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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:
/ P6 n. @' h* z3 A# F$ b6 [* Sto do-business
8 ~% c; r; r+ v8 E9 q6 I rt random 3600 A& B0 R' ~; L& d
fd 1, E9 c7 @: Z9 ?7 i  {2 H8 |
ifelse(other turtles-here != nobody)[1 ]5 R% W2 a& p
   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.; ~9 u9 ]: A8 |; Y  S6 K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& S7 k6 d9 g6 f& p   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 m0 K; M5 m: y8 [" s
   set [trade-record-one-len] of self length [trade-record-one] of self/ }& r' Y# D8 a1 r  y' v/ B8 q. [
   set trade-record-current( list (timer) (random money-upper-limit))" ]$ X. C( r6 n- Q8 u  T, ]
2 ^( x' K" s3 ^0 z
问题的提示如下:, y: q5 I% u; i0 D  a1 p  T# {

  T0 [8 G) c: D2 eerror while turtle 50 running OF in procedure DO-BUSINESS
, o' V; M8 @8 w  called by procedure GO0 w6 F. K; Y4 E' ~6 M0 e
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& k" r# U$ G- C4 }: M5 s3 s
(halted running of go)9 H! t+ n* {1 ^" d/ [4 ]

/ ?" f7 A8 n. b6 D/ j) S9 u/ h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~~
1 F5 u1 b: u( S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- ^5 J6 a; d. r
globals[
: [2 ]( o3 u; txmax6 q9 q5 N) j8 B$ }
ymax3 M8 o. y4 p( u3 Y6 ~4 o
global-reputation-list
: E( j% K' X6 m! X* g) e7 q6 h( e" G  e
;;
每一个turtle的全局声誉都存在此LIST
" Q  ?2 M9 |6 o! ^( Bcredibility-list& v5 |! l1 @& s6 |# a5 p
;;
每一个turtle的评价可信度& J8 E) S" ~! w4 |7 D; a$ X4 G; L
honest-service. a; E6 I! @0 |3 Q! {
unhonest-service: l0 H' k5 d6 X
oscillation- ?  J, X3 _3 k- ]- q$ H) I
rand-dynamic+ C/ K& U3 S/ h: w( u! N
]$ ~. k. X9 R) h3 v3 V; j, d) _

0 r  t6 t9 d+ f7 d+ Yturtles-own[
1 ]0 a: J3 ~+ @trade-record-all
& h/ O( Q5 A0 X2 Y;;a list of lists,
trade-record-one组成
; y: G' i9 M7 l# |6 [, y  d; \6 Ztrade-record-one
( G5 |- ~* `9 [6 y* }  C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* R* A1 z/ k; R6 W2 h! Z/ ^
$ [* |7 s; x' t8 h! M2 B1 Y' W- }! |;;[
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]]
1 p4 c$ @, T+ {+ Z# q* itrade-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]
' F, C) i- ?7 f6 t# m1 Hcredibility-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
. X0 v9 Z( v/ q. ^4 n) Kneighbor-total/ U& W& n& \% A; J
;;
记录该turtle的邻居节点的数目
- m( Q( {/ J) F- C! W& P) H  h+ E- Wtrade-time9 T8 B% x" R+ ?
;;
当前发生交易的turtle的交易时间8 f: K4 }  |# \* f. Q1 I
appraise-give
0 X6 v- \0 t) ^' M0 ]- L;;
当前发生交易时给出的评价6 [2 o/ x# B! }4 k8 O  {
appraise-receive* N2 E8 y5 S# F
;;
当前发生交易时收到的评价/ |1 A& T# T6 r# @- N
appraise-time
8 b2 s) K5 S, R, j% ?; z;;
当前发生交易时的评价时间& p3 `3 b) L2 V$ V2 h5 k3 F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) Y% |1 ~6 a6 B6 \0 N; \) Vtrade-times-total7 i0 V' N. q! u( g( U3 \" j% d
;;
与当前turtle的交易总次数0 q' M1 r+ Y# L* Q5 l( f
trade-money-total9 O+ p1 D% U/ t) C5 _3 r
;;
与当前turtle的交易总金额) @! g7 _: ^6 n
local-reputation/ O; T1 `3 D) Z" \& m; S6 O  m
global-reputation
# s* b2 @4 P7 }& acredibility
( ?1 \+ {- E. c2 Q;;
评价可信度,每次交易后都需要更新
5 P3 C) J3 @& Q4 b3 jcredibility-all
& b' l' h9 r9 `# J! j9 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
; t/ `0 K9 Z. m! y0 P& W
  a2 H! f; I! i- r1 j$ h;;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
: g/ t% j8 ^- \" k6 Dcredibility-one) R/ o4 \( G+ K4 [
;;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
1 R4 l0 D/ ~0 R; j& n7 {global-proportion
+ |! v; H, B, q2 P5 N5 Z6 S% Z. |customer4 B- [( R6 n* c5 {( d4 b
customer-no% F) C0 e3 f. j2 s1 k, ?
trust-ok5 B$ D# F+ i8 e7 x, F9 c
trade-record-one-len;;trade-record-one的长度
, T4 N0 w4 |' m5 \+ t9 x]  Q' x1 A" _# v

