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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:
0 i( v$ G" P  z  ito do-business
  L2 S. [$ I: N8 G rt random 360& s& @( f4 b0 N+ z, O: Z& X
fd 11 G/ r* U! Y8 D
ifelse(other turtles-here != nobody)[
6 c+ ^  @; w1 r. Y   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.; c: y" [) X/ {. H) Y1 w; I" x  B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 I9 _$ N, F( z1 Y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" h. h( R' n! Y8 o: X5 q
   set [trade-record-one-len] of self length [trade-record-one] of self
7 {8 I, b4 w% {   set trade-record-current( list (timer) (random money-upper-limit))
* q' p+ D# R$ ?+ E% P9 n/ n) e: ]& U! T1 e
问题的提示如下:
7 U* U  h7 F0 K1 L: w6 g; _8 g/ T5 F) L9 p- z
error while turtle 50 running OF in procedure DO-BUSINESS
' l1 w6 t3 G. U2 p0 O! E  ^  called by procedure GO
+ G! U+ ^5 m9 r! \4 M' _2 [OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, v* o9 o, D7 Z. C
(halted running of go)
. o7 t& Q8 P3 q* ?+ p8 ]+ {4 P) s! s! e/ r0 P: h) Q
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~~$ L1 l$ t! m! G
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
  j3 j! z8 g6 m4 T- E+ vglobals[+ ~* Y  B& u( ~, i6 C, N% X0 W. i; r
xmax
% |+ a% `& U4 j, A5 Rymax
% {$ o( r. z1 P+ ^! kglobal-reputation-list3 U* ?+ x/ g( h  L7 h& `7 I

+ O% D, @6 D4 o+ x6 g/ j9 m! O* k- R;;
每一个turtle的全局声誉都存在此LIST* C9 i+ X" S9 t3 w; O
credibility-list) t! A6 ~( s) N- c
;;
每一个turtle的评价可信度: l7 H# B4 z4 }" |- l" {+ Y
honest-service4 A. A8 Y* Y- a
unhonest-service
+ g& f" e9 }' F$ Poscillation6 g3 T8 R$ `7 a/ f5 W4 M& S
rand-dynamic
% R3 [$ o# i3 W* Q3 t! [2 t]
* P# v$ P, D8 T
3 u  }) \" V, u- k4 \4 P% Z6 mturtles-own[+ a, P3 U4 P: g: |
trade-record-all
, S% q8 b8 }  w2 R7 C4 t;;a list of lists,
trade-record-one组成% Y, M. M% ~0 C6 U* J" b
trade-record-one
1 R& v1 E' a2 T; j;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! _7 X) |+ M! d7 ^1 v

) K, [* V; r, I2 X9 J  S% F;;[
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 n7 U! |& G. ~. T
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]' m$ H6 L- _+ B  U- D8 R2 q
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+ j0 D4 `7 F- N6 s) i/ P
neighbor-total& L3 v- z, \( e4 ~; l
;;
记录该turtle的邻居节点的数目
" l  f1 I) A7 [trade-time
6 P% s+ x5 m' J: h' f2 H  M+ p;;
当前发生交易的turtle的交易时间
* I3 s& W- T, Aappraise-give0 V( w9 R% x# r, P1 a7 s  f% l4 Y
;;
当前发生交易时给出的评价
3 r5 r3 P7 j  l# p) c1 w; Vappraise-receive
- T+ C4 L5 y) ]( e;;
当前发生交易时收到的评价
! E6 G/ }( T! Z$ a# Eappraise-time! L" C- k8 G! Y; ]9 j$ R* O& a( Z
;;
当前发生交易时的评价时间' n% P3 s3 V! T& U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! I* f, o# c6 f) c) p
trade-times-total1 b* O  }' ]5 ^
;;
与当前turtle的交易总次数# l6 u" q( _2 x) ]# G  ]1 }
trade-money-total+ U3 `. |- c+ a6 @: E
;;
与当前turtle的交易总金额
) {: f5 G6 @7 o* flocal-reputation0 p; ~4 \& S1 p& W! {) I- i
global-reputation7 Y" V8 v- `: b2 j8 N+ n7 i% d  f
credibility4 ]( r+ j! Q2 N5 u) q& b  d" z4 n
;;
评价可信度,每次交易后都需要更新) A9 T  I6 b! w! y5 _9 p% C
credibility-all6 _+ h" |* [4 y
;;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6 {4 Y4 r* F+ _3 S% W. O# _8 |
6 D. J: H& g0 J- p) @
;;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$ C4 R+ J" p8 H, M
credibility-one
7 h: k; ^  ~' Y* U;;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people7 c" ]4 {  C/ x' p8 \
global-proportion
% D! b; V( h( `  K* @" Zcustomer! M7 M, q5 `2 o2 X+ ]: C
customer-no
1 S$ ]$ _8 ?! R5 K" ]! F& }trust-ok
, e0 c$ v+ l: Ktrade-record-one-len;;trade-record-one的长度
8 }$ e# A0 ^: n$ {) D7 j% V( ~]& K4 E" ~: Q8 o# v1 q+ }% V' \

