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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:" B( Y/ B/ B9 N3 `6 X, n6 J$ A
to do-business " R0 a+ E8 |* U$ L( j, w+ }5 e
rt random 360. a" Z, v3 G" {! j$ R4 q
fd 1# Y* _' T4 O- e9 R, q$ G0 J
ifelse(other turtles-here != nobody)[
+ s+ N0 J! b7 `5 {- f5 [   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.
0 A7 H' E+ W, m$ m  I   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 ]6 f- }7 ]% E2 v   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) F) n1 c$ v5 N% R- I   set [trade-record-one-len] of self length [trade-record-one] of self
" P; ?# I2 ~, }   set trade-record-current( list (timer) (random money-upper-limit))
$ X2 C' L2 N6 a7 \4 E1 G. g) {% M8 \2 A( D
问题的提示如下:
' a) Q. O& Q0 E. m
9 D9 q. m& D1 a0 ~$ aerror while turtle 50 running OF in procedure DO-BUSINESS4 r4 g# [; d- u; Z3 l' s" A. p
  called by procedure GO
8 m* x" X: T2 S7 {/ eOF expected input to be a turtle agentset or turtle but got NOBODY instead.- x; x6 T" c, C2 d) h0 m7 \
(halted running of go)3 K5 W- F' q( v9 c0 ^+ {

* r  ], n, {) }; Z( X. ]. W) D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~~
/ M; Z8 h" i6 e# ]. [7 c+ C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
7 V- {8 Z, G7 ]globals[
$ \" D1 X* U; O( axmax0 S/ o8 u1 c6 F  {& Q4 a; y
ymax
+ P/ Z0 S4 G8 Bglobal-reputation-list
( c# W, g& {+ M0 q
' ?6 j7 `- P; R% t0 q;;
每一个turtle的全局声誉都存在此LIST
: q* z$ i! m3 m' M! C+ ~- ycredibility-list9 W1 w$ s: _- Q
;;
每一个turtle的评价可信度
2 G7 i2 ?1 Z7 x& P: e! x6 Qhonest-service4 Z0 Q1 f2 \* T" h3 b
unhonest-service. r  T2 G/ e# n. n* ]. j& c
oscillation1 v0 Y5 X. E& S
rand-dynamic! B7 S  ~3 k7 v/ s  ^  T$ u, o7 t
]
. e5 G' P+ _$ P+ Z0 F7 P) B0 Z: ], d! L6 ?, m) e
turtles-own[
5 x. d8 R# a/ J0 C+ B2 l& Gtrade-record-all
& c! q. \  M/ Z- a8 R  [, t;;a list of lists,
trade-record-one组成* a# O: g1 L2 f5 e# l1 p
trade-record-one( z  e/ E3 w& d
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' I3 D4 }' x: z1 ?1 K$ ~+ \5 q! W$ X" N2 @6 r: 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]]* a6 b& h; Z3 C  e
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]
5 x0 S6 \$ z1 C# Ncredibility-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
. Q4 G0 V0 O# Q( Lneighbor-total
+ n, u: X4 L/ _, [) g- d* b) u6 \;;
记录该turtle的邻居节点的数目
. `6 y) y+ j) v5 t, Btrade-time
0 t  C$ a; b5 s6 m' j, H! D- D% n* `;;
当前发生交易的turtle的交易时间
2 q% g0 C) ~! v7 O9 M: y* K# \appraise-give  L. U, O  c: w6 @/ H
;;
当前发生交易时给出的评价4 v4 W! V6 U0 j0 w, C6 r8 e5 n4 {
appraise-receive% Z3 w* o- z* I: C* `$ ~3 @! p
;;
当前发生交易时收到的评价- K& i6 d% i: {  _
appraise-time0 c/ t' _9 \- r; F$ A9 [7 e
;;
当前发生交易时的评价时间7 f6 C: r6 @% D) O. a0 U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' g: l1 |  g6 k. D( \+ M/ |. u6 Y' ~trade-times-total
$ g$ Z: z" W( `8 z;;
与当前turtle的交易总次数" j5 k  a3 @, O' P
trade-money-total9 B9 P7 P3 F/ x9 l
;;
与当前turtle的交易总金额0 a. d2 F+ |; g# n/ m
local-reputation9 e, m+ d9 k9 Y# h
global-reputation
. q  d4 G: X/ _% Vcredibility" y5 ^0 ^6 ?" ~
;;
评价可信度,每次交易后都需要更新5 T" N% b- ]  ^( ?! T- W. e# ~
credibility-all1 e& d- C+ x; b. C
;;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
5 M- ?. h9 e6 [: {& x7 X0 t  P, t1 X% u
;;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
* f7 @" T# _" Ncredibility-one
3 ~; h% Q9 R0 g;;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* A* S2 w* T* w6 I; E- y
global-proportion
! x. c6 ~  |: U, {3 J& P) h8 K7 Ncustomer, H7 k$ \8 E* U/ u4 y
customer-no
; {9 w  D& v. t- Q. C* vtrust-ok
1 O/ g, k% m# Z$ `( Utrade-record-one-len;;trade-record-one的长度
& o& `7 N+ x* g- W]- U0 s: h/ b7 ?, [. ~

