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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:
9 Y: l" Z% ~2 f8 Xto do-business
, {. L' {; N' r: i9 {7 D& T rt random 3606 V5 R, N, b  ^6 a& G1 V
fd 1' h) D/ z2 n- w! I" ^2 a) o! N* A
ifelse(other turtles-here != nobody)[% ?2 B0 E) A  E9 o
   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# ^" o" R. G9 P- L- A* [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : I9 [+ v/ ~$ ]. M( `# n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 [% \8 i( A4 n* G   set [trade-record-one-len] of self length [trade-record-one] of self
, O8 Z' _: R/ A: A& @   set trade-record-current( list (timer) (random money-upper-limit))3 e7 l% Y* r& s" ?

: U' Y( s. P6 L( y! j问题的提示如下:7 F" X' H* l0 Q1 ^: |" x. c5 X& t
- @7 }0 {  w, n+ c7 u
error while turtle 50 running OF in procedure DO-BUSINESS
" F3 v4 k* ^: R  called by procedure GO( n; w6 ~0 D( t  o2 a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# {* |. ?; j5 O; m& _) n
(halted running of go)* I9 O5 F- N7 T) ~3 O1 O1 I6 O( D3 S+ e

0 b- p) Z& F9 `5 K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~~
9 Q9 \, `2 r$ g$ s6 {1 b- V# ~1 H4 R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 Y% g7 c/ t1 ~/ R2 F  J) Q" sglobals[
- n$ r" l1 u9 V! Y: ]6 N" F+ Cxmax, e& Y; k; M5 k8 `" \9 @
ymax
* a' E( C0 D) Hglobal-reputation-list/ ]( D4 k# l1 |4 y* w" m
- d6 ?) d0 H: L9 M0 n: g
;;
每一个turtle的全局声誉都存在此LIST
" h& i) f9 K5 E8 |$ pcredibility-list2 |1 e0 @% ^% _, Z" k
;;
每一个turtle的评价可信度$ ^$ T6 D7 K% y2 j+ @5 T5 m. A
honest-service
" n' ~+ B8 _" \, k  m6 B7 yunhonest-service
0 t! \( e/ a' M% B9 B- d( coscillation
- F1 D0 K0 Z5 K* |8 jrand-dynamic! a3 _. _+ F- i1 u7 B0 t
]
! R3 g/ S" Z1 o8 i/ J! G& |9 h
; |4 f; D  ?1 [3 iturtles-own[
# |/ m  a0 p" j/ Gtrade-record-all
- c: N& J2 L$ l/ n' F; e;;a list of lists,
trade-record-one组成
4 D) I( I' Z  i6 u, a* j. wtrade-record-one
2 f3 N  z: I0 L6 v8 D5 K;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 X  }1 m2 a; d- R- \) h' f6 {- O% ^# m# i- b4 d) J# Z
;;[
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]]
3 w. M( U5 o+ R/ g1 Ltrade-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]
0 X# e# T! Z7 s" r3 Q  zcredibility-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list4 B- Y2 x% [/ O: R6 O" r9 _& O& G% @
neighbor-total/ q& [! p$ n: C2 G8 {; I' h
;;
记录该turtle的邻居节点的数目/ k: R2 J' A4 I1 i4 I. ~+ Q: F
trade-time2 b9 U( m) c7 T. O# T
;;
当前发生交易的turtle的交易时间: n( p( J; h# x  j6 _7 s! g
appraise-give
- F6 w( R4 Z/ C7 G* s  y7 T( n;;
当前发生交易时给出的评价
( u( w/ H) s- u2 r" @( yappraise-receive
6 M/ J! m- _% O9 J3 z9 Z9 l2 G;;
当前发生交易时收到的评价" O# x: s* ]/ ]" `1 k
appraise-time
2 q- a9 j+ v* a) X4 x: s;;
当前发生交易时的评价时间5 o) f6 v/ y" X' N' o! ]1 K0 q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! |2 b5 |5 @+ k7 G( ~" Utrade-times-total) r3 l4 I2 V; |: k6 _
;;
与当前turtle的交易总次数
6 [6 d; W3 _9 Y  q2 P6 Utrade-money-total% w& H6 b1 d6 G  l* F! \( V
;;
与当前turtle的交易总金额# R* @" ^: S* R2 [( \- m
local-reputation( X" C: I& V- A2 Z* H2 ^- q
global-reputation) U7 Y+ L7 L! r0 H
credibility
" R* n7 O, F( _  ?! j0 k  y;;
评价可信度,每次交易后都需要更新$ Z: ]3 P, L) g& ?
credibility-all, I, h! |! p! m5 v' {2 h
;;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 u8 d3 Q2 i. B5 c2 p8 h9 Z2 h

