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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:
) W" X5 K3 z( ^1 t1 h( Q) W2 \8 Kto do-business
7 C) _' U' S6 Q rt random 360
" g$ z- \6 P( U1 E fd 1
+ Y9 T8 @3 i5 `7 b! P9 G ifelse(other turtles-here != nobody)[
+ v2 ]# A; X1 Z# u   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.1 [8 C* D- s( G2 x0 t- ^" U$ k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 H8 v- \/ y: A; y8 l. _) Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  T+ y( ]0 h; ?   set [trade-record-one-len] of self length [trade-record-one] of self
" V/ ?7 o1 q2 @5 L; X3 f   set trade-record-current( list (timer) (random money-upper-limit))
5 ]9 G' T+ j+ P9 y2 S7 v: m0 O6 B0 }: H
问题的提示如下:7 W& z. H* J' P8 T
3 ?+ \* C2 s# c4 R. X' `9 _
error while turtle 50 running OF in procedure DO-BUSINESS/ o6 K, l; W% i! ^* m+ i+ s! Y
  called by procedure GO* R" L7 z6 |+ C
OF expected input to be a turtle agentset or turtle but got NOBODY instead., {3 g+ b: S" }' |
(halted running of go)* `' [6 ?! O, E
% t( b% t& 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~~
% k* D/ M" ]- F$ d6 E+ H& w' a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
) E9 }: s7 Z7 K, Wglobals[
2 ^& I) c6 M0 g( i* \2 d8 Oxmax
8 _6 h6 u! E8 Cymax
. y3 P; @% y. @' \4 t2 w. k8 j% Qglobal-reputation-list' o: ?- ]; l6 t  O$ P
1 M4 [( C9 S7 u% I4 _
;;
每一个turtle的全局声誉都存在此LIST; ~$ [$ {' L5 M* u3 E* c7 Y
credibility-list* D* [. v; Q1 s+ e1 B: Y
;;
每一个turtle的评价可信度
! i$ p/ E4 w5 _/ S+ Ihonest-service
* D: e3 N0 c# ]6 }! M  y* wunhonest-service
* }2 Z% g( Q* J2 @2 K3 X# toscillation
6 T  g& ]; _7 h6 K- O  k+ hrand-dynamic! L4 |3 \# J% G' y& {+ B$ _; _
]( c  L, X6 O$ e: U( O1 y4 a

" Q2 h1 I* T8 o5 ^  H. Dturtles-own[* j( N# y, K$ d* x
trade-record-all3 P8 a; `; d# G( v& g
;;a list of lists,
trade-record-one组成
0 h2 }3 a1 _/ k# _4 `' ftrade-record-one
4 F1 s7 @* |$ e. D- b4 @2 S: e; q+ h;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 D. T. v  H, N8 B9 O2 P5 z! U7 v9 a
" g  r: j- B6 f4 @1 \;;[
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 G- U5 c, M+ f% E7 \  ]
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]% ]7 ^6 e0 i, `8 L& S  A7 C$ P
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
, N/ G3 C% R8 u- G3 f- Qneighbor-total5 W9 m5 q+ Z* U" Z. z1 f+ _
;;
记录该turtle的邻居节点的数目  Q5 X: _* s: e
trade-time
) Y# t  B9 S! t5 {( {  v$ K" r;;
当前发生交易的turtle的交易时间  N7 y& j4 ~: T6 t
appraise-give
, V8 x7 S, g/ ]3 f9 U; }3 e;;
当前发生交易时给出的评价" A9 b! X! ?' `) R" ~! I
appraise-receive
" b' Z* \' p( C! L9 W1 a$ b9 w;;
当前发生交易时收到的评价5 r- `$ l! g9 q$ a( C' J
appraise-time
! l( m6 |) Z3 |. G. K;;
当前发生交易时的评价时间
5 g# x7 \  I- a- X" j+ _local-reputation-now;;此次交易后相对于对方turtle的局部声誉( s1 g- v' u. i% O! {
trade-times-total: ?% U' `2 t( ?5 Y8 b8 u
;;
与当前turtle的交易总次数. ^+ `9 B9 m8 A1 m# Y: l0 h
trade-money-total+ D- P5 I8 ?+ ?3 L1 n. O+ N" K- x
;;
与当前turtle的交易总金额
- f$ \0 ?3 _2 _local-reputation. u- n" d9 H4 F
global-reputation0 x) `2 L, g  m( O
credibility. N$ Z5 r! b- |3 |; Y
;;
评价可信度,每次交易后都需要更新' [5 T5 D/ u9 G
credibility-all. `( V% e8 d# Z+ f7 b
;;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
) P$ g9 T' q6 u/ _( @$ q
4 F/ x, a- E" J! }  W- q1 M;;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- f$ R/ C. D3 J) i" J) L- e
credibility-one
! e7 V2 b3 P* q& V# f. e;;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
5 L' b# z& [; \0 p. e# c) P! ]global-proportion/ L) k8 j7 a- A9 ^
customer
6 t: y# _5 Z# \/ b9 Z6 V% u5 G5 a' x& Dcustomer-no& R, _, j" x% V4 c( p& {
trust-ok
2 q0 H4 z! C5 vtrade-record-one-len;;trade-record-one的长度
' o, ~( I, K0 E+ c4 l/ t]3 u- y9 N  H' ^) B( G0 ^7 M

