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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:/ Q; c" q+ j8 p  N4 |
to do-business / s% ]% E1 N$ M9 m1 C
rt random 360
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ifelse(other turtles-here != nobody)[
! {% U# Y. z: [& b/ J+ r   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.5 i0 U1 U7 J7 d$ Z* v0 H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % J/ [) o- c4 z8 X  Y; e
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- G' y# y: S: W   set [trade-record-one-len] of self length [trade-record-one] of self
1 w2 E, i& E/ _% q; @: P   set trade-record-current( list (timer) (random money-upper-limit))/ L6 F- A2 q* J; g2 j
; e3 J, [: [* P2 `+ U5 B) w9 I, H5 M
问题的提示如下:3 V! ~7 X. g* |  J
+ z% o( j) Y( X  _2 O
error while turtle 50 running OF in procedure DO-BUSINESS
) _' M' u( o, f# f+ I+ I) S  called by procedure GO
/ e( A/ @9 U0 }OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 S; [# h. g3 s8 I
(halted running of go), c  \- N7 m- b

, W! L& S; [- b. e9 `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~~
& g7 y% T4 }+ Z5 u& g8 ]- |3 B  V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
: U/ x- r' w  \- c8 A2 zglobals[8 w1 Z4 n) Y" L* `* A5 \
xmax
! b, W2 R8 i  f1 Z( v7 f5 q  oymax" h& a0 Z3 i! i5 f% z5 E- B/ f( f
global-reputation-list+ e' E) |4 S- C/ G
$ ^7 r" Y; b  h: K1 S! j: v: {0 P# t
;;
每一个turtle的全局声誉都存在此LIST
2 o8 v3 r- C+ J# K) ^. }credibility-list
# D0 O8 g( a0 `" i7 \9 H# U0 l;;
每一个turtle的评价可信度8 [7 w( \9 o' e) G1 r& X0 S
honest-service, J7 M& H+ R5 g% d' d7 B
unhonest-service
; z& Y' \. S! A& `oscillation
) q; \1 _4 [4 R! p, o0 H" \) wrand-dynamic
( C, e: t( r& e]
4 l; t3 J; W: @( C# u4 U* v2 T5 Y) i9 Z6 R" y4 D
turtles-own[6 l7 O) `7 M8 u8 K9 {
trade-record-all
3 ?3 k  m' O. \# U;;a list of lists,
trade-record-one组成
2 A* n' @- G- A+ p) s( itrade-record-one
+ u- q3 ~0 c* m8 O* G9 S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: r0 g7 Y# [3 B6 m* B% U& m- n8 d3 A/ V
;;[
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]]
! ~( ]" _. q2 y1 z7 ntrade-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]
; `  C! }! r/ O8 z4 Q! `: v, gcredibility-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
( O# i: {" U7 F: V) b9 {. p1 S' Zneighbor-total+ o6 }& G( G/ B, s
;;
记录该turtle的邻居节点的数目' y# y& \9 j. Q& a8 E0 f
trade-time7 L# Q5 \4 \; O' h2 M* O. O
;;
当前发生交易的turtle的交易时间  N; a2 s: E* @1 L* h$ C
appraise-give& h$ B% ^7 o: ]4 B" Z4 H6 E0 d
;;
当前发生交易时给出的评价* o+ s; ~0 G5 W% Z6 }! `5 p. W
appraise-receive
: d8 h. ^, q  T" K% I1 s4 o;;
当前发生交易时收到的评价
7 p" R: S4 e$ D, sappraise-time+ D8 H5 I# ~# h* [7 z
;;
当前发生交易时的评价时间3 Z9 v& t5 ?6 @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. A9 J% H1 g. g2 \trade-times-total. p% S' ]3 ~6 k" l2 O
;;
与当前turtle的交易总次数
8 U" D, D1 f! P+ S0 ntrade-money-total
  [6 Z; s: a( [9 |. X$ P;;
与当前turtle的交易总金额
3 h0 m. @2 ^. ?; H. ^1 K9 nlocal-reputation4 e8 w- E1 n" l, E0 s
global-reputation
) f3 e* H* h. n8 K3 Acredibility
4 D- ?5 x% l: B: t- v3 P, d;;
评价可信度,每次交易后都需要更新$ ~- _$ b( s5 x/ Y+ {! }& W
credibility-all. {7 L/ M/ s4 s. B- p
;;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
3 J" n  b9 c: E1 W& l- W  h  o! ~- }& B, Q$ S" _2 O: r5 M! e
;;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
6 W8 Z, Y6 s0 _0 j4 c; k4 y# Dcredibility-one
( |" |0 g& o' P9 ?1 i2 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
. D6 X+ A- @- E9 c% nglobal-proportion
/ m% n$ h" f7 Mcustomer
1 g" ^0 Q' B' y1 T  d% Vcustomer-no% E; |- ?+ Z6 }/ ?- M
trust-ok6 `9 h) B2 k7 o; f! b5 v0 w
trade-record-one-len;;trade-record-one的长度( W- F9 n3 j' T0 u! E1 g5 o
]: f0 H. Y8 _/ u" ~# C- a) W- J

