, ?8 `6 ~3 |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7 h  z& M! z5 |7 v$ }' t! S
globals[
0 F* G; [+ F! cxmax" G! J- ]9 [) }1 v& G
ymax1 t  ~6 ^+ d/ a  S
global-reputation-list! B1 ?! }2 O6 b* `0 i

* k/ H) X/ Z; Y% t* I;;
每一个turtle的全局声誉都存在此LIST
% l% g# `" r$ @7 x3 ]# T2 Icredibility-list5 P. b) [$ y- D2 Z6 U* m$ ?
;;
每一个turtle的评价可信度2 F" l5 t8 K/ m5 X
honest-service  \9 j! h7 w- P3 U7 O! _
unhonest-service% A6 ]1 S. s* C- \  t2 y8 j+ `7 }
oscillation
7 X+ L+ d; N1 o- ?2 U# E: G# ^rand-dynamic/ s$ w3 k/ }6 w; L9 f* r
]" p9 T/ N: \9 k( t$ l

6 B) |  O7 S0 u$ P/ _4 ]turtles-own[
# u" u' m2 F; u9 C$ o. h; E; c+ o- xtrade-record-all& I  \" J, G; o3 Y- P7 W  g0 l
;;a list of lists,
trade-record-one组成
3 n7 L9 b5 Z8 ytrade-record-one
0 ]% F1 z, W- q7 g; e0 d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* u5 R) }( H- n, ~
0 H8 J. o# P: k# s- C( P;;[
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]]4 H+ ~- A- [; P2 [% w7 U+ t, H
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]
: {1 c( z- n( B. scredibility-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
- j: H* ~5 Z, w; \8 R) C6 p8 ~( X* Dneighbor-total
* w5 t5 L; {9 k: P# |" K; q4 ];;
记录该turtle的邻居节点的数目2 A7 M, g9 L# m& @
trade-time
4 R& R% o( K8 i7 z4 x;;
当前发生交易的turtle的交易时间" i2 ~, t. N9 q  a. f! D. S# K, d6 j
appraise-give/ i) X: _0 U* h
;;
当前发生交易时给出的评价3 P( A8 j# x+ p" N
appraise-receive
+ n3 u- [3 [1 R3 Z# p) ];;
当前发生交易时收到的评价
# Z  _5 M1 r- l: j5 M: E: C* lappraise-time. Q8 }4 v2 c0 b+ K8 ?
;;
当前发生交易时的评价时间. b8 S2 n! v( }6 T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉: n1 l7 r* j8 ^/ Y8 u" D& k
trade-times-total
$ a9 M. ~# w' _0 q/ F* z;;
与当前turtle的交易总次数8 t! C. N! D! t9 I
trade-money-total2 r9 @" h" }' `) C" S0 [: @+ K
;;
与当前turtle的交易总金额2 S+ q; Y9 a" D
local-reputation
7 J1 ?8 d& N1 iglobal-reputation: M$ x$ V7 ]7 q
credibility
: H8 g; U1 Y  I- ^, A;;
评价可信度,每次交易后都需要更新
" ]$ |2 \1 `7 l. I0 ^' Zcredibility-all  @7 O* i$ P* K: L: h2 U! 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
; B! e0 y8 r; f  U8 F& R: A! q( `. c1 e! w
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
$ T$ b& M" V# ucredibility-one) V$ Z: m5 z. K2 u8 j1 c% F( Q
;;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
, D5 m- B" z5 U! V' t( B7 _global-proportion
' `; o- K& z( M$ ~# h/ rcustomer
% ]! H; r1 K% k. Ccustomer-no
" i8 O# e" s" {( N; z" Atrust-ok* c6 R9 S( F( Q( D, y4 v! x" {- }
trade-record-one-len;;trade-record-one的长度
$ c7 U' S7 G, c0 @]
* d% T  r0 a! Q& \3 R* }$ R. n  r1 l
;;setup procedure' u% w" }1 U8 b4 F0 M2 a

" m4 ^7 |& P) `- x( Wto setup
( E; }& o- |7 g# r: K
3 h9 u: g7 Y3 W+ `ca

, ]9 n: K7 a* {4 G: U; u
( s' L1 c% b( [1 r5 Xinitialize-settings

! j2 A" _. f5 z, P
. _% t: a9 N& H' P, ocrt people [setup-turtles]
' o! j0 q$ G- e0 \2 q7 U