, m: X* i" _" M% W$ O) Z;;setup procedure
0 T+ F5 B  [, |3 L; k: G3 P0 V& Y* `# }' N
to setup5 \- a- F  D' L- ^/ t# u
: d! ~2 J, t% U+ T5 W& h
ca
( r8 B; l* O5 B3 W
+ S$ D  v- M3 f  T; M; |# q0 B
initialize-settings
3 v4 t- N6 n, h$ u* i  A

0 @& Z! y/ @/ h) X0 |crt people [setup-turtles]
7 k) ~+ Q) U+ T/ M" Q6 A  \& k

( z2 w& o" O# V* {, w7 h+ Greset-timer
& b* Z* w" H' n) w) b6 B

, Y4 L. ~  T/ R; Q& Lpoll-class
6 A7 C  A& N8 y- E
0 v/ J1 U: _7 d2 N
setup-plots
4 j! F+ M' Q! Z$ {& T

* n& Y' a- J! R2 l0 E& Pdo-plots
* {( O6 a* `: e! g+ i% v9 m! B# z; I
end
  }0 m6 W) k. K
- m  Y- v5 _, X' O% g: uto initialize-settings
  [+ }. L. |3 F' v+ q
* h5 D% a2 i$ z0 U( K8 [$ a% [set global-reputation-list []

) p1 h$ r* @* ~' L, P6 N0 M9 e
3 ]$ b* M) G6 i8 e! M  s" n4 h( qset credibility-list n-values people [0.5]

4 q* e; f0 `' V* o# r2 J4 G+ c) m/ V7 l
  B" e' I" K9 C7 Pset honest-service 0
$ F* W- z& S# K
- f; c$ y6 O* O( X
set unhonest-service 0

4 k! e- u2 x  U# x" v6 j
5 A# b; D2 E  f- L: rset oscillation 0

( C& t( L5 l! Y" L8 O0 R+ H# L
7 C" Y, c0 ~6 Y  tset rand-dynamic 0

$ D. s) l) I; T8 F1 X9 Oend4 ~3 b3 l% y, Z( w
' a$ ~9 J6 m6 U+ e. V
to setup-turtles * {+ j3 Y* U9 N6 c+ y
set shape "person"
: O2 Z8 B/ J0 \& g: Ksetxy random-xcor random-ycor
) F$ T! M7 z4 Q9 o+ C! ~: r: \set trade-record-one []
4 E0 T$ w# b9 g$ I