/ B4 f. p# _( Z2 P0 E9 q  W) P;;setup procedure# ?& [, Z3 @6 |8 x) C

3 X) L0 X- Y# b5 d' U' Gto setup
$ A0 M: Y! d1 b! [" |; h! w1 t6 B1 B% {0 T, i' J+ Z
ca
1 ~6 o2 J( N3 r/ T
8 Q) ^- y" Y; d' t
initialize-settings

( V' f% H: f8 X- k, p- l+ F0 e& t0 E8 I- B+ h
crt people [setup-turtles]

. x+ t8 e3 v, d) @: ^
3 h7 M  D% d1 G5 G8 e6 Preset-timer
1 \* w" i$ ^* L' g

3 d9 g& E! h- r/ T5 Cpoll-class
; g% l2 j) y, E* ^: T
+ k6 l1 f' Y# a4 l
setup-plots
3 v4 n/ o4 h! g/ ?

! F- Z+ q7 {$ d% o$ J+ [6 gdo-plots
3 k, R$ q2 X2 i! G
end
( d" a! I& y7 z& j
4 K3 g; u+ u7 c4 ito initialize-settings/ D2 [$ N/ \7 x

6 f6 ~+ t$ O7 Y% S0 k- Xset global-reputation-list []
) ], |+ j3 L( @# D' r, E
4 C$ ?) q) D" _7 R, P4 z
set credibility-list n-values people [0.5]

' |: T2 f3 T5 ~2 {5 w7 D! B$ w2 e9 h) v% J% w6 ?. f
set honest-service 0

9 X  h: e" T3 b# M
9 T7 u" X; Y$ W( G) [8 aset unhonest-service 0
* X9 K! N4 U' v# f. N/ V
8 u$ u6 C2 D$ T) V+ m
set oscillation 0

+ C9 [) l- b& @2 ]& F
& [, I1 g; n  D. `/ L* dset rand-dynamic 0

" T$ C! V! t! A  u8 {2 send
+ r# I9 E% F; [& ]$ G
" w) Q) n+ C: K# ^3 b4 l$ Gto setup-turtles * W; Q* X; S3 h& L$ G  o
set shape "person"
* s0 F- Z- |# s& z6 V# usetxy random-xcor random-ycor6 \  y# t+ p8 K( U
set trade-record-one []
9 j! v  g1 e$ B5 f/ ~

$ J/ v, K9 y* K0 L" y. \set trade-record-all n-values people [(list (? + 1) 0 0)] 7 m1 ~- i. g2 ^

