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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:
+ n+ ^5 w, k: x/ _" Q, ato do-business ) S* q2 O4 Z6 X. U, l& N
rt random 360# @% r2 Q1 u, y: m6 F2 ]2 N5 _; `' x
fd 12 g% k( i4 G$ E. J
ifelse(other turtles-here != nobody)[' c9 X% ^8 g! _" c7 Q, u7 ?* e
   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.
, r) s. f5 f" H% W) x8 E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , C8 e" @% l- Q1 Q& h
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* ^* j1 g: |$ o- k/ Q; R   set [trade-record-one-len] of self length [trade-record-one] of self) X$ c* j/ q: n3 G1 P$ o8 v8 w
   set trade-record-current( list (timer) (random money-upper-limit))2 D0 R) }( e+ c- G7 v6 o$ N  I

' c* Y* }+ x+ b4 Q2 e  Y问题的提示如下:, M% K1 Y, _  U; m3 g

8 G  e& ^5 g; Oerror while turtle 50 running OF in procedure DO-BUSINESS' F9 L/ L% t2 q$ L6 G1 J7 e
  called by procedure GO
1 n0 S( w, t( g* qOF expected input to be a turtle agentset or turtle but got NOBODY instead.8 K' [2 k" q4 L" k$ D5 ?0 [+ P  l
(halted running of go)
3 s8 i* D0 B) j8 W2 n8 M7 x: w1 |
2 k% u5 J1 |! @4 ~9 _% `  a+ v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~~
" y) Q5 R( y( e) ?; @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' h/ B) `& ~# h- q( I
globals[' V- @2 q0 C6 M3 N( e2 y8 B3 k
xmax7 X; \0 G7 h" @. e0 d4 y
ymax
9 c) ]0 F* r* ]6 @7 vglobal-reputation-list7 p! l7 `# c7 a$ E' s
* w& m4 j1 z. n7 \5 q4 d
;;
每一个turtle的全局声誉都存在此LIST
% y9 \" q4 w& {: J! n- `credibility-list
. N0 h- i5 K8 `4 z$ W;;
每一个turtle的评价可信度
: w$ S. Y: g3 V. N: ~9 ohonest-service
, p, h3 G* L$ L+ N& ~" y4 i' Munhonest-service# \6 x5 j9 E1 q/ A6 c2 t+ C
oscillation. E* w7 u/ Y. d2 U- [4 J
rand-dynamic
* {4 [. P( S. X0 a]/ `/ B+ V  \: l% Q6 F
9 H2 ~, V# o  m- q# d5 V" e3 a
turtles-own[
- k: m# Z# a9 P, T) j1 c  H; Dtrade-record-all5 l7 y* X7 B( \' m7 m$ j
;;a list of lists,
trade-record-one组成3 n$ I( I! g5 Q, U& ~7 K  J( A
trade-record-one2 T0 H3 q: ^0 k4 p, R( 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; Z6 L0 N. R3 x# g3 b# v9 y
3 v; {. ?7 e  N3 ?7 {5 k/ K& {
;;[
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]]- K5 j5 w4 S, U
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]
. E" f' _0 h; g, n' ^. kcredibility-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
* W* |, y- d" T9 _neighbor-total
# t$ _/ _( S* m4 m;;
记录该turtle的邻居节点的数目7 Q3 }/ z* g1 y9 y2 W$ I" m
trade-time( ~) G# T' v1 _
;;
当前发生交易的turtle的交易时间
) E4 x/ B0 g) W! \0 Pappraise-give( s( I% Z8 S5 w% \' d+ Z2 U. A' W
;;
当前发生交易时给出的评价
+ l  D/ L7 Y4 z9 Y0 v: bappraise-receive) I% O7 b( {9 ?) V1 g
;;
当前发生交易时收到的评价0 J- W# y7 X. g
appraise-time
) v- ]8 v1 _" n3 ?' v5 E9 k) e- s4 y;;
当前发生交易时的评价时间
' k. j. K% y; y6 S; s/ j0 plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* G& ~. X# K1 rtrade-times-total9 X" l; S( k3 u9 X
;;
与当前turtle的交易总次数
& R2 k8 Z: `( C1 G0 x9 h9 Rtrade-money-total0 p7 e) J0 h1 p/ P0 s
;;
与当前turtle的交易总金额! W! ]; ]# t9 k$ x; H
local-reputation; M* p( \* }* ?, W
global-reputation& H; z) K$ X5 }* ^
credibility
  t' g* l4 \( W: r2 U;;
评价可信度,每次交易后都需要更新
% ~9 K+ x; L( Z( V9 j2 R/ xcredibility-all) b, \3 p, D- s# ]
;;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
0 T2 D$ `$ T  {4 |3 j/ J
1 [; O* N3 h8 s3 {2 a;;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 \& {; ~+ d% H) Lcredibility-one) q/ C  n4 O9 C0 U0 `& H
;;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, m4 e2 |0 _; L, S7 a
global-proportion
. f6 l. \% ^4 t; R6 Ncustomer: d* V2 H1 [( a  s' M
customer-no
! q) ?" _9 L9 l0 J& E2 ]trust-ok! ^# [2 T3 l( C1 b( l, {: N  n% W
trade-record-one-len;;trade-record-one的长度* \6 z" O1 P+ w% ]5 F9 X( |7 l
]. A7 j  M7 e( Z# a" y% M
- b. \- h, A7 m# t
;;setup procedure
5 G% p8 W5 g0 {  m$ e& ?% N( _/ S% G: L( E& |, C. a
to setup6 M5 D$ I& L9 e& u" i% n% {

