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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:! O% y' D) P5 O1 z! @" Q
to do-business 0 N9 ?( a; g, X/ B
rt random 360
+ K, r/ J) T/ `, o2 H2 u fd 19 i* P4 L) m" F* u- Z: h
ifelse(other turtles-here != nobody)[
* ]$ x0 n3 F! o! r   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! H" a. U" r8 ?7 W7 m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . z- _( ^" `( b3 }. C4 s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- o$ d! q9 C) ]! |# X' G   set [trade-record-one-len] of self length [trade-record-one] of self6 l0 w! q/ w- i) `
   set trade-record-current( list (timer) (random money-upper-limit))
: t2 `8 N! U1 V9 L4 }& |6 `
; V8 }4 F; d7 d6 b; p2 [+ ]7 N" ^/ I问题的提示如下:
' k7 z6 u9 ]1 J. ]: s5 C
+ T* t+ r9 f" j  r6 d3 j* R: eerror while turtle 50 running OF in procedure DO-BUSINESS7 h! h* a- u4 \- a! H/ _0 j
  called by procedure GO5 Q8 q. O5 X/ H. g. S" f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' V3 F+ J1 f8 v* R2 w7 o
(halted running of go)
) G3 e0 V. E( i( H3 w( M- U- z2 Z2 {( [5 ]3 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~~0 K8 p1 W6 H1 C. A$ A: l
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
6 c2 `  ]! @+ `! C% Cglobals[9 u7 B' I. _0 E) h/ ]; C2 }) q" i- c
xmax
! y) g0 t* V0 F7 I" W" E6 L0 O7 Dymax/ X9 {& L7 |6 e
global-reputation-list( Q( |2 R. H9 L

% M! K  V: M3 d, ?% Q;;
每一个turtle的全局声誉都存在此LIST3 Z  c0 |4 c: L( M
credibility-list) G2 [( H( J7 j$ l0 |+ I
;;
每一个turtle的评价可信度: p5 S0 E% @. X* r. s
honest-service, t2 A* v  R$ x9 y. Z
unhonest-service# R! S  V0 G2 ?5 L; q4 o/ ]) Z
oscillation. v9 l3 h+ G  L, g. `
rand-dynamic/ G- ?6 t2 S( [( P4 S3 T
], E  X  N+ z, n7 _

; m3 u- a9 ?3 ]9 T3 wturtles-own[9 [8 q% h) c: l# d+ `
trade-record-all% p2 e5 x7 F9 A& T) T8 o6 n# y
;;a list of lists,
trade-record-one组成5 w1 R: H' \( \* ~
trade-record-one  \8 Y( i' X" \5 m0 h, K. 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6 B& P- `* b5 `* C