( [+ h- K  s! @+ E/ c' V. x;;setup procedure
. _  m$ j7 A8 u2 ~; o9 }. j2 V; |% y6 l- W+ q
to setup. D5 A6 K6 l) a+ `1 C
9 P9 @2 e  u& j3 L2 M
ca

2 J, X1 K9 Q% G* s
0 F$ s* u# \" G2 U# H0 zinitialize-settings

8 U3 w7 x3 C, E4 G
* E8 U( {/ {& \. Q5 _4 Y7 {crt people [setup-turtles]
, i' p- X  N" n6 d: A" G

$ A+ v  X! h/ y* |& Xreset-timer
: l$ N( z, X3 F4 }5 e, s

" G! K: p( p) I( a4 Xpoll-class

& S* i! N9 i2 v, b- m5 p5 b$ l- y: O
setup-plots

' A' @) L- E7 p+ r; q' N! L
+ R! i, H* \& v  h0 D' T6 gdo-plots
& h& _' e: R5 I% ^) n1 G; V
end% g9 Z5 i( V; B* T* \9 @
+ M/ _/ [2 y% o
to initialize-settings
5 `+ h6 h0 |4 {* L/ b, K5 t$ \7 C7 `# e8 T& Z8 J6 x4 o
set global-reputation-list []

8 ~& H. _/ F# i( z1 d$ S+ a# b2 l3 k& ]
set credibility-list n-values people [0.5]
% l% W' l4 x9 H/ F4 J
' |+ ]8 F% c! n; D/ c0 H2 d- S) \
set honest-service 0
1 l% I) A4 U+ U. B

" T" E2 j+ D# j. F) tset unhonest-service 0
: V- a. W# ~: y) @9 M0 \+ t" ]7 D

  n4 G7 S5 ]0 Bset oscillation 0

, I/ X) k: A& Z5 R. y5 w1 ^* b& m0 \# |" p2 N% P/ q
set rand-dynamic 0

& k' [! I8 Q8 [( xend
6 |. O0 F6 c; g5 `0 ^+ k
* [3 A0 C6 J1 v. z8 o0 q0 Fto setup-turtles
! z1 q( ?8 e' G' r8 C9 lset shape "person"
: X& a0 K+ h: c4 u! `% F4 Zsetxy random-xcor random-ycor5 h% d( `# }( T. ^6 O
set trade-record-one []7 L, C0 H* l1 f# B! h6 g, I5 E

$ O/ e3 \$ e. q( E- Iset trade-record-all n-values people [(list (? + 1) 0 0)]
" G5 y3 x  @( @