5 r- a: P* X) h1 G, |- E* Tca
# f" Y' W, R" f% d& Y7 ?
4 z( n% ]5 q& X) H
initialize-settings

% ^/ ?9 R9 w! i2 o2 G3 z: p
3 P9 Q1 A1 Q7 s- u3 x* @5 jcrt people [setup-turtles]

! B; _" E9 w' q) L5 d7 v6 A" |5 e. O) t- D7 c2 {5 c! O
reset-timer
/ h* u" d* N# n9 i7 l0 d

% Y6 f' {( _! E+ fpoll-class
8 {# J8 g$ x8 l* k+ w# B

8 ]0 E6 v/ N; Z# Q+ @) H2 @5 Wsetup-plots
7 z$ Y5 {. F& z

2 J, }3 w/ \4 vdo-plots

; k, s1 B; r' D8 n( mend
# F! H# p" q; b! H* t
. H% q# `0 q! Xto initialize-settings
3 E, u0 w4 V# h* L' h/ k0 q& F1 j, X8 `% d3 }3 T
set global-reputation-list []
6 b# i9 _& ?' C- _3 J& o
8 d* W# a# c4 I- _$ `! e
set credibility-list n-values people [0.5]
3 ^5 o, B) ~; {) g3 D' u

8 e- I; X, `; o+ ^/ ^* X) hset honest-service 0

8 a8 t' @. H, y# L
6 I  j8 P7 ]" z8 }$ ^/ O  d1 j  Hset unhonest-service 0

" Q2 x. \/ j- j1 O2 ~, m  J( J0 `: t: ]
set oscillation 0
" e7 T; u7 j' R) l: E4 k: q- F+ _
/ O( M& e+ v9 T% ]1 z  Z8 O' r  l, L
set rand-dynamic 0
( ]' Q# `7 O/ o( }
end
( x6 b1 J4 f# U5 ?" D
! Y4 i. E, p! ^+ Fto setup-turtles
% r+ N/ |% W0 s% nset shape "person", E: Z9 b' t* B, m
setxy random-xcor random-ycor& Z: F9 @" X0 x' s. I# Z
set trade-record-one []
0 j! ^# ^3 A" \4 d
. A% a: x( U' `7 l+ _- g) `
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ I2 P+ ], d7 s1 I- G9 V

