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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:
% M3 l/ Y+ e- f3 e7 p" Wto do-business 4 H/ [9 x0 l* X3 q' v$ g. D8 ~: X5 \
rt random 360. U9 n" z: D/ j1 ]: \3 g8 J
fd 1- m1 Q. z$ S; p: s
ifelse(other turtles-here != nobody)[7 }3 A9 `; w4 I2 I; @( S$ z0 P) J- o+ G
   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.: ]4 m( m" T9 a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) E. `. a+ Q# p% k# ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# c$ F9 w. O, Z# v" p/ B
   set [trade-record-one-len] of self length [trade-record-one] of self- W- m% ]! V2 k4 W8 v7 K' d1 P
   set trade-record-current( list (timer) (random money-upper-limit))
7 e' l  B' W6 Z( x* y; O  \) _* [4 B
问题的提示如下:
. B5 g# i, F7 T9 h, N
7 L, v! Q. q; s$ n& t  uerror while turtle 50 running OF in procedure DO-BUSINESS4 C  N* h+ y7 J' O
  called by procedure GO7 Q8 N+ C! q. K2 Q  O: R  M4 q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: E1 V4 M0 ^; N5 D# U7 ?
(halted running of go)- w. c3 b3 P! X& ]

( C  P0 `# I! c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~~
5 e( e3 c6 b2 w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
$ t: V0 V9 r) v% j, E) N+ Aglobals[2 f2 d# w; |* M# a. @0 {
xmax
+ M+ m: e( w$ kymax' Q  R; }% u7 F3 v  v8 u' B4 i
global-reputation-list
1 M8 p3 W. M# U9 g
. m1 {; s- a& r7 q' L" s2 l;;
每一个turtle的全局声誉都存在此LIST
+ U" E$ c% M* E, G/ z9 Fcredibility-list5 U# ]3 r7 v1 q
;;
每一个turtle的评价可信度
2 ]0 Y9 ^' c/ D) I5 Zhonest-service
6 c* L1 x7 y/ L; e2 i9 v8 t# Yunhonest-service1 ^- z' Q8 i& n( p1 E/ {* q7 k6 a
oscillation0 n9 n7 |( |1 B. X9 o, U( `5 e* i" O
rand-dynamic1 ?$ o% W* g( m/ z
], M4 K1 S, |5 g/ I: \
. {; m+ k; \9 R4 K
turtles-own[0 T2 v( C5 T: l9 T( C
trade-record-all( m+ S. F5 O, o3 i1 C
;;a list of lists,
trade-record-one组成
$ B) n  E. b8 Y  a5 T0 Utrade-record-one. N0 _$ M% I, _3 {
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" c# V7 J- Y: f1 Z* J2 h- Y# d& t% `3 ~) M0 s" i7 {
;;[
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]]" S2 w- Y' i6 |
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]
& Q( I7 w/ t0 ~! m: `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  \; T7 D* I  n- i) ]5 z
neighbor-total+ Q$ Y  s+ o% N
;;
记录该turtle的邻居节点的数目) q+ m( b4 K1 P+ d8 H& Z
trade-time
! T+ S- ^! W, Z% v) b;;
当前发生交易的turtle的交易时间
; K+ N0 e# n) q6 Z9 E- A1 R" Lappraise-give5 @6 i2 k, l  _$ l" v, }, U8 @
;;
当前发生交易时给出的评价
& ^4 O$ l1 n9 o- Pappraise-receive
# R' J" C' }5 w$ R) w* e7 h;;
当前发生交易时收到的评价. w( x8 ?* Y- Y6 m
appraise-time4 P/ g2 a; Y4 o! q! Q6 D. u
;;
当前发生交易时的评价时间- }+ ?! ?$ J- b1 e' S7 |; A
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" Q5 L  U: h- C2 g) V: M5 g
trade-times-total# r8 @6 O5 B( h, |1 @
;;
与当前turtle的交易总次数7 v: i" a% h" @; v% n  M; X% R
trade-money-total5 z* ^) k( y5 c! p5 j( Y. g
;;
与当前turtle的交易总金额" a6 \0 |* g: c9 ?
local-reputation
2 `2 Z! m9 y: r' g+ x) N% j6 lglobal-reputation
( }/ Z* f  c' M8 pcredibility
  n$ ^! o" F! ]4 B! i! s* }3 k;;
评价可信度,每次交易后都需要更新
5 F* }. Q: `/ |; X& ccredibility-all
/ f% a3 A% L: \0 k;;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8 w3 ~$ V$ Y1 c' U$ O- J
: W  u) W! N# m9 e! n
;;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
/ ^$ t( T/ ~$ ]8 q1 r+ V! jcredibility-one: d9 t; }$ v8 z( P/ r7 ]7 _9 G1 x
;;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# t; e& w7 B% L5 A1 H8 e7 u
global-proportion5 Y& Q5 G2 Y9 @) S: c1 A8 ~) z+ l
customer3 q' I: q3 d% }9 b8 l0 M7 F0 s4 m
customer-no
5 X+ e- U2 w1 r2 Utrust-ok1 [/ Y, b. ~6 y! Y8 c
trade-record-one-len;;trade-record-one的长度
! R5 f: `; L: Y2 s+ m. H/ J1 Y]
0 Y/ e$ s  e. p8 o$ I
- ?0 ~1 M/ z$ n4 Q, d3 n; [7 A;;setup procedure0 A9 {: [# ~: f& {, c- @