! C% t& R% m- U' V  o+ |set trade-record-current []
1 u- R- j# J/ \" r( K) Rset credibility-receive []
* H* a% [, O$ a( K( Cset local-reputation 0.5* v6 d8 Q7 O- u2 l; a% v" ]
set neighbor-total 0
9 v6 p* g; K. |8 U. D2 }3 {set trade-times-total 0; @$ l4 e- q7 h, l
set trade-money-total 03 f3 B  |2 v% e7 G2 B0 E
set customer nobody
4 \8 ?: ~: U+ Bset credibility-all n-values people [creat-credibility]
( Q0 K, y) F6 L/ h5 ^( _set credibility n-values people [-1]$ X* x, s9 j6 `2 f
get-color: O/ W' [( @, E) A1 `' r
) o' k! H0 x; l. c5 b0 ]
end
- g. q: }4 I4 Q3 ]2 e: d4 z7 K9 d/ U  v3 H
to-report creat-credibility! d& t8 j: h0 B) f5 |" b% l7 w
report n-values people [0.5]
+ W- A# \9 G: tend" W- \. n9 t7 Q8 Z3 R

- Z! }; G& w7 hto setup-plots* `4 g, F! b1 G9 @3 J2 ?. v- d, y4 P, f

- w& X( j' E; W1 A7 `/ @set xmax 30

) p+ k# v: e1 Z9 h4 j, h4 v3 w+ A/ l  Y) D/ \" h) w$ L0 S* c. |, M
set ymax 1.0
9 m0 l$ V3 s- _# |; @# t6 M3 r
6 j+ h6 h( y5 z/ f! f
clear-all-plots
* Y/ W& o' k  O' Y; b9 t3 H! l

! m% Y% ^8 k1 N: Osetup-plot1
* t! K- p% w& k& [6 R& m: n1 I7 D

3 J/ K5 E! m0 T$ `setup-plot2
  Q* n1 N8 Z; P  d; I3 [4 _2 e: p$ |: S
6 p, Y7 H- \( d$ Y
setup-plot3
' ^! D5 ], }  |" b: v
end
0 T# }' O: ^+ w/ {- e* ~  E
% D( Q% w# {1 C% y! A! ^! R+ @;;run time procedures
/ ]9 D* \- v0 R7 [8 L1 N& ]
9 ]7 Z, T9 N4 I# }* |7 G: Lto go7 Y( m+ v; g" H* v8 U1 y9 n( c
0 S3 l9 x2 \; {! u, ?0 b6 C5 ^
ask turtles [do-business]

/ R' j9 X. C4 ^" Tend) Z( A+ d3 d" G' S) H

% K( S. U- D8 i' Eto do-business 6 p* }0 d2 |, z2 r

2 V$ o6 I6 ^2 Y7 f2 {- X4 e& `# T9 S0 N; y
rt random 360
7 ?' n1 g7 v0 T- c1 e' v
. w0 h9 P$ X! l( B. p* h8 R
fd 1
! a/ h# |- @" j9 B

# Y4 _3 g4 x; zifelse(other turtles-here != nobody)[

4 O) T8 e4 m  O! K: ?6 j+ E- P2 R# R5 E: P4 p
set customer one-of other turtles-here
. @# y8 P1 N' M% ]

- `' s0 q4 I7 c/ G  p/ s# K;; set [customer] of customer myself
# G) _) ^: X9 U  M
; J4 F, g7 s  M" [
set [trade-record-one] of self item (([who] of customer) - 1)
% V) M( O* R) y% |( _[trade-record-all]of self
) v+ d$ O% R2 K& i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) `$ m# J  o2 w$ h9 |' z
: T" J: N4 I* Y. |4 k
set [trade-record-one] of customer item (([who] of self) - 1)  X# [  c1 I) f8 ?( m
[trade-record-all]of customer
4 G% O# r% _8 d: m4 x( P

, b, `* @. Y2 {7 J; {" v0 {# Qset [trade-record-one-len] of self length [trade-record-one] of self
( ~1 t. ?( r: o5 o. L+ |% I2 n
  \& [' k' ?9 }7 @/ K9 u0 a7 `: U6 f
set trade-record-current( list (timer) (random money-upper-limit))