+ K, ]$ q5 \2 ^/ ?7 y;;[
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]]
+ |- S* s" ?2 i6 f# J; Ctrade-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]
5 }" w& O; ^9 \/ k8 Rcredibility-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
: S+ A! ~* e& g; f6 `  oneighbor-total2 Q3 f2 P5 ?3 k* f
;;
记录该turtle的邻居节点的数目# C& O. Z! y6 P# ^
trade-time$ m9 M0 T! V2 _# t+ v
;;
当前发生交易的turtle的交易时间- p9 u0 [' B/ I! C& y
appraise-give
9 j9 {2 w( c. Z: r;;
当前发生交易时给出的评价
! c' R, t1 C* }9 h: h) iappraise-receive* l: X- b0 U- i# X/ [
;;
当前发生交易时收到的评价% x+ v6 X9 Q* v- Z
appraise-time: m" @. E# ]% f! f. e; @/ A) M
;;
当前发生交易时的评价时间
( t/ b: n5 p# i3 jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉. c3 X( Z/ h: K
trade-times-total# C  B$ O% S4 e
;;
与当前turtle的交易总次数
: A* k, z- c& E; htrade-money-total
; k! G6 a3 p, u;;
与当前turtle的交易总金额1 E6 g2 Z6 u# ~) F6 N7 }
local-reputation' q1 z' |2 \: |3 N* R
global-reputation7 E% M. A1 m  [) j
credibility
" Y! @* H( v$ m9 t! o( k% H8 j;;
评价可信度,每次交易后都需要更新$ I8 i+ j5 I! i8 b2 f
credibility-all' n9 M% V- O" I+ j
;;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
1 \' J; f) @: m! y$ V( C  q
4 `: n3 O  L6 ^; 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
: u4 L% v3 W& Mcredibility-one
" V' H$ s7 c& O: e3 n;;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
$ J. J( J5 e6 v% G% `( Iglobal-proportion
% n; z+ b6 B) }2 ^customer
4 S2 t# b7 D& S1 |9 {$ `3 @customer-no' U( L+ a* A2 O0 H# s  `
trust-ok. H# J! r1 s0 @; U
trade-record-one-len;;trade-record-one的长度3 |: K+ S8 Q* P, G; a, k$ t9 }
]
- n; [  m5 \( A% j* l
& I" |+ d& N3 j$ M/ w9 u) O;;setup procedure' c4 H3 R7 O+ D5 E4 M: u6 U9 g
5 e" ~6 [1 d5 b+ p8 c
to setup
8 [$ {; e' |7 ^+ Q
3 J! O1 x, p1 Y5 k/ ^  _ca
, L3 U  b9 E8 ~4 A
+ k/ J+ \- G1 ^
initialize-settings
7 q: |$ D" X- C1 b; N9 P
& V/ b. ?: }) E3 H5 h9 T
crt people [setup-turtles]

) l6 u: i+ J# q  ]+ K7 Z0 C
. y' P* z4 v4 }: J2 g2 i4 S" Ireset-timer
+ D3 U% s+ z0 m& T6 Q& H* M% S7 N/ g

& P, i* j& v# e6 o6 J: xpoll-class

1 s& e' }8 |" \- W$ z8 J5 A1 M0 S( h' ~. s) M! G; L& [5 v
setup-plots

0 a; N6 X/ ]) J, t4 a- t5 K: m, E8 e) Z: r3 Q3 }2 w
do-plots
8 k% b8 n1 V" v4 z+ d( Y5 J
end" s" {, \8 N( j( g/ O+ G1 A: P# }( u
; D. r4 \" E; @, U( ]/ i) T6 E
to initialize-settings: e0 L* s/ n% S" O0 E

' Z6 g; R) w# `5 R# _3 Xset global-reputation-list []
8 R& c' ~6 ]4 I0 |1 C
/ ?* w! Z+ V6 t/ ~8 W9 a& G
set credibility-list n-values people [0.5]
0 v8 G1 x/ k6 n4 H1 ]/ w

1 E9 ^6 \. q  I) V9 rset honest-service 0

, U2 k  N9 z- [6 H% }
/ _, q3 ^# z- {0 Wset unhonest-service 0

  C) y# H+ U/ r+ O/ j) u  W; N1 K6 x! }8 t
set oscillation 0

0 f+ a1 J9 t: Q  @* m: B/ S4 W  \4 o0 ^3 }3 a# e
set rand-dynamic 0

6 ~; E$ ]0 r5 X1 H7 i5 c/ kend
4 @1 q9 _$ V. K) K: Y, k: i# p7 u- Q! Q3 t; c
to setup-turtles
9 O; D3 Q5 _- q! w- T' O  Mset shape "person"
* o, z) y$ A" v! r: h9 i) f8 Gsetxy random-xcor random-ycor$ {  v! J3 i* E3 Z5 I
set trade-record-one []
; Q8 w1 N. T; q4 y
6 X' [% `. Y# ^9 v/ ~  D8 g$ d
set trade-record-all n-values people [(list (? + 1) 0 0)]
. j$ y  w0 V1 q8 j. |$ P! ]