. X# W5 O) Y" F2 Bto setup
9 Z- [5 z: a  }# z2 v
3 Z7 }3 f; v5 m% n0 ]ca
: e0 p( p( C6 F: A

' O: e5 b' A- y. B; P; rinitialize-settings

" \: N5 S- _/ r$ m+ _4 o3 l
9 y5 i' P; C& i& m/ H! jcrt people [setup-turtles]

/ @9 ?5 `- X" L2 {/ e9 u7 Z: ~% R4 R* a. i
reset-timer

1 i( b/ V9 G8 M" h+ F9 h; X4 T1 s  r# E1 X) I
poll-class

; ~! O" l! ^+ t- e9 }1 I$ V$ o) X+ _* s$ _  |% T+ p8 |8 R
setup-plots

) w9 F1 Z& ]) Z( y: H9 z8 |, c9 k" \1 p! h) t4 J$ s9 [* _
do-plots
8 J; _7 [3 _7 j5 e  T
end8 t9 C* e7 M9 l: r3 S; I

4 j- X+ W8 G; p+ }4 Xto initialize-settings
8 o4 g6 ]5 v0 b# B, Q/ t* z8 U3 C% m
set global-reputation-list []
/ x4 q8 v) u0 ?, c
5 x2 ^: R1 @0 L  O
set credibility-list n-values people [0.5]

1 k$ h3 c" y8 n0 S9 N% N; a! W/ A( n; C/ j8 J% Z8 R. c
set honest-service 0
! }" M+ c. t4 E; R
! n6 G( ^9 H2 F) C' a
set unhonest-service 0
" V& H; I2 c+ i% f6 p% |
9 h4 N  L! R# b! P/ d9 E
set oscillation 0

/ H- K5 C" V( j( |/ T/ i) Q
9 A! [3 O  z" Z5 f! b; i  Hset rand-dynamic 0

6 n! _/ {1 F$ q2 ^end
* a4 r1 ?; Q5 h( Y% ]) C& [3 V, ]) d8 }3 ~4 o
to setup-turtles " Y, D  C8 G2 z# i2 P1 E% n
set shape "person"
0 {; Q- n" h0 L/ \setxy random-xcor random-ycor
% |3 D( I3 S2 B8 e/ {- o- D; h' Nset trade-record-one []
/ Y) d4 w/ K( C8 W5 H; [