/ T+ ]% i' i) l& L;;setup procedure5 ~! m  b6 i) a9 N2 x! M$ Y6 {

7 J4 l* @* m9 t/ `  d/ B9 E4 U4 rto setup' S0 ^* T3 g( ]& l! B8 M

5 ?; v! ~& J0 W4 m; P: ?ca

' w; i4 l& Z. O. S+ X; E8 g
3 Q5 \* W+ d; Zinitialize-settings

4 Z/ |; x0 `3 F0 N0 z
/ Z( g: ]# ~- }- b& W( B/ Lcrt people [setup-turtles]
* l  K4 H1 j) ]

0 I2 v; l2 {. _9 e) ]/ J) A! L1 vreset-timer
, u; q, C. @, N0 |+ B* h- n
7 |; p) J- M+ X1 ?% _0 Z
poll-class

$ V- ?7 e! H9 Q4 o9 f4 Y; ~
" F' S. A( @1 |+ ~setup-plots
. F5 V6 W* W7 ?  e+ m
+ X5 Y: X' H; ]% D
do-plots
' Y+ P; k% t$ s' U2 r: ?
end
8 z8 K& E& d( s) l
/ T5 l, }$ O5 X  C2 `3 W1 W7 f; lto initialize-settings) W( }- t; q6 d- Y3 H9 k
" f7 g, {0 J& M
set global-reputation-list []

( r  R. A; t6 z
- N+ M9 g' K' I) G" D2 J/ `set credibility-list n-values people [0.5]
" x0 v9 f5 R0 V1 [
4 Y5 a. Z1 f9 d
set honest-service 0

( ]! i. a" I- F( o# K( [5 Z- r
+ c9 K, u1 a8 L1 g3 d% v" Pset unhonest-service 0
. m2 \0 ]9 E. d! |( f. `: E4 {
  w6 O/ H$ [. @
set oscillation 0

# g" {! ?2 g- E5 z% W4 V: T3 a3 D/ W/ h- _" Z3 `
set rand-dynamic 0

& O: i' d3 h& n* vend
2 M; e2 Q8 y/ @; b1 f6 |! ]: S( s/ n# c2 I% ^
to setup-turtles 2 q7 y1 m# A/ ?$ J
set shape "person"
* `0 b( y% D5 Lsetxy random-xcor random-ycor
, b5 b' ?6 ]" N4 ?1 Uset trade-record-one []& |1 u/ m' A, n

3 E4 `* P7 v& ^% e& k4 h6 g( O1 Q( vset trade-record-all n-values people [(list (? + 1) 0 0)] ) M# I* [7 \/ A7 ]7 H5 N) W