: a) f: x9 K1 \- @- i+ B) `% \set trade-record-current []- o3 Y/ n3 e, h( s- I) a
set credibility-receive []
: l0 M; Y9 V2 `set local-reputation 0.5* y% A2 M- m6 u) K3 T: ^9 D, x
set neighbor-total 0$ M* A- m% D2 f" B; d! Y
set trade-times-total 0& Z- W) J% D  Q3 Z5 e3 {8 e/ ?$ l$ [
set trade-money-total 0
7 V) _0 S* R  t6 f9 e! ]7 l& Pset customer nobody
5 w' k# ^) ~6 g0 _* `- eset credibility-all n-values people [creat-credibility]' o* E$ n9 y' u  S. ]/ v; n
set credibility n-values people [-1]
& u! K$ q9 X3 i+ ?" L" Z. \get-color. L# k( Y" P$ [; _

* m3 J* {( o" B6 j" j* b# qend# Q! q' D7 W, N- {! K2 j% C
2 K0 {* p( ?+ B2 ]2 _1 n
to-report creat-credibility
' @% a- d" W4 i' C" u' L' Z6 K( nreport n-values people [0.5]
8 j4 [7 I- m" B& V' [" \' t3 Q; zend- n2 C! B) ]. X
# E; j4 {- i$ k8 {; ~
to setup-plots9 k- G' F; G, f' v& g9 w' H# o$ B

0 e5 v2 Q* Q* a" K3 Wset xmax 30
& V- i0 A. P5 L$ W2 ]2 Z6 \3 o

/ u4 M: i# m  P4 ?9 Rset ymax 1.0
' N7 p* }  U2 R5 I
" x) P* u) H1 a' `
clear-all-plots
+ ], |; Y7 P4 X- d9 R: Q

  M5 `' V6 {! d5 Gsetup-plot1
. G, k. s! H4 p0 x9 T4 _9 G8 t
3 G+ S# L2 j1 Q* t  [2 f. b
setup-plot2
, ~' ?3 R" L8 n0 q  s1 |: g; l. b

: l# A( @' F0 o; y6 Z8 Q1 y% w% ^setup-plot3

2 K: k5 J" A5 |4 Gend7 X3 @+ G/ `" {' }, r& A
1 ?3 Y2 o4 c% S/ G6 T# ?
;;run time procedures
# }- {, T( k  X" O" u- ]3 \' ?7 n+ ?% P, G; }7 e8 A8 P! m/ {$ b7 Y
to go
$ G; Y& v7 s6 |- @& w: E
( X, p% ~- G$ L0 q5 fask turtles [do-business]
' A. B, B& M$ [9 K
end. a/ Q/ H5 y7 J$ d/ @. A0 v" a

8 B( D, S( P2 d2 @, Yto do-business
, Q' x" a, v( m# s( z0 p+ }/ H

. {" q7 V( r4 B) a0 L0 S( t
& u: Y: R# d( c! ?7 z( z0 }2 @rt random 360
( w  F) c* [8 p- z( d
! k. w4 c1 ?- A6 Q) z1 [
fd 1
$ z9 _+ I( `) F1 \  f
+ `9 k0 V. U1 [  m% D4 g
ifelse(other turtles-here != nobody)[

" f- K% Q8 [' m* Q: W7 [& @; e0 v
set customer one-of other turtles-here
, d' z" c# V2 }* \6 J

' S* l( |1 Y5 q) J# [% ?( v) W;; set [customer] of customer myself

+ ?% U- s* s9 j7 p0 ~8 I  ~4 {" A- c$ T. r) m0 h( e
set [trade-record-one] of self item (([who] of customer) - 1)/ \7 z: A/ \) l6 g# |  T
[trade-record-all]of self" }2 e4 j( w0 d, H# `: N
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 [. }6 H& {; o2 l" U3 I: n3 w0 J' t( Y
set [trade-record-one] of customer item (([who] of self) - 1)! g# n" L8 \, h# X5 ]7 M6 D& @
[trade-record-all]of customer
+ \. Y( \9 U/ i3 U