" W0 h, Z# v. {5 {;;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
9 P" B- V2 \* B, G4 m  F& Fcredibility-one  j9 p' _; s( q) N# D
;;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
0 X3 ^/ a. {1 q5 _6 X2 W& i( tglobal-proportion' [& D+ L5 u3 w' O8 @1 T
customer. `# \" R: k: B" n
customer-no
) z5 Y$ T* j$ u1 w/ b3 Ctrust-ok
. _+ R* A; |3 Htrade-record-one-len;;trade-record-one的长度
: }& d% B2 Y9 o3 z]
1 l! y4 P% T+ r8 d  E7 m& o6 X) l8 r: E+ \; W
;;setup procedure
3 A5 z. D6 h- T; k0 q1 d. l" s* z7 p. G) L) ^! i- ^" {7 M9 V7 R6 n6 D/ z; s
to setup; \6 a7 t! Y$ e$ K& H2 r

( O) r  n1 `7 u; M: e: }7 q5 K! Zca
. t+ W# j" `! w; ]+ e& W2 P5 d
; U7 P5 x, k( t8 Y: F8 `; u
initialize-settings

! H2 b. z3 v8 }" Q
/ j& ~( t9 e4 Bcrt people [setup-turtles]

1 P* R" e' g; O$ h+ ^' Q6 Y9 e% r5 }. j! U
reset-timer

* E5 Z  F5 O. X6 w
4 ~/ t! E' K% I, C9 F. ?poll-class

( b# ]# g' `3 T$ M* H$ f
. S1 T& k/ |- \5 B4 `& v2 Xsetup-plots
/ O9 K: k! K8 ]0 l0 f6 E  E
  S/ Q  V% U! _3 m# h: q) m$ I
do-plots
+ |+ T* r( p8 l; |4 x
end2 `6 I0 c. s5 r

# k7 l' m$ }- `! P. E4 Rto initialize-settings
2 V7 t7 g  j; ?  _# F  D
% j6 r% s  x8 ?. n" Hset global-reputation-list []
. H, D- @3 z" K' e
$ z0 a( H3 M( w  z4 |
set credibility-list n-values people [0.5]

7 i' v4 X5 N- W! U, F- I' T
8 V( K" r+ |0 vset honest-service 0

" b3 A; O( _, q$ D3 G# v" T3 [, N& O% K
set unhonest-service 0
8 L9 v* f% @$ F% H% f* |
" i* K; I/ o) v1 M
set oscillation 0