, q5 c$ z" U8 [- j6 qset trade-record-all n-values people [(list (? + 1) 0 0)] 2 ?# {5 X+ Q4 @, k% C
# ?+ E) O0 g! B1 R0 }
set trade-record-current []( q; U1 j3 m0 ?( i, V) d! x2 S4 y
set credibility-receive []5 j- j/ X& h$ G& u- G$ o
set local-reputation 0.5
$ U" l! q# ?) P! w+ s7 C0 R- Rset neighbor-total 0) b3 w  D( L( ~' Y
set trade-times-total 0' Q3 R' r" P  l( h5 a( y* @8 K
set trade-money-total 0
( o* J* B' b- ?- v" [  J3 ^set customer nobody
* ~, f% C6 D( ?/ ^- c; ]set credibility-all n-values people [creat-credibility]
, y0 R0 z0 }, |# gset credibility n-values people [-1]
5 T7 p9 v) d- V: Wget-color
1 |7 p! @# e. W6 T6 R- `
$ U* O4 \* W0 _% N, z0 }6 t
end
$ E- W" e. H! C5 D4 [7 o5 [# @3 j% e. z
to-report creat-credibility
; P$ b" Z% J% I" x  Ireport n-values people [0.5]1 X; R! m% Y/ T1 F. g% n' L: U
end
  w9 x& G& e4 u) ?
) h# y1 t# F0 K+ S# y, @3 l$ Wto setup-plots
! S  R9 L6 }2 D, Z: X/ P, n
2 h9 U  z9 [, Bset xmax 30
* F& f! B1 Z/ z" `: [" x
& k( W. C) ~$ N
set ymax 1.0

! A* }! T- E* i6 T1 u) s* p$ u' M( J1 [3 a) _) S# L9 g
clear-all-plots
  |' f5 k! g5 s6 y, |( F

; y& E5 @5 A9 p2 n+ hsetup-plot1

/ X  S+ F  ]' |
9 v3 @% |3 e7 bsetup-plot2

' n! @7 e" v/ t, F, K; G" B0 f: {& F" M1 y
setup-plot3
) M/ g1 R) b6 q* S1 x. z
end
* s$ q8 Z8 k- D3 {  W; s, }+ j/ H
7 k& f  j$ L2 U% U  u0 E" P;;run time procedures
* J- y  c% X1 o7 Z5 |; k% C% X3 L' S# ^
to go0 J- H# a: _8 J& x3 z
9 ^% w1 C) A! {6 Z: s8 q! {; Z0 W8 }
ask turtles [do-business]
+ e/ O  n, s: _  J) A& L, ~
end- W3 b9 O! @  W6 e. X+ P9 n! y
% y* Z$ B* k7 m6 c$ j
to do-business
6 K& `  s  ]3 F9 T$ O
6 o% a8 j) E) w5 B. d

6 ^# G4 b5 b1 Z. w5 |6 art random 360

* Q' \+ S. i4 L, j6 f0 w4 G4 `; ]. v& \0 t; I; I
fd 1
! c5 P/ I* c" z& C' z

; O( i, r1 L3 ^# m9 s2 [( ]ifelse(other turtles-here != nobody)[
1 T' s3 C; N$ J' y
$ b( t4 G/ u# ?/ T2 v# I
set customer one-of other turtles-here
5 s9 D$ M# ^- L" r+ t+ |, b
( t4 h. p8 z' B9 `& v, l1 ]
;; set [customer] of customer myself

6 ^" d5 z& o, `7 s2 I% ^  I  b0 p3 A; A% g- o& k
set [trade-record-one] of self item (([who] of customer) - 1)
! h& y- j4 l7 v: }1 W3 i" C7 Y  O[trade-record-all]of self  a/ x/ W. T: A8 n0 b) X4 X/ f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( |4 Q4 x4 `1 E2 N/ M9 \! P1 v: u2 `% l5 w7 \& v3 A
set [trade-record-one] of customer item (([who] of self) - 1)
3 U8 B+ B  x7 R[trade-record-all]of customer