' F6 R3 Z- B( Wset trade-record-current []% E/ d# i* H6 c, Y
set credibility-receive []
8 O4 a4 o& w* ~2 c! @, q/ zset local-reputation 0.5
3 h- L$ V  A) v* y8 K1 b: z% fset neighbor-total 0" o* h$ N& z+ n! x- [% T- I
set trade-times-total 0
8 x6 i( V8 L0 n- {set trade-money-total 07 `5 w7 ^/ V: B- K% i
set customer nobody( l5 d5 i- N" _1 y
set credibility-all n-values people [creat-credibility]
1 k5 ~7 k( h) K! l$ p1 T1 vset credibility n-values people [-1]
+ L- |7 ?8 w7 O1 F* yget-color& o# j9 K$ w2 N4 P$ _4 e+ I

: M& E, K& Z4 ~9 p- W" dend8 [  O0 u" n8 g3 l8 L' |# ^
7 Y) G0 v$ G! u6 b
to-report creat-credibility
# W. s% \2 O4 D% v$ O3 freport n-values people [0.5]0 r5 S; J& K. h6 y' X/ R; z
end
6 m% p4 ]  m1 W. s$ T& M# @) ^0 d6 Z( m) `$ z+ W, ?
to setup-plots+ v9 G- M+ @9 e: B3 I- Z3 L8 C, Q" A
0 W9 {4 D5 D& m5 e! m2 w3 d
set xmax 30
! W7 E% x4 a4 i4 S; e- ^

) G  l8 e# @9 ?; |4 eset ymax 1.0

/ h* l. m: h$ H7 p: j" S& z
2 G% A# Z. j; T) V; y! }, vclear-all-plots

& E* V8 Y9 s  M3 {$ q! R; @+ `' O( m% W
setup-plot1

- t6 X- I/ S. y3 j" M, D0 z
) g! O( b6 u* c, \setup-plot2

, M! r9 t  m: U! h9 B  K7 J& k" b1 k$ V
0 L+ _' a# L7 w6 R/ z  }, Psetup-plot3
' o' q( n( R& ?' e" E$ h& f
end
% k! ^" I% V; s. ]& W1 ~# x# w2 v7 L! {# a" b
;;run time procedures  D& A* D% h! g; s0 D. r8 O0 m4 x

  W3 _1 _# t8 R' kto go' e* s2 @% \* d% T8 ~

: b, Q, O  k& Qask turtles [do-business]

! Q, t; s3 z8 Z6 [' x6 eend9 r2 C& f! V1 m9 I" k6 c& e
$ n* z, r4 _$ t1 m! u
to do-business
$ u& ]  [) I% x0 D- [1 p: i. G# z
8 o  V* u+ v; X+ F

; _4 F' M+ _+ ^. L( B1 O) \rt random 360
7 G+ N& u8 K9 j/ @. x6 X

9 \) Y' }/ A8 C, rfd 1
4 B: Y; l- l8 s  K

: P; U% x& t; v. O! J) fifelse(other turtles-here != nobody)[
/ d4 r6 C9 k0 `; |, S: ^& K  w

2 r. t8 j4 w9 n: \. o2 ]7 Rset customer one-of other turtles-here
: B7 Y+ t3 K) _- k- c& s

  X. F! N! k( L: ~8 F7 a3 c4 p$ ?5 X;; set [customer] of customer myself
9 Y% J2 B" I+ }# l

- H# ]' [/ ?, v/ i' j. `set [trade-record-one] of self item (([who] of customer) - 1)) `0 t+ I9 |" p. |
[trade-record-all]of self; b, Z: D5 a' a) {' g, s0 r/ }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) P5 G" M/ G5 E- D& d1 g
4 k" V- i  ?6 p
set [trade-record-one] of customer item (([who] of self) - 1)4 F: c1 s4 \5 t' v. [' T
[trade-record-all]of customer

6 L4 f' M& w$ f' z1 C/ h0 R. P- v( D
set [trade-record-one-len] of self length [trade-record-one] of self

) g$ w) _8 m* R/ l) ^' r8 l
2 b. r" i2 C8 C4 V) z" O; sset trade-record-current( list (timer) (random money-upper-limit))
9 A, u: Z* |8 D2 [
7 W! W9 F' X) \% q3 m
ask self [do-trust]
  X: K+ V3 r( x. |3 f;;
先求ij的信任度( z7 S# u6 k/ e: `# t2 ^; C