, c8 Z; {9 i% J; \$ D' w, _9 v& a/ g
set rand-dynamic 0

  M3 A* r9 X. I1 Send9 U6 c) P7 N2 a% P6 Z+ S9 T
, r" l3 Y8 Y6 L1 p% [( R6 K( k, m
to setup-turtles # t+ J+ }# Y% ~, j% A
set shape "person"
& H8 |% X- ~% j8 a$ Q) fsetxy random-xcor random-ycor- X9 [) m/ A1 ]4 {
set trade-record-one []
! A; K: h$ Y7 s3 H" `: F0 S
; h- T' z( _+ {0 f; J# h
set trade-record-all n-values people [(list (? + 1) 0 0)] $ I' E! w) n4 T# C% N- h
1 q1 {8 e$ p$ Y
set trade-record-current []. W' X( s9 [: S! B7 p/ p
set credibility-receive []
# w1 M! a, h9 W4 @2 Dset local-reputation 0.53 d  F$ }. N% o$ e3 R" j
set neighbor-total 0
$ K1 `* M# _9 {" S2 N# {set trade-times-total 07 L  P7 j) D; e4 [6 F8 X' ]
set trade-money-total 0, V6 h& ~) X2 n* t$ t& H4 V
set customer nobody
7 ?, B$ W1 C  \9 E! Nset credibility-all n-values people [creat-credibility]
* H" W7 l8 N1 ]  x$ sset credibility n-values people [-1]
( l/ K" ^0 V  {- N( f8 ~$ @get-color" w& P! `1 A- |3 f5 r) J# S
+ O2 l7 F- x  a
end* V% f5 j& {% m' r
1 \" y: E, m( Y/ Z  i. D1 E5 }4 P
to-report creat-credibility" A: f5 c. }& t8 _. V2 O& }
report n-values people [0.5]% X( q! h' L0 K6 w! t7 v/ x
end
4 O: n. E1 r7 ^& H' E2 h  k. B" |1 u: R- Q
to setup-plots: d% e) p' k' Y

5 r' V/ a$ L5 s$ u2 [+ h( \set xmax 30

# z+ p5 A$ o( ~6 S6 X9 I2 o
& J2 v; }. r0 v. y) `0 \' vset ymax 1.0
5 |. S, H" f4 W" G- k: t$ a8 n

& T# _* \7 N0 k" ~1 Vclear-all-plots
* X, _- Y% }' n& J$ y- G0 M

5 R' ^, d0 J- a% u/ a: o6 q/ Ssetup-plot1

! _. h$ I# {9 u3 H+ a/ J7 E! a$ J% t( B" f
setup-plot2
: U% v$ u  E& w
0 \+ d5 B5 ]( {1 N
setup-plot3
1 a9 `4 I: s; O* a' m& ^
end
7 I+ T6 l  E0 D, i: G0 f" s  [! v) c% ?# P
;;run time procedures, W. z2 l3 T0 G4 M# S+ l# G: Y
$ L: |0 X* u( ~  M4 `& @, r6 t
to go
/ l, A3 |3 i) W& W& o# a+ C/ k8 W3 g$ j9 Q" R  t
ask turtles [do-business]

7 x' [  ~7 w. {. Uend
1 G9 l, q. [0 V& W8 w
. @  N) U! p( ?. j& a1 O1 [to do-business
' D$ a6 f6 D: W4 k: [& u: {

* Y0 \" M  t+ m4 ?% ~8 v1 D- q! U# S  X
rt random 360

, [$ l: g2 X. r$ A
% ?* d5 R; R3 Y$ kfd 1
. H, f8 e' W$ P! [; K

3 l4 S* z0 z! b! V: X# W3 a' N9 Aifelse(other turtles-here != nobody)[

0 @# w$ i+ z- \) {2 V  \9 h6 r: d! P2 f: r; _
set customer one-of other turtles-here

8 s% j: ]7 S' U+ y; ]( F8 h  T) K3 [. p7 c4 b# V
;; set [customer] of customer myself

0 e  c& S% p# O$ M
# g$ i: n' Y3 f" F1 oset [trade-record-one] of self item (([who] of customer) - 1)
) v2 [( A+ t0 @[trade-record-all]of self/ x  ~) T* |4 R7 Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* Q1 }" t# `! ?, @! I" x. R, x/ O8 `/ W9 f* |1 B2 x/ u8 K+ X) G0 l
set [trade-record-one] of customer item (([who] of self) - 1)
. Q! ^+ F! `, Y5 @: K+ S5 W[trade-record-all]of customer
5 e: W8 [8 Y+ j9 {

( x. l* w5 F+ y3 B  n$ `$ a% }set [trade-record-one-len] of self length [trade-record-one] of self