+ s+ a+ Y- U, ]set trade-record-all n-values people [(list (? + 1) 0 0)] 4 J; K# N+ O0 |6 s% y8 R
$ q* y8 Z" S$ f$ S7 z) E% {5 n
set trade-record-current []) F  c: x& O/ Q+ K1 W/ v
set credibility-receive []6 E5 Z3 i: c# x3 y: q) E
set local-reputation 0.5
+ k2 u/ h5 G& K6 S$ O: [+ j9 Jset neighbor-total 07 Z3 E, d8 s# s# R
set trade-times-total 0
- p: i$ A% d" c" t& p1 yset trade-money-total 0( J( K( p( w5 U, y/ h2 b+ ^
set customer nobody
6 m4 O: k. n8 sset credibility-all n-values people [creat-credibility]* l' y4 g, a8 F3 p% G
set credibility n-values people [-1]$ K! e# l2 f( ~$ X0 H* T: Z4 S1 Y
get-color
5 G& x0 l$ ?) s4 {0 N3 d  s

% C0 |# B7 c6 uend* |- v, U8 R& h
' q) I; O4 ^! I$ ?( ]1 X
to-report creat-credibility5 W! A  ]3 t2 f/ w6 ^
report n-values people [0.5]" A2 j: \2 {* ?' B1 ?& K
end- V, U/ Z& G8 ]8 h# d; |
& E: [( m4 p9 V+ ^- g
to setup-plots; e" d" X  {5 N+ W# f1 ]

+ p2 @2 z; b7 D$ @set xmax 30

5 @% M# T2 e' T5 e# ^6 E& f3 M' ]7 R( ~/ E8 O% Z1 D% u0 |* _
set ymax 1.0

! i9 F$ e% Z$ z( n4 W4 [0 s) x' K3 u
clear-all-plots
7 E! N7 v$ X+ {0 i
0 |4 F* ?$ V, c" O& }" T8 k; P
setup-plot1
! F! M5 |- S. x. N

( q' |8 ~: d. `. M3 Q- \! y3 m! Isetup-plot2

+ p9 b" f+ D& U, Y9 t
2 o1 B+ {' c, ^: _setup-plot3
" s# L% u/ e3 _1 _: c
end
* f4 e. a' o; k/ e4 |- W6 ]2 u& `+ o2 {5 E- z& F
;;run time procedures
2 G9 g5 y/ }  M( ?5 @. q+ c4 W, |! V1 {) S- R8 M6 U
to go0 _& H& b7 z4 _* t$ W1 K

8 Q- A& j, |9 _- wask turtles [do-business]

2 s( F- B/ g, L6 [$ \( b- [: L% _end  {1 b; \' [; B7 f7 K
# i& D$ D& m6 Q' d4 x% \; [
to do-business ) s  N! b9 ^1 I6 S* D& k: O% h2 B
% a- X) _2 S+ a$ q( Y2 G: c

$ G+ c; j4 P; y4 m' U) j: I1 qrt random 360

; T" _8 t* K- X/ Q5 X0 A2 k; L7 P1 x3 E
fd 1

, r- H+ M! [9 Y* W% q' V8 F( j6 @7 m, w9 A# t# e
ifelse(other turtles-here != nobody)[

* C, P. X! ]- G. j0 ]
6 q: z- M. b! Lset customer one-of other turtles-here

$ B# C  w% p! x0 l
8 H2 [' a: x- p/ P& K6 ?" Y;; set [customer] of customer myself
$ j& z, x8 [, B2 Y9 o# [! i

1 E* [) R2 q/ s% T8 G" L* S5 jset [trade-record-one] of self item (([who] of customer) - 1)+ U+ M- f. V+ K: m( g
[trade-record-all]of self
* M) f2 m! @" m! S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 ?' U* p% F) m+ i) z6 N, b" E

: k+ G- s( F( I1 Bset [trade-record-one] of customer item (([who] of self) - 1)
# [( O# P" N5 t. v3 C: ^: A[trade-record-all]of customer
" u5 W4 R0 C6 `: d9 L+ x
- b2 J& I! O% V* e" u$ O
set [trade-record-one-len] of self length [trade-record-one] of self