( D7 O# y7 X. Z' A' s1 vreset-timer
( U/ G0 M; o+ v0 X) T/ c6 Q( a

6 F: h3 X6 r3 R5 @poll-class
9 `; \; E9 b; D) q! t& D5 R; |% e( A
7 c  @+ N1 h# a& q: e( f, @
setup-plots
9 S3 C7 e' @2 G. Q9 ^# J
+ v; M" ^7 L  ^$ @% y  q" W& _
do-plots

3 j8 c" i" w  T8 Q( I* Xend
0 k- u; C, C8 J1 s! ?( m( [  [
- {+ B& u4 }# y2 f3 u' J6 W) [to initialize-settings' K% k7 O3 R& `: E
% ?" K2 K! B/ y/ ^, P; n
set global-reputation-list []

4 k* L; m% ], X7 h
/ P  @# U1 d% Q5 @set credibility-list n-values people [0.5]

% ~- Q' S0 v( N( ?' M: O; d8 [0 R2 F4 x% q: S/ E5 }' V4 n
set honest-service 0
$ ?0 |1 |( k. d$ W8 d
6 z1 i. {" H% S/ H( z- D
set unhonest-service 0

5 ^  }6 K* t8 S# ?/ e1 r) b( \: \. @# ?6 Z+ S$ j# e
set oscillation 0

8 M0 D( I; E# I8 G0 X' n
. V( z! T5 g. [* o7 x! P, ]+ A6 D) Z! Uset rand-dynamic 0
4 o9 ?$ {( ^: w/ @7 L5 Z6 B
end& `2 _* O9 G8 S4 l* D
  D0 |, X! G+ H; T4 P. P8 o! f8 [
to setup-turtles 1 z" o7 k, L. L( u' v0 \
set shape "person"
7 \; o- y- }. w) b/ y- ^setxy random-xcor random-ycor; p! G  o! q1 l8 v
set trade-record-one []
* ^4 ^, c7 f8 k1 O) N

, I5 Z( y2 I( ~% Lset trade-record-all n-values people [(list (? + 1) 0 0)] 0 R6 M% D; X( b' x
' O. z" d+ l% S. j. \, u7 X# u1 d' L/ h
set trade-record-current []* _$ J+ _/ x/ k
set credibility-receive []
" ^' p7 h2 _$ T+ }7 S1 V4 F5 |+ aset local-reputation 0.5
: C! p# W* y& [; V9 @: U  Tset neighbor-total 0  u$ X* }! ~2 ]  C- Y; z
set trade-times-total 0
9 T7 c; d- U0 ]" h* ]0 P8 H5 z* bset trade-money-total 0
, _# G6 p( c3 y& s) \  A- x' jset customer nobody
) s! R+ J6 r1 u! ^( ?set credibility-all n-values people [creat-credibility]
' Y  N* Z. w! B* p* eset credibility n-values people [-1]; o# a. K5 T# G; D, ?/ X
get-color
, S  T7 `$ X, J! ~
3 i' o+ C* ]; \' p2 G
end' C( w' ^% T. J' N1 Y
, e; \' \& ?: x
to-report creat-credibility
" U. Z+ o, a9 E, ^5 Oreport n-values people [0.5]
; v* T7 d& A' G# t/ l" Q; Y. }5 {end. R4 c) A! f+ M3 g
8 n1 `6 f* T0 O6 D) D; |
to setup-plots) n1 \* z: k- q& E# b
! Z; E" ~/ A- c  n8 u. t- @. ]8 o6 g
set xmax 30
4 e; O4 V7 C  I& K5 ]
6 {/ z; t# b0 l* @. X4 [0 v
set ymax 1.0

/ Z9 G( a4 P7 k
( E' w' D* {3 M. E* Y* [* _) Gclear-all-plots

2 y$ d4 ]7 `! `/ C0 d8 D9 J3 r" K7 V" Z- x; b2 \
setup-plot1
& {. V. {7 T' q
) q2 T/ c9 v" T3 M. i  I
setup-plot2
. t; V) E5 ?" U2 n; J; ?
" n. r  n" t3 H8 b  i, g
setup-plot3
5 m$ H& T6 N$ o% E3 i2 D
end
, |2 |0 R: U* T) @/ L; k' ], ^# a  g( O) i; n! c" ~
;;run time procedures
6 j& R6 L3 y* ?1 i9 H. J( N+ {+ h, o6 j
to go
( @4 u& d2 A4 m1 k4 q+ Q: L: A
9 v: V4 J" s9 K. mask turtles [do-business]