) b! {6 g5 [' J;;setup procedure* |! P/ V/ {3 ~0 V4 s

4 t) B( }& y% rto setup
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ca

6 [6 ]* L+ _7 |0 V
2 c4 w8 L3 X/ N& uinitialize-settings

# }3 `* N6 {/ U3 ~# N- [7 ?
- Z& Z' ^/ L  a# jcrt people [setup-turtles]
! q% C3 n" S( `+ @* v) ]
9 v* F, H! o3 g* z- l: O$ n( ~
reset-timer

# b' h: \5 j8 n/ Y( v2 Q; ?' y! a: T5 B* H3 }: k0 t$ C
poll-class
* V9 U% Y* W" U' Q. U& H% w
( u* \3 S% a& R# ~0 ^
setup-plots
* ]! R3 C6 g9 S2 L" J" X% O
1 {0 s# [7 @& E% w3 z( r
do-plots
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end. z6 {5 @' F+ r! O
: X7 s; Q* j" _" Y5 g" W
to initialize-settings) \; |  Q& [3 s; N( }
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set global-reputation-list []
& H, s4 j. m5 Q

: ]9 C9 `6 I! ^) V/ F' V, sset credibility-list n-values people [0.5]

) ^) f0 l# o, d; r2 X* `5 R, D3 W: V( l; d+ E0 M
set honest-service 0
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% S1 l7 Z# @) ^& B3 a8 U/ o
set unhonest-service 0
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set oscillation 0

+ C: ]: `/ C6 N1 l$ I8 c0 Z$ Z6 k
% F1 E" L# I$ `set rand-dynamic 0
& Z* `7 V3 h4 b! v& O  p% x
end
- e$ S" B) F1 X( P2 D# L* R; m0 f% e$ [. ~  F( p% {
to setup-turtles & `5 @9 ^  ~! H3 L7 ]
set shape "person"
! y- @8 d4 [- F2 C! Nsetxy random-xcor random-ycor
0 d/ s% A4 |3 ]9 I3 [set trade-record-one []
+ t7 r$ P# t! e