& D! I2 t4 Y9 U1 W$ S& J4 r) oset trade-record-current [], {# Y* p% ?0 H# H8 I$ n' M0 z
set credibility-receive []
, r; [& R9 l" K, pset local-reputation 0.5
7 M8 c5 s! u2 i3 e5 Jset neighbor-total 05 V# {. y5 g. ?
set trade-times-total 0
2 U; J  i! e' o. ]2 c; h' bset trade-money-total 0
. b9 w3 l/ i! V% c, H" ]) K4 w0 g' gset customer nobody2 S& i& H7 o/ U7 Z1 y
set credibility-all n-values people [creat-credibility]" Y! l( i! s0 R) Z  R
set credibility n-values people [-1]  Z- r0 t& X) Y( [
get-color
! w8 p  p6 [# V7 N' T5 r3 [( h

7 D! c" D7 q0 @9 f$ \# H% ~end7 S0 E; q' g  R8 n5 e6 J% i" f

& V/ }) u4 b9 Z# C2 n# s2 Hto-report creat-credibility
8 i5 j* q' t' W2 J% W) k+ }4 g9 Rreport n-values people [0.5]
4 j7 k" U6 w! Nend0 X' ~0 {: u/ p% o4 z6 m
7 L$ N6 l  `' Z) y: O, Z
to setup-plots
9 S6 v. {, u: B7 m- G9 r
' Z! j. \5 L* D0 I( x) d, @, A4 Mset xmax 30
" K* b  O0 |* z  P/ q! V
) A% Q( E. h2 C
set ymax 1.0

5 n/ d: K( w6 i. ]  o5 ?$ X0 r; j7 P/ _4 F% Q" r
clear-all-plots

. `" _) x' O5 p5 I. b4 j- d- T5 G7 n% V
setup-plot1

* L5 Y0 j: U# r# {3 c
9 Q( y% K# D# t% e8 W# osetup-plot2

% J: Z/ E8 _8 U' L$ m$ {  p( Z6 U  K& \0 k4 G
setup-plot3
( z% S' J: T' h) ^/ U
end
8 [. I' u: |* Y% \+ k
- p. K, Y5 c4 p: ]" x% u;;run time procedures
: f9 O; E- @9 U$ X" O) U) X
* J6 @" l+ F  ]8 e( lto go
: l+ T! b$ V0 i+ @- B  K9 D2 o% m- j  ^( y* q
ask turtles [do-business]

# ]( t  {$ Q  Qend: l, m, f. R6 T) F5 c: W6 F

% R- A3 K& H. ?+ B  q, y7 `, z+ X2 hto do-business
; L# z5 P; h2 A

2 ~2 ]( J' L" I! r7 i9 [, {! q: K; m) R  F1 D5 t7 |
rt random 360
7 ]  a/ D- l+ P0 O5 L  Z
2 a  J' \$ _  w$ D
fd 1

" i# U3 c. Y* v1 D% b9 m0 d
. W4 t; ^' U& D* ?& v: Gifelse(other turtles-here != nobody)[
) J5 K: J6 C1 t
+ l9 d. V/ y# A; i: X1 W
set customer one-of other turtles-here
" P3 Y; h: z. Z/ d

7 W1 @# p6 a1 X( R6 u  j, ?' P, _% _- v;; set [customer] of customer myself

( [: `, g8 n7 v; C6 F, u4 i! _1 X4 U! h) W, g+ s+ d) Z& d
set [trade-record-one] of self item (([who] of customer) - 1)" h" ?# T8 b+ D! Y
[trade-record-all]of self0 Y0 ?, h# W: z- v6 y: }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  x6 R8 l0 q2 ^# o! T

: G" f' O$ l3 q2 j3 c; y$ |set [trade-record-one] of customer item (([who] of self) - 1)9 o" W6 r8 A, L) T4 [& q
[trade-record-all]of customer

7 n& j, w! t# G% |) Q1 J$ J4 q5 G; Q8 n' j9 `
set [trade-record-one-len] of self length [trade-record-one] of self
/ [- _6 q$ `4 l6 W- V6 b1 l, J* n* T