: S, a; ~- E( V% E3 uend0 y& ?+ _2 r+ F
) h2 X: Z4 B* F* w
to do-business
& y& \* a0 G" s7 S/ [
' D% z. ~$ R! Q! [1 c

% D- I. x0 L6 ?. \* m& ?/ Yrt random 360

0 O" |, ~5 {" |9 D0 b9 |: \! a9 U4 F4 R. c' o3 n2 Q3 ^7 ~
fd 1

. i- U4 e/ V! l# \
7 X; |0 Z4 ?4 \. Y  {ifelse(other turtles-here != nobody)[
4 m! j  H- C: E* i
- K& m% g( }/ R2 L! ~9 }
set customer one-of other turtles-here
& |0 K% l- l: P$ Y" j

6 v0 A) |% ]4 G8 l" n;; set [customer] of customer myself
3 J1 c: k& x& q: u

" ]1 v, P* t' h# w  O" g/ ?$ ^  Lset [trade-record-one] of self item (([who] of customer) - 1). [: P6 ]8 ^& N' q
[trade-record-all]of self
- S  x# s( s4 h. i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& Y' q/ z" q5 k" J+ [! \; F' H. J

; |; `5 V3 N, i  ]set [trade-record-one] of customer item (([who] of self) - 1)( e6 x) @+ X7 V* c* e" n
[trade-record-all]of customer
$ p9 G) W$ d9 Z5 B; X

9 V% x$ D& F8 z2 }& Vset [trade-record-one-len] of self length [trade-record-one] of self
) K5 q* H" I2 `
' l0 S( k# B- I: M* L# \: c7 X5 q
set trade-record-current( list (timer) (random money-upper-limit))

& y1 _  O: T3 N- P! o/ P( J+ C$ @$ e8 `& W3 P  m& h
ask self [do-trust]/ f, Q* [; g) o  E9 Q
;;
先求ij的信任度; u: r8 X3 H- K! ?" z
  \8 z5 f$ [. c! l) s( r8 @( l
if ([trust-ok] of self)+ o. K3 b9 g3 s- x8 I4 H% f
;;
根据ij的信任度来决定是否与j进行交易[
) x! `: y+ ?% W7 F  w5 y7 y5 Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 L& j9 `- }3 I5 Q
6 m; _4 O0 e: i3 I* I4 r& y/ K[
1 x& z, a1 H) T2 a+ A( h

5 d. P) V$ _1 @7 O" @; Q' _do-trade

6 _1 v4 Q8 ?5 X0 R3 f5 z8 m0 f2 \4 F) D- C9 _8 K3 b  m2 v) Q
update-credibility-ijl
" e! j  {6 a9 [6 ~
' P. |4 D7 [7 ]1 H
update-credibility-list
' E0 f. I* w6 J3 X9 T! F; E
# G) M( E9 c0 e/ f% I/ D

' Q5 }1 _: e4 g; Eupdate-global-reputation-list

# e! J4 {) r2 N) @: b" O% E
& X/ r% `& J, R* v! l8 [poll-class

- o6 [; D' ]& e& v
/ ?$ n+ B. v) g5 v/ Sget-color

0 `) y; P. u2 L: ?) F! F, D) D) v' T, k+ R" L
]]
7 H7 @- T" ~5 i- l5 C. u' V/ Z# s1 e8 n/ E
;;
如果所得的信任度满足条件,则进行交易' r/ E/ q$ X# C
2 J* j9 U% H& U5 `, y
[