9 H* `) A+ W$ q6 _set trade-record-current []% F6 J  V) c% p- i. s( h
set credibility-receive []7 W5 l; I8 Z" S
set local-reputation 0.5* h, v9 s; H5 b" \9 g) E- I
set neighbor-total 0
: r- h1 Z2 s) Z' \# D2 fset trade-times-total 0* R, H% z& U. {
set trade-money-total 0
% \' R5 E2 G3 }set customer nobody4 r. v) Q/ t- ~: z
set credibility-all n-values people [creat-credibility]
) C2 F1 Q. X7 P! d: @0 Tset credibility n-values people [-1]
8 ]# t1 a! J+ ^6 c6 {5 Wget-color) c% {6 {* t4 ?, }; Y' Q
* ~$ ~+ c  e0 Z2 X9 H- P- e1 P: X+ h
end
% A1 h+ v1 M/ P8 U
5 Y0 E' N% J, L/ Vto-report creat-credibility
2 M3 Z: y2 d/ A% S* ~4 e) r7 \# q. T$ F$ dreport n-values people [0.5]
' y2 Y% v4 G7 p( L1 Tend
3 N* R: O0 F1 r- f9 d+ I2 h( b' b
to setup-plots) I) z8 Q  T. p3 [; t7 H& B

3 [3 w, C0 p0 r7 G3 Z* q+ F: Oset xmax 30

* j) O/ i; ~7 N% x7 _4 \$ Z0 l) q$ i* Y4 l
set ymax 1.0
. v8 T, \$ i% M9 A# B

( e  T; L7 @% r; gclear-all-plots

* r/ [7 N; s6 Y6 H# e8 f6 L% V: J* |0 b9 }3 _- |4 J
setup-plot1
3 K0 E4 a+ Y$ o4 c; ^- q

5 l. X2 b$ K2 d# V) lsetup-plot2
/ I7 M8 S! {, n
# R& A% H0 B' E8 a4 E
setup-plot3

( V+ O) e$ k+ l8 tend; L8 F$ E* i* j
+ o. w; m, z5 I1 `3 k3 ~( {" R9 u
;;run time procedures
# r7 Z" X  Z6 x( [/ n4 d
- C; A3 A5 \. X! L( O7 e# R, jto go) J" F* `( V+ F* t, ^

0 B. u. a) u3 L: P2 Pask turtles [do-business]
. {/ U  `% S6 n( f+ @2 @* K
end) H4 ~/ q7 |, U( {8 o/ g8 C
  |: V8 f0 j" {
to do-business % o- L8 [3 p' p3 i, _

$ @2 w! s5 x, N% {' K
6 W! `: R* {9 [* krt random 360

; P# u# _" a, u% w7 B$ W) J/ {) M5 l
fd 1

1 T; ^/ u  C' o; f" o% o- v
# b% c4 {9 N2 i9 I' Iifelse(other turtles-here != nobody)[

4 Q+ ?% ]5 \0 |) I" X) S4 E  w- _3 P1 m  @) d. O
set customer one-of other turtles-here
( }! M  f- H9 R0 p. V

3 z; {9 t7 E& M7 s! Z9 [& |' a;; set [customer] of customer myself

  b1 O" W# E+ q3 Y' O- B
0 j& w# h6 P0 m- Nset [trade-record-one] of self item (([who] of customer) - 1)
8 B) Q) E% v: {3 d  F& l# I[trade-record-all]of self
; y! |8 s+ y9 A# v/ v;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# d' ~! G% H" L+ K
6 M% D6 i- \+ s: x0 X1 h- _  Cset [trade-record-one] of customer item (([who] of self) - 1)
; x) [6 d5 J7 l3 h$ K. g2 o. y" l[trade-record-all]of customer
$ ^2 E4 h$ G- r4 g

* N6 N2 K) `7 S$ n+ u6 a3 Iset [trade-record-one-len] of self length [trade-record-one] of self
+ \/ D' U# w" u2 k; a
( p. m0 N" e" Q8 m9 m
set trade-record-current( list (timer) (random money-upper-limit))