, K/ J7 T5 |. H9 R% U$ I4 T- W+ F- k! Q( p. p4 k3 N
set trade-record-current( list (timer) (random money-upper-limit))

1 p; O8 w, D1 |- o+ c+ y0 ^
  Y! i- u9 }: l( @! p% D! x% |ask self [do-trust]
8 y" X9 O2 x' U1 w# _8 r7 L;;
先求ij的信任度
* Z* i+ p" d) p
+ [/ K1 k" z( q+ ?8 T  Mif ([trust-ok] of self)
8 S" I6 x! i* y( V" ^;;
根据ij的信任度来决定是否与j进行交易[* _- u. y) k7 J
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# r4 h# q1 b# E' k* q/ c4 @) E% e5 v5 f/ e5 u
[

6 L3 x6 `5 Y+ a, g/ m3 b. J& F: {6 A2 y* _8 o4 @
do-trade
! y3 q( P) x4 t& T5 c  ^+ ]3 |
; q4 [/ k6 i' y# y2 k
update-credibility-ijl

* E" \9 t& ~! h+ }/ v7 I! ]0 ?" U5 N. [" }
update-credibility-list
& j- y  e2 j/ i, U; }7 B
" {0 w$ O- {$ y- W  f2 ~8 \+ H2 N
0 y( Z  h$ V  N0 r: Y
update-global-reputation-list
, s- K9 M' ~4 e. t
1 T7 T* S0 b* v- k9 k  U! c( R
poll-class
( T$ u# w, j) ]4 G6 m( ]( Q% E6 X, T, h
4 {8 P: w" P) \+ o- R$ d! l
get-color

: |" l; h0 p) c' t  C/ F2 h' u+ M( l9 X) a. h' b2 N: _6 Q1 p1 b/ P) n
]]! w, l: p+ O0 m# i; }8 U
7 y: M- m- _% F1 u
;;
如果所得的信任度满足条件,则进行交易8 D9 r4 g; D0 U+ p3 n

* |( L) b+ [( X) ]) Q/ b5 O' ^[

( |3 R  g& ~1 |% V
  [, p7 G% z* l3 y$ |1 _9 crt random 360
6 O' I) Q( M- ~2 P: l* o
- L- Y& l/ }+ b
fd 1
/ H, F! k4 g% _( g. _) Y$ e
! m, b; q3 O4 B$ ^; \" {$ H9 F
]
* ?8 _/ P, C4 ?3 p& `
* B0 Q0 p  B5 q% N( Q! J/ ]
end
+ G: P. v7 C& E0 t' j

7 P, o. g, e9 I/ \; K% lto do-trust
$ g+ L4 ?" ]% n* Y  zset trust-ok False
8 h% o3 Q5 l1 {7 a/ H
$ C/ l* ^1 b' S8 T0 B7 }" n
, F1 {2 a5 A4 @. D# g' q$ l
let max-trade-times 0
# H% }( t& c/ ?  N% lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* p) J* ~  C" m9 u& _
let max-trade-money 00 J% a# \9 F$ @" Q, N9 \
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 ^+ P% |. T! r: n6 y& P' y+ Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! x/ x- b: w, i: E' b0 U" m0 ^. ^. ?
% x% C/ {" ?# l4 W) h+ S( y7 Q  L) Y
get-global-proportion, O0 V( b% Z) C- D. z/ Y
let trust-value
* w% U6 o( o/ d4 U* j$ Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

1 E1 t: C  F$ Y8 ~& \/ K5 ]if(trust-value > trade-trust-value)( h6 V9 i6 ?5 X3 \8 T8 K
[set trust-ok true]
2 E9 `2 C) p/ r, Eend& }/ U8 ~* Y3 b# ?# Y
! \* s$ W* _1 e- ~5 [. Z
to get-global-proportion) ?& K8 q: M7 x! c7 O: H4 r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 H/ a% I% O8 b, s3 I5 L* D
[set global-proportion 0]- e! O+ |5 ]: @* u
[let i 0+ I6 h* u, c) w+ U1 Y! j" ^5 C
let sum-money 05 F0 [( a( s4 N) F
while[ i < people]; e$ C6 ^- U& `( Y2 u9 Q1 ?
[: J0 L! Z$ z% [5 G& b0 W" }
if( length (item i) K% O4 t$ o' w* P/ f
[trade-record-all] of customer) > 3 )