8 E. B& E9 {( Jset trade-record-all n-values people [(list (? + 1) 0 0)] * R! S9 ~/ G- _+ ~& ~, A0 F
0 h2 s2 E  n4 \5 T. [3 d
set trade-record-current []& m+ J9 e4 i& {9 R& N
set credibility-receive []8 r5 V# X' @: h8 ?# Z( Y3 Y6 J+ X9 O
set local-reputation 0.5# R& d8 f7 i4 R2 A" q* f9 l+ L. Y
set neighbor-total 0
4 ]" U6 z7 e* I& n+ H. H! kset trade-times-total 0( G7 B: I$ X) a6 M  C% c) t' E/ k
set trade-money-total 0' b& P" b  d0 P
set customer nobody
" W0 I2 ^2 O4 X& t" \( I# ^) a: Iset credibility-all n-values people [creat-credibility]0 q. y; D$ u/ V9 d3 n! M2 @6 ~
set credibility n-values people [-1]
( `/ ~9 p# J' X' B" eget-color2 m6 d% X: t  y- Q2 f* n6 U1 |
: S% h9 `! y5 b+ E" E
end$ T( f  i2 L, B- W& s' F
0 u; B# ]2 r* K3 R. }/ |. \
to-report creat-credibility
  q( d# m1 ?7 j" _4 l" h$ Kreport n-values people [0.5]8 o3 H5 x+ l4 q1 k
end, W) w5 P4 F6 w+ {  U( L7 [& i
( I1 w6 Z9 N& u" w! V; Y  R
to setup-plots4 }/ {9 ^2 B0 _6 b( y$ G$ t
% n9 \+ r: a2 {) h# k/ F# i
set xmax 30

1 ~2 M. y& W1 i9 g0 ], h( {% _4 m  ^: V( E
set ymax 1.0
- v5 G1 B) n4 G# Q) u( ~
+ Z5 P: v! @& B0 \, {0 N8 {
clear-all-plots

$ B2 \/ i( O8 t5 f1 k8 Y
& Q7 g3 ?6 |( A" Q* asetup-plot1

8 X/ z6 c2 G. l1 b3 s* `7 O" n' J$ ?3 J8 d5 |& h
setup-plot2

* a- L' Z- u3 [) z% T8 N; ^+ w8 f& e4 _' R* C' U
setup-plot3
# B2 J9 \# S5 z, h; O* p
end+ Y2 V2 \: ~: K- Y, D- F4 z6 h

4 o0 C  H# G9 z5 w* d. ]; W: f: w;;run time procedures1 b3 T: Y) C1 t+ b! _8 Y5 L

$ |7 q( B4 `1 ~to go) U5 u8 i/ z  A. j) @8 C( A
& Q4 ~, C- d% h: W* G9 o: U4 n) u
ask turtles [do-business]

* q6 D4 f+ L, z  Aend
0 {: B  G# M: R6 x# O
7 U3 \0 o6 H2 b. V5 @. y/ v+ Vto do-business
, k0 y, \& }3 v8 }8 u$ Q! x3 e

2 [. I8 ]: z8 d. w9 s0 w) G" d# d% u% U8 v0 ~, ~) _) ]
rt random 360

  s& t/ z$ U- ?  M' D  V* |+ I# [/ a& G! V
fd 1
: E& N- G9 P2 N3 J/ V, F4 |& Q

( X' K. s( K& L. eifelse(other turtles-here != nobody)[

; d9 g, G1 A2 a3 T) b' h, q! ?7 L
) i. o/ S0 ~: a5 s/ ^set customer one-of other turtles-here
% k. v) X% i) W/ I2 S

7 `* E6 h, T& u: a4 e, c;; set [customer] of customer myself

1 h2 k, g- `- j  b# y! G, x! P' H; V2 Y, t) z) y, i0 n& z
set [trade-record-one] of self item (([who] of customer) - 1), u, Z1 n# H" P2 M) T1 E" [
[trade-record-all]of self
# K; L7 A8 u4 N' u1 Q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 V' S+ Y4 W8 k, T- V

. G- ~" Z& k5 ~set [trade-record-one] of customer item (([who] of self) - 1)
# a$ ^0 C+ J& _; U/ n$ H[trade-record-all]of customer