1 Y+ i. {+ c$ e6 ~4 S" L
: X6 N. ?  `; {6 T/ b; l' h0 }rt random 360
8 `; r2 Y- B; @; d' e& T) R

9 D3 a# @9 ^5 d# D+ i1 afd 1
5 z0 v  ?/ C, y4 @
; n2 \  |) d( L: ?/ Q9 U6 w; T$ |% R
]

* j/ N6 U; ]' e3 {6 h' y! R# N/ v4 Q$ {* v
end
8 s9 {/ S5 j- J
3 e6 B- `1 y+ [; _
to do-trust
; w. Q: h' H& Q3 sset trust-ok False) c: x- J& D  t! R' O, U
# D. w  M3 G0 [* x$ o
2 t9 x7 [, I/ }7 Z- D# s
let max-trade-times 0' C% T" o! p3 u9 f  V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ z* u  P$ Z7 h. P! ~5 B& {+ Q3 ]+ Wlet max-trade-money 00 y! l9 S( ?) g3 D# E% }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 g+ u# @$ o3 q2 M2 E3 k  U/ _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* y# B4 A0 L/ ~7 o9 n# s, j' _
8 }" p9 K4 r9 _0 N; I4 U

1 \2 V2 d. E9 w  v: h& uget-global-proportion. f1 ~& f) \" r% y- i5 D8 n
let trust-value
8 H& o7 u2 L+ }7 j6 o* Z& 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)

  p. @+ L8 Q7 `5 ]* {, _5 X1 K4 uif(trust-value > trade-trust-value)
( ?+ L5 X9 \4 z" X' K& k% i[set trust-ok true]
2 f& O3 u% n3 x. H; ?$ v, |9 a5 kend# g% B& j- V, P+ K. M
) ]8 [% Y- {: H3 s, L2 c, [; f6 @
to get-global-proportion- _9 c) ]# f4 K1 t6 S+ k7 Y  r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 k7 s; _: `9 V
[set global-proportion 0]
/ S* M& L) @; ], p" s2 U! N[let i 0
7 \  M7 A. v( a1 d0 H: R3 ilet sum-money 0
5 n+ l' a" E7 X/ i% ~4 Uwhile[ i < people]0 X7 A9 Z; R4 a
[
- @4 ^) \- s. C' p3 K, |' xif( length (item i
  u. d: U4 J' Q[trade-record-all] of customer) > 3 )
, k! Q+ U5 ]5 o
[0 q( ^7 _# Q4 J, S+ N8 d  v0 X; d& r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( x3 Q( e7 p! n: v]
: F' y3 }9 }  O# e]
6 K6 j* U$ w# o; f0 Blet j 06 O( Y' y! ?" O5 }' e
let note 0
6 J$ E/ A# H/ O% d: V& cwhile[ j < people]; e) P4 N( }- u4 d# \0 C. K! W& H
[" |% b; V; \8 e8 n" v
if( length (item i/ ]9 M3 m, K  a6 Q0 u
[trade-record-all] of customer) > 3 )
+ y' U& c1 b. N9 r
[
( b$ X  I" I2 g1 L, D( ~0 p/ i# Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 k) u. d' X6 L6 A( H2 |
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  ^! N. R# @* H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; u% B+ [8 f; p( |4 i]
( @9 P( t' a- k4 b]2 w' `" I/ z3 _0 [% g0 R0 @( l6 i
set global-proportion note
0 n* d0 _0 |2 \$ ~$ T]
0 X. z  V9 ~6 _+ A9 \, ^  Lend
+ u9 `% |8 N& V1 o8 }7 ?5 ^4 O
+ Y. z/ b: T9 w: F0 j' ?to do-trade
6 _! `( |# l1 e;;
这个过程实际上是给双方作出评价的过程
9 N8 Z/ R9 Y0 uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* I6 n' W( g. {" r) m  _. ^$ u: k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 [7 t6 }7 l# e3 K; R2 U
set trade-record-current lput(timer) trade-record-current% V2 Y/ `1 m. i
;;
评价时间
+ x2 [& z7 @& c! |7 @ask myself [, Q: z  g9 S7 p, s
update-local-reputation$ T) r# Q) v- j) W
set trade-record-current lput([local-reputation] of myself) trade-record-current6 P0 ^7 b8 }4 y2 \3 t1 r
]  A! b% {5 Q+ V
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# T) w# E  S+ N, q2 C+ x! h;;
将此次交易的记录加入到trade-record-one* |4 n( w/ X5 W/ \. y% l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  |! z5 f$ O1 A( Qlet note (item 2 trade-record-current )
, u* m+ }' s8 C+ F( Vset trade-record-current. t# ~# z4 ]% u
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ R  P9 F% M' ~$ [
set trade-record-current1 h& y& G) u2 l3 P
(replace-item 3 trade-record-current note)
6 ]6 G/ w, ~: k4 B8 o
3 q0 K& T0 b  Z4 H$ O6 c
  i. v. Q5 g0 b! M7 C0 Q( n
ask customer [. c3 P4 q0 ~1 R4 F! y& e: n: |8 N) D
update-local-reputation( t+ e' m. ~! K- }& b
set trade-record-current& r( I6 `) B5 `; [* K  W* I! ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; F# c  w8 }7 G' C* N: `& K1 {  m
]+ F3 V) t2 _4 t( B; T9 \