. K- r) S' H9 c# K; N[4 s" s) ~0 T/ r& ?' s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), ]& w% _3 y& F, I3 k! O( X  _
]
. ~: L' x( j; f; c- t+ l) j. q3 s]( R/ B  S) ?. k2 f# ^3 V/ g
let j 0. U  H8 i1 H; ^- {
let note 0- Q( _" p) c) l" s% _+ R8 f. r/ i
while[ j < people]
" ]0 d3 ^& ?" O" ?, o[
, e* R+ u7 D! s, _/ ^1 Eif( length (item i
) X( ]- a* L. N5 h% P8 h[trade-record-all] of customer) > 3 )
5 g- R. {% @8 E# t3 ~: g- I. S
[, Y" N) P! U6 e# I' I1 i8 U, Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  r& s) ?) G' z$ c9 B. h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- S9 K/ m: Q2 z$ p+ V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& u% u. t2 s% v, |' h* N: ?
]
* E+ a6 b) k, M; s7 f]+ i8 P1 [! J* Y7 f5 q# K" W$ X. L( }
set global-proportion note7 O) L( J& P+ t+ o' a
]
- Y1 a8 ]1 `* ]6 ]end
: ^+ `+ w. z4 v) F. e) \& {- |6 t+ W8 ?" Z- V" _9 C( [: ]' D
to do-trade
5 O- m! a/ _1 f8 _$ Q/ L;;
这个过程实际上是给双方作出评价的过程
  d2 ]; X. Y& l; Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 Y6 j. O8 A( \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  h5 K2 P( O% I8 R# a- i
set trade-record-current lput(timer) trade-record-current7 G2 U' W' g; ~1 x* r
;;
评价时间! G+ C9 o7 @- y, x9 y# o( E2 c+ u
ask myself [
1 q) M1 y! A2 I4 e5 h% b5 Y1 N0 gupdate-local-reputation# c  ^+ x2 G$ J# g; q" e8 q
set trade-record-current lput([local-reputation] of myself) trade-record-current# s! l6 K, {3 Y( s
]
& D  R# C; s" Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) ^  ?9 r4 F0 `+ b  c& ^( h;;
将此次交易的记录加入到trade-record-one- y. Q8 U- E. ]* U" w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ {4 m0 g' a4 h& ]
let note (item 2 trade-record-current )
4 p& W  T9 Z* }6 ^5 I& Yset trade-record-current
) e% M$ j& o: O; \+ _& U/ t(replace-item 2 trade-record-current (item 3 trade-record-current))
, Q) \: F% \9 a3 L
set trade-record-current
+ H9 p' u; H! q(replace-item 3 trade-record-current note)
, d, d3 L2 f" W7 X2 P
" M3 K6 |' o) g6 D" H

- a% D1 B4 U- `6 F' Pask customer [) z: m% C$ k1 M7 o2 y" l
update-local-reputation
7 g6 L! W6 ?" i# zset trade-record-current
3 Y' T* U% ?" _) }& G& R! r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% b0 j5 U8 n1 \. m]' j( ~. _; ?4 Y& c
8 i- R0 \) i5 z, j6 q

4 k8 w- k: O; \9 ]set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% m2 {- _) n2 O
. }7 \/ N, W, v4 c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' n" p2 Y/ f+ k) C1 T;;
将此次交易的记录加入到customertrade-record-all
7 r* \' y+ b& j6 F5 o" n4 |6 `end
, W. s: l7 `) H/ U& N7 S& B. _0 m( H) }
) a; Z1 c/ s0 L9 Yto update-local-reputation
( H$ j4 p& T/ Oset [trade-record-one-len] of myself length [trade-record-one] of myself
3 C$ R1 h" n8 ~8 ~: x  _' F6 c6 b8 Q3 `, a( `/ a, K+ ]' J! K