( X" q8 P8 B! J: U% L+ g
' m$ `" Y$ \* q9 ^set [trade-record-one-len] of self length [trade-record-one] of self
: A) ?0 M* z5 \; E8 v/ M
9 L' p- o- e! M6 n' C. s
set trade-record-current( list (timer) (random money-upper-limit))
. {! a+ I' r8 R6 @6 q
: y- y2 C/ P4 y, z7 B* L- p
ask self [do-trust]7 R& y3 e) F6 w3 s( s3 y8 q
;;
先求ij的信任度) d2 p1 d& A1 a9 i

; K) ]8 ~1 d6 U. b! }) Y% aif ([trust-ok] of self)
$ @0 U+ p# L0 C  d;;
根据ij的信任度来决定是否与j进行交易[& A7 l0 S, G1 D3 T9 |
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 E: {8 C* H/ _/ c
) X7 i- o* z. m6 u! z[
/ I- e. Z' ~0 O4 t  K8 @& e

3 _% M) ?/ B1 B, J* W1 tdo-trade

" H4 L5 f7 U( o4 v* I' W) W, w0 L; j: n( B
update-credibility-ijl

* c6 r$ K4 N/ I( r# ^0 t: d9 u. w0 R/ h, F8 E1 W
update-credibility-list
; A! P& K0 F6 i+ R2 @

; w# W! ~( Z3 N3 R4 f
! o( u7 x; @6 r  h* k6 `update-global-reputation-list

* @2 Y7 f& O3 a2 g# x( O
, M9 S4 T3 U$ {* s( b+ i& b: S! Wpoll-class
' M# g% X) @: \- |! }- c
/ Y7 C2 u( c4 C+ w* F
get-color

* [( L' C% l0 I+ v+ r! e& A" u  r& D" k
]]
. e3 T( M2 U. w8 m! K  E+ F9 i
% X& |) {! R- D: s8 D2 }7 R;;
如果所得的信任度满足条件,则进行交易
% T) x7 r4 l8 @: f' J" L1 E0 C- V
4 f0 T) m" c- E: _5 W[
# `5 k5 T( ^1 ^4 [1 P2 T
9 z) k6 ~0 P$ ?% c9 T' _
rt random 360
8 M' k5 h# [' G+ B, N0 D- e

/ z6 h) O6 i: [fd 1

+ M+ F' H' b  q/ d. y; z9 A$ l9 j
2 {0 S! ]: M) g7 W" w0 T& B]
/ q! o/ e: p: r/ K! X0 |
6 ^1 U6 T6 ?: x, `: h  F
end
% ^+ U1 n9 W9 V9 E' w' z

# e0 w7 o: G; c/ C: o" Q, v7 Lto do-trust 0 J; F( N5 E& ?+ P8 C
set trust-ok False
/ e, Z# l3 d5 l* E' V: D( r0 b: C  z" c8 T$ k  T

( B% N3 D: i# o4 t) }let max-trade-times 0
1 k, A' s! b: P9 |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' ^7 V0 [' i( ^( ]
let max-trade-money 0
- `/ E- _& a8 U% D1 Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 Q' M* t' K$ i) z& l1 N
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 ^# a! l& F9 t* _( |

( n- z( N% m0 t- h- m8 R
, j6 f) Z% }. Z+ O  T, n
get-global-proportion
6 g, R* Q) l1 K' slet trust-value) M  P: Q8 I- s$ b% w
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" v+ \! Z; G. S5 L8 H% L
if(trust-value > trade-trust-value)4 S; W' I7 ?  Q; A: \- b6 g
[set trust-ok true]
; v# n* q2 ^) I* u8 W9 yend% ?% L: [; O  k+ J2 B% m$ _
' R, U. p0 @4 c+ V( ]; i
to get-global-proportion5 A9 F8 L5 ^: m- g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% O% C5 V$ n* @0 _. k
[set global-proportion 0]
6 C- y+ v  j+ w7 w; h! k[let i 0
# L# S8 u/ U$ s9 O/ U5 n) Rlet sum-money 0
0 g# [3 j5 |! `) ^while[ i < people]3 J* ^; `: Q) ~" Q" J) P
[) e6 V5 R7 o; q2 ~
if( length (item i
6 n5 V* m/ W- |- d+ z[trade-record-all] of customer) > 3 )
7 R6 u- W! e6 B. M+ d* n; ?
[
, \8 p+ C& d* B9 A  e% f6 Tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  u9 q5 L" c3 @, u4 D]
3 ]9 v2 }- H* K. D4 U" \]
3 N. g1 W& D: }9 \5 Ilet j 0
( v! x9 _) y. D$ V3 @9 h, Vlet note 0
9 {9 k% L, F* Gwhile[ j < people]+ }3 k# \8 U6 w7 X! A
[" s% x. E/ i) {8 H. X1 w; t, a
if( length (item i; W8 r( G1 L) y1 N% l' C
[trade-record-all] of customer) > 3 )