+ S6 M' x! R- G8 r2 s3 w
# ]  G0 J2 J1 P; sset trade-record-current( list (timer) (random money-upper-limit))

, c" V8 l$ r3 g1 u7 _5 b/ p' G- k, M
ask self [do-trust]
7 ?9 ^( R$ Y/ Z1 \3 E;;
先求ij的信任度0 Y# r7 i' C4 B' W0 F. }3 l4 {

# O, H+ d, c. Z' Qif ([trust-ok] of self)
# e( O% U$ H% K6 \1 @% l;;
根据ij的信任度来决定是否与j进行交易[
- G# ~) }. ]% W; W/ lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. x* i% F" @+ C% s! p
* z+ n+ d+ l& u$ ]7 Y8 |[

/ G  H6 s, j  }
" P% Q' c' V0 g: x% z1 y6 p( C* edo-trade

: l4 x2 }+ P& b, }1 r: `( F/ e2 U
; e( H1 N7 }$ H  Z2 o4 B& c# qupdate-credibility-ijl
$ N& M; N& @6 G

# _9 w* m! H( ^  M" uupdate-credibility-list
4 b$ I. g' t6 z! }; l9 v. [2 S* S0 I

0 }# u' ~- u+ t7 \
0 u' M4 A5 M8 ?- Cupdate-global-reputation-list
+ ]1 v  e& F5 ~0 y% t% b% u. V( `

- \' q3 D7 D  ~* r, ~0 I- x$ N# ^poll-class

' x% A! W) N5 E0 Y  p) n4 P
! o5 e$ R- o0 \( F' Eget-color
1 Q  L9 z* T6 C$ F( H" Z0 j
4 p, o9 Y- w$ T* h, ]
]]
1 c0 ~" s9 c8 Q- A4 X; e! }! R: b
" Q8 J9 K- E( q8 r;;
如果所得的信任度满足条件,则进行交易0 ~$ h' M3 g3 e) m
* o0 ^8 h* ]9 G, j: ~+ w
[

; V# N# z, Q/ f- l( K( Z6 W8 I6 L
' k' S1 N$ a" L) y% [rt random 360

1 I( T0 Q$ o  M' T. Y  v, P, `3 s6 H1 a9 \& U% l
fd 1

/ ^  R. J9 n6 s) H; B. o
3 ?+ |8 ?0 c! h! u]

$ k0 P* a) e- D2 [. b; I3 B3 D* v. a* c$ V( `+ K+ a
end

* B) r, u" g0 Z- O
' [* m1 e9 Y7 u1 }to do-trust
$ v. P% x9 B5 o7 X" v! x( p, w. y  ^set trust-ok False
# g# e3 u# K% g( e  c
: R9 T2 D5 x) w5 R

) a$ j4 l5 Q6 |. plet max-trade-times 0
6 q3 w' M' @' B7 rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( f- F7 v5 C/ T; {# vlet max-trade-money 0( m5 T: e1 _/ Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ A. S; |3 f+ w3 Q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 G# s0 a8 L: p# Q! n
; l; A  X& I/ F1 ]( w$ f0 w% I