; w, I- L. b) c. J& |3 T- Kif ([trust-ok] of self); b% ~' ~9 r0 X: P) D
;;
根据ij的信任度来决定是否与j进行交易[
$ J" p8 n3 Y; Y; C0 s' Pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 ]. C" Q4 N, d) ?1 u
9 q, ^2 x) M0 ?5 C1 _) ?7 s& B% W[
2 V9 ~) _; J: k1 f  h

) |. U7 M9 P7 ydo-trade
# o. _% E5 m2 T5 B; Y4 n$ R
  m, C7 N6 ?9 P% S. h4 W
update-credibility-ijl
, M, X! q- `, N6 m! S

# a( _) B# W& S# `) T4 f, Tupdate-credibility-list3 N4 o$ D& e4 v7 S/ C

6 q9 j/ H$ X( O; n) k( M- ]& ?+ C  P. D$ T8 {
update-global-reputation-list

8 |, _; T4 @9 v5 s- {4 C/ p. o" p' j# K7 m2 H) l0 Q& |
poll-class

) K4 d4 i. A% f1 S& V& _1 A+ E7 n. B. O$ T
get-color

4 m2 ~6 {8 q0 ^( B# J" O# K1 M: o% `$ n7 b
]]
: f$ G  w0 ?1 Z; s' O4 a1 t5 @# J6 k; I3 A# @! _
;;
如果所得的信任度满足条件,则进行交易' r& m; Q' l! X& R; w" a

( g' D. J2 U6 S" D& u+ J" a7 Q[

) a4 h' N5 Q0 v& W4 A' y8 ], ~0 j' s& d- N% P7 z3 K  o
rt random 360

( X5 S: R$ J" R
. ?3 M* z5 O( U9 a0 ~fd 1

& m% Z9 R/ D3 H, y# Q. L9 \
) ?; H$ I2 ?1 U+ [- e' t]
+ q, n" w7 ~; a$ `8 s+ S0 Z

! k% L* s8 d8 N8 hend

5 M) G" @% N. T5 a" u- E/ c
  k8 Y7 Y/ C. d% P& Tto do-trust
5 Y+ ?% X; \5 q' @- Y1 @set trust-ok False
, Y# G! l( I2 [$ y
% y5 K% z( K5 Z, m
; ~) z; I0 f. W
let max-trade-times 0% R- ?/ f) ]1 `9 `$ f# ^- e4 ^+ p3 l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: V( `' e2 C5 a$ ?, |5 E
let max-trade-money 04 M# v& w  C- l; r' e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) k0 y/ l, W! G6 q! t
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): U, i* Z1 G' E$ F4 [2 N