# }; N7 \- C) ~  J# A! Y4 i- M[3 A$ @$ n4 y. [2 z( [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' i6 ]7 E/ e" n9 `2 x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# e4 o8 I/ {) r- h$ d4 B, s/ S2 T
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( i1 i/ W% ^' e]% n" o9 |) P  G# x7 |% w+ M3 \
]. L' o9 [4 h1 X5 ?# ~8 k6 }
set global-proportion note. j' I" o4 x+ E3 ^! s2 G) o
]
, x' ]$ y& m$ S+ P5 m6 u: E4 hend
* {% r7 @" j; e! @# U0 E, l2 ^8 g6 U: z* T6 v( R
to do-trade
9 a' Z6 I$ |) ~4 m+ K* x: y;;
这个过程实际上是给双方作出评价的过程4 w/ i7 \. K- J; d! p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( R" D) F& h, v! S" Y" B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 z/ i/ |5 _9 }; Uset trade-record-current lput(timer) trade-record-current
5 e0 q2 w- e( p0 {;;
评价时间
- k! g. ]2 i1 O& L& xask myself [5 ~2 a/ a  ^4 E$ P% h5 ^
update-local-reputation
4 a- S( @0 Y- Q+ I. O, l& E; kset trade-record-current lput([local-reputation] of myself) trade-record-current
+ u" P+ d! q" B* a( m9 g' r], M# x& f: _3 g; r" [. A" N
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  ?7 W) I. Z2 a5 y2 I. v9 W
;;
将此次交易的记录加入到trade-record-one& @/ z/ [1 |8 v8 t' a) ^* H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& F* C. f, z3 a. F' Z
let note (item 2 trade-record-current )
5 r7 M3 L  \9 x- W  Cset trade-record-current, k+ c; f0 |7 [6 a+ F1 k
(replace-item 2 trade-record-current (item 3 trade-record-current))

% b+ P9 f9 u' i' r5 _9 d9 ~set trade-record-current& c7 g2 w5 u; I* E
(replace-item 3 trade-record-current note)3 i1 Z6 S9 e& `% L
/ O( u$ x9 W* l" H3 U! B& I
3 W) x* j- e7 q0 q1 p5 ^/ \" R
ask customer [
0 R3 Y/ o9 p9 o9 `- cupdate-local-reputation0 n. t0 L. O% a0 l- Y
set trade-record-current% A# k: ?2 n) h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; H( @% \9 g- P; a0 V* p) y
]5 E# u9 p* \9 ^+ @) H" A3 v2 }
: ?* q/ a( W' K: I& z$ N7 t/ E8 ?3 s

7 Y; ]" t5 E- fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: g7 L& C$ e$ x" j0 m0 r9 o
2 a2 ]6 N, z6 q3 X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 j7 I  H0 M+ v
;;
将此次交易的记录加入到customertrade-record-all! x! v0 A9 A: J+ B6 I7 ~
end; h9 p6 [1 a9 `# T
7 V: F+ b& r  W9 C
to update-local-reputation/ _+ a/ ?4 o& n8 v1 h2 \
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ c0 L" H1 G" n
' D. s2 {" F( h& p# ?+ k4 r) b" a
! \1 i1 V7 L) _) A& e7 ]3 m( ?;;if [trade-record-one-len] of myself > 3