8 T7 F' x9 Z* g) A  e& |

# [/ H! Y& @! H6 c  W% \3 nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 ^$ r5 @, a" \, ^5 t9 K3 A

7 J+ J. z4 S: m: g! Qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 p: B( a  i) U2 e;;
将此次交易的记录加入到customertrade-record-all
6 ~; T; }1 U/ |end
9 g1 F: t2 c$ R2 P1 d- @. ]: c+ {+ Q/ C1 h
to update-local-reputation8 \! V0 ~  b5 @" G5 S) N
set [trade-record-one-len] of myself length [trade-record-one] of myself7 v) ^$ x+ \: y/ X' U

' T( l# Y2 I& \, n: [2 S& E3 N: ~! N9 D
;;if [trade-record-one-len] of myself > 3

2 U7 D4 S% d8 @& [3 qupdate-neighbor-total- X3 h* C& I6 v
;;
更新邻居节点的数目,在此进行
/ r  I9 U$ {( A9 p7 ]let i 3$ q/ J% [8 ]9 ]0 ^  [" e$ {
let sum-time 0
, r6 [0 E$ u) ^; @" I3 T' Z9 E0 E; z( xwhile[i < [trade-record-one-len] of myself]
& [! p7 x/ ~/ l2 A. A7 E  v[3 O& Y$ f  [& x$ g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& f3 k3 V) ~/ \( K
set i
0 H8 t& e  I. x( \1 A2 c0 w( i + 1)

* u6 j# C) E/ V# \! `]2 {% ?! H$ x) ~5 @* P! R
let j 3
- C# R! j+ I6 dlet sum-money 06 F7 U) m1 t: M$ S8 n3 e9 b& C
while[j < [trade-record-one-len] of myself]5 c& }+ {. z+ O/ v  x
[
9 g) N& b, M+ [' _: [: Kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* S: h+ z0 q( N* b. L$ I
set j
: `! b8 O' q# v8 b" p9 x( j + 1)

6 \+ M$ X6 ~! t]& s3 L4 _/ j. F
let k 31 ]8 M$ `2 o  R) O. L  k! a' Q
let power 0- w) {' b' D" |7 n$ ?$ K
let local 0
$ Y  d1 a+ R" ?+ J2 ?0 ~, t, nwhile [k <[trade-record-one-len] of myself]% |# J5 [* B; q0 {1 f: K, p* y  a
[
) y# n1 ^( m/ \# t2 j( N4 \- uset 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) / d# I$ k1 ~8 x4 @
set k (k + 1)4 [( c4 \0 P& W7 S" p( _
]0 y# Z' L( i& j+ b& m' t0 X
set [local-reputation] of myself (local)
# D7 X; o" ~  x& o& W% ?end
) }6 u7 v: E, \- [
4 O6 s& z) \8 x2 g- fto update-neighbor-total
# g6 @0 `. I; R( `- z! E6 F
1 B3 \" V# G+ }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ m: ]4 f6 q1 @  ~
: P: W1 C( c, S' ^/ o
& x9 ~6 a9 ]) H! j1 Q
end2 k; }6 n! H' E, Z6 T5 t