( @; S1 J' r  |9 {) L% n( n, a/ ?( e;;if [trade-record-one-len] of myself > 3
5 q# R* k6 \0 K" Y# g/ `
update-neighbor-total
5 S: `, h0 T8 u4 `+ j;;
更新邻居节点的数目,在此进行
9 u9 K0 T- c) B# u' `let i 3
; _  b# @- n" X7 W' z+ `' dlet sum-time 0, i5 f& [( c4 o% C  P3 T' p
while[i < [trade-record-one-len] of myself]
. F5 ?! D; U! z% W1 w4 I- k' T# j[
) E( ^* t0 S; N$ ^& L" G6 k7 Y& s9 V# kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): t3 C/ X" V7 W: ~1 _! x. o' o+ @6 s
set i
. r. \6 i" D. ^) y, O. r( i + 1)

7 Q# }3 F, u% M) v$ H# k* J]' G4 r% b) Z- \. d' z- y- B
let j 3
; F8 Q* p! ?) nlet sum-money 0
" T. _" P, J7 y: f0 Twhile[j < [trade-record-one-len] of myself]8 J; d# u$ {# A/ l: a- a  U
[
0 N! u+ ?* g9 e8 N2 K" ]7 F( X* @9 fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): ?% b. ^, b9 H4 L* v# R1 S
set j# K% \5 M7 e, ]8 o8 z) t- m6 V
( j + 1)

9 a4 L) |& r/ l+ J% s" ], u]" U0 q  g' M3 T. ?* T& X
let k 3) F3 N& v! B2 [6 @7 B: \$ X
let power 0% V+ u6 i! R7 s( M/ Y
let local 0+ e( M" n1 m0 |) X( t8 {
while [k <[trade-record-one-len] of myself]
- u/ M8 \% r% c. d. E' l[; k9 k% Y% |7 F5 a
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)
, R) n1 q; ?, j1 @4 J8 N6 [" |set k (k + 1)# U1 p7 R8 }; A' ~
]
( Q- F; d+ m( j; J& T' Tset [local-reputation] of myself (local); C5 g4 l# a/ i  F$ X4 d
end
8 K# z, z# S* |% B/ J, S& }7 s
) z# _/ c9 ^- ^$ ^  m" ito update-neighbor-total5 L. e) `: l2 G' L
, [5 e1 N6 X, O) @
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; g/ p8 M0 @  @/ Z1 V
2 C! ?( M7 I0 _/ t! E; v* I) J4 l; I

. G* a" s0 O- J# cend! s) g! r1 K0 W, }) f3 C/ v
: Z3 F, n  I' ~! Z
to update-credibility-ijl
. k+ }& u$ n$ V4 h  `+ A3 O' n3 F* `8 u  h1 e; h2 ^
;;
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。: s& |* L' f0 z6 _% v8 p
let l 0) |  V% Y$ q/ E1 B- S, [+ D9 t! g! c
while[ l < people ]
0 \8 |1 F$ M3 g/ x;;
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
3 B+ m" e% a" `6 O5 l$ U[
4 @3 ~8 B4 U4 Y( q0 blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% C$ G! g; V  C: Nif (trade-record-one-j-l-len > 3)
: d% y7 d" O: L8 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/ T+ J$ V3 ?( E4 r% [# I
let i 3
" e3 {9 C* r4 Y# C/ Zlet sum-time 0
* v4 {; N3 b9 z' s9 b2 Q. }while[i < trade-record-one-len], H8 _1 I7 w5 T' r" E+ t1 Y7 r
[
7 p. G; @+ D- J1 Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 e% f& P7 C; C- g3 ^
set i
6 f* y6 d6 r- F8 Y( i + 1)
! G4 O$ ?$ N- c$ M. D. `" s
]
2 P7 d! ?  N: P% ^' n. H1 J7 ]1 hlet credibility-i-j-l 0
; ?/ E) Y1 f, Q;;i
评价(jjl的评价)
4 z/ ~! e: a  m4 M3 h9 \let j 30 u7 @) B: _4 c; z5 n- |' I
let k 4
  l+ Q7 V9 M; h' y) K" Q& |$ t: F$ wwhile[j < trade-record-one-len]  R# Q' D6 m/ _: v
[
7 w& q1 B7 X' Y5 Q. Cwhile [((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
: h( p& S: x8 ?- m7 X2 t. Z/ Dset 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 j8 ~" I% G; kset j
8 G! ?* @6 r: L& f3 p( j + 1)