$ o! D8 b7 @1 `) [update-neighbor-total
$ y2 P. j4 m$ O3 S7 @$ ~;;
更新邻居节点的数目,在此进行
6 |5 q4 n4 Q& B5 Z5 \let i 3
1 J, [# Y! a5 ?+ r8 s+ q' \, D- q9 _let sum-time 0: U! L* Y2 ~/ y0 D
while[i < [trade-record-one-len] of myself]
/ Q* ]3 U: D8 M0 r8 f$ y1 @[
) o4 b) `2 U8 r9 Oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- J6 y* N; g9 T
set i
9 u# z5 F3 _' r9 G- l! n; S0 B8 |3 ]( i + 1)

/ v9 O4 ~' o; @( w6 \6 z/ S/ ^]5 Q# o$ n; q) }+ S* ]3 a" [2 Y
let j 3
8 ]1 O9 p4 W" P5 {2 l0 Alet sum-money 0  B5 s- M% B0 v3 n" _' @' L/ Y! x
while[j < [trade-record-one-len] of myself]  g5 j4 u' K, R1 @
[! K0 E8 K: U2 M
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)
( c( u$ o$ O# }7 A3 r0 [5 zset j0 {5 G2 E/ r4 ^- d9 G1 i7 v
( j + 1)
# ~0 s+ f3 I6 \, x1 F, g' o
]
; J5 A9 L; A& rlet k 3
9 u' p9 k- q9 j/ zlet power 0$ F* ^  {  ~8 z# h
let local 0# _) f, u' ?4 L! z6 T* o; i
while [k <[trade-record-one-len] of myself]3 ~' J: N+ s0 I6 |1 o; B8 I
[
  c" H: I) v* t  F  U5 ^/ Xset 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) `( v  d* @' V# @set k (k + 1)
* b# b' Z0 a& U. O! h]. b7 j6 T# s" s& e
set [local-reputation] of myself (local)
) L" Z7 c) l! z& @7 G/ mend$ ?$ _" w7 J5 E3 N: @

4 C" I6 Z9 U2 ?. W9 Sto update-neighbor-total& l+ \1 {, x8 `; `( E

) q8 {' X' v" }7 o* D3 g/ H$ Sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& F" ^6 d' X! J

! O# E. M; \0 l! i1 e
/ J& _6 u8 u7 F; k, E) M( N
end
/ n% h# ?! u, o+ K6 U, W& S9 d+ z1 F! b/ `$ K# [
to update-credibility-ijl # s! Y' _1 I4 U8 [

7 m% c, g! u3 Q. K! J;;
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。1 I- p' J, x/ T+ g1 |, Z7 \
let l 0! a3 E6 O- j3 Y) E- Q2 \
while[ l < people ]
" ^; H, |% i. U: v! J" V( W;;
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
7 Y! \& k6 u: \0 t[
! \3 K2 E; k5 b) {- w$ R- llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' g! h% F% o/ ?5 G7 N( S  aif (trade-record-one-j-l-len > 3)
7 ^. V4 p6 B  O6 X+ f[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-one4 w6 w: K& |1 n+ \
let i 3/ v* y+ U! t3 R- L
let sum-time 0# H; f9 e' S( Z, c9 h9 {
while[i < trade-record-one-len]
* X+ v1 N. m, U0 |[/ O  A1 c+ E4 Q0 {& z! F7 g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 n9 B9 Y1 V2 H9 G! b3 {9 H; dset i
, }+ Z  {/ l- F. a% a+ c: t( i + 1)
8 s0 D5 q4 n6 |3 q% P) X2 Q/ k
], ~. V& q. b. l+ n) {
let credibility-i-j-l 0
! l) R( H" I3 y+ a. [;;i
评价(jjl的评价)0 c4 o4 k9 R3 |7 U
let j 3
9 ?9 ?2 q/ u& Q; z; z7 {' e- p& Clet k 4
" J* K/ \2 T4 r8 p& H9 F# t* Lwhile[j < trade-record-one-len]
( g3 w; D9 {  ?, `( q[
! Q+ {& e. X' Uwhile [((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( S" T* }  Z4 F! f
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)
* Y8 l5 t- o' w7 k+ T: c; oset j$ G4 y& s/ q+ |( v1 W4 Y3 w
( j + 1)
& ?8 B$ U8 }; d/ P
]2 S0 M; N( J& G) \' _$ C
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 ))2 P  }1 x5 ~) P- h+ H# U