8 R* Q' U& q. j& i+ U3 _
5 }2 \+ q: D+ N! v; C( \( _% }ask self [do-trust]
* v7 ^! g" C8 Q" o% ~* `* @;;
先求ij的信任度
. a- E/ D5 ^1 h& e
" @0 X6 ~+ }0 Z6 K$ oif ([trust-ok] of self)
" d" _3 I5 ~; T5 F9 R: F$ c5 H; ^* k; u;;
根据ij的信任度来决定是否与j进行交易[
' p1 g' w' d. I2 u) ]: _4 Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( F8 h3 Z3 G) E& n( }6 O" a( s
* w: v/ l' e# k1 k. u
[
7 N* c! f* D% g0 H0 y
. h1 e7 g& r& O1 e
do-trade

8 V; @' q% i& Q
4 q3 K8 R( i! L. e% y. ]: lupdate-credibility-ijl

2 z- x- ^/ W/ `$ G6 [  X2 \! X: J1 E0 _* [) x5 k
update-credibility-list
- E, w* |* ~! u" Z  Q
2 |' a6 s% n; ?# z

7 ?+ J' Y, [) q4 J, _5 V7 Nupdate-global-reputation-list

: L* q8 y) X0 U1 ?) \9 X
! J, G# s# E% I/ E4 p% i- Wpoll-class
9 |4 y- q5 I+ v- `, K8 a2 M5 y
1 X4 h8 p$ p# b" [; K
get-color

! D  \4 }. S# ^7 C( y3 k7 U
! A; Y9 I& e* n5 z$ \. w. R( X]]8 B( m/ H# L7 q& E
2 _- K8 S& `! p( r" y9 g+ k
;;
如果所得的信任度满足条件,则进行交易
7 d4 z6 _/ t, }0 @3 v% x% b$ Y
4 T6 x" b0 ^3 m# _1 i  Z[

% d) o& E( x# \0 r# Q; F: B- K- A; B- E4 w' s
rt random 360

2 M  q# S0 a1 {# H  z) z1 k1 V4 A) Q4 x
fd 1

& c* v1 d7 j9 L. i# ^' U/ _/ R! q8 o. [  I/ B- Y5 b
]
# l; H$ ]1 Z' K  g" P/ Z: [4 q

# j% ?! s9 _2 q% Q- K4 S3 `end
* Y/ _! i0 i4 L- U$ h- p
3 \' k  S9 `" T6 m& ?/ q9 |
to do-trust , {2 L* R' [6 }0 ~: a, U; F+ {
set trust-ok False+ o' E) A% @+ {/ U2 i8 k' z3 z. [
5 P& G0 s2 u& v3 q) f& v* X
% J9 }0 S+ x* @( ]2 H$ F
let max-trade-times 05 N% H9 J* {6 t# C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 n, G- q* d# w1 C! H6 C: F
let max-trade-money 0
/ B1 V) \5 I/ `) b2 _6 Z  Mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ `. b- F. f' \- t  B! S3 s# N
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 N: S) Y8 ~& Q, a  U  R
) c& t0 T8 K& M
& Y" m( Z; M6 X: K9 F3 b
get-global-proportion
) F# L, R9 W/ Z; p9 a, Blet trust-value' v" l1 S" |& L$ p1 W4 o' ]# W% I
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)

# ]* a+ p# C9 p5 b2 @& n2 m; G- Eif(trust-value > trade-trust-value)
6 \# S) \3 F; O( z4 }[set trust-ok true]" q! m6 H: F# Q: Z
end
$ s, R8 S4 Z: M; n2 B: b% ?9 ~0 c3 K/ E, i: v! d
to get-global-proportion
! H2 J/ a9 b  P) z  `6 }% Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# P# D7 ^8 }1 O( M* W4 M
[set global-proportion 0]
' T. i3 U# x( G7 A( v. e6 G* C! h[let i 0
+ {0 Q1 m( {. f$ \; Nlet sum-money 0! Q2 t6 ^0 `$ {8 Z
while[ i < people]
% o7 P9 c3 `/ n+ Q5 ^8 ?[8 Y  _1 g3 m) r! M3 k' z$ Y
if( length (item i8 u4 P7 [" t( Z7 V, k
[trade-record-all] of customer) > 3 )