: k$ e( S8 Y# O7 @' H# `3 }
  Z! m) n4 Q3 L. Cset [trade-record-one-len] of self length [trade-record-one] of self

8 i6 y+ ^) [- j7 S( l8 Q) o8 p
& `3 S3 x, ^7 H! t. X  xset trade-record-current( list (timer) (random money-upper-limit))
/ O5 W( \) Z' H5 ^

2 g9 B% m! s( i2 E) cask self [do-trust]8 \  z/ S  T3 M$ P5 `$ r
;;
先求ij的信任度' Q7 I! D! r  }" H

3 T! t3 G" G- q8 V* W2 |if ([trust-ok] of self)4 ]$ U( W6 G2 B9 L) [6 j: t
;;
根据ij的信任度来决定是否与j进行交易[
% ^$ d+ ^1 w# |# ~ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  B5 U8 i& j) s" F5 m
! @- a. N1 o% ~1 m) r. Z
[
7 E& S6 p7 d- A& l+ }& X4 P4 Z! a

, A; f6 D) I- l4 odo-trade
- d( K8 I# y  \

! Z1 S( E, r7 Y2 l" Z8 }7 {- {update-credibility-ijl

" F0 e0 w' w& |) e5 a
( \" }* j; e7 o, X% K2 {/ U! E. lupdate-credibility-list* g0 r0 K! ]2 f! [

1 I1 ?; o3 m' s
  t# o8 r6 Y; r0 j1 rupdate-global-reputation-list

* {0 h& o( ~, |- ~. y2 A8 D; Z/ w7 b9 `( u8 K# I9 M1 a
poll-class

, M# F, {8 @4 J& ~0 z* l0 x" X, X* J; h
get-color

/ I5 W2 U1 @# e7 {
/ `0 p9 Q! Y' A! L1 [/ N]]1 H  W# p, {/ q) l
! o: |$ O) g3 N) S; H
;;
如果所得的信任度满足条件,则进行交易6 y. k+ y- j7 m) i  j; \

; [* H8 R; G) b* d  Z' m; ^: b, a[
5 P8 R  J" u$ l  ]7 b: R
/ a2 _$ h' R3 y* c7 Z: i9 y
rt random 360

+ d4 @( u: z. P. R( c# g
0 d+ E) Q* v# s4 C% M4 i6 j/ [& ufd 1

9 ~# e. P3 z5 O! i- _& K- M1 R
8 Y# ^, P+ D- ]. q! M, G]
4 c( w% X# b; F

$ u* K9 P* I* T8 Yend
3 y0 e- [5 \4 n3 q# w6 G
& {% U' D5 `+ m& Z+ U. m0 f1 g
to do-trust
6 W( w  ~- @* N+ u* n- Gset trust-ok False$ C; U& R2 q. R' _$ n
; ^9 H+ r, c# C5 I7 S

; i# b; r& ~$ Tlet max-trade-times 0
. q/ P1 W4 Y: f! Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# x0 ]$ W9 }; {
let max-trade-money 01 @9 B8 E% B! W) P1 |, {
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% {& v( B% H2 Y/ \8 N7 W) Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; R6 [) [$ A$ P' g. j- S, N/ N# Y) J6 I1 A2 ^* e( W

; {2 S" `" a* k0 Bget-global-proportion
2 D5 |* O& F  Nlet trust-value
) P! b" x5 ]8 A  g4 Llocal-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, I7 A8 K# aif(trust-value > trade-trust-value)+ T. j% P" z9 i: K) X9 x2 v
[set trust-ok true]% S. L2 T, J, h$ J  J# H. q* X
end
* Y: w" x1 c3 @( q1 f8 s9 X( A& u2 v6 t% t& H: u; S) M8 E
to get-global-proportion9 ~9 [$ r. y9 A& {1 I
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 y/ f" G4 p* r: K' F. k4 |8 G3 t[set global-proportion 0]
' M8 J5 d" p, S7 ?6 V( ^* z2 ?. n[let i 0
7 ^# |3 `& Z0 J, u4 ~0 J( s8 v. Dlet sum-money 07 v4 @* D1 y* w, d
while[ i < people]
3 _6 r) t6 J3 E  `( R[* v0 A! i- t+ j& o
if( length (item i
- M- `1 h# U0 S% q5 \: c[trade-record-all] of customer) > 3 )