- X4 c: L" _) p3 \set trade-record-current( list (timer) (random money-upper-limit))

& K' t3 n* @1 \) J) v" J: Y! n, P! z! l- l
ask self [do-trust]+ p( P# c- V- Y/ W* D' K" d: F
;;
先求ij的信任度
) W# {  W, [7 B5 P9 H, q) {( v% [3 ]- `1 [2 L) a! ]1 C6 B
if ([trust-ok] of self)$ B/ ~0 e# U4 I. h
;;
根据ij的信任度来决定是否与j进行交易[9 p1 A- l( J0 A4 F8 l3 W; r: s* [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 ^7 Z' L' ]& `) b; A  n
. i$ x. z5 u8 ^* y! t( T[

/ t7 a) I7 q! O( ?! ]4 b$ u/ X5 M# i0 |' K0 V( g/ y7 {6 q: q
do-trade
6 Y  K* V4 |' p4 Q9 V3 S* y$ D

' z1 F4 s; J6 E) t/ j, }update-credibility-ijl

6 ^; R9 `/ A8 n! l+ S- j( _
6 ~+ X- M5 u- L* T4 i3 bupdate-credibility-list2 m1 x6 @% p3 ?

6 j- c7 V* B& C$ }) x$ r0 _
0 c1 @- ?5 v- d+ Q0 F. r" V6 Nupdate-global-reputation-list

9 i4 K3 n5 t; d8 x1 i/ f% P5 w2 z1 v7 |5 }) ?) h5 x' g' V
poll-class
0 r! v9 Z& r! P8 c( T1 \6 F6 |

+ G6 ^- h. G& Q( Kget-color

, F+ d5 @* T. ^0 w; X, O/ b+ T3 p5 r8 G5 i( z
]]
5 L! R% U! K8 B; c3 J; S# l
. j/ o/ R) Z  [1 b  ^;;
如果所得的信任度满足条件,则进行交易) i/ U2 w, V0 L' W9 d7 p

- d6 [) y0 n  s8 v, g% {2 X[
3 ~6 C- G3 X( W0 h/ K8 Z7 ?

, F3 p: Z* b) ~8 }rt random 360
5 k# }  T2 \9 T/ p9 U. e4 e! S

  G' a2 ?" [2 }fd 1
  Y' J- T3 e0 v* L: I/ u

& l( n0 e6 `1 D# ~]
( o; x0 s& w/ r8 M& T' S
; c, {: r' x7 o1 y9 U- P, O5 d
end
- L! }/ r6 W* H8 x
. K! ^8 q* }' w! s0 J
to do-trust . h0 Z# S3 e7 y5 c. G  d" S
set trust-ok False
& `8 K# ]( k. y2 G4 l  S( b- J2 C& o. V- a: c+ D! e: ?1 G
: {. c. l/ V6 y* C
let max-trade-times 0: b& Z, k- `2 c' F
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], y$ X% X. k0 z' x  D; u0 y
let max-trade-money 0
! X% e4 f+ r8 l( fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 w/ M3 L! Q" _; ?
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 m! d3 ^( i5 n
6 m3 y$ Q& u0 N) b$ o7 q3 m: c

$ B1 o& z) r0 w, z8 Iget-global-proportion
. H- j& a' q6 X; }: V, [let trust-value+ P/ ~  Q) v+ X& ?5 [& j3 }7 t
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)
% q( p5 h0 G8 d0 X8 ]3 m
if(trust-value > trade-trust-value)
& W7 K. A% @8 ~. o1 r  N[set trust-ok true]
' w5 [  e/ z0 i7 vend5 n2 S  o. n- K" E& P# y0 E
* n, p/ e7 T" B: U8 P0 a  N
to get-global-proportion$ I$ \" E) Q# |7 k! j) @* d3 z, J
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 p* a9 Y$ H+ L+ H# a' [$ J: M
[set global-proportion 0]
; R; U, _; W' }8 `; t[let i 0
8 m5 ?" J0 o0 k& i! E9 plet sum-money 0$ n$ i: w8 g" Y& H& `
while[ i < people]& S* r& K8 g/ i5 m6 c" M8 L4 Q
[1 }% k! H7 _; [$ W7 \
if( length (item i
+ Y& \; c& e, b4 O, V! A[trade-record-all] of customer) > 3 )