7 u) F9 y. s! k  D[
" o  b2 P% y3 B" l! Uset sum-money (sum-money + item 2(item i [trade-record-all] of myself)). x8 u- J# w" A8 _8 a; H' x$ M
]; d  m; w& G3 H, A: H
]) R# B) Z" R& o) {0 \. N
let j 0
- Z% z( l) j5 G* V" [. P- U- `1 v3 Alet note 0
) e& c+ Z! a$ s0 G& t) e: b9 N/ twhile[ j < people]
/ _& ^* G, ?0 l% G# y+ T( p0 G[
8 q. g6 ]2 H% c9 W; i& Zif( length (item i8 z& M* _4 h1 R8 r7 V4 _. S1 `/ u
[trade-record-all] of customer) > 3 )

  ?, {% n6 H' w" p$ P# i( F+ @  c[5 o5 p( m0 A/ \& m/ h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' E, A* O2 |8 \* y* W* ?( T: E( S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! A1 `. D/ N- G, s) V/ X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& \: D" p& F& G5 `% f5 U3 s]
' d) |1 m! N8 R3 Y: x  Q! d3 r]; F6 N( p7 I1 Y* t
set global-proportion note
" r- ?- l$ E  f: U% I]8 z! Q# }+ ?0 c0 F1 k
end
2 q' X+ L/ z0 M' R' o$ I, U3 ?2 e; |3 U9 L, }1 b5 ?
to do-trade
5 L) w, }" Y3 v2 ^+ l;;
这个过程实际上是给双方作出评价的过程# M9 ]: @0 X6 a. e0 y+ C8 M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& h" L  x8 L& W' }- t/ w; H8 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 I, K. n) v1 d; U  j+ G
set trade-record-current lput(timer) trade-record-current; F1 I2 M: c/ l6 G8 R$ v" ?
;;
评价时间
2 a5 ]" f$ c% j/ Jask myself [, K' d1 r2 B4 o- d6 {8 M& U8 J" _' e/ A& W
update-local-reputation
: x1 I$ M6 e6 t" ?0 j7 wset trade-record-current lput([local-reputation] of myself) trade-record-current  O. t! P1 y: D
]! \! E2 n$ ?- z# r. s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: ~, _  ]; R* o' h6 q4 B" _;;
将此次交易的记录加入到trade-record-one
3 ~/ G( P0 U3 Z6 ?/ e3 o, }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" }5 ~4 l" `& Y3 F' M: K
let note (item 2 trade-record-current )
7 t& \. Q$ Z0 M! f' Gset trade-record-current
2 C" Z4 o4 Y* ?0 Y0 ?(replace-item 2 trade-record-current (item 3 trade-record-current))
1 R1 g* d1 M3 U' e7 ~
set trade-record-current; _: ^* f9 x: m% L5 S$ P
(replace-item 3 trade-record-current note)
/ l9 g0 w3 N, ?# W" J* g) q
' g0 o' W+ m8 S6 ^  g
; a) I) {/ }0 c3 T) D
ask customer [
# e2 P( `6 Z# \/ K% fupdate-local-reputation$ Y; _/ @9 I% M0 U2 T; e0 u3 x
set trade-record-current2 n) b  B; M, r' Y# U# i% @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* E" q4 b4 `9 s+ J( X! N4 h# a
]% P+ O- }& V( [6 k# b
# U* o/ Y8 ?' X* \) z" x3 D

' M8 K$ V0 Q8 |! lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 {7 C1 n5 m3 Y: s9 Z) t% m$ k) w
: f, z% h) h& o
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 n8 w7 a' A5 L/ }
;;
将此次交易的记录加入到customertrade-record-all
5 _# N; `" A4 ?+ h7 Bend4 ]' ~' G: H9 Z: Y8 R' o