  S& {+ ?! ^1 {0 `0 d$ }[
- j* |. C! v* s2 |+ b# ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' A/ B* i+ y2 C% g
]. s2 ]. f  c& I$ ^$ S& b' s
]! E. g) @6 k& B- ], J
let j 0, M$ ~) W4 ]& I
let note 06 g- ^5 _, o: g0 r# l
while[ j < people]
) e1 l% \1 J% j! k[
/ h3 T9 e" z! t  G" [$ Jif( length (item i
/ X8 X% w1 O7 {6 s7 N[trade-record-all] of customer) > 3 )
. u% X( u8 r& ^5 F% g; }
[' J  G6 j$ r$ S1 t( m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& C/ r, G7 T- t" K) _4 G. y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 {/ [2 J1 |% l$ w; V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 Q- f8 Z+ r% X8 n" U& j7 w
]/ X! p5 w7 [  x6 K
]
( ]4 A! h; i6 _; A8 b' Hset global-proportion note
' C0 y& P1 x( @  H6 ~]4 q' K# |: z3 I# W: z2 R
end
( O/ g( n7 o2 X4 i6 u9 Y# Z4 M4 S! l- |9 A) ?- {
to do-trade
/ v1 Q$ ^7 g1 t( c$ c% N;;
这个过程实际上是给双方作出评价的过程
4 v: H( ]6 M" e7 a8 b9 B- x0 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ y' d& O4 s9 Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: T- w' ?% }% g* V0 t5 e: d: l
set trade-record-current lput(timer) trade-record-current
9 k5 d8 q/ r1 l& @# R, I;;
评价时间
' l) c5 \  G, [7 eask myself [
+ J1 {  l* h% s7 n/ a0 `update-local-reputation
5 s# V' z4 {& H$ l- o5 ]$ zset trade-record-current lput([local-reputation] of myself) trade-record-current
; m5 W9 o; ^2 O0 X' S" ]]7 |6 K( `9 p% y  G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 b3 }0 R, @% Y3 b+ e3 D* i;;
将此次交易的记录加入到trade-record-one
: g& a) O3 e; A- ]4 uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). N  v, u8 a' _0 e% r
let note (item 2 trade-record-current )
! t* w1 c" _  hset trade-record-current
0 N& ]' S4 u- C/ C(replace-item 2 trade-record-current (item 3 trade-record-current))
3 b9 B% _( @# W5 M2 h1 \
set trade-record-current
+ I! V; _, _; u) J(replace-item 3 trade-record-current note)1 v8 [% N# j! s! j. ]1 O
) m+ E+ Y( U9 H' }; S8 w
8 G5 Q* g. c6 v$ n
ask customer [/ G4 M, d$ Y5 `8 l" @5 [
update-local-reputation
) \6 x( R; X/ l: {0 E% Rset trade-record-current3 _% x' }$ u% p8 P
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: n- U/ W9 Y- I, D4 j) h# P: A
]+ I% l/ Z) B% S8 V

4 H8 t* U" a& o( y: U# z9 P- v2 X9 q
) Y$ f- M! |& }: k& I. Y! Y& t
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- S- o" s: Q! P+ S
+ |& f5 U3 |" J; g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 Y  K5 D. t2 G( d;;
将此次交易的记录加入到customertrade-record-all3 K8 e& j/ O! T+ Z& ^' t4 d+ f4 ^
end& n6 c% M% T0 Q

  _" p8 N: S  p3 }' e: T; ~to update-local-reputation
% p  d) u$ R% u( s4 ?% Rset [trade-record-one-len] of myself length [trade-record-one] of myself/ b- \6 Y! J& Z- E