9 T( s8 `5 n) n$ W( Q3 K- r- h7 @) Q
2 E8 ?: i+ r8 I" c# D3 I' |, F. G1 t
get-global-proportion# n& Q2 H& ?3 t* h% u# a8 s* X
let trust-value
: X. N9 h* R1 t- d6 T# l5 Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 _1 I5 z+ P: z6 k" A! Pif(trust-value > trade-trust-value)- D0 U. G7 b  W# F& T! n
[set trust-ok true]
  K$ c. L6 W9 W% _3 V# bend
2 F2 N8 k* V8 Z% s' p- T  j; T7 w' }+ J% ~9 q" U# ^, b
to get-global-proportion
& s* `  a" u* E. B* uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- l% Q8 D) c6 ^& z. _5 u# Q[set global-proportion 0]% [  a/ v* y0 n) ~
[let i 0# R6 R- g2 [5 r$ r" j
let sum-money 0# b, t$ _- E/ O3 |9 L4 Q
while[ i < people]7 e3 v" M3 J- ~
[
0 C7 \3 l7 O) iif( length (item i0 p) l7 h/ f8 |
[trade-record-all] of customer) > 3 )
* l1 k: S1 b( N
[
( a5 t) V* ]/ N' ^- ]: M4 t- Uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, T$ D9 f! {; j1 j]$ f) f# u* V# h) ~
]
$ w  x' L/ w  olet j 0/ w* V( X% a5 D4 }- h
let note 0% w* I) R: |1 A- ?% i1 A1 H, j
while[ j < people]; ?1 j$ Y2 k0 l) a) S
[+ f1 ?; ~1 ~1 R# i. Z$ C
if( length (item i  D$ C2 D9 m- U/ o8 ?9 d
[trade-record-all] of customer) > 3 )
, I' u0 I, C, I( Z) q: r
[1 m# @! Z2 J  z9 n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)9 c& D" B) F" b) e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- o" O. S! S( ?# a$ ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# k; i: n( o% _5 i; ~! T" I" @
]- [( d- P2 C4 Y3 c/ c
]1 E+ F' w* |7 {  C4 J! L
set global-proportion note, r" m4 }/ h6 N# e' |
]0 S% z8 X4 ?) g3 f4 h
end* b4 g( d8 Y5 |, P

3 U4 q1 T' i2 ^% r' j" H+ O5 Qto do-trade4 q; J" d' W6 B/ E2 c/ b# S6 f
;;
这个过程实际上是给双方作出评价的过程( L7 e* D7 H& V( N% k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 W0 h2 v) q! Y: N# b: u! \4 q; ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 V6 |. Y1 ]' gset trade-record-current lput(timer) trade-record-current
* M0 ?* V) s' Y; x6 T8 G( d;;
评价时间
5 l$ X7 f, r: j4 Yask myself [' z, [5 O% u- ~1 U
update-local-reputation6 f/ z! A8 k7 @" Y7 ?/ X, j
set trade-record-current lput([local-reputation] of myself) trade-record-current- z9 a% b4 q  ~8 }% k
]" m" N. Z, o5 n9 M3 S
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 m+ ^8 ]* P7 [9 ?/ d" _, H) L;;
将此次交易的记录加入到trade-record-one2 V; B: ?8 V" d( w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" t" D( X6 {! ?2 o0 a% [let note (item 2 trade-record-current )
6 o( c4 X. V: N) L3 p1 F" n$ Pset trade-record-current
: T9 P! y, Y, U! j( o2 @(replace-item 2 trade-record-current (item 3 trade-record-current))

' G- ~" `% ]+ |6 W9 W8 {set trade-record-current; b9 D6 {4 e8 Y. c, ]0 }
(replace-item 3 trade-record-current note)* T5 I: Q% `: I
. L9 ~" M0 Y; H( c/ q

) y! r$ `! |4 y" `5 a) Aask customer [
/ m0 h, ~% u0 v& m1 L; Z- |update-local-reputation; ]) A& e9 O0 n8 t6 |
set trade-record-current
6 S- h0 T% s; _3 Y4 p, ^% k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 E9 w: T8 O' L]
" V5 }2 H: ^: n4 A6 l% [1 w
# \$ I- {6 K) ?/ T$ }9 |' B
+ `2 {9 ^- f( s0 r/ P. G% z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* [9 l8 G2 L4 {* ]* d$ ~

, s! K- t% ?$ e8 k8 A7 N8 Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& k4 Y  w% p# a, `5 D;;
将此次交易的记录加入到customertrade-record-all; n! p6 l# K; |9 }* x; `3 U. R
end9 `" V1 W. d9 i+ }9 X2 O) L- k

0 x) o! N% M' S, \6 tto update-local-reputation
8 O4 M1 N' f8 Fset [trade-record-one-len] of myself length [trade-record-one] of myself
' N: V! |  t; H. J9 {9 X# Z2 [- A7 C  Y2 C6 v) Q) ]! v
8 X2 A" ~; s: j) u# x* \9 w( ~
;;if [trade-record-one-len] of myself > 3

