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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:
# q6 k# _4 t0 cto do-business ' Y! H- z3 _7 I8 s  r
rt random 360' V7 `+ F7 J" i( z7 L
fd 1
7 N4 R: w5 W$ W9 n# A ifelse(other turtles-here != nobody)[
3 R8 T* Q5 q! n   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 G6 \/ E- ^& h2 x( s$ E7 p   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - }; x8 v' y4 M3 `! s) T
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# N9 s& A1 O3 |& I# b; l& @/ M   set [trade-record-one-len] of self length [trade-record-one] of self
/ J) B' t, S+ I& s$ k3 ~, k/ m   set trade-record-current( list (timer) (random money-upper-limit))0 _0 @9 M: \7 C. Y8 B  V1 [0 L, C

+ [( C* S: l8 B+ D& ?( f# ~问题的提示如下:
: q& Z: V4 p4 S
5 c0 g4 i  Y4 z( n- [error while turtle 50 running OF in procedure DO-BUSINESS
. w7 Q9 ?( |$ |. l# I7 t  called by procedure GO
; V8 a3 ?2 R# D- F5 I+ t% QOF expected input to be a turtle agentset or turtle but got NOBODY instead.! F% n2 u7 U5 _; O. v: ]
(halted running of go)
. o: V5 |# v8 H6 X1 t( J3 X" p% X( ~9 W$ x$ M0 ?  u
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~~& [$ X% `8 ]# U/ b8 ], a. p$ M% C6 i
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0 I7 Q$ n$ p" w6 j% ^% B
globals[# b3 Q, e+ h/ i6 L/ n
xmax( _* x8 d+ ~9 H2 B
ymax
% _: H8 j) j* A2 H- ]global-reputation-list
. P8 `& u: u1 ~% Y' m/ O" P; y$ y4 q
;;
每一个turtle的全局声誉都存在此LIST2 K0 F% S: D0 n% Q& X
credibility-list
+ G/ l% A) p- }5 x' e;;
每一个turtle的评价可信度
7 o4 i. G! L+ P) whonest-service2 |, p: h# ]+ \& z% B3 c2 P
unhonest-service0 s: b$ D2 N0 ^/ g
oscillation! q5 Q0 C# ?! [/ c3 ^" H
rand-dynamic* ?' n4 Y8 [% X! H
]! K# v/ W1 D3 j# ]( C" }0 s

, H4 G; m5 Z2 R1 A  E4 Lturtles-own[$ D8 P: ]; H1 Q1 e3 \
trade-record-all1 h! [- w, d1 a8 p4 K0 c
;;a list of lists,
trade-record-one组成
8 q* t1 b* c$ V7 c1 wtrade-record-one
8 P; I0 S3 n, }1 N7 ?" }; P5 h+ N5 ]6 w;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- {' F& x% r  x2 C) E
" R. V: y+ ^' K) \/ i
;;[
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]]
. |8 p9 f' Y/ 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]
" h, b/ u" S. P7 f( B, c1 I2 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list7 d" _9 u7 b+ Y$ H  v, h7 v* M
neighbor-total% j7 F" H/ V$ z' Z3 @7 [+ ?' W" j
;;
记录该turtle的邻居节点的数目
& r1 t+ q! M7 _& J5 `4 ltrade-time0 O6 Y+ N$ o' y$ l9 ^0 F: _6 w
;;
当前发生交易的turtle的交易时间
- L& N2 Z4 L5 T+ Vappraise-give
' @% v2 M; T' b, Q" v;;
当前发生交易时给出的评价
+ {6 A  m8 _8 n) R$ ]& ~3 g5 ]appraise-receive4 p0 J8 a6 V3 W! z0 |
;;
当前发生交易时收到的评价
! b  P/ r- S7 {# E' Rappraise-time4 P' {/ N8 S. _- S  L6 Z( ~( y1 `
;;
当前发生交易时的评价时间2 l/ ?4 D9 z* L8 t6 R$ [* I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉: W% [; b2 n4 ?
trade-times-total& I5 n) P3 ^; X' s4 B5 t9 D# t
;;
与当前turtle的交易总次数  O: V3 ?9 W# q3 I8 w
trade-money-total
3 S4 J: p, m7 n: G  n  \# m;;
与当前turtle的交易总金额
% F/ \5 n* r% @& [8 Vlocal-reputation$ x% P1 [4 T3 f5 \$ E
global-reputation
/ b  E& s) w! k; bcredibility
: _! h; K+ V2 ~% h* `; x5 g% |4 z;;
评价可信度,每次交易后都需要更新
  P) S; j$ K$ I! X# Y) mcredibility-all
: P* f! q- t7 i;;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+ V' M' K# M4 A, V