' n* }+ {) N4 {! M0 zset [trade-record-one-len] of self length [trade-record-one] of self
. w, L. j6 C% s2 V6 U
& ?+ {% M; S. L4 C9 S
set trade-record-current( list (timer) (random money-upper-limit))

5 s& F) e# P3 S: u7 |# D
, Q( _8 z6 q: q- B! d# `8 k! Qask self [do-trust]
3 u' z% Z7 m9 H' H/ r;;
先求ij的信任度
- |+ D/ L! V2 ?1 B% C$ V' R, J  I) O, p
if ([trust-ok] of self)1 {" z9 y! c; ^9 V3 f5 T- z5 ?. M( O0 _
;;
根据ij的信任度来决定是否与j进行交易[( m5 H8 A/ Z+ f6 A6 a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' \/ \8 m, |7 u. `/ h- D
. i3 N, F( U3 u8 A6 e[

2 I( y4 F' G! L3 |) e3 ?+ M. y  |7 d/ m7 g& Z
do-trade
1 S2 c, b. d1 X* B) D8 D
8 j. R, n" D+ P1 g% @# G% s" B
update-credibility-ijl

5 f  v$ {9 M$ v4 _; ~7 ~$ r4 |& h: I$ a5 N" F) _5 c
update-credibility-list
2 d; c8 j6 u  P8 z# m5 a" {' q

- T2 h4 A) W# t- X6 o4 T5 I) L2 A* \# @' O0 ?8 l$ k" }- `1 W
update-global-reputation-list

7 Y: p- _; `+ A6 b. l1 v' ?4 O* W7 _  d5 w' y
poll-class

- c/ K" _' w2 ~: q) [
0 v3 B! |( Z9 A$ `/ Mget-color
  D- h! i! V+ m3 B! x( V

6 m. i# o% M* j2 b. Y! |]]
0 u7 r+ T2 m) Z2 r5 j; v" j# X# _4 t: w' J: Z/ J( ]  D
;;
如果所得的信任度满足条件,则进行交易& s9 o8 j9 A9 g0 n& H" T1 h

8 N1 \  k% I: v, @2 z[

& M3 [/ m, ~! v0 z& u: S  l6 F( p, a
rt random 360

( A: h/ V+ N; C2 A5 h% c$ v! f: R& e! V+ w1 j# T
fd 1
  e" p2 K! Q! v, @
! l* |$ s- Z' |# P
]

2 v) r& [3 j# |' S$ a& Y0 M* K1 R% m; ^* m! z% L! M
end

7 I. Z5 T0 e8 D5 a7 E0 f# }/ d* l+ ^$ C: q" V& ^
to do-trust
6 k; i3 w/ ^: ]! x+ oset trust-ok False9 R9 \. y6 E4 Z, t# p2 V8 ?$ S

7 Q8 i+ q7 I) e/ F9 Q$ D. {& l

8 b# Q3 W, N0 v) vlet max-trade-times 0
- E+ f4 }+ y$ q! rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 s/ e/ v! y6 \. m
let max-trade-money 0
7 o) t& x- u. ~( t) @7 m( ~, cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 D. v8 h8 w& W, n) N, B& Jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! |* W1 \' D: G; g
/ I5 _0 c$ T5 f: j0 |+ N% ^