3 p1 d) o% Z) H4 x; @$ e

: q% I3 o( A4 jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ j) K/ Q* _3 s- q# B' I
;;
及时更新il的评价质量的评价2 x' W: e6 M5 d' c4 ^
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. Z7 O& I( d8 `8 q: N3 B' _( t) K& x
set l (l + 1)
8 {: ]! k- _1 `0 v( C& u" t, ?) F' w]
* N9 ?" v7 j0 _9 fend) g. z2 n$ N$ X* N4 ~
( Q9 y( G" ?+ ?# L
to update-credibility-list. g0 v) g8 V  c/ f9 B& O
let i 0
; i: n1 u/ p: D0 w% c0 G7 ]while[i < people]
# Q" N  M1 ~- @5 c7 U) g' v[
4 K( v9 v2 u+ _4 }/ Glet j 08 Q$ g* u. ?% _3 E) Q% ^' `2 X
let note 0
. |( p( b, Q3 s# c7 y, vlet k 0
! |  V! K7 W$ c( c* U/ k;;
计作出过评价的邻居节点的数目' G/ T7 g1 \% {# I( {$ l
while[j < people]
% R( f4 W2 U6 `4 H[
" A+ o5 K1 ^) {' A! d" S$ sif (item j( [credibility] of turtle (i + 1)) != -1)
, i0 G' c, `- Q3 S( Y;;
判断是否给本turtle的评价质量做出过评价的节点6 w3 o  Q" N% X
[set note (note + item j ([credibility]of turtle (i + 1)))) z- O' i8 I! L( ~
;;*(exp (-(people - 2)))/(people - 2))]
0 N: T* c, X; {: u0 ~
set k (k + 1)% U# q4 \" f$ _3 G
]
8 W$ V# i, u) j7 \9 j1 Sset j (j + 1)
6 m1 _* c$ G2 t$ [" o0 g# H]# p0 P4 @& \* @3 }! c& D6 }' u
set note (note *(exp (- (1 / k)))/ k)' P3 Z' d( d, r/ B9 m! b0 q. j
set credibility-list (replace-item i credibility-list note)
( ?" F6 f( r* T: ]1 @set i (i + 1). `1 L( {6 l$ }
]
& i. |% J  ^; |. |% F$ l6 Z. eend
7 x# P  N6 B: ]2 _. `% n( H+ H; E+ |! G4 P9 }
to update-global-reputation-list! Q  @+ B1 V2 B/ ]
let j 00 `5 j  m) d4 Z4 ]) @
while[j < people]
* J2 N: A4 n+ {" l" u- g* n[# \& R$ Y3 P3 w1 j* E
let new 04 X/ _( V' a  x* d* P' U& a
;;
暂存新的一个全局声誉
  K* K- v7 s9 ]1 w. N8 f, alet i 07 V7 M5 Y' a( Y
let sum-money 0: V" h7 n" A. x/ j
let credibility-money 0. u6 W8 ]7 G! i) T# _
while [i < people]! C1 S4 ]) ^* ?" M# a
[; W9 P: x$ W1 l1 U. s, C
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 _5 e3 W7 f2 T+ }+ R: J* L5 |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& a1 P4 h; O: n- i
set i (i + 1)
3 k. M: |$ p( {]
  I; e7 s- n% J5 A+ |let k 0, n( d! G( w0 T6 k. K' A
let new1 0# P' \  A5 w( _
while [k < people]; Z) f0 ?1 O' z" U' H, V3 Y( _6 e- r
[
1 \1 ]1 e2 ?6 s. i; S1 _' 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); ~  P, x" |! a* `7 ^
set k (k + 1)
: B2 ]$ t3 r$ D5 Y; Q]' A+ y8 y* m; g) }) ]* I0 g; |
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , Z& |3 M" F- _- [; ?/ l& X6 q2 _+ Q0 y
set global-reputation-list (replace-item j global-reputation-list new)
5 v1 J& A% l8 H. qset j (j + 1): V! n3 @, R( Z: I1 l8 r. f+ n/ b
]
: Z! f+ l9 [. B1 n1 y: X1 h1 fend
% z+ `! p6 S+ ]# i: Q( [9 I& y- X
$ R+ }, N; f  F8 k! Q1 |
, Z0 k; S, }0 ?; B7 I  Y( H2 b+ u% b5 q2 H
to get-color
' {" @' T6 U9 v. B) V# S) V' S; R. f2 G
set color blue