1 x& y1 r$ l7 s) P" |: 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
$ |0 l  G# o& @6 F4 r) K7 Z1 n0 o2 Icredibility-one
  h- ]8 }+ V: `* A% J3 M;;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; Q, D  a! `* Z: C$ g
global-proportion
8 }5 ~% X; h! c0 b. Q* Ocustomer: B2 p/ B7 C$ W4 B3 |$ p
customer-no
( r, R2 I( [: ~$ b6 G$ i4 U/ Ptrust-ok
6 G- u8 ~$ D; E* c- ntrade-record-one-len;;trade-record-one的长度- ^7 q5 B. E( |* V& Y* q/ K$ e  [
]7 J- |2 {* N6 k/ M. q( H0 q

1 j& l% l4 ~" _;;setup procedure4 ?# e, O  C/ L+ a% X; q
( i! W) G: A5 d
to setup
3 k1 m# h# A- A1 u/ L! H; ~; ]* b6 M$ q2 ^
ca
( C3 t; q% J  K/ W# C6 Z
7 H2 ^; V% m/ E5 S( m
initialize-settings

! ?) p( K1 t+ X
8 C, V/ K: G$ R. t# p, p6 `crt people [setup-turtles]

" y# h3 j, ?2 u- Y
% t1 S- c4 p" q0 o0 e6 G; C$ Dreset-timer
0 {5 e1 _/ n: U
  H, z4 [+ y5 y. \1 p
poll-class
# o' g, t$ p9 ?  B) H6 U) G* F% g

( N( o# ]- _7 O; o: [) G! Vsetup-plots
0 }1 b  c# F/ }) z, G$ X& A+ n0 D
8 N* o5 ?/ z2 O( Y
do-plots
4 U* ?( E" ]. C" D7 y
end
$ y2 ]. l$ e6 R4 X
" Y  k8 Z/ e/ Q6 Yto initialize-settings5 o7 I. U6 Q# I

4 q5 C1 s" h+ O! S) ?) f& {" Jset global-reputation-list []
" h, D% q2 `/ z# Z0 X0 N' k

9 z# Y: V" m2 ]# Y3 K1 M; i% rset credibility-list n-values people [0.5]

3 a; d& S9 V  c1 W2 s) O; A+ g/ j: Z6 x; Z" N8 Y4 X
set honest-service 0

$ I' ~0 K9 z+ t- O7 U, I, q$ c% C) {: u: q
set unhonest-service 0
& Q# k9 z( ?6 m- d# U
% f$ b# G0 y' z- P2 M+ z/ Y
set oscillation 0

' v7 z- l8 q: [+ k, q" ]' B# w3 x) q# u
set rand-dynamic 0
8 @' Y. L: A! y1 A" a0 R
end* u( A+ e" A, P
) i  j( y% G; g/ y
to setup-turtles % }% Y: ]* m% }: P9 [3 F: Z
set shape "person") u' x" X4 R# k7 i
setxy random-xcor random-ycor
; V8 N3 t. k7 K" r0 @set trade-record-one []
2 D, \# m: g+ N3 C
" ^. C0 g9 t' G6 d& P
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 _: Y% ^, {- n9 s8 e5 r/ I

2 y1 b7 l! ]: J6 `8 y# kset trade-record-current []! k& p! u; L* I+ g
set credibility-receive []
4 P5 v! n2 i. R( Bset local-reputation 0.57 Y8 v0 c# {  k, j
set neighbor-total 0: m- |* ~7 r2 T7 @
set trade-times-total 0# e% q9 f& P: f$ L; v# {8 o! B
set trade-money-total 0% T6 W5 P5 U7 E9 h  ]2 H
set customer nobody0 a, O7 M) g" l  G1 h/ F; \( Y
set credibility-all n-values people [creat-credibility]
- [) b( y1 I! f- Oset credibility n-values people [-1]
* K- x4 [$ v' W: y$ ^  O5 Vget-color5 s7 A" S5 p+ W' z6 [+ a
- o' a( T# {  Z3 ^1 x  i  X
end0 F4 d# ]8 V  R% N! k

6 ?+ [, z& C, `( s: ~to-report creat-credibility
) T! }7 Q7 l  lreport n-values people [0.5]
0 R7 h! l. _. ^/ c2 qend; {) ?7 a9 L+ q0 ~6 r