/ |( X& N- x3 o3 Uget-global-proportion2 `$ ^/ g. n" R+ c9 z2 p
let trust-value
. C1 a( ]" z$ P% ~3 B8 ^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)
$ N2 y3 ^/ s* B9 p$ v  f
if(trust-value > trade-trust-value)
4 F' Z7 Y0 }8 Y( E. q[set trust-ok true]4 o, {- Q+ m6 I' h5 h9 X
end7 w# q9 P8 f4 R7 e( r4 V8 T. `
$ i+ y- D9 A4 K" v) S' K0 R0 c
to get-global-proportion- A5 ?" m  I9 w1 a; x5 U9 t* W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" I. W8 Y4 R& m
[set global-proportion 0]- ?; u% t9 w; n6 m7 p
[let i 0
6 }/ r7 ?0 S3 p  y* ^# V( K; zlet sum-money 0& j5 s1 J2 x, r" J2 f
while[ i < people]
/ q+ M# h6 Q1 `9 ~5 n[( J3 U7 N- G2 }% J
if( length (item i3 B% u8 ~, l1 x6 A& \$ ~6 p
[trade-record-all] of customer) > 3 )
) m  m% l4 `: s- j
[
3 m1 c# ^6 {* y$ A3 ?' yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ B* T* n. E% p6 a# e2 X; m]- k$ _8 W# j3 f6 k; B
]2 b) q* U" d+ m5 S/ p$ E
let j 07 C" s" g* {  k2 P8 @
let note 0  _! w. l3 e7 `' k! e( `7 A+ L. [
while[ j < people]
1 |5 y, |+ J* Q3 O# E/ B. r[) G9 U  ?: K4 d3 {7 Y; q
if( length (item i; e' ]$ T; k" l  E& I* n9 o7 R
[trade-record-all] of customer) > 3 )

2 ]7 q* S, Y7 S' d. @# @[
/ o, S2 Y0 y! V/ A8 C/ zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- l7 P0 G6 [- y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- i- U# t* h1 Z, r# s: D4 d9 e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 A8 i: K2 k/ J& Z3 h( y, S1 Z$ G]
4 ~, V+ W8 {- L]+ i9 {, T7 \& a; ~
set global-proportion note1 w) O1 A+ S- b* ^) Y! ~
]) \4 q" p1 S0 M: d
end- @& Z) z) ~2 k5 F

: k5 e/ r% i0 r2 D3 Pto do-trade
; n3 \3 W  s  k* T# O& a: r5 q;;
这个过程实际上是给双方作出评价的过程, m; d% H' u& K5 }/ J# a% [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; ?. g4 Q, g: |; }& ]. H. ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 q2 n0 \6 S* v4 Y5 s0 Z- p9 F
set trade-record-current lput(timer) trade-record-current2 Y0 |) _: {# Q3 c7 l
;;
评价时间, _4 b7 M- R; U8 p* {0 h
ask myself [1 }" K- Z5 ]+ |+ N% ^/ w, @( ]
update-local-reputation
; W2 Y! e5 o* cset trade-record-current lput([local-reputation] of myself) trade-record-current+ N  j! Y& Q, ]8 D( S7 Z5 H( z, ]
]5 L- l# p! _1 y" [  u( e& C. E9 O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% ^) `% I& y- t5 f8 r1 A
;;
将此次交易的记录加入到trade-record-one9 h4 e) V3 \% |& K4 _* {7 O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ S( @( I  q4 J' J  Elet note (item 2 trade-record-current )
' j% ?$ K2 j6 ?2 q! y5 K. \set trade-record-current
* t& F1 S4 z) t(replace-item 2 trade-record-current (item 3 trade-record-current))
: R# p" {' T6 C/ r, }# J3 ?' \
set trade-record-current$ o4 ~1 ^( }" G
(replace-item 3 trade-record-current note)
7 h0 E7 o' D# f- C( T
6 {+ W# }3 u- e
2 x$ @' ~* F% S  R3 a
ask customer [9 j0 d: B2 C- ?0 I, H
update-local-reputation. E! [5 J* J/ M7 @3 B. ]7 X$ s
set trade-record-current
0 Z/ Q! M+ F' w1 T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 ^$ }/ D& F! n6 K6 Z]
. G4 f, q+ z0 z. v9 N/ @
5 B( V5 f5 O8 D7 T

# [& t- d. }, }6 s. Y( I" V, F. i( xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" b4 B, {# G1 b3 K
7 ?' S5 T2 z$ p4 w. c* Y  a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' R3 C- j; Z' ?9 L$ O;;
将此次交易的记录加入到customertrade-record-all! C+ K7 ]& }5 p, z) h# S. c
end
! h8 A" j! u* @8 Y" j
$ p/ z0 m3 T+ b+ ]8 X) ]to update-local-reputation: `' |- m9 L7 o  o
set [trade-record-one-len] of myself length [trade-record-one] of myself. ^0 G( ]: W, W# S8 z, G2 y