$ p* ]6 v- ^0 h; q; P1 E1 ^4 vto update-credibility-ijl 0 a" V2 `9 f) Q1 _" R, h

% ^) G( G$ E2 B% s$ @  k. S' M;;
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。# f# D5 }( }+ Z% {2 B
let l 0  \0 }: D# c2 y/ h1 |6 a/ B6 O
while[ l < people ]
, m5 `2 i( `* v5 b6 ?( L/ e- ^;;
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$ l9 F& P2 K( K$ g
[+ O& Z' x+ ?+ w+ d' [1 Y6 H! p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( S4 ^. M; g( ?, M
if (trade-record-one-j-l-len > 3)
& ^3 Y5 n, w8 Q9 G. G& c[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  q! y4 I9 F3 T; F
let i 3
: X, P% A" p( H- \0 W- Flet sum-time 0
* D$ p. q, W: O7 z4 Ewhile[i < trade-record-one-len]
9 {  G3 z  U3 V1 X6 }! @* j: j[
5 T4 Y3 X# {) l5 G$ n) L$ z8 R# Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* [* W* t  h( sset i9 w6 E6 G$ {. Q4 ^
( i + 1)
# n4 b0 k2 ~9 i
]
. R* n. _; R- S+ zlet credibility-i-j-l 0
" o$ l! }1 f- c" e. l' G! C! m;;i
评价(jjl的评价)
, |+ W  [) x) Ulet j 3. L6 @! u+ k  h! ^4 l
let k 4
% M; \! I% |3 ywhile[j < trade-record-one-len]* g# C2 S5 h" S: I0 Q7 i
[; \" M- n; Y8 |) @9 f9 I( V5 u3 r
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
/ W. r0 j6 A& q# D3 d( Bset 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 e0 l1 y8 R* }$ X8 p4 q5 \$ D" vset j, i7 u0 t) p- [
( j + 1)
; o) N, L6 x% r" A
]" y% k# G% Q9 X& z: u
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 c# @( o3 I& Z+ h4 ^- ]  ~7 l2 ~9 l9 l

7 T- W+ Z3 a' f* [  slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  u/ u( n0 j& `9 X- l7 d;;
及时更新il的评价质量的评价
: |1 A  N. [8 |1 f# H+ T) ^! sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* u+ K# T- m+ E5 ]: [- I
set l (l + 1)
+ x1 [, m- i" z1 d9 }" j]/ k4 z# s! I; t3 G- m8 w  E: B0 Z; K8 c
end6 i  x' ^6 V" m2 C8 @. g

5 \% J8 G6 e  Pto update-credibility-list
  S3 Q! }1 Y1 W0 X# I! o$ V% ~1 glet i 0
& p4 M  A" E# s( o1 X; E; _while[i < people]& ^- c. B- p: W4 |3 t$ W
[3 r5 o. q& B; j' C9 _
let j 0
( [" U/ }. K. c& q/ \* W8 O- xlet note 0
2 z7 B6 U3 @+ F# h5 n! slet k 0: q4 f) p2 p1 W  b0 i: j. M
;;
计作出过评价的邻居节点的数目
- o& d. M5 Y  v: S4 ~1 H9 ~while[j < people]4 }1 j, ]" y2 k, F0 {, ?
[
9 X8 @) G1 |$ ^1 a) {$ [5 {if (item j( [credibility] of turtle (i + 1)) != -1)1 L2 e, U# L" h2 |5 ?
;;
判断是否给本turtle的评价质量做出过评价的节点
& g& `' [# e3 c[set note (note + item j ([credibility]of turtle (i + 1)))
7 C) J0 P! U; s+ Q6 `4 N; p;;*(exp (-(people - 2)))/(people - 2))]
3 U$ f( V+ D% }; [% H9 N$ c
set k (k + 1): J& M/ u& j) P7 h
]
2 |2 T- s! L3 S) qset j (j + 1)" z1 D) R8 H2 p2 K! d
]
2 H! r) w2 O; n; e1 Bset note (note *(exp (- (1 / k)))/ k)9 h. I& o9 v  h' v
set credibility-list (replace-item i credibility-list note)/ X% X) @1 o( r) \! [
set i (i + 1)) X* g4 B+ t* ^, z; ~1 l2 b
]
  L" L. `' Z7 @- C: N4 r: eend5 J$ X8 d3 N/ C1 r. [