. M5 V. H% }5 K; S% ~( x; ]* a; M1 \5 i9 r% Z; @. O$ l9 p
;;if [trade-record-one-len] of myself > 3

# h6 R! c4 V5 h( H0 U4 Dupdate-neighbor-total
* g; q. i& y3 a0 i0 C: C;;
更新邻居节点的数目,在此进行8 R+ m" r1 u' b) K' U: l
let i 3
$ _) A2 W. F+ w' M' Glet sum-time 0
8 W/ C4 f% k$ J2 G: p  x% x' ewhile[i < [trade-record-one-len] of myself]/ e3 P1 J4 c" S6 K+ L
[* A/ p$ ^' }9 x/ M
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 N( r. U2 D2 o" M1 v3 mset i
( T) A- f6 r; V# q! [( i + 1)

" z% L& k* U) d: g% H* }]
5 w+ |8 ^& u& v3 Llet j 3
! s: a8 d; w, g" u; _2 c! Mlet sum-money 0
4 O0 c3 N+ D' \$ k+ i$ V: ^while[j < [trade-record-one-len] of myself]' o9 X! l% K8 C* S6 n6 ]4 Q7 [
[
9 z+ J3 Z& _/ {6 Z; t+ 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)" E# W  O+ A0 M$ Q
set j8 ?& j) N# m1 Y) `1 ~+ q! ]; H
( j + 1)

' U/ i! {# \8 w! [$ M, M& ]]$ N* V! x/ F: ~5 H$ r
let k 33 s1 D( y* Y% ^; c3 M( H$ `/ J
let power 0! J9 B/ m/ G6 \3 _' V/ ~1 B
let local 09 G! E  M* Z8 K: E
while [k <[trade-record-one-len] of myself]
8 E/ N1 i+ V- N; Z% ~. B[0 `: b5 I6 s. b! r8 r. Y9 K0 y
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 3 w5 T" Q0 o* b
set k (k + 1)
( X2 K' M  i3 c3 ^]' j. ]3 X# f  E" A# U( V
set [local-reputation] of myself (local)4 m( Y2 `$ ^. l) I: B
end$ l' h2 Z4 |* f7 E+ d- g3 `% @

1 o: i+ Z$ J# M" Oto update-neighbor-total! ~9 j5 V$ U+ g- `9 G; o
6 O3 ~1 K8 O; X& o% i( V/ ~; Y% e- i
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ t8 ~: C  X' f* M8 i" z1 d! c9 ~- J3 G4 b& P4 w
4 I7 ]. g1 L2 u+ ]5 w' F
end
3 [; z0 V$ P# ?" C
% J: D: U5 L- B2 Ito update-credibility-ijl / [/ R$ k8 _" s1 u- c* x

' E/ l: e" Q# P9 K4 m9 j;;
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。
- g* ^  U. }- Glet l 0
0 D; v+ A9 i+ H5 i  K/ `1 Awhile[ l < people ]: s1 s; f) ~3 x$ G/ [- X8 {8 |* 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" L; a3 p1 j* W4 l
[
, c( E1 C! A! D$ klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" Z% d# R$ N' t% oif (trade-record-one-j-l-len > 3)
: K: P" `0 c8 C. r( {[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
# ?" g& m9 p+ U7 Tlet i 3
# K/ Q* }5 o9 Hlet sum-time 0( c$ x, x/ l  Z
while[i < trade-record-one-len]
1 u: R  D+ U2 g. H1 P8 R, S[
2 {, g; Y* K7 X6 A) e( E- p5 Fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, F% T( B, q$ w9 o8 qset i/ Z% ]5 W7 Z- }1 e
( i + 1)
: h9 b; R" e! {$ u! b7 c
]
% Q, L4 [, q# Y" n" Z) \let credibility-i-j-l 0
( t; f/ u; f7 \( B' ~: Q+ O;;i
评价(jjl的评价)& w+ P% J) ~( p7 R& d; |
let j 31 M8 `8 z8 ~" e! G/ B4 B- i0 A/ l
let k 4
1 w# h& S5 g0 n  nwhile[j < trade-record-one-len]+ O0 b* G  O5 |: |7 ~/ R
[
+ h/ {. U) p$ I, C$ nwhile [((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+ B1 f. Y5 }5 D" f
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)
' g9 k2 L- O( g6 a$ i5 L  Lset j1 w& Z" S4 `7 q' r
( j + 1)
1 i5 r" {. C3 Q6 M. ]4 |$ R
]
+ B0 ^' P0 b( b* O3 l1 q  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 ))$ A8 k" k% `) i5 z