5 @  ?1 L9 J6 \3 a/ x5 P" C9 L6 U9 []
$ E4 f) y7 I* e0 M8 \& tset [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 ))7 V1 I$ X5 I* K. S% [, E

9 J* k. j6 P2 B3 W+ R

" `+ I( ]- d% H6 @3 _( ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# A) \* Z/ H( A. i
;;
及时更新il的评价质量的评价
6 d* ?) o8 K5 hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! E( [( ^2 d# Z+ M0 ?set l (l + 1)
& m$ N3 P# U) u5 V+ w% M9 x]  ~! S: q/ ]# P1 Y& Y: A: R- k! d( x
end) |4 s. J3 c- ?$ w

7 B% |: v- Y7 b/ }$ m  Z# ?4 mto update-credibility-list
  s/ e9 G/ g8 ?% N4 C+ T: _let i 0+ }) g/ [" M7 f* E! q# D
while[i < people]* s0 X# W8 H- o: U
[
+ J+ T6 k* r2 f0 k3 F" B+ g. T  _let j 0
0 {- I, \: z% {* olet note 0$ f4 f" [4 b; S9 U' }# ^, D0 A
let k 0
0 q' S# L; ]3 n; W4 l;;
计作出过评价的邻居节点的数目
& f* F3 p) g& d4 Y! d, h7 C; ?while[j < people]
* f/ S8 ?3 Z& O$ V" s4 _/ J  h0 d/ z[. L2 e. X% ~" w6 k5 i0 X
if (item j( [credibility] of turtle (i + 1)) != -1)2 A: Y( s3 P7 i2 A* ~+ A7 F
;;
判断是否给本turtle的评价质量做出过评价的节点
& |( P5 C) c* k. `5 q" }[set note (note + item j ([credibility]of turtle (i + 1)))+ w  W& x( S! h% X# }
;;*(exp (-(people - 2)))/(people - 2))]

/ ?$ R$ S5 H! ?! K. eset k (k + 1)/ u  C; v: d* H
]
+ O% X6 Z* r$ G& x. s* C6 tset j (j + 1)
: M. {6 H* v2 V]
% C2 T7 B3 \# V. o( `8 Fset note (note *(exp (- (1 / k)))/ k)
0 |* z0 I; r1 w, n# C+ g# k# Fset credibility-list (replace-item i credibility-list note). B) F; j4 W. q* a! A( j
set i (i + 1)
- V( _9 `: a9 T]
0 `/ a: I( W0 {" `9 tend- J3 |& P! k! M+ {