2 c4 b/ i: h$ {2 _1 V% x8 C0 {5 z4 o% @+ R9 ^  q* f( @$ u1 {
ask self [do-trust]
+ o+ l% l0 T2 X;;
先求ij的信任度6 Q% B/ Q$ D) J2 d) L  z

8 [& f% L3 x: x5 }/ l% ]6 iif ([trust-ok] of self)
) D  K( I' d5 @' D8 `& g& t/ k4 \;;
根据ij的信任度来决定是否与j进行交易[
) |7 D; w* h2 L% J3 I$ Lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 h8 X: [  a+ t
% i. y. j7 W4 Q/ V$ x1 g[

8 L4 {, D  Q# H$ j& P/ w1 C8 t# Z! K. t3 C, @0 h; M; L: V
do-trade
/ v/ h. E' k* Z

, v* S) _9 s6 ^- g9 \4 `( `& j& nupdate-credibility-ijl

0 b1 L% f* ?. c: c4 k  d/ D# Z5 X$ `4 y* ~1 L/ Q# a9 p
update-credibility-list
4 i8 T; y( o0 A8 a/ U' v6 [

9 o4 Z( m2 Y. B( z
$ X$ K2 x# s' u: j1 P- Tupdate-global-reputation-list
1 S! H+ z9 b" P! {1 h
: q' X- Y% V/ @- q, @
poll-class

9 x* X5 N5 f" z! X" z3 r3 s4 S8 \, x5 s6 H8 R2 V( K. d) w
get-color
, K+ d' I& b3 ?3 s, ~) g
* }& ], O; l- f. ]3 U. ]8 s# K6 g( r
]]
, o+ T1 ~' |9 J7 e7 f! P" N' T/ x" M& U
;;
如果所得的信任度满足条件,则进行交易: {6 A2 O0 A9 c$ O: r

- e1 n4 d, `! c0 Q' e% G( `[
6 G5 V8 h& q- C

2 Z/ E. r0 O' s4 R; |% C! nrt random 360
. R4 Q& f$ t3 y. {

& p3 S  d+ b0 Z# a$ Cfd 1

7 z: Z: L) b& H7 ]8 r7 L0 }4 c' X' e+ R
]
/ C! c3 k7 L' x" Y# M, b* D( d

( E3 V/ L: b1 _2 |6 a4 M+ u+ @end
3 V5 S5 ~3 V" {( J% `" `$ ~
; v! e, D2 |* M& z9 t. [
to do-trust
; ]& u  v  ~% Y3 m) T, Cset trust-ok False
$ c) V. M/ b+ U" a- k8 j, n( O3 e& j% p" P

4 D. ?; J7 j% _( o( O& `# slet max-trade-times 0+ {" Q: N* g; I# P/ r0 R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( E6 R  C  N7 f7 d
let max-trade-money 00 b) f, k" O% s3 n1 v/ U" b) Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: R# l, T! r; ]6 R. R/ f: c
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ S2 U2 w( w. E% n# m+ O* X+ d
: O" F: s! i8 h' m& P