3 ^/ ?( Z! _: d2 N

2 \' F3 d7 N( `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% y4 N* E  k- o;;
及时更新il的评价质量的评价, W8 Z& ]; _% k8 w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- B/ W8 O7 A9 Q' ]& n" _! l
set l (l + 1)
3 W; s6 I* h1 c2 `$ c* y. R' g]- C; r$ W, G' ~3 s& f/ {
end* R7 ]+ b& X0 ^0 ~

( D  B% v! }2 f- Z' G+ P* @+ l. vto update-credibility-list- m- Y3 |* q0 y3 n$ W& c+ V1 {
let i 04 t, o2 U: q2 F) X1 [2 U0 B; u# u
while[i < people]! c$ d0 i3 O" \! I* |
[& Z( u5 t( E+ I" W* p( }
let j 0
9 A' o* w3 I0 l" ~let note 0
+ s& ^, U" n# d3 s; Q/ h$ O7 }) \let k 0+ j. H; F5 E; j, s
;;
计作出过评价的邻居节点的数目2 b/ }; L! a& M( ]/ g/ r
while[j < people]
! l$ h# I. {7 A7 a* \[
% ~8 |  ]* F! r3 pif (item j( [credibility] of turtle (i + 1)) != -1)
/ |2 K: P! K- V+ i( b;;
判断是否给本turtle的评价质量做出过评价的节点
$ R$ J5 j" [: R. e/ \0 S  N  I[set note (note + item j ([credibility]of turtle (i + 1)))
2 M4 Y' k% Z" E/ ?+ ];;*(exp (-(people - 2)))/(people - 2))]

3 ^/ ?6 B6 _- d* @* ]3 dset k (k + 1)
( N# E, u* J: @3 T]
6 r/ q, J8 O9 c1 O, A. {set j (j + 1)
* Y* I1 N/ U# {% N7 ^1 w]5 S% K  X& R3 e- G6 W$ _6 C
set note (note *(exp (- (1 / k)))/ k). d: l8 l/ d" ~6 w4 n
set credibility-list (replace-item i credibility-list note)
  O4 K+ R' h, b# F/ q7 V" nset i (i + 1)
* E2 D6 g$ ?; X7 D2 B6 X]
/ O2 N5 H/ _# s% {) \' K, E) Send7 q  G& N' T" c+ i, p