+ R  ~* X0 G& y. F# Zto update-local-reputation0 X% r( r9 M5 J
set [trade-record-one-len] of myself length [trade-record-one] of myself
3 g9 R  f, _$ p6 b
, `/ I, y7 M/ n" D8 r
( T' u& G3 }9 s; }' c;;if [trade-record-one-len] of myself > 3
# Q& u  G2 v4 ^. E; p6 }4 n# ~( c
update-neighbor-total6 ]0 B- B- f- q8 s4 L* j
;;
更新邻居节点的数目,在此进行7 G6 ?6 R! W1 _' \
let i 3' C) D% g$ r  S1 d) k' ^+ J
let sum-time 0. G: P" I3 k' v/ U" h. P" w: I0 c
while[i < [trade-record-one-len] of myself]
& R4 @# ^' Z/ C  U1 \  s1 p[
6 J, x3 B5 p$ z% c, J3 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 ~9 Z( z% J% _$ Wset i$ G: S2 g( H8 m4 }
( i + 1)
9 {7 Y( i8 b2 ?. b( z. n! g
]. S2 h! C, Y! q% i
let j 3: e( W  q# t" p3 ^
let sum-money 00 X; L! |0 e9 K; U
while[j < [trade-record-one-len] of myself]
" t. a2 L' q1 P% z& ^3 n$ @5 e, R  H$ n[& w% @5 K- ]# n) `' m. ?& ~( i) r
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)
$ S# y6 c) ~( ^4 E: s4 g1 {set j, w; m" ~( p' D  c, f4 \+ w
( j + 1)
6 U# Y9 F/ v5 v. T' `# T
]! S! T$ k; D% j3 f* d% ^* s
let k 3% @. ?5 s5 k" G
let power 0
, ?% p  ?# ^8 ?let local 0
8 I* d4 l9 c+ u) t4 @: Z8 D/ C- Twhile [k <[trade-record-one-len] of myself]
. h' ]+ o$ J; a, ]& W/ l+ X[
+ Q$ _% |" X4 bset 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) ! ~: ]+ g9 |9 Y) L$ b" v1 Z
set k (k + 1)3 M+ H. ~* `' c) p& N4 m7 G6 I
]
- N- ]/ a+ k, \# \set [local-reputation] of myself (local)
4 \; k; y- M! U9 ]) Kend: i: R( i7 B, a/ i: n# l

* P! c. l3 L7 k$ Q2 oto update-neighbor-total
  f1 {! a' ]4 `+ |0 J9 f# X9 d4 w3 \( U- A" O8 s( h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 m) o% A6 Y. j" R3 T( q
* q" c$ z) f# t$ H0 i, O2 d

: L5 T% F4 i: u" m/ u9 Z( B6 @3 vend
; _. J9 @5 ^/ x: C9 w1 V+ C
& `- M4 `9 z* {! A& eto update-credibility-ijl
- l' Z9 m2 j2 T2 P6 b+ l3 ^" X! b3 [) e/ u, b0 C
;;
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。, Q- n8 h2 T4 u. `+ t
let l 01 u4 f. O* R( p( L
while[ l < people ]
& E4 ?. P2 w$ Q/ 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
1 q5 d; g3 \, h% C[
. }7 @8 ?3 b& x0 olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% s0 D  W: c4 G' U; j7 d* \9 jif (trade-record-one-j-l-len > 3)1 T7 l, I3 A) A6 S( ?# M2 J
[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
, n% n4 j. o- z- g2 ~6 n& S) slet i 3& B# i! Y* u7 x+ X
let sum-time 08 n7 r( b: M0 w4 X2 f* `
while[i < trade-record-one-len]
' \$ s& Q* Z0 V1 M/ r[7 X8 [( V4 \. F1 q5 B, L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 G. h. S6 c) M- P; C  Z: \1 a
set i4 K+ r% r6 C" m6 _; }
( i + 1)
# f# W  @; T' [: M5 ~8 ~
]
# ~! ?, G: B5 x$ [" A) N& Llet credibility-i-j-l 0
. n  t; a( V) m2 I$ M/ \;;i
评价(jjl的评价)
; w0 }" {, y: l7 _, Q# h- ]4 Q7 Jlet j 3$ G3 X' p! [8 {; \; m7 w4 ?
let k 4* m& B) K) b4 z6 s; {6 t
while[j < trade-record-one-len]
. g- C# q! M3 w# C( I[
3 _7 O8 g0 G" V4 @2 l" Ewhile [((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
8 S0 O' S' Y& |3 i1 I: R1 W" oset 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)
( a# Q# i0 u+ ?& q" U& {set j3 j, a3 N/ k& }2 c* Z5 i1 Y/ {. G
( j + 1)
5 g/ [& R9 p8 l4 |0 g' N
]
2 R% I- o  o2 u& P1 L/ @. x$ ]8 J# L9 Eset [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 ))
, g/ h$ }1 J0 \
/ U4 B2 |0 Z' z9 I+ D8 K$ k