  a! y/ R* J3 e+ w4 R2 `get-global-proportion
+ f: y5 r% ]1 c' C! l- Slet trust-value0 I+ p8 u$ Z! j: d+ P5 t. ?0 y
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)
* U* M! D5 k3 _: R4 f# a. x
if(trust-value > trade-trust-value)
# u/ T) g: _# Y$ f9 N$ t[set trust-ok true]
% K5 [8 K4 _; O7 x6 N+ `% W7 mend
5 @/ P: e7 C, l0 s% f9 }- w; W; E2 D/ G0 }* p8 _1 T# p2 P
to get-global-proportion5 \8 o- G% z( p; L- u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 X( n  y& N& Y7 K
[set global-proportion 0]
! l- I) d" ~3 g' \: C* ~[let i 0
! u3 Z' i- s& {  u' C5 ^let sum-money 0
* Q. A8 M! t& @; n$ |$ lwhile[ i < people]' w6 F$ C5 W$ Q* G$ N
[- C( r6 S! q- O
if( length (item i0 ]* c9 u% A# f$ [; d
[trade-record-all] of customer) > 3 )
8 }" k1 S+ C; X/ E: I8 a
[! u% b' f" f5 g! ^( U. N) L( ^6 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 k0 T8 X& p: y6 Y0 N, _  }
]
; a2 G4 ^) U! T/ {) D+ P]& n( t! y! @$ e6 E) W  Y( T
let j 0' q! d# \( m$ a2 K$ Z
let note 05 j. Z; @' E; F: k
while[ j < people]. s, f0 W8 c! q  A8 [9 @! f! |' U
[8 t" w2 I) O: ]' m1 q9 g  B' f
if( length (item i
& z' T. e! V* \& `5 J1 e( n' y[trade-record-all] of customer) > 3 )
. D7 g  l4 t( }5 Y# p/ G! Y8 `
[9 u' V; H/ O# a2 o, _) M1 y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! x& @% r: W! @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ O0 w$ v: h0 v* @7 H1 a3 h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" I0 s; w& R, U' n- b
]
. x6 O' F7 b, r% U2 H& p( ?/ O]
- u4 {" A9 q# a) m+ ~1 qset global-proportion note
- N: q( |) Z. r  t6 D]# z) l3 n* N7 _. y1 t7 c
end
* L& L1 Y% W$ b  \' e4 e6 g! P, @0 h" H6 R) d+ I( w! ^9 u0 F% M
to do-trade
2 a1 V- _) d  ]3 ^4 e5 J+ S;;
这个过程实际上是给双方作出评价的过程
% g: G$ s: r& H! a1 [" Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: K3 ]$ T2 f8 n! _. X" |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 O/ w& Q& g. }7 Y5 G% K
set trade-record-current lput(timer) trade-record-current
! m. t7 Q3 ~1 I3 V;;
评价时间
' l2 h4 c3 l* Aask myself [
- ?  n  ?) [9 Q& C3 C" w8 wupdate-local-reputation- A/ z# A/ b( [, s; y1 e2 B
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 w! [7 {. h7 n$ w; B]$ Q1 r% t, g+ H0 x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% b! d% A! F* F9 s;;
将此次交易的记录加入到trade-record-one
, t4 n* ]; s! h( c) q: E5 kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  u5 _: R4 N4 [: B6 glet note (item 2 trade-record-current )
2 C' w, g% L0 p- V' i; _% Wset trade-record-current
$ t( B; f: c( H' C( _6 Y5 c1 u(replace-item 2 trade-record-current (item 3 trade-record-current))
* r/ g* p" \% I! o3 f! R8 `* E: t- d  ^5 [
set trade-record-current7 Y! b; P- ^& S' q7 s; G8 H
(replace-item 3 trade-record-current note). d; r5 G6 C! e! ?* u* ]! v6 f1 }3 l
& e% `: h/ ^* ]1 Q0 u

. p3 O4 c( }+ c4 Z  o  `; L3 ]1 Rask customer [( s/ O% m1 e  \5 T. A
update-local-reputation
& Y0 e- h5 N. Qset trade-record-current% Z2 T* a& `+ ]$ D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ X9 D( @/ l1 S, R) I6 u
]
- G% f% w, s0 C% ]* V4 F
  O- d7 J% q9 b% r$ U. v/ C
! j3 ?1 E! y  d+ V3 o2 }4 z6 @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ m" D. y7 }* g