3 e8 k& }- i% Z! a0 n9 r* ^; R
  ?1 W  N' R$ w9 \! P! s;;if [trade-record-one-len] of myself > 3

6 m% L) E0 z/ g$ J: f1 Uupdate-neighbor-total( I1 c/ b1 M" `1 x
;;
更新邻居节点的数目,在此进行
( ~5 q0 q% o2 `$ _5 T5 Jlet i 3& U3 z4 a6 w3 q# X
let sum-time 0
7 Y$ p2 h1 k$ l  t0 L; v  b6 Nwhile[i < [trade-record-one-len] of myself]. Z. B( r" B& Y7 b" a8 a% u/ Q
[
9 _8 I! Q* e1 b  F% d( f1 Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& L# s, J; m4 s' x; b  G% j6 a4 O4 S
set i
5 {+ P( H3 _6 V2 P( i + 1)
: R1 W/ E5 Y! N. s2 V6 C
]
0 n4 v3 H* _7 a; slet j 3; a5 i8 k- z% \) N# Z4 v! j0 z
let sum-money 0
# G" u/ _! j& n  i7 p' Z4 Hwhile[j < [trade-record-one-len] of myself]6 N; l, |7 k! |9 m+ [3 ^: P: X+ w
[
# f) D3 l: B0 xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* z# P9 L2 d7 B% |9 c* T' N
set j
) L% C: E+ M* _+ Q( j + 1)
  z0 @9 L! F# F' d, `7 A$ I
]
# @5 T% P2 l/ B+ L( |2 i  s5 |let k 3# M8 Z9 Y" G  ^; V
let power 0: @0 E6 o4 o' g
let local 0
8 z4 @# o9 X) Fwhile [k <[trade-record-one-len] of myself]' ?& j( v7 y2 e5 L( ]
[6 [% |* h. v/ `  p" n' G
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) 3 k. X9 u  k4 K4 b+ p- ?( q8 B6 L
set k (k + 1)
  G& o6 F% L/ u  m]
2 y6 [' M8 O- s1 [. Oset [local-reputation] of myself (local)
8 E$ V. E2 Q# C7 j  Qend/ {) x4 ?& }/ I/ L. G. e8 z0 \

' @  ~& i7 p% M4 Q- Y3 P* P! P, pto update-neighbor-total) C) E) |& R7 [- k- @
+ [5 `8 T: `" X1 k8 `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 {- v  Q- y- y# y, W! I, H
- j( k7 a8 I# g5 P1 Y. Q

+ Y6 }) ]( J! Nend9 g& r5 b9 T6 M3 y$ z, g

; o* y3 z; S( k/ T9 Y: I% ato update-credibility-ijl 8 ^' p8 `1 z9 e( ~& e

# q4 a. q$ z4 ];;
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。4 J* t1 o  O" o2 q
let l 0
' c& L- x. d- fwhile[ l < people ]
2 B6 p. F0 H8 d9 F) A" v' Q! s/ o;;
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
/ ]# _" K4 Z/ @6 L9 X) Y; Z[
5 k0 M" D) Z  v7 tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* o& u. {3 A0 u; B- Bif (trade-record-one-j-l-len > 3)5 R/ e2 w; p& u% y5 I+ [' ]4 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-one
$ H2 N# i7 i9 n+ Qlet i 3
* Y. g* b* @/ N. g1 x* d. blet sum-time 0
/ b$ N! x: c! N8 @" b  O8 h* Cwhile[i < trade-record-one-len]
, U4 k- }, \$ L+ G; z+ s( u0 M& h[
9 S0 F' F/ a' `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 O* X0 v& J7 i0 Q+ j% M  {
set i5 R) D# ^, d* v8 @
( i + 1)