9 L8 e( w- E) I[
$ |' a, x5 x1 F7 R, ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 A: q! b4 O$ C: a]
8 x* I  e$ [$ m& d( x]
2 Z# ~& J9 n4 r% b( Clet j 0
" g3 ^1 }' ]7 Ilet note 00 {- e  i+ V5 n$ l
while[ j < people]. ~. T% e* r5 X7 j" Z$ K5 K* {$ }
[& H* X8 X) R2 x0 Y
if( length (item i
5 ?; m' \/ R- B2 B[trade-record-all] of customer) > 3 )

* [; X! y( G- ^$ s; \; \: n[# w7 o# ~# V4 |" k2 _9 G) d
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% b; N$ @  r5 m. y8 T* u+ S) h9 Q6 [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], {; K7 p$ }- ~" O$ ^$ i, c
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; Z3 r& F- y2 e: x! O! W# t4 R
]
" b# i2 n. ~8 Y/ K" h4 i( x]  ]: u* o8 C- F& K4 ~
set global-proportion note
5 {* n' l$ g4 ^# Y9 {5 s+ k9 p]
% Q) {* y$ S1 V- i$ k3 b" j& Cend6 f5 e6 Y" d2 Z$ p; j8 h

6 a5 F% o: r) E) U1 \% p5 ~0 i! F7 dto do-trade
1 B. K& v+ Z, t$ m3 E/ {;;
这个过程实际上是给双方作出评价的过程
( R# |; `6 p' w9 G$ s2 x0 E8 Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! I" m# h/ f2 n7 v/ K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; i$ c+ O9 W  I) _" j+ E3 G
set trade-record-current lput(timer) trade-record-current
: m+ K" s# M: Z$ w' C;;
评价时间# s9 ]9 j9 |  Y6 `+ E
ask myself [; W" @" r& T- I! G5 K! d( ~; I+ @
update-local-reputation
/ v& L% ^, G8 K* iset trade-record-current lput([local-reputation] of myself) trade-record-current& ?' Z: m; e4 \# B  q
]6 e4 P7 g- B5 k9 T' T% s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 A. Y( ]) y* S7 C( a2 E' Y5 t
;;
将此次交易的记录加入到trade-record-one# F% J' Q' [6 H, a5 R3 r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 \7 v! K8 R; L
let note (item 2 trade-record-current )8 o6 L* q2 q6 `! j# I
set trade-record-current
8 n: Q5 E8 j( R0 h(replace-item 2 trade-record-current (item 3 trade-record-current))

3 h0 M( Q$ F( k- n4 {+ yset trade-record-current) [- n4 G' S8 Z- v  ]
(replace-item 3 trade-record-current note)
: r- X9 r0 q  o/ j) U1 Q8 B# I0 L$ }3 N( S/ {

0 e6 a1 o7 \, cask customer [, u# a9 I1 r2 v: P6 Y
update-local-reputation& M0 E5 h6 S  s' o/ k6 o$ G( U7 D
set trade-record-current
+ \/ E) V! T& r4 `3 S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 w  |& \+ q  D( z]& X" l" S! G5 J& X% V/ {! O( Z
: }. t+ P% }9 S' V9 z7 ~1 z. P

/ T* I( R) x) P. }set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% W% \7 M% n  c4 }" S; w+ e- o
9 i$ t- _* L3 T8 L2 s3 }1 k
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! @+ m  b$ [7 }$ k! O& f# V;;
将此次交易的记录加入到customertrade-record-all
5 m, s1 v$ b3 {! Q0 Oend" [, v/ S+ T' L( T) o# E6 Z

( w1 c6 V+ z3 ~9 J* X4 w" Rto update-local-reputation& p" ^6 x2 H4 {
set [trade-record-one-len] of myself length [trade-record-one] of myself: n( K) \/ y3 j3 V0 P
9 B& _, I) a- S1 P! f3 X6 P! Y