/ B9 b2 s: Y! G+ Q/ M+ q/ h6 tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* v/ [& Y2 Q/ V% b6 ^
;;
将此次交易的记录加入到customertrade-record-all
% X) T9 Z3 O( H) D& \end
) E3 o) X- h, E- J1 I
' L# }( ^5 G& I6 K# k/ zto update-local-reputation2 Y- ]0 K4 N9 ~3 K% E; q
set [trade-record-one-len] of myself length [trade-record-one] of myself0 e0 D1 d* V+ p7 F
* J( l* ]4 T' E/ \, N, l
2 l% T4 u4 W- j) q9 y
;;if [trade-record-one-len] of myself > 3
/ O% t7 V4 ^5 O: \* }  y
update-neighbor-total
8 w8 D7 S% D8 P2 S3 ?6 I" Q& S;;
更新邻居节点的数目,在此进行
& S9 Y3 L/ ]: O2 T8 ?' Hlet i 3' e) h4 E4 `5 Y, _) e7 G8 t8 B! ]
let sum-time 0
. C* M0 E9 _  \9 y0 `! nwhile[i < [trade-record-one-len] of myself]! n2 I. m6 P4 _5 P, }: ^
[- E7 K" _& M: g) q! z, F* ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); t- e  e3 R% P' Q, o$ Q; t' Y
set i
- t6 |2 r1 C# Z3 v# t2 x3 F' E7 h8 u( i + 1)
4 ~  {  x( }# y4 e% W: `0 Q
]% r# I- [" {1 N3 S: I. v
let j 3
+ i0 v) c! C0 S' v( r* @let sum-money 0
5 m) b0 l  H# I2 T! Awhile[j < [trade-record-one-len] of myself]
$ {& `! k2 _: K5 w" Y1 r# n[
& e9 Y% X& p( P$ e1 bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" k% }- T4 n! o& x) A* U  I& Cset j
8 o- x. B5 T1 `; C7 u( O( j + 1)

# ?. ~- i  a% n$ f  @& k]4 w' y; T" y' g! V; \
let k 3
" U3 y' S! P) Olet power 0* W5 e4 d0 ]& X8 `( \2 R
let local 05 o3 A" ]9 M! y7 T9 }# n
while [k <[trade-record-one-len] of myself]
( I/ G& h' G7 g1 x6 y8 _[
- m2 T" Y9 r1 w4 F" u4 K; Kset 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)   ^$ p$ g: j, T, s5 }
set k (k + 1)
: n, ~4 E8 Q6 y" l]* W! Q7 c+ q- L0 r, u6 N6 e
set [local-reputation] of myself (local)
, B* {) \- _% Q/ m7 _3 @end
: [  Z2 |! c8 W+ Y3 q. V* Q
+ l: v5 h( f! l; T( m9 sto update-neighbor-total- c% U$ R- T8 s
$ D) w" R+ g  `* _; D% d" z' W* n
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  x% h+ k' r3 I& B5 _" Q- ?& {8 f5 r' y( Z3 L$ F) T1 q2 J4 P6 k) T

+ {* Y2 T+ q: ?' Y, V4 Wend
* E9 U- u* g& H3 q$ P& E/ R7 e, a* _9 g( G' G8 S
to update-credibility-ijl
2 A; _' R; B+ }9 b2 c8 L6 A6 c0 R
;;
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。
# _2 K; n8 x9 d) _let l 0( k4 M: j/ R( y9 Y8 d7 \& B+ N- I# g
while[ l < people ]
: P) Q) q8 W& x5 w4 D; Q;;
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0 }3 O7 o' E) r" `0 G* b
[
$ P0 I2 M( d$ i3 M( B( [3 q2 Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- X$ Y, E2 m' `% H, k  U
if (trade-record-one-j-l-len > 3)
9 ^; w# i- W( V6 |# ^[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
. P# Q! X3 Z: Q. D9 X3 Flet i 3
" I7 U% |4 C% v: V8 `3 M# llet sum-time 05 }* u3 n( W. \9 d
while[i < trade-record-one-len]
. T6 ?8 w& u+ X8 V) Z[6 Z& U( z! b9 g: ?6 M1 h$ a% H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- A- F( I6 m; Aset i3 c3 k* y' K& }2 j3 f8 m
( i + 1)
$ D2 k5 k0 o, j. I% q% c% Q2 h7 o
]% u& Z! E# M* x$ ]/ y; q9 {' x' `- v
let credibility-i-j-l 0% L+ J1 C# a( y  g5 F4 O1 B3 B
;;i
评价(jjl的评价)
5 X5 g# I+ W6 @, vlet j 3  x/ L% e% h  j* Q0 h2 P
let k 49 X" @( M1 O( C4 C+ c2 `* c+ s" B) ^
while[j < trade-record-one-len]
7 c/ Q; H- o, W$ D[" K" |) N  z6 @9 _4 a! n
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, K. T% Q! a
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)
) @8 h6 w$ d6 b$ }. e9 k# Hset j( Z$ ~) z1 ?: a  U, t% w
( j + 1)
5 t7 i" g9 b6 D( X4 H
]2 w; [2 K) }8 x3 X& w. D' ~
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 ))- z, v: I# t, g. \