* X( C% S9 p# n. s1 h# d]
6 Z6 g' N5 P5 K" t* mlet credibility-i-j-l 0! n) z) {1 @8 G& C4 \% a& Z0 j4 ?7 C
;;i
评价(jjl的评价)' S3 c9 l) ^; i/ g3 R# `0 {+ Z
let j 38 d  S, h; }* b# U! b/ U
let k 4
. p2 D0 _( K) Nwhile[j < trade-record-one-len]
. Y1 G: w/ B( |, p$ F- _& H[
8 w$ k3 y  A# Y  ewhile [((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# g; V! [# C; Q8 T5 }
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)
6 L& L# ~9 }' r* wset j
  p4 v& t7 c* R: S( j + 1)
/ W# a, n1 _8 O. L5 @' n/ Y: K
]
' C8 \8 j9 ~" Yset [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 ))
# L8 c# T/ v% o  w7 P0 B# ~. x& a+ }3 F' X1 j

- R  o: A/ A* |2 ?, v1 L5 Zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ A; j& X# r/ I
;;
及时更新il的评价质量的评价
% h$ G4 R1 m8 i: r; rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) Q6 }  Q# i( H. H5 Nset l (l + 1)
5 x' l8 S( F; y$ S]
0 T( ?# Y" \2 j! K! Wend
, }) ]0 m( @& t; z+ v/ Q9 X4 i. B6 i. M% b
to update-credibility-list% }0 _1 a8 ~( r6 T
let i 0
8 J7 ^/ M% u: g' h" _8 i6 l- `while[i < people]
: h0 l9 [6 m: q[
) y2 }9 I. s5 f& c6 `8 Jlet j 0) b8 Q: g" P9 V
let note 0- K  o: Q* q* V8 E, D4 \8 X& U
let k 0
6 o. m8 E1 K4 k$ L( a;;
计作出过评价的邻居节点的数目3 Q) D2 D4 R( O: [0 i
while[j < people]
% {; r$ r  F1 ?( Z0 x, Z[
) J1 u- n' K) b! S$ Aif (item j( [credibility] of turtle (i + 1)) != -1)0 y% _+ x& [; b1 _% _
;;
判断是否给本turtle的评价质量做出过评价的节点
" a) E0 D( I' A3 N$ G0 j9 o0 i$ l  h! H[set note (note + item j ([credibility]of turtle (i + 1)))
* p4 s9 O* I! g- e/ Q7 I;;*(exp (-(people - 2)))/(people - 2))]

1 y! L% S# o' V- g: Y  Dset k (k + 1)
% I0 ?* R. h0 i3 {9 G]3 j  x2 u' }3 a* X! l4 d7 G
set j (j + 1)
1 s+ ]" z9 S; s5 E]2 m' l- e, t8 R% s7 U6 F6 A
set note (note *(exp (- (1 / k)))/ k)
2 k. h% [( w6 P# Hset credibility-list (replace-item i credibility-list note)9 [: {( B( U* k8 Y6 P
set i (i + 1)
1 G! Z* s3 @+ b  U]& w1 f! N! `- H3 k6 L. n9 C
end
4 h3 |  C# k# T, K) Y) H8 R9 e4 n
6 K) R6 V' a# z# n4 z. Y) fto update-global-reputation-list5 N3 q; D8 D+ ]' ?# W" `2 s
let j 0
# ?) k0 m. X8 C% xwhile[j < people]
; {. q+ d9 W. e6 P8 T2 R! a! L[
' D  b( T2 [6 R' F% F; Qlet new 03 [  \7 ?" S# `7 |7 z5 B
;;
暂存新的一个全局声誉
: h! E' j, g  r; ~3 n/ a( X' p, jlet i 0
$ B0 z6 T, |: M' t: V- Q0 M$ D) Ylet sum-money 0
6 F% h' y3 a7 |" h: W% M/ B' ?let credibility-money 0
$ m0 X( D& X* O0 u' i7 [* nwhile [i < people]! u+ P) R) [4 @- g5 P! X1 k
[
/ J! t3 s. \2 `5 t: G. O6 Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); u- M9 h  U3 O' d! T. Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 _, B! f! U& x6 j( w1 [: Y5 ~, ]* G
set i (i + 1)
6 z1 S( }5 G( D0 E8 k# P]" Q+ B1 R" U! m  R8 M, C
let k 0' a9 E, X9 j& r& T' B* L
let new1 02 p9 ^$ v, d0 a9 O
while [k < people]
8 w- v2 q, u6 X4 }/ A% R[
+ Q5 S4 i( b( d4 n' u& T+ x+ _set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)2 p! |3 w+ w  G" ]$ {
set k (k + 1)
) w2 R7 s5 u. q" A: g0 W]
. ^) {0 Y9 z# s, Eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 K, K" p% @/ Z; m
set global-reputation-list (replace-item j global-reputation-list new)5 z9 j( _4 y: K. ~; O+ p
set j (j + 1)
* a+ c4 }. N0 g/ [0 R+ b]
' Z3 p$ T* u4 Z4 V( ]* Kend
3 I9 t# ~* j: f1 J" g. L1 J. w  l" ]+ \$ a
# z2 q; i1 z% [+ Q' a) m
) @' `" D; t8 z6 l
to get-color
( x' c$ \3 r; |1 ^% f- t( i' ?7 f9 A5 n' z( a4 G  }$ r6 }
set color blue
7 u. E0 M4 `' R' N
end9 E+ |1 N- L: _1 d  x5 Z3 C