& m% n5 V2 }. i/ Cend
5 t' x2 y& \; q3 t$ b  b6 s" R+ `, t( D0 ~+ o2 g5 `# q' R
to poll-class3 }, G4 |. T# A' D- w& w$ y
end1 _4 y/ g# d. o+ }  M
0 g; Z/ d5 R$ C0 G  N
to setup-plot1
) N( ~. }( B! p. m$ y& a& `& X
, f7 N' X! P8 V& ]set-current-plot "Trends-of-Local-reputation"

- W8 A- W5 f- Z1 j
& x. E1 r: A# W% V4 s' s' wset-plot-x-range 0 xmax
& y. Q+ W: w- E9 u
8 ~1 B/ y. R# C, t: N
set-plot-y-range 0.0 ymax
/ \" B/ k" L' L
end
, p0 V+ n" D! {% x2 Y0 v- j, @& Z3 @; W
to setup-plot2
8 e( Q# A) p4 j6 h4 `6 S
& q1 s1 E3 p; `4 Gset-current-plot "Trends-of-global-reputation"
; W/ B, s  d  a4 y2 S

0 W. Y' T" }. b( M3 o! A7 @5 ]$ Yset-plot-x-range 0 xmax
# V% C: N& `* A8 f, H% O; [' e

- A+ v4 z+ W  ~+ ^; Z* k% k& @set-plot-y-range 0.0 ymax

% a1 J+ K' }$ p) jend% k2 ^+ u# O' H/ X- U& @. R

1 U9 L8 u2 q1 W1 D3 E; {; _to setup-plot3
6 }$ c  K1 g# T  w8 Z& ~9 j; A
' z0 K, K9 j" Y9 p9 l7 d/ |set-current-plot "Trends-of-credibility"

. ~" L- W3 m' b8 b' Z( n
1 P6 L5 p5 S* S0 Y1 N4 c% Z; Wset-plot-x-range 0 xmax

: c- j* r6 g, ~1 z3 ^' [- U7 M$ @6 G0 T1 r3 |6 M# x
set-plot-y-range 0.0 ymax

7 k, U; i2 M' bend3 y' o% p2 \% ?4 z9 v

% b- W; Q2 s+ Q' xto do-plots- C% n  @6 Z4 \: c7 Y
set-current-plot "Trends-of-Local-reputation"- ?$ p( y6 U  [5 ?& c
set-current-plot-pen "Honest service"
# R# a8 x: Z3 w, h' K; dend; x6 c( j; [$ X% h1 B3 c* ~0 g3 Z
+ l& ]" H7 I7 K
[ 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.
' B- l  i; W7 s% Z
/ ^( ^# D& P/ P5 T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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