; P( M1 d, A6 E# Y1 j) S
! K% l1 q% C+ S& g' ?( E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 F' h1 d" Z! j' u% W;;
及时更新il的评价质量的评价3 e- l, z2 U- i2 p- S# }5 R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ S- Y8 D1 F5 K0 y7 B
set l (l + 1)7 |6 ~) U3 ?+ v( Q
]. s5 V" w7 f& r2 U) z: h7 j9 y
end6 U- F5 d) M& u; P
- O. d; B5 b6 E" h( L
to update-credibility-list
# g) e* |6 t5 }6 C$ e8 U9 Qlet i 0
, O& I4 V# \$ Q5 X+ Swhile[i < people]1 g3 i* N1 u) M; f% Q" H5 ~1 h
[
- g) {7 W9 `4 l6 v0 z+ tlet j 0- Z6 J6 c$ z( P# L) T, x% Q
let note 0, h& e/ }& _4 ?' L- z6 H4 w
let k 0
. y/ W+ B' U% c8 t' G% n: ]5 o;;
计作出过评价的邻居节点的数目6 R- E- t, e0 N8 l
while[j < people]
3 H+ B, U. ~" H( ^0 [: C[
8 j8 L# {+ ^' t: V: R) X& p- T) F/ P1 p- Fif (item j( [credibility] of turtle (i + 1)) != -1): _3 G/ ~9 l0 H2 z' ~+ U
;;
判断是否给本turtle的评价质量做出过评价的节点
7 n* Q$ i& M3 W: V[set note (note + item j ([credibility]of turtle (i + 1)))5 k$ ?8 P3 n2 b# D8 S! W" o: w
;;*(exp (-(people - 2)))/(people - 2))]
, C6 V+ O. N+ F/ O, a2 {# v+ d" Y# b
set k (k + 1)
/ W( L, U8 L) }6 P/ G]
  d+ @9 V% |+ ?; o3 hset j (j + 1)2 O' {- J: P2 S% Y6 m# z
]
1 M% v- f7 T) Y! ]+ P0 H9 s, Gset note (note *(exp (- (1 / k)))/ k)
  `2 ^% M  [( F: N7 R* [set credibility-list (replace-item i credibility-list note)
; s' V) Z; U" c. tset i (i + 1)
& `% w3 J) y0 N. V% P8 I2 j+ J]% h$ k% U  U# y2 H. h. _
end% V: T) t0 U' W