7 K$ r! I" c% Y- J$ m% T$ Z, F( Zget-global-proportion
! n! F( d2 E4 H3 k. Plet trust-value
, D. {6 z! b1 flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* L; v2 g: |! E* n0 W6 O' Pif(trust-value > trade-trust-value)
! ^8 Q; F  x! F7 f4 P; O[set trust-ok true]- Y' L0 r% S8 X: ]+ x
end
+ y, C: {' n2 A3 A3 H' W0 P" C; d+ L8 [3 x( R- }1 W; N
to get-global-proportion5 C+ i: U# V  ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- M# V' n, V8 D8 N
[set global-proportion 0]: v. b3 u- w  G# Z5 n! h
[let i 0
# |/ U, G" H2 i& R% X- \6 K3 K- k: llet sum-money 0
. s. K* B" b+ }, x' q  Owhile[ i < people]
+ H) ]: `) Y# T* `: e5 l$ f6 I# [[
: ^, C4 j! \- P: C8 Wif( length (item i1 _$ E; ?- n4 ?5 s7 D' V
[trade-record-all] of customer) > 3 )
* U& B: F" `% w& z9 G' c. b3 }
[
( g5 k  M' v: F- [7 o/ ]) _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- {5 v1 {' Y8 }" R6 x]
3 K0 y3 z! l8 J! ?8 i* b8 i]
# ^# {" f# Y0 g- Q: o3 ?let j 0
- Q6 d) T5 c3 P! p. r: mlet note 0
. P3 S7 Z/ b+ b; Rwhile[ j < people]
! _; o. l6 X6 D! g. j/ n& }[
" [5 A; d1 |0 `& p) oif( length (item i
* b! q9 b1 d! T1 i5 B9 u. I* }[trade-record-all] of customer) > 3 )
, n: j7 p( q+ |# g% a  [
[% r( g) k# L( f5 L, [3 @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' o" Z0 A: g) Q& [2 z+ u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. E% e4 Z) ^9 X; E% X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 W+ K. {$ k* G]2 o' w% \3 z" W% U8 o2 g
]1 Q- |7 [2 I5 N$ q* ]
set global-proportion note- M( r" i% S+ t7 W% P5 \
]/ G9 E8 e! U5 y: L+ G  ]3 R" Z3 |
end
3 y; |% @$ F3 L! }( k9 g+ L* Q1 Q4 t2 w7 z4 F* v' s1 h
to do-trade$ b* _, J7 p) |5 M3 p
;;
这个过程实际上是给双方作出评价的过程
0 A; l  H" ]" I* }5 S3 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 e2 @) T2 ]& O+ p9 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 _# U! _2 m# p3 Z% b+ X
set trade-record-current lput(timer) trade-record-current
' n8 W2 o& g) D6 J9 R9 {: J( P;;
评价时间2 i' r' Z! a  d; F. o: `
ask myself [' M' g( Z/ s) G# `  i( x
update-local-reputation
3 D+ m/ D& E- `; yset trade-record-current lput([local-reputation] of myself) trade-record-current
1 u  u1 ~) u, R1 X, S& m3 S+ k]3 F' V4 C! v) f$ l( {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 E- U. t5 S% x4 a;;
将此次交易的记录加入到trade-record-one3 b. P5 ]' U; v6 Q' U0 w6 n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 M4 q8 E0 X1 H+ C
let note (item 2 trade-record-current ): p2 ^$ q" ], D, u  R& ?7 f
set trade-record-current# G! Y8 ~& I; E) ^
(replace-item 2 trade-record-current (item 3 trade-record-current))
, z2 L* r) U  T( O; v9 N- L7 A
set trade-record-current
' ^8 D( o+ V4 s( x# R, ~(replace-item 3 trade-record-current note)$ z% W2 n: d6 ^9 ^1 g5 d
7 E9 y, y; n" M3 R- v- I1 Q
) x0 U' E& @+ A) ]! p6 Z' X
ask customer [' y+ J+ h9 u+ C
update-local-reputation/ i2 q: ~( `/ j" W9 L. z
set trade-record-current% U7 h# [& u& v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; Y* U$ ^. Q& Q1 ]1 }/ ?3 c]
1 U0 A3 q- B4 B4 o2 b
) w# |' P% X/ ^8 y0 M

, ^" b+ d- @- `% d! E! H: m6 v$ ^+ H9 F  Pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; F9 s# P3 r. u3 y
. E( \; F; B% y! x7 T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 S0 c: U/ O& T;;
将此次交易的记录加入到customertrade-record-all
* V* J1 g( ~  `9 ], p" @end* v1 u6 G9 G% r. W$ D0 K6 g1 @