* u( r2 u7 _8 l# Z4 k0 }0 {+ Rto update-global-reputation-list
6 Y" S' Y" ]7 {- D; n% _/ blet j 03 {. C3 M" z. V9 z& r' A0 e, r
while[j < people]
: g9 ]: A; E+ N( ]. o[+ C* u% k$ _6 c( m  r
let new 0/ Z1 ]; @" l% R5 ?8 C2 v
;;
暂存新的一个全局声誉
: {' Y( c( l& b  f5 v& Vlet i 0
% G+ h2 r, @0 V* Z- e2 O0 \# \let sum-money 0" J7 @) W8 D( {) S
let credibility-money 0
0 J/ u: R: q" O6 Kwhile [i < people]
  z5 U  |- n0 P7 Z) H- J0 {[
# c& u9 Z  z" o: ~# Sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 d6 J3 f7 K8 q0 n. \
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- q# T$ o. s1 b: w/ l' p; e
set i (i + 1)
& Z" d8 F% P: C1 I$ ^( A6 ?/ h]
; K! o" T0 ~- M% Ylet k 0! H* N% h+ v2 o5 R$ K
let new1 0
' U' `# ~" I( {' D+ n6 Bwhile [k < people]
' s9 {2 G# d' j! k5 P[
; @6 K1 W! ^' M0 D' J% Wset 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)% K9 W' T$ R) T, |5 g/ `
set k (k + 1)
$ p% q7 l: ~5 {: C]+ B; {/ B8 L; A9 G4 v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + k3 @6 {; y% s: D" h( `9 r2 L
set global-reputation-list (replace-item j global-reputation-list new): `& [) M" Q+ h& A( C  E2 r, Y
set j (j + 1)
$ V6 J/ a$ }9 M6 o  h5 f]
$ z( k6 U; k( E( [* z5 yend3 T- I2 _5 Y- v* W  f* O8 O9 M
7 k7 a- w  J, v7 c7 c2 [
+ Y# j: u* I! f& B; S( M

5 Z2 l* D: L( X  h+ M; a* Sto get-color
+ Y, U1 Y8 b6 A7 X, k4 P& T  a
5 e, L; m/ @# z( dset color blue
) o: y3 y5 J# a) A$ {- u& y
end
8 _" n" J: E* W2 n% d, S' _5 j! [; i( ?+ \- j. i
to poll-class
7 ?( i* E6 h. L, O5 @: \8 ?4 nend( N/ g4 _8 r! c
) N% L" Y3 }- ~$ c( |7 ~0 v4 n, n) D
to setup-plot19 m& d: V: ^) s
9 T4 @( \9 T9 u
set-current-plot "Trends-of-Local-reputation"
4 P  Z# {1 X. C8 Y% e
! Z1 y6 z8 o2 i& ~! N
set-plot-x-range 0 xmax
7 e% }0 s. W! G
$ o+ w, d$ e9 r0 I- N
set-plot-y-range 0.0 ymax
+ B0 R7 e8 x# C
end" s. w1 k: J  |1 n) x

1 x: [0 q1 S6 R5 T1 e- `% R$ ito setup-plot2
& C4 W5 A$ y6 t+ w- ^/ v. k! L
) e( M  @1 j& H4 }% K& Wset-current-plot "Trends-of-global-reputation"

( B9 \3 E" @7 a+ F) Q9 O1 u: \! k. ?0 `/ h) y. I
set-plot-x-range 0 xmax

& [" c3 f# }. h0 Z9 \+ i. a$ c! c2 _) t' c6 N
set-plot-y-range 0.0 ymax
( o7 g4 a" [+ f- B% A+ f+ O
end
: k  W- @" D) T9 A1 M1 p: x& S+ Z9 |* G
to setup-plot3
' H3 e0 B( o$ m5 B7 {' ^  f+ @  u# a9 B7 k
set-current-plot "Trends-of-credibility"
$ {  g0 U& {1 d
. l- V6 ^& G$ L& G9 v
set-plot-x-range 0 xmax
: o! ~# y! o5 k% p, B$ l4 \( `, z
  a9 M2 g$ ~9 f( r
set-plot-y-range 0.0 ymax
9 @6 [+ y1 w: D4 a  {% j
end, N! K2 l" M$ C
- I% ]& n, G1 @
to do-plots
; T, _6 D( P1 Y" d7 i+ {) ]4 z* Tset-current-plot "Trends-of-Local-reputation"* c! ~4 g( z/ r  J8 F. t! ~+ G" e5 X
set-current-plot-pen "Honest service"
9 I" ]9 @% q7 y9 `2 Mend
) a- N  Z1 F+ |7 k/ v7 c$ W- b4 ?. V& q3 b. W5 K$ e% M
[ 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.% s, D' z! x: q' @- @
8 J* m6 C, C# r- V$ D
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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