1 n6 B( }9 C% Z5 Y8 i& A7 l;;if [trade-record-one-len] of myself > 3

: ^6 _/ c: h1 F( z7 Zupdate-neighbor-total
5 v% ~8 Z' G& `9 U1 o;;
更新邻居节点的数目,在此进行
0 E+ O2 y9 w% O# p& E5 Ilet i 38 g9 N2 A1 S6 h# p1 h: v
let sum-time 0+ j$ @+ P$ h& T, S. ?# S
while[i < [trade-record-one-len] of myself]# a& {- j# I  `2 C/ @0 E
[4 h  V# S- g* p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 Z& V" K& t( v8 F: Z0 T3 `5 H1 p
set i5 u) W/ B6 D1 `& Q! C: V
( i + 1)
4 n" ^  R9 }! A# i) B6 Y( _
]
9 G& d& v" K  ]+ \2 q. O* H8 Vlet j 3
! f+ |& y5 z' p7 @+ T- dlet sum-money 0, ]! x* R5 f2 [" G2 |* ^* U
while[j < [trade-record-one-len] of myself]
' g6 _* b; ^3 ~2 u0 D* E/ P$ ~[
! X0 |& O+ ~% Z# p* nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 b' d9 v# J2 y" r+ h# B
set j
: ]1 |; h* ~( Y( j + 1)

; {4 p/ w. [5 A$ q. j+ E]6 W( c4 ^+ f* O( g
let k 31 f7 z- W2 x: ]1 e: F
let power 0
- G' i/ m' j7 F7 S* Glet local 0
( J2 p+ G+ c' o, _while [k <[trade-record-one-len] of myself]
! r5 F1 J: t1 \$ Z# w  s: V$ M[. e: h# S" D7 ~$ f( \
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) 6 V6 M4 A9 y$ P& L" U
set k (k + 1)
: B+ N: s4 R7 O/ A]# r' e  o0 Q+ E: O5 S
set [local-reputation] of myself (local)
& f  V/ l; f6 g! S6 u5 cend
; }: N7 Y& A$ |, G! s5 N- g$ j5 I% U+ C/ z3 q  H8 X7 H
to update-neighbor-total
* ?3 }8 g8 Y  F/ ~. t  a
; i0 f$ _8 A) r' Y' l9 zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 T* a  x7 Y' N+ d5 `3 b4 O( P
, K3 s8 U9 k, D4 s$ ]- ]+ w

* x8 o# T1 u$ b6 z( Jend
' @: N) d7 ~/ T* q& \1 k) W2 L) a5 u0 ?+ `# g
to update-credibility-ijl
4 ~. V9 q7 r8 T% p/ |+ Y) e
' Z- H. |: G' t7 D# K2 i% ~;;
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。8 S7 S; |, x; Z2 s/ J! |
let l 0. q& D3 f; p- M: s$ z/ t( j
while[ l < people ]! Q0 P. w  D3 A1 P3 C9 v9 B4 A
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价' A/ t# [, n+ t" E4 ]/ N9 S
[- l) g3 ~& ~$ e* g" x/ W
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- ]8 p! m) @8 q7 C5 e6 Eif (trade-record-one-j-l-len > 3)
3 i) {1 a% J- P# N; i! e, `[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
' i. b1 n8 T/ m# c5 R  S7 J5 V# ^let i 3& z/ ?. _4 b& g2 J- F8 b4 {. B, n, _
let sum-time 01 U( I  m, w' }4 w' S1 v5 d
while[i < trade-record-one-len]7 y! {" R8 ?! i8 j5 h
[
& b& A. K" e" ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! r4 T7 g- c# i& e
set i
6 l3 F. O% V5 G6 ]8 K( i + 1)
* `7 _# i+ H6 U; E0 _2 b0 w. k
]
+ _, w5 q; v) i1 W; n+ J& P0 Llet credibility-i-j-l 0* ]0 w4 }( t9 ?. o! E  f9 ~
;;i
评价(jjl的评价)4 k6 _& X, F7 A5 n
let j 3' p: i) B' t; Z- N
let k 4% `2 q- }* l/ [5 r! ^8 w7 ~& S, f2 `
while[j < trade-record-one-len]
: v" y& \. R: F- F' V. ]- E[
1 [* O2 k: \. ~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+ g% r- J# o! W8 d8 `. p0 d4 ^3 V
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)1 \% @7 M- w# o) g
set j) c; Z# @4 I+ b! G# _" W  l5 f; P
( j + 1)