2 z5 `5 q/ P/ x) J+ c% rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 j4 B' j: I7 a- E2 V  f/ {5 R
;;
及时更新il的评价质量的评价
9 O1 n# w  E" c( U' a/ qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& }3 N0 Q, v$ d3 U6 K# x( V. Z& v# D
set l (l + 1)
/ q: V& i1 B2 P2 ?]
  u" p4 V. l( Hend
$ Z5 t4 v, Q5 k- l% Q0 l2 ]' H& j( y
to update-credibility-list. o; b8 j* I; j' O
let i 0+ A. r9 V' J) \, \' g7 y
while[i < people]
8 _) i/ C0 K+ X1 ^( M[: Y" a8 U$ Q5 S
let j 0$ q) _7 k! a- ?/ V7 }
let note 0
  W2 D1 V- p' T  T" N: ?let k 0
% h+ v+ \1 G# @+ [+ v2 s;;
计作出过评价的邻居节点的数目
# K# B1 K7 @- }) J& F7 j# v# swhile[j < people]
% S* z6 ]3 o& x4 m) z  o[2 M+ U/ l. Z% b) y
if (item j( [credibility] of turtle (i + 1)) != -1)) o0 E6 Y& _, V, A2 c0 N2 s
;;
判断是否给本turtle的评价质量做出过评价的节点
& o& o9 I2 O6 ^/ n2 E: J[set note (note + item j ([credibility]of turtle (i + 1)))
: F( E; K9 H& M8 A+ A6 Y- ]3 g;;*(exp (-(people - 2)))/(people - 2))]
0 G9 k2 C( y* H
set k (k + 1)& P# P; N; `) D! X  d3 _8 q
]. p: K- t3 d! l6 {7 A5 H# W
set j (j + 1)3 j$ ~& A: e7 F* O  e
]
6 u: I, Z5 n3 R: Sset note (note *(exp (- (1 / k)))/ k)
7 N, S: W2 y! W9 tset credibility-list (replace-item i credibility-list note): r. Y/ G, P$ |  {
set i (i + 1)
3 Q; F2 X: k5 M]6 n/ B$ m/ H2 S8 t
end0 G+ h8 r: M6 H# l* y