' o  D' b- v( C/ _9 x7 M6 ~5 Xupdate-neighbor-total) y6 d5 V9 @! J/ H
;;
更新邻居节点的数目,在此进行( T" @) ], B/ c8 k% O; S4 z
let i 3) B5 O' _/ X6 ^' e: n3 U* w
let sum-time 0
% m# c$ L1 J0 a9 Ewhile[i < [trade-record-one-len] of myself]8 G/ U- {1 s: c  u* C
[
8 g- X* F; G7 Q' \6 Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% x# M1 j+ w* [
set i
2 O' H3 Q# c7 d! I. |9 T; Q( i + 1)

7 _) C/ r2 y! c]
- R0 N) [  Q2 j8 L) M3 Y+ T' W( Ilet j 31 {6 c5 i9 L/ {  f% K2 x
let sum-money 0
' G# s8 Y/ L/ n' s  X7 D* Mwhile[j < [trade-record-one-len] of myself]8 S9 {7 n8 n; |! h0 W5 ]) J
[: Q* s  g, {2 o# L
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), Y2 R. \. z. h
set j$ ]3 \- a2 D+ ?( B$ |
( j + 1)
: N" g/ _- }  y8 X! \' k
]
0 Z' @0 i. r4 S" O: \let k 31 h* @- M& H! T, i0 Z
let power 0! i. L# J5 H4 _0 Q: k4 h! J" S& L
let local 02 e" M2 k& l: d9 @( K/ {
while [k <[trade-record-one-len] of myself]
! @, ~! M. e" j, b7 S4 |0 c[; K' k  C8 ^; i
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) 1 R7 D1 i& G$ J* A" W$ P
set k (k + 1)
4 d- Q7 w; @  M, X" {2 V. o]. L0 l* a$ Z1 j  x9 K7 Q4 \  z4 J
set [local-reputation] of myself (local)
+ v4 n2 G6 K8 y8 Z" g6 Qend
2 q. X$ f9 R0 J: L0 W8 M7 g& |0 [
+ [% S, a0 ^2 C% E" Jto update-neighbor-total
  M& c9 }) P9 Q; L* {# |3 K" F/ [6 l* b; \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], z3 N# x; A. I/ u6 x

7 n" H8 C. L* u3 c5 P
" K7 _1 ?2 p8 H1 K
end' P1 A" x6 f' t( h

# g) w- `8 h  V) C7 {! s! l1 gto update-credibility-ijl
4 l6 D6 m4 @1 i5 s  V$ ?) D3 o, ~
0 T6 ?: O4 f, `, b( j) ]6 e;;
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 Y3 R  S7 Glet l 01 A% l+ D  y" P) z. n
while[ l < people ]% ^& P7 I* q4 `; V) U
;;
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
$ F! e2 w1 m  P9 h[2 N4 a3 a9 h6 h& V4 ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) ~: l4 x" g0 U: a
if (trade-record-one-j-l-len > 3)* ~4 ]! Z% s7 v9 @7 }& H
[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
" w# k2 h1 `3 j" Glet i 3
6 `0 S8 c: z8 Plet sum-time 0
7 S# D* f' d% C! `) C4 [% `+ i5 o1 _while[i < trade-record-one-len]  a  V0 e! F& ?3 |3 |; [
[; W3 l$ [7 K" `" {1 `1 a( n7 O
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) C# E$ O( G) W! _$ U% y, O
set i
( Y, b  X6 h" N% u- Y( a7 c( i + 1)