0 |$ I# z* U1 d0 T2 E+ a0 F. _1 \$ sto update-local-reputation
1 D- w$ ?3 l, q9 _set [trade-record-one-len] of myself length [trade-record-one] of myself
0 r5 }, C& D8 L/ a) r5 n2 x+ p$ s! I- f9 N" H2 [
/ E# f1 q" [. {! P6 w8 _
;;if [trade-record-one-len] of myself > 3

8 B% k8 m5 C4 H! ]update-neighbor-total; h. Q8 i( m$ {# c" S
;;
更新邻居节点的数目,在此进行7 p) E4 `) J* P
let i 3
$ o7 z4 c1 t/ Y9 M! m  i8 B7 vlet sum-time 0; V7 \; j* ~& }/ i* O# h  P
while[i < [trade-record-one-len] of myself]/ n) W2 m2 N3 @* B2 l
[
! E0 X0 g: U4 B9 h  Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). ^! k5 W* o% r
set i9 e- o1 `0 A# v. b* M
( i + 1)
# x9 |2 k' R7 [7 N; J4 [" J
]
1 p: m4 @, ?  t* z- w. ]let j 3
" n0 `! G' V3 L  P3 Y4 wlet sum-money 0
* ]' l; P: S9 R9 M( T% S$ e9 r, W. Bwhile[j < [trade-record-one-len] of myself]6 s. {" F7 y( O. Y+ r
[( x  n# h! l. S  F8 D
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)3 ?6 X$ F- u$ v2 ~
set j
& j7 T6 Y, C  A6 `# |, u/ L" t0 {( j + 1)
  W$ S6 N% d; C- D, x& V  ~3 N
]
* ?& }5 r2 d  P# W1 G. h! L( `% X- ^let k 3
! p- Z  Q8 _; L! p0 @let power 03 W' M" Y9 d, O" s! [" w3 z
let local 04 f2 S) g( A" O  y# U6 x
while [k <[trade-record-one-len] of myself]. R# ^% A1 G* Y2 {! H% f; ?. y6 h
[
$ t# x# [5 F6 @9 w! Eset 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)
; M  u7 m: S. A( B- I. pset k (k + 1)% T7 T4 K* }) F! j
]
# C; A' R( i! B3 }set [local-reputation] of myself (local), i0 [  s, q5 i, V& T
end) ^+ @6 M0 R3 L% l- q3 }1 V

: ~: F) I. p( H& T" u6 w1 yto update-neighbor-total
; j" ], \/ }9 \/ d1 F- W, A
- b1 f7 ]: J! D$ ~0 {" Eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: U1 c1 X8 ~% o% L$ K! I; ~& T
& Q. w* f$ D: h; m. i& m  g& O

2 K* h& T$ |3 `6 ^2 K: ^1 s' Mend
- Q" t2 B* }: k9 V6 \* [# l. L; ~$ D  C% Z% T# r, N% n
to update-credibility-ijl   a) T% Z8 M7 l% t4 r

1 R3 u8 L* |4 {) N! D5 t' X5 r1 h;;
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 E! ?, U7 Q: @+ d8 b
let l 0) }$ `% J. M+ Y% |! x/ K& Z6 q
while[ l < people ]
% s+ G, E9 d! c" n;;
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
. e, ~6 @, b) w[, `* h# w6 J* M9 d
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* B; O3 ^  r' j0 qif (trade-record-one-j-l-len > 3)
* X  E+ Y" o* k- ]+ v* Z) K8 Y[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-one5 s5 A& k9 C& H- w( }7 m# W
let i 3
5 {% S, O  ?$ r0 a' _$ Alet sum-time 0
: t6 p4 @: p# w) }3 R" \6 Iwhile[i < trade-record-one-len]
5 m& w+ _% m* _2 E[
2 P& i  ~; [: X8 ^set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ v* E3 f; W& |  B& \1 Z# A
set i
7 s" F# Y' d, ?  v! ]( i + 1)