) f( Q, V0 F! y+ dto poll-class
. w6 o. Z' U3 Q& yend4 Z0 l/ u1 g' L' w2 r4 a
2 w/ Z( B7 Z6 l2 O5 U  u3 x
to setup-plot1
3 m* Z' G1 \" p# o& ~' ^9 w
5 V+ y+ x, v6 I* Hset-current-plot "Trends-of-Local-reputation"

, ]2 q: x, T: y  G! T
5 T7 T5 w( z$ p8 `: j" V  {set-plot-x-range 0 xmax

' H8 s) m( d, B  y8 a7 v" L/ z
+ Z8 S. ]& z  v3 S$ P0 J( N/ gset-plot-y-range 0.0 ymax
- H; f! D- \# U7 B
end* I+ g) A/ y9 _/ s" Q) p) f
' Y& D" ^+ u& ^! a; B# g
to setup-plot2
5 @% r9 f) V# M, `- W9 B/ P, i6 a% F! d2 ~+ g) `, U8 D, f1 a
set-current-plot "Trends-of-global-reputation"

7 g; g$ O' S4 P6 `# |: n" h$ D
7 c" O% Y; L/ y. Q& Eset-plot-x-range 0 xmax

& c' d+ N+ X# G" S3 d/ X) e* ^: K% h2 I4 I. v1 ]% d+ [1 v
set-plot-y-range 0.0 ymax

6 \+ y$ T6 X  Vend
4 H! f" L8 B! B( J* U) A1 _& E3 F0 g( B' T! k  c: W
to setup-plot3
5 h3 e$ v' y7 S
( [4 E% @( a9 ?6 z4 u' P2 k, A& Hset-current-plot "Trends-of-credibility"
# p4 p4 G$ s/ `; y4 X

$ B" M: z: @# u- h# t" I$ X  _set-plot-x-range 0 xmax

1 l0 O8 W4 [, [' i# J" ?
! O" T9 q5 q) S) l1 m/ G: S  nset-plot-y-range 0.0 ymax

: K2 }' c. n# v, X: t* y: Eend
! ?2 h) ?' H4 G( {+ c8 k* Y1 S1 f  x0 d- r; f7 o/ c0 Q  F) H" i6 f2 w
to do-plots% F2 v& M, ~# H4 z0 M! O, Z
set-current-plot "Trends-of-Local-reputation"! h& P# W2 k/ {6 Z
set-current-plot-pen "Honest service"
  K/ O/ C4 |! h% uend' s% v* m( w1 r' u! @
( n' V2 p8 Z3 e
[ 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 ?- w$ U/ F( \  F
$ o$ c8 S# v( v
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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