& r" u& ?% f; f7 U  Z& g1 O8 _- o]; V& `6 D- _4 L( E/ g9 A5 Q& P* r
let credibility-i-j-l 0$ b& h* L5 {. P) E
;;i
评价(jjl的评价)  U$ R+ L) u2 d3 ^
let j 3, o- W- W$ i" G8 W+ A
let k 4
) U# Y- B, O1 g  Awhile[j < trade-record-one-len]
6 a2 }1 R- v- q! ^0 ^[
- ~; V9 w3 w+ X3 Vwhile [((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
1 l9 p# w$ C8 {& }2 Pset 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)
/ x' t3 l  s0 j1 nset j7 m& q0 t5 x# u' B% f
( j + 1)
0 L4 R6 X3 V5 ~/ }
]
# t: p, A* O+ s! ^1 y& s( B1 Aset [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 ))
8 S$ L  P6 G5 s% L+ Z% p8 l2 V8 P5 V8 l" Q- C% V) x, O
% M! F% W) h5 r3 ^" j2 @9 t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ E6 }8 M+ F- b0 w2 {8 d) M" C
;;
及时更新il的评价质量的评价; _+ |8 }$ `: \: {2 Y* v
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 N1 U& n1 }# S5 T- Q
set l (l + 1)$ n5 B7 k: m$ z
]
" n( i6 g# K# h- O6 R  j" Rend
  n$ K; \' E6 M  e- t6 T. @# l5 ~5 ]+ h% B; ~- |/ D1 y3 c! v
to update-credibility-list
3 X2 Y/ [1 U, ]8 Y1 T6 }- vlet i 0! X+ `- p+ e) p: g" Q% f, R1 d6 X7 J
while[i < people]8 I. {- \- ^3 h
[' u( t4 e$ d% w: l/ ]1 x4 h7 s
let j 0
9 x/ L& n+ m8 ?let note 06 B3 \  V  O4 [0 y/ n" m
let k 06 ~: s1 E2 j$ d. F
;;
计作出过评价的邻居节点的数目
9 Y9 ^4 T* R4 X1 S2 Pwhile[j < people]
( ]6 }( A1 a; ^[4 A0 \; f, t& R0 j; \
if (item j( [credibility] of turtle (i + 1)) != -1)" `5 J8 @' Y! t* F
;;
判断是否给本turtle的评价质量做出过评价的节点6 c1 T0 ]# G5 ^, U  R  j- q  q7 ]
[set note (note + item j ([credibility]of turtle (i + 1)))
+ l1 u  J. L6 Y;;*(exp (-(people - 2)))/(people - 2))]

4 I$ b/ j5 ^) f6 T1 `set k (k + 1)* `  s" p& p3 S1 p8 i9 c2 W+ U
]
) q5 j3 ^; b* L) P" S; d" `# p* vset j (j + 1)8 r0 W% N$ j. Q! H7 T1 l4 G% u; f
]
( U6 y* N5 E% B- p, o; m7 \) Nset note (note *(exp (- (1 / k)))/ k)
9 w! E; E7 @+ C( i# gset credibility-list (replace-item i credibility-list note)2 ?$ g/ o& o& ?' }
set i (i + 1)
) \& I6 x( Y6 k. [1 I' x( U]
, O* l% w! e% Y" A! `5 \0 y7 oend
" S. t: h6 U- d8 p! x! n# Y, U
' i& k6 A- O  \0 lto update-global-reputation-list
+ ^4 r8 }% C. S( A$ i- r) hlet j 03 y. i: T/ Z) _$ T, {" i& V
while[j < people]
; S' \, M1 c4 y' L[9 ]7 t/ d1 z' `
let new 0
7 w6 ~0 j! m1 o;;
暂存新的一个全局声誉
: F" C0 p; {9 H2 E! qlet i 0; S8 e( R6 D3 k$ W) p" Y5 M8 `& o
let sum-money 0
) {+ N3 @) J: D* ?4 zlet credibility-money 0
5 X) }, [6 i* O# |$ u$ Fwhile [i < people]$ K% ?+ a& q- o7 ]2 B. h' q
[
9 }5 |! G/ F2 b' \" X* Z' `% A$ K( _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, }7 m" U$ ?- F2 s8 K3 F+ [$ Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) ^* E; v3 g6 v4 L+ n! T2 t0 o
set i (i + 1)- f; @$ h# w' m  i: p
]+ ?( z1 P# N8 n" D
let k 0- i4 \3 o% ~3 u% \) ]; ]& B
let new1 0! q; x  z4 [* I1 V7 {( G. Z: ?' |
while [k < people], l# k5 r( h* Y- a8 k1 d
[5 u5 |/ e" C" F$ @1 q8 q( @
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)! n& O; j2 p* q% J, i% U. S! m; f
set k (k + 1); @7 L$ X% R4 v
]
. Q8 p4 S, E$ F& `6 W+ xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 H& C( e7 X" [/ @% c8 s9 @9 V% Bset global-reputation-list (replace-item j global-reputation-list new)) A& ~1 p; X7 E1 Y# [8 E
set j (j + 1)
. |0 g- Y6 n0 @0 u( J9 u: l' b]1 C! k) E' I5 Z2 s* t6 [7 h
end
; B  L6 U) Y$ p' Y. `8 f' F, F
, q4 f! i* m5 T! O
  P$ U+ O: k* p2 N- ?: z: E: f" V, |% A4 r% R  }
to get-color
% a& c( T/ j1 [: i- y
$ l# Z+ b0 Y! J* A/ @set color blue