& B7 m% t% O7 Q: B2 R- Q]
. `& f. I; Y0 p  e& dset [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 ))
" n% q! _0 m/ k6 D4 y; m) m  H# ?6 n: q8 j( B! A, \
  U% m4 \2 b0 o+ U# Y: N
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! f; N/ L- e5 e; e
;;
及时更新il的评价质量的评价0 [9 k7 P& s' D2 w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 J, Y5 D8 a# b# c# t. d  l3 Z
set l (l + 1)6 X3 i- G! G4 E- g& t
]
& X8 f6 z$ l: {# E, u" R. p8 ~( yend. m7 j2 i# @: }: ^
6 b# N1 [: Y+ J  P' N9 x
to update-credibility-list/ b' g& d" W! r3 B  ~+ L
let i 01 d' Q& @& \9 z, G' ]# E& j( c
while[i < people]
# U- u8 C3 _% `, [' Q, G# Q[5 I: ~' A+ k. f  z  l
let j 0
2 U0 N4 x. f9 L; y$ J0 ~' blet note 0
3 g. B4 k& z5 P' k) }- }! H# glet k 0
8 p+ }" G6 b: @: L6 V: X' _;;
计作出过评价的邻居节点的数目
. k- `6 V$ G& A/ o* j0 iwhile[j < people]7 w0 u1 e- E1 A1 \0 }) w
[- y# C1 m1 b4 x1 r0 K
if (item j( [credibility] of turtle (i + 1)) != -1)( d. P6 C- y/ n/ ~5 k  x! M
;;
判断是否给本turtle的评价质量做出过评价的节点
: }% Y# y; k# I/ ][set note (note + item j ([credibility]of turtle (i + 1)))
: }) Y# o* N9 C# k/ v9 n0 A! w* e* J;;*(exp (-(people - 2)))/(people - 2))]
5 ?# v! m8 g! a0 {9 Z
set k (k + 1)+ j2 A9 s% d# f$ B* `6 ^1 z
]
! G, ?( U) l4 t$ b& j! \/ z$ R- }set j (j + 1)' O9 n6 _4 u" }/ ?( w2 ]
]4 W( c3 e# S( n7 J' g$ o3 y5 q# |
set note (note *(exp (- (1 / k)))/ k)% z, T5 _% v! y9 l3 C* Z+ x! R
set credibility-list (replace-item i credibility-list note)
3 H1 P; G) R; F7 mset i (i + 1)
* n# }9 `5 ^% l0 Y]
+ r  E3 X7 [) _/ Tend
% R% x0 q+ p5 J; n+ E: L/ o, `( b2 @
to update-global-reputation-list
/ t; Q7 [" ?( Wlet j 0
  s% F' q% W/ h8 hwhile[j < people]
4 i6 g1 @. G; W) L/ W[
* b7 b) \  {% n; x, p( n' Mlet new 0
2 d0 ]9 ^, x2 r6 z3 };;
暂存新的一个全局声誉
  `! C. u, v+ \, v" Zlet i 0# Z! v& S8 H; P: E
let sum-money 08 O; S6 a1 O6 n' e
let credibility-money 0" p% i' n) y* c/ S7 s4 r
while [i < people]
. u: Z" h7 b( U/ u; l* p' m) N[
. c! ?$ t5 f$ o% ?+ h5 xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 R' G/ a* Z5 E5 wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) h3 t% b5 D, l2 `' \9 |
set i (i + 1)8 Y) b" `# _! V1 C4 g/ H$ g# l
]# W$ [) A& o8 o/ {. ^
let k 01 u; }% D* i% c7 k  ~
let new1 04 l6 Z- r7 s& F# d& x* ^& t3 p* `
while [k < people]
# E) Y+ M, R) Y* w0 a# _[! [- ^3 h. v' l
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). |$ X# c% p' P; O1 c' I
set k (k + 1), |  v% ?# r! [5 n& G' A9 w, y
]
2 W$ e2 A5 O8 E1 J/ j2 w/ D! oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! W! H0 r7 Z+ W& N
set global-reputation-list (replace-item j global-reputation-list new)5 D1 i) B+ C0 ?* q
set j (j + 1)3 f4 |0 P9 u$ P: X, V9 c- n# v* p0 a4 S
]0 T8 j1 M  W3 m0 q; B3 ]/ y" \
end8 Q: n/ h, ]$ O4 s; Z; Z) V. e2 Y# G