3 Z1 {0 j4 R  Q$ G; ~to update-global-reputation-list7 F$ Z5 E9 w# b  R" U8 Z& o
let j 0
8 v6 n; }' i, f2 Q, I/ gwhile[j < people]
1 H) w9 T  m" }& y0 Z  z( G6 Y! Q3 B5 e[- j& E; K1 u7 x4 w+ h
let new 0
% c! g6 V( }6 L0 }* n;;
暂存新的一个全局声誉
% h* q1 V* m0 K( _let i 0
& d/ M1 h' S% t) y. s3 I; l: ~( k( Rlet sum-money 0
% O5 t5 V. t1 F# _$ L8 }. plet credibility-money 0
  I& s+ u- ~3 V4 Y( P$ @3 Twhile [i < people]# T, w; F- S2 N
[
6 x7 e! y+ ~; U: `! Eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 n' @& u. M( ^& ~& h/ S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. q5 d2 H# Z: v% K/ |  kset i (i + 1)
3 ^( Q" K' {3 ?/ N3 @5 J]
5 Z9 x  _" k: D, flet k 0
7 W3 X! V! A9 u3 O0 T* g, [" Llet new1 0  d3 J$ U. `$ ^; @( H. M
while [k < people]
  r5 M- S; \1 z; F: r/ {[
* a5 ~+ K4 W8 u. Z" H( bset 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)
4 r! i! z" D2 p; E: [( Fset k (k + 1)( K1 T$ v% y5 n! w* z7 _
]2 V5 u# `' B4 C# b$ D2 }9 ^6 G. s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 g1 ~2 T! Y: |% O; c- i. ^set global-reputation-list (replace-item j global-reputation-list new)' A3 Q4 t: _5 {8 _/ x- _* R
set j (j + 1)
# q+ U% C0 M7 e# ?]
/ @  ^# Z* C/ N  T* V  \; b1 oend+ l5 o- Z# K5 b# ?

4 M  Q% C& l) ]$ r2 ~4 [1 l  p. I% U' G- D+ m

% D5 W- N8 l) y( g9 n8 nto get-color
3 O: A' o2 b+ s) E) w* i2 o" Q
- q2 B/ b: O! J# }4 _6 y0 Eset color blue

% B# ?/ g+ E! }4 Q# N5 Vend  m7 f( s) h  d4 i! b- H

2 [# ]( o7 c" M9 f6 r; J% ?to poll-class1 F5 E+ n0 M- Y" h! J/ \
end
! G" |0 R$ Y; r, N' O0 _0 ?' h% ~
+ d7 Z8 `; ]  eto setup-plot1
* a! K0 h& ^* T: F/ m% X9 p# W' `0 h. i& r" \9 u! w  P
set-current-plot "Trends-of-Local-reputation"

9 j3 a) k; X# R( _
1 W+ \9 ?" z& y/ n6 Y- |7 ^set-plot-x-range 0 xmax

" |, g' K0 I6 h  i+ i2 M. T2 I# c6 ]- f9 U; \
set-plot-y-range 0.0 ymax
( G) z& {8 y) I1 U* F+ p5 o
end
7 ^1 ^6 G9 v0 d3 Y3 `' h# P8 I' |' a) l8 x
to setup-plot2
  u4 ]+ r& w6 @( P' d8 {' m" T  J4 d# {/ U7 O0 p* d- |7 W
set-current-plot "Trends-of-global-reputation"

5 |1 l" ~/ Z+ w) b6 S& O( v$ d- d) L, v, P% t5 w
set-plot-x-range 0 xmax

  V3 `$ a  j8 |) ^  T( Y! P7 i4 Z) j. [/ j
set-plot-y-range 0.0 ymax

- K9 }6 B) Z9 send0 V) [$ W" V5 T

4 I' p* Y, j8 D& Q1 I! E7 Dto setup-plot30 D$ G! r# Y( j' P

4 @$ l3 L1 `7 s$ t  G4 sset-current-plot "Trends-of-credibility"

5 S- x6 ?4 B1 ^3 t- b  b
4 V4 s( B- _  ?1 E* Fset-plot-x-range 0 xmax

; J( c! j' [; L/ }, f! g4 _3 ]" g5 G- s+ `; F
set-plot-y-range 0.0 ymax
0 X0 n& q) L+ B4 Q
end$ a$ U' D5 L3 D& w* K  z4 o
8 @5 U' R8 T- n# ?
to do-plots4 n: M+ Y- Y- D! S  u& S
set-current-plot "Trends-of-Local-reputation"
1 v1 u1 M6 ]7 h) ?; Q7 D) o4 Jset-current-plot-pen "Honest service"! y- f- F2 a' T  Y7 A6 g7 D
end+ N2 t  k" o8 ~' e; f1 l
: d, ?* |+ F$ 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.3 f5 O! D8 {6 _5 L( Q- s* o& B

9 A5 q7 D- U/ o. Q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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