/ N' X! b$ |3 E. O& n, t9 Jend
& H; ?. ~) }+ r6 z8 `" n, Z+ A# c, j0 `( b# r( l2 j8 O
to poll-class; a2 F+ V- F9 m7 V  B
end; ]* x; B6 H& n
4 W# O% ^- Z9 L2 O# w7 C$ o& Y
to setup-plot1
# |2 j& m: M. e. x4 X$ a4 A; k0 S
1 s; G" K; T- l8 _! n" Rset-current-plot "Trends-of-Local-reputation"
' c8 N7 M) H7 j/ Y- |

; S, l  c: T8 s& Cset-plot-x-range 0 xmax
. a+ R) b% h6 R6 E

& c4 ?& `7 E1 n+ H- A  Gset-plot-y-range 0.0 ymax

8 K0 W9 I% X1 I! C/ Vend
3 A- F- T7 [$ F1 \' V+ I
  ]( _7 j& A# O* Dto setup-plot2% N' a1 v# ?8 C' V& H8 o8 ^
! P1 i5 H6 Q; c' [
set-current-plot "Trends-of-global-reputation"
6 X) x/ j: N4 t1 N! \$ z, p
# O& I, `) b" l# Z0 u6 Q' j: D
set-plot-x-range 0 xmax

( d1 j+ y- G; N8 }  y0 p
& g* I4 K- s# U4 ^  u* u$ e5 xset-plot-y-range 0.0 ymax
5 f; |& B* H+ _* p
end
: k' H/ ?3 O& A- w, m7 ?' x
2 w( ]" |' x. A  O* y. T" g. [" U0 [" mto setup-plot3
* w  Q( ^  l; R% m7 T& f1 D( ^
+ ~, B3 ]! A/ C0 [/ x: kset-current-plot "Trends-of-credibility"

% T$ ^" f" {1 g# K( y% r7 S7 Y+ m* n& y7 A# ~9 u1 v
set-plot-x-range 0 xmax
& \8 Q7 m- h& R' m0 ^/ c8 }

8 Y0 u! M5 I; I3 ?1 Rset-plot-y-range 0.0 ymax
' i6 t( f' c1 D; _, s0 f  ?% n
end
7 b$ K) H, ]) {: g0 @8 C+ p9 @1 K/ q! n3 B/ T8 _% L; M* V, d
to do-plots
1 n9 e% e$ \, q6 w% Y- j0 p( ^1 x. zset-current-plot "Trends-of-Local-reputation"
* @3 B, u/ J  p! K1 L8 Y) I1 Hset-current-plot-pen "Honest service"
" m3 P, G( Y! f, v; s, _; I4 K% ]end
5 ^4 H; o: [, f' r6 D6 Y9 G
9 R( Y% \" S) R  {[ 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.
. k( @7 j$ }# @3 F" x" o+ ~/ p3 J1 U
( g( N1 O7 g' E( j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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