, o' ^- d4 e7 Q+ {: P- y9 h" Hto update-global-reputation-list2 \) a( {. b* |7 C5 k+ H+ S
let j 0
! Q* i2 I& b5 V: q) q% _! n3 kwhile[j < people]" R% F! j) i' j& J* g- C
[
# m! G: j8 @- s* a0 Ulet new 01 o9 i; W; D0 n2 _' q
;;
暂存新的一个全局声誉
$ F2 |; `0 y: G! D) nlet i 0
( g6 s# H8 X. g5 B9 ]% `let sum-money 0! ^2 _( f" W$ q  x0 U
let credibility-money 0
, a; N8 H% p9 Z5 n* A" Mwhile [i < people]
' h2 l8 o; }# n* [  h[
$ W  E+ f) G% w( |0 eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): |% i8 Q0 |( O4 |4 _
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 q  a! j9 G8 }( ^. F8 k. J
set i (i + 1)' V7 H9 h9 c, O  d1 r
]
9 \" c, P& n$ Ulet k 0
/ F% f1 r4 v/ C6 J2 h7 f0 ylet new1 0( ]+ z, n% T1 ~
while [k < people]2 l- C7 A  h0 S, n
[6 o# M  a2 G1 }% D+ B
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)
, p# _- {6 _# F1 o/ B6 pset k (k + 1)
3 [1 S# ~) J9 W: y! m: H8 b# R! E]
) f# M: z; x  h: f  g7 A* vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! f- W  |7 z, U9 w) Z$ j$ _- H
set global-reputation-list (replace-item j global-reputation-list new)8 [6 G( m$ c% ]) M5 ?
set j (j + 1)! x2 o  ]( \6 ~6 [' Y
]* z. a) S, y( `, U* W
end  {( m/ a5 a8 ^/ p" r% ]  N

& q" v0 ~! u: p0 i" c0 Q6 l
: p' R2 N+ D- ]1 e) u3 k+ ^: B7 @
7 n3 l# X/ Q; Oto get-color
, l6 z" H- W* n( C/ A8 [) @. d9 W
set color blue
- }, a  v! g9 h1 p+ z
end3 E6 U2 [+ U0 m$ Q: k
& ~: g& g1 A% R
to poll-class! t# {0 k  }  o( |' B
end
0 {: ?; h& C# E8 {+ J7 m3 a* E
+ ^- o/ i5 z8 z- X+ Wto setup-plot1
( D' N; V1 s* Y
5 W; l! a0 d) \" {* z/ k- ^* B+ Nset-current-plot "Trends-of-Local-reputation"

) M$ u5 h. \2 o9 M/ y
- |4 h9 p9 ~. Y, E$ L3 e8 t6 cset-plot-x-range 0 xmax

* ]- D9 Y' v! H
4 I2 M; O/ C7 Sset-plot-y-range 0.0 ymax

* p* f) A* r2 n3 h# Lend
, x1 X. Y2 h) U0 W" G0 t9 h  n9 i6 g$ k9 M
to setup-plot2
7 K- S+ m5 I- C2 g5 K) Q, o2 d" ]1 \& L
set-current-plot "Trends-of-global-reputation"
& f# x% D8 ^1 S% E* _- r: A2 r
* ?2 [' d' K( d8 w
set-plot-x-range 0 xmax

: G# W. ?5 I- J, L, }/ }! v" ~
$ Q# ~  u  r* u4 ^set-plot-y-range 0.0 ymax

' ]$ l4 e' E1 Q% T( ]6 kend
" X, C0 z, l7 k. e9 E5 w0 O
: k" V( ]$ F3 O" U9 Eto setup-plot3, c4 v5 s. Y. i) ]0 y; v

$ i8 ~6 D$ R0 Y4 |# q8 ]set-current-plot "Trends-of-credibility"

" E& x+ u: T2 e' _8 m4 v
$ F3 m( z. s0 P7 @" Q1 g0 Y- A7 L* r3 `set-plot-x-range 0 xmax

0 ?8 M2 `" j( \+ V6 t# V' l; q9 @4 o  o8 ?1 n
set-plot-y-range 0.0 ymax

' Q) ]- e4 j' }0 `. yend0 K4 u' z" K, t+ n! V* D, M  L- l+ f

- z/ T& p! F- m( c. n# o; Nto do-plots7 i1 v$ |% g- r' T5 m/ J
set-current-plot "Trends-of-Local-reputation"/ \9 C8 x5 v0 X$ y& q
set-current-plot-pen "Honest service"
% j+ f, V- ~, ^9 c. y0 p/ r5 ]$ s/ `end
) l' j8 E3 z$ Y7 \: X- L9 l" P! T2 D* t; m/ P; l6 ?/ O4 o- T
[ 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., M, t  Q4 B2 W! P' y- N

4 `! O/ D2 O" g" c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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