, y8 t4 g( j" ?3 N6 X]9 S. M& n6 n0 f) l' u: M" n* @, Y
let credibility-i-j-l 0
0 o1 N0 ^' E, A) E/ U( [( R- x1 ];;i
评价(jjl的评价)! z1 z# G6 G1 e! [8 [! L
let j 3
! S4 s2 n* E* D2 h- H) u+ Q7 Tlet k 4) C; g, @* a7 |0 f4 R8 I
while[j < trade-record-one-len]! `; ]4 O0 r/ \4 T/ h( |
[4 a1 h! E+ ]2 u2 _0 n. ~
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉0 Y1 B, A0 W+ b7 r  j
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)
* T% Z( ^$ D! m6 g" q8 i2 dset j, s* ?7 F- I9 r) \
( j + 1)

0 p" w& j6 J7 a8 Z]8 i$ i: C& H$ J+ q# ?
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
/ P" ?9 Q3 J, U7 K" e8 f7 o7 w$ Z; }# r( T

5 j! n& n& D' H" q- l! p/ |- L: o$ Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 _7 h& e6 l  i+ y/ v5 N' c
;;
及时更新il的评价质量的评价
9 K& }+ U0 m6 n5 }: u! uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 w9 a# {& T" K' {1 _
set l (l + 1)
" D) @* L8 @4 e- J. r]
9 M; K! p' b$ e- ?end* N* ]6 q6 {9 M. B

# I" u8 \4 j8 [: [4 o% D. j  j% w3 Mto update-credibility-list
9 d8 ^  V; Z# d7 s& blet i 0
5 z' d1 _/ F3 T( o% L  Ywhile[i < people]
2 `* [1 M$ j: x4 |[
6 o/ G' s: t' S, Y& d: X8 s* }let j 0' P) F' u. a( I  C2 K5 N  \7 Z
let note 0
1 @1 w7 R, E" t) x. `let k 00 m! R5 q$ m1 A5 _$ d* _. Q6 x1 |. e
;;
计作出过评价的邻居节点的数目- J* B% K5 I( Y4 n+ g
while[j < people]
  F* Z8 k8 ~" l, e  {3 b[
! z3 Y7 m2 h. K! M2 [5 Pif (item j( [credibility] of turtle (i + 1)) != -1)& d; V* j% c" |( p2 v8 C) k
;;
判断是否给本turtle的评价质量做出过评价的节点
" ?4 r# m' L* s# a" {8 F! B# e9 O3 E[set note (note + item j ([credibility]of turtle (i + 1)))6 [( F" ^: @! M: D' P
;;*(exp (-(people - 2)))/(people - 2))]