+ h2 E& M; J% x( M
/ z& d9 J6 R5 N9 ^" q" [/ e* J* i
to get-color6 B* C2 h  r( t9 s, O  v
1 l0 x4 H# X1 t2 M& y) b6 `6 Y# |4 T3 X
set color blue

" n" }5 u1 ?# I4 @end
7 z0 W0 [5 C8 h$ R* b' W$ y! r  D. N
to poll-class
) w- T% a9 h- j# |/ Rend- P$ |9 u  K- y

6 m6 p4 I9 i5 c/ \, m+ Zto setup-plot1
1 H" R+ @% J# _( @+ q
0 l- ~/ G! T5 p  ?5 X- c# q' E1 Kset-current-plot "Trends-of-Local-reputation"
/ t4 A# Y5 q5 R" L
: p$ ]4 l" r' D' F% `0 L% m
set-plot-x-range 0 xmax

- @0 N8 X+ g) s. m
8 S7 n9 E$ p  g. w* Z; P9 Y4 _set-plot-y-range 0.0 ymax

1 D4 X3 d; x3 P* f+ _0 o" a( Kend
. k- w6 R$ e3 [7 K* B! n8 t. ^3 X% h0 s3 N4 a' I# N
to setup-plot2
7 s+ ]% y  A+ E7 D) P" u, ~% B% {$ M$ ~; B9 \/ `$ v, @; d
set-current-plot "Trends-of-global-reputation"
5 d5 V) r; u, `6 Z; K

% ~( K, H" T& wset-plot-x-range 0 xmax

1 L) ~, s; i* O7 R' H  M- h1 [# Z
/ d- H( M& I. [5 W) T4 \& z( Kset-plot-y-range 0.0 ymax
/ _  M+ f% x5 H( \( y7 ]
end
* |9 F& ^5 T3 e! ~' [3 u# O$ E- P' T) X+ O8 K- ?! L% e7 X0 K
to setup-plot3
+ [# z. v$ y" ~9 ^; P/ N! F* ^3 b* N/ {/ ~: E( D4 `
set-current-plot "Trends-of-credibility"

8 k2 [: i$ g0 b1 g/ t
/ R1 l8 ^3 ]1 fset-plot-x-range 0 xmax

7 t  \1 z/ I- r$ _6 u
2 c' |) R# s$ u2 [2 Rset-plot-y-range 0.0 ymax
0 [* n+ n: q5 V8 Y( f9 \9 C
end
! ~3 e- s9 O+ n" ~+ E+ G
2 z$ B* F, r8 ato do-plots8 S$ V0 D" k" U- T* O! X# g  |
set-current-plot "Trends-of-Local-reputation"/ p/ w, i' l" b1 b- y% E6 _
set-current-plot-pen "Honest service"; v$ n, ]2 j7 [9 M$ k$ H: B7 I- n" h
end2 |& S* l  v/ X7 d1 h
' y8 L* \3 f. j" i+ G3 Y
[ 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.) e) i; B7 k6 b

+ t+ a" r/ ?: ^/ u' m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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