9 H, @  R2 r- K9 i- f0 Ito update-global-reputation-list7 `1 C6 S" n/ T/ N
let j 0
# V5 h0 @2 g# ^! V! ?, vwhile[j < people]: @. F) @2 D) Q4 E1 v+ @
[
% Z6 F* i% p+ A: B, q" Olet new 0, m3 r& c/ E) u. T6 ^+ Z: X
;;
暂存新的一个全局声誉# v# G. V$ G3 x% k4 p5 ?- h
let i 0: n1 l* o& r& [. F
let sum-money 03 S' G; X7 s" b$ E
let credibility-money 0# u; D; C% Q" X
while [i < people]
- K: ~  R7 }" E  G' r- T. W+ ^; O3 k[
- H. U; o* T% L, \1 N1 V5 gset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ M2 M/ k! \; i9 @' f/ @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# l9 a3 `5 S9 ]" C6 K
set i (i + 1)
% [6 d& b$ a* f9 `& S/ _]& D8 t- L- }+ k0 u- A  A' U
let k 0
# S$ F. b& y# q3 [* B8 `3 ~let new1 0/ f) e' O; E  d; _, t2 x1 V7 T# ^: \
while [k < people]
. w1 Z, h$ Y$ B) M& t* J  d/ y: P[2 ^0 k( Z0 O& t! d- ]
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)
* |8 d2 Z7 K. {3 l  P9 ~set k (k + 1), A: A& |9 W9 ?; H. g1 g- G
]3 Z6 K& @% m9 [# \8 O" \' p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! s, N1 {' N/ D4 \set global-reputation-list (replace-item j global-reputation-list new)# Y& E1 ?6 k' |( u- z( L9 \5 ~+ V
set j (j + 1)2 I; D& X" H3 Q; K6 ^0 |
]
+ ]; ~- b, \( r6 _4 V  bend
. Z9 r! E& d* c" D  V8 L
2 E  Z% L  x0 t1 {
3 R; B8 ?+ i, @% _' p: ~
7 x+ P5 |( y- w% q2 Tto get-color
9 i& v7 C. p& J; w" i
) ^) c4 q& s2 l( E) A+ zset color blue
0 z; g+ C) \: N: E. ^* B
end/ h. ^1 B( ~- a) P% [! b
$ R2 R0 U' i) {
to poll-class( {8 R% F* L8 A, ^+ _( h& F
end
6 e# F$ u! I. V  f7 I
7 N4 \5 @# A; O5 tto setup-plot1& `$ `- N: q, g3 e( |9 m
. C& f4 Y) e+ Z) K  F* l
set-current-plot "Trends-of-Local-reputation"

. N+ Z# R) Z) d3 j6 V- C2 V- }! W
set-plot-x-range 0 xmax
& ^1 K% W* j; g( K7 k
7 G* u: ^) V( t: G
set-plot-y-range 0.0 ymax
& }; n2 h3 y9 g- n- C
end
* i% r9 ?1 Z7 Q8 D# I
* Q% f3 S- ^( k* sto setup-plot2, l' Q- {5 X. B' x
# E( M- W6 Q+ b  f
set-current-plot "Trends-of-global-reputation"

* @, g5 n. j/ \$ a9 A. H
" Z1 v% e+ J4 _, s1 w! j8 ]set-plot-x-range 0 xmax
: C: C' i+ Y4 B, i' h$ t

: `! [6 x7 w3 ~, J- nset-plot-y-range 0.0 ymax
6 M, U( q( t: P8 _
end& D% g8 [4 Q% C/ c: I

" O9 ~! Y! g2 T8 d# _) z9 ~to setup-plot36 ]  I* y* C: I- b7 o2 M

$ l3 ^  c7 q* y/ kset-current-plot "Trends-of-credibility"

, i+ G, ~6 ^1 [: b
1 }& N. ?$ @, z5 `0 Y) W0 Q6 uset-plot-x-range 0 xmax
8 d6 I* M( I# U# i! z" d: Y. K

! K2 s, w+ \8 A2 ?$ k/ {5 ]# _set-plot-y-range 0.0 ymax

0 b' y) P. d( K' W! W- aend
3 V2 S$ ^0 r) X7 l4 J% t0 ~' T! q5 g7 U, M
to do-plots5 x5 B4 N, G) W  Z4 {* h
set-current-plot "Trends-of-Local-reputation"
2 i& e3 N$ e9 ?/ D; C$ {/ M; Kset-current-plot-pen "Honest service", ~% B9 z, h3 g& \" ^
end
. ?; L1 |  |7 w% s: @  [+ q+ X& o, `+ W; n
[ 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.* {; L- @  c. _, J" f' _2 R1 C0 s/ t
" A8 a3 [$ j9 r( u7 w9 @9 R
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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