  _: m, d! D. k0 y: Jset k (k + 1)
7 T! h1 V4 t1 Y% Q- }4 i, j, {+ t]; n  ^/ z. b1 r; ]
set j (j + 1)
4 O" G, v- Y0 P. O]
4 M, [) K1 }$ lset note (note *(exp (- (1 / k)))/ k)
) j% _4 i% u* L; h& e2 b) dset credibility-list (replace-item i credibility-list note)
3 T0 D5 \* X* d9 N1 X, A& F# Rset i (i + 1)
: B: d/ P* l( C- b9 F) A]
- N; r! z1 L4 `/ [5 A9 \4 ~- x( @end- i9 A; _9 q' Y% V  |' `, @
# u$ c2 j3 U4 F! _
to update-global-reputation-list% ^: |. r3 x" o! l; R6 q" l9 Y
let j 0
- _5 z0 r$ E% g+ X4 C; j/ dwhile[j < people]7 g  t" O% k: d  v- k6 ?
[8 _% b; @2 [8 K8 f+ S- k" H  R, z
let new 0
, t$ D/ F) \* A  f, E;;
暂存新的一个全局声誉
( M" ^+ I( U9 s3 \) d+ c5 }let i 0. |5 y) B6 J; @0 @7 O
let sum-money 0
' {# Q7 G* T( Llet credibility-money 03 b0 }3 L* }* A! o. k$ g
while [i < people]" t: ]8 N; r/ @7 O% k
[- ~" E& `& |, c7 T& W# M  e2 {, n. W4 K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 t5 e" A* ]; E* Fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ S5 S. \0 F2 g! y
set i (i + 1)
/ l( |, C( o- ]3 S" h; E]
8 \9 x$ w# H$ E2 Hlet k 0
; P# x6 }4 E+ Vlet new1 0
/ Z9 d  Y+ `5 j; @  @6 vwhile [k < people]
2 r  j+ K7 r9 p" [8 N- L[
1 P2 t% D2 E: I, }5 p% `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). a6 d( o9 W# N- X3 h
set k (k + 1); v! M$ i1 |( E8 f3 c+ {
]
' e% n3 Z6 z2 y, y  m& Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + J) l; _/ y3 `
set global-reputation-list (replace-item j global-reputation-list new)& G6 f8 P: D# N8 X# C, Z  r
set j (j + 1)) u5 f* I% m! G/ ]$ A
]
, e# E* T4 F4 j: uend
# _4 R1 `$ R3 j2 D( }9 a0 Q* h
9 K: r1 h7 z8 }9 L6 ^/ S7 B3 P  S' K
1 Q, Q  F; J- W! r$ K& T' u( o2 E# N1 U' K
to get-color
2 P& N# ]- N; @7 Z) C8 n
! z% C' g8 \  ^0 \8 O" Fset color blue
$ _( `# q* B* m2 r& @* B: |: x
end) b& H. @# J2 _

5 c# \7 Q' |9 G/ L) Wto poll-class+ y8 W$ _. L6 P( r# Q6 M1 |
end
4 h' @5 T3 L, C4 C# w) x. v! ^5 R; q1 U( J) p
to setup-plot1- G9 ~$ d3 K3 O/ F7 n
+ e: c. @$ B/ Z8 _" S- G: d
set-current-plot "Trends-of-Local-reputation"

/ V" y/ o7 p: M+ k( c" H: T/ Z- N& A
set-plot-x-range 0 xmax

8 t2 A- Q$ X; h0 @
  y4 S* q! h: Y4 G. p  G9 m0 cset-plot-y-range 0.0 ymax
! y% w5 j+ i: @: m5 J1 R
end
! C$ O9 @1 C  ?. g' L0 r! y. g. C7 p% D9 B4 B
to setup-plot2! ?1 F2 b! Q7 `
9 {6 ]5 S- A& h% b
set-current-plot "Trends-of-global-reputation"
2 C& F, Y. W9 T$ e# W

; E7 y0 U+ t0 zset-plot-x-range 0 xmax
* J2 C! s4 F# p8 K
/ A; g- F3 R% D* V) Y3 b5 z7 b
set-plot-y-range 0.0 ymax
# X2 C& w6 n; J0 ~
end) y5 {0 H4 S" w6 h1 q
* X2 ~, @0 C; K& j& S, \. n
to setup-plot3: @+ N* U2 h( u  n7 R8 e& h* z

8 Y6 K& x7 P5 s2 }set-current-plot "Trends-of-credibility"
. @/ a  I" J& D8 R: J
9 v2 ^- |: l: D" o3 H+ w
set-plot-x-range 0 xmax
, `. @$ H( k4 Y1 h+ R" G

. z) I  r& ?% ~( Iset-plot-y-range 0.0 ymax
7 ~8 c0 W1 W; A- u
end
: o4 C) e# L1 |6 b0 b4 y9 i# [
% A7 J) @2 m* W$ Bto do-plots
! g/ S7 t( Y! X- a0 nset-current-plot "Trends-of-Local-reputation"; ?7 I* e( a9 B4 `+ o
set-current-plot-pen "Honest service"
& r; q5 Q1 V; i6 v- {end3 g6 |. ^; T# C' V

5 L8 Z, c8 x$ X[ 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.
' o6 R% g/ s' H" f  G% ^7 j
$ e3 D; M6 x8 J) m$ J. n7 F) x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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