1 S1 _* W6 Q7 [2 X% I0 V' ^to update-global-reputation-list
% M4 [8 y# w$ ~* Llet j 0
# s( E2 L% a0 C3 X6 ?8 Pwhile[j < people]
0 _$ e* \, T, q8 G9 B4 C[
6 b; E2 g  I  w; `& V2 v) J# Xlet new 0/ a0 j6 E% M/ x) N6 K+ ]; r( C
;;
暂存新的一个全局声誉
" v! }; F% b7 f. ?9 g5 W) a! nlet i 0
# ^- y' q; k$ A: M. f  Glet sum-money 0% T: `  S5 y: N/ Q2 d& X
let credibility-money 0
* K9 b' h6 |0 jwhile [i < people]! O4 I# ?0 h8 X
[
$ U5 n- V- k2 C0 Y! U# |set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) A0 Q* x+ \3 j- o% H, `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), z$ P4 H9 K% y4 m* L
set i (i + 1)! V9 P- @6 Y7 O. W4 _; g
]9 l7 x/ }2 }/ T/ O- `8 Q5 S- c
let k 01 D" t6 \7 K* q* D1 v
let new1 0
6 r4 h4 Y- n' U% Y' lwhile [k < people]
5 ^/ \' z6 i4 [: C( k[9 e- X2 G: {3 e8 i) f+ K. 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)2 i+ T) A3 |& l0 d9 _
set k (k + 1)% @9 m3 S/ k+ |* z
]
6 T. Q2 S1 E1 C0 b: qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / t, B6 _4 e; g& G( L9 Y
set global-reputation-list (replace-item j global-reputation-list new): ?# S7 E4 ]7 t6 F3 J! c
set j (j + 1)
1 l/ j) J' S5 t# D]
0 e- u6 H; C7 \end
! G0 Y. n& N3 C0 T/ r
  u; c: c% e/ Z- Y7 o& i0 z* R1 N1 w2 t5 K- K$ S6 `, a

: u; ]; w5 X) C2 }. D* dto get-color1 W1 o& c% e2 C% S! x3 P
0 v( ?6 W  u0 J6 \8 |3 n
set color blue
7 c& F! j. D# D. L: F" V/ w2 @
end  o: A! W; N$ f9 |

7 U# q; E6 \  A6 b, D* gto poll-class
# N" {% y5 _4 U% T2 O+ S: ]end
0 @7 A6 K: a; L7 D$ u' l4 L' f( |9 r/ c& |: {
to setup-plot1
, Y. E4 C' E+ p( B0 C! {
: x0 D3 R1 p7 O9 F; r2 ]set-current-plot "Trends-of-Local-reputation"
8 U  K5 u8 K& F- t& L# h8 P% g
4 E" J& c( d3 _7 l7 M; W3 @
set-plot-x-range 0 xmax

1 P+ T* e3 S5 L& F# F1 W1 s* Z4 _; l) g$ |
set-plot-y-range 0.0 ymax
( e! }3 n6 x. @- T9 [8 E8 }7 K
end8 }9 S! u: i# h1 {2 _" g
2 H* M0 p1 p, o' F5 B5 }
to setup-plot2
$ W( a  \9 y5 K1 ]) ~4 ~/ x0 D" x, l4 t8 o# l
set-current-plot "Trends-of-global-reputation"
1 f5 a; M& R% _3 c) @4 k
* q- x& Z' z2 J( E' W& E
set-plot-x-range 0 xmax
' s/ }# B: R% f

; o/ _: v. G: M# F9 Z4 ?# j6 I$ `& Wset-plot-y-range 0.0 ymax
; r$ I# D5 k7 t+ x3 P
end
' M3 U( t* |& Y" o: {1 z, p/ M  {2 {- x7 M( ]
to setup-plot3
" O+ ^: H4 L4 H7 f! A
% ~% h8 l5 \1 l- e6 r8 e8 K' |4 Eset-current-plot "Trends-of-credibility"

3 J! ?2 v" F4 W8 d, r4 {8 g: y( N% {
set-plot-x-range 0 xmax

5 i2 m5 D+ y# `$ m! v# W4 M7 Z- |
+ y4 k5 U9 D9 Pset-plot-y-range 0.0 ymax
" j  r7 I! h+ U' e1 H1 O
end" f0 d- D  F% ^, J. G  E) }
6 Q) b- e, g. r, g3 }5 \
to do-plots
" c$ {6 Q) v6 X& v: X8 Dset-current-plot "Trends-of-Local-reputation"
4 @7 }* x! p1 X! l& A" Y# j: oset-current-plot-pen "Honest service"9 x' `) g" i7 u: r
end: n8 `- T" t. {9 P

3 \0 z- w% T# _4 V6 @[ 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.+ h* ?" t- @+ N7 U
7 }. ]/ L0 C& S% 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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