) q' J% [5 A$ B* x5 F2 \- `to setup-plots8 I. K. Y& }* i& h5 P5 ~4 L7 a

" S- @2 x; X' x0 Bset xmax 30
+ h7 K& G4 O$ }
9 B  x0 J" h( P# G$ a" J
set ymax 1.0

0 F, F+ T1 l0 r, T/ |
! b2 r) }8 n$ H' `; yclear-all-plots
$ F8 B7 _1 n( ^/ L+ e  H

; ?" ]8 T: I! T3 E. j8 m4 ksetup-plot1

/ \3 B9 u8 _' x* d* {4 y% q
, s! U- o0 x! p8 O8 T- gsetup-plot2

4 |* y1 Y% b: G' `: S: n$ W7 D3 J/ l2 X- w& u! |. C
setup-plot3

  F' z0 M) ], ]: |7 i/ h9 uend
% s( i4 F* h/ k' r0 a" c  l. `3 Z/ W( p0 h7 h3 C$ Z- J
;;run time procedures3 [8 p7 M  z: P: E- B

( V) O$ \- {6 |7 z7 Ato go
- [( ?; M7 b+ U) S
, h3 l! V9 j' Lask turtles [do-business]

- o, b$ i* c/ W  qend) j9 |- [, k( |/ C+ {
; @' i$ E) Z" t
to do-business
. n5 J; c9 A- q" u( f1 b6 U
9 Y; U( S8 s7 D! |0 L9 \* N) w
: {! g6 W1 T4 w: }0 S% F
rt random 360

, N$ d( z2 {( g8 h0 x# W- E6 S( R0 ^! _. ~5 I* p
fd 1
! S! x9 k4 P: |- G

$ o0 Y& F( e7 v1 O$ m" Cifelse(other turtles-here != nobody)[

# T( a+ x8 i. l5 M7 V
5 i6 N+ c+ A2 O1 R0 F( S( _set customer one-of other turtles-here

% M0 i4 L5 g( {! b1 F. j8 n% I+ ?' B4 i: c2 m3 i
;; set [customer] of customer myself

' r% k3 Z5 w9 o+ I7 \4 U( J0 ?% V" C. p# B
set [trade-record-one] of self item (([who] of customer) - 1)
' _. M8 H; P3 J; f, S. {+ U[trade-record-all]of self
! X/ ?$ Z: U( q: V# }* X! j: r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 H- J7 A* u- E' N. B
/ h" e4 C+ m) E) b3 O9 ^set [trade-record-one] of customer item (([who] of self) - 1)
" {" x' K" m* n/ L  I[trade-record-all]of customer

" I, R: A; Z0 A& c
! }' H! g# N' @: t4 X$ V/ Uset [trade-record-one-len] of self length [trade-record-one] of self

7 V5 r3 @) O0 @( n; ]
3 T7 X5 }$ b' {$ Eset trade-record-current( list (timer) (random money-upper-limit))
. T8 ~: t& y9 w  h! ]
; @' v+ {' ^6 v# @  U; H7 X3 H
ask self [do-trust]: m& k9 [1 ]: N! [) m% B
;;
先求ij的信任度! Z" e6 \' m+ B1 u# c. a

2 G8 o$ Z5 m1 o4 I+ Z  h2 X2 dif ([trust-ok] of self)
; K/ u" K$ f$ |' A6 ?; I;;
根据ij的信任度来决定是否与j进行交易[
8 z5 C, P1 y  d$ nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 s8 w) T; {2 h+ F' {2 y' ~3 n

7 z- G( ~. N$ {+ i5 _9 I/ n[

* H$ y. u- Z- g6 {: m! L0 L( ~3 d7 Y& `- w
do-trade

# R- C- w. S0 U4 u' M5 D: A, F+ F6 z7 E
update-credibility-ijl

5 a4 \7 K' c, b4 x4 F* v5 d* T4 K9 u) Z/ g' \- f7 b$ {, b6 W
update-credibility-list
: U% h, f5 _# S! ?' z
9 F* T: t8 h- l' f  \& o- q8 Y
1 `+ ?) t, Z2 B& `" f! ~8 S$ R& _
update-global-reputation-list
9 \9 Y( U: Y0 w4 e

$ \1 x3 j& i9 |: K+ Kpoll-class

% B+ w) ~+ a0 l7 Q1 _. @: A! l7 V3 h) z$ a" n
get-color

3 I' q' g3 P1 L: ^$ H' A
; B$ O- T9 J" W: K) f]]) P9 Y1 l4 P9 F1 x% ?

9 E: ~' Y# l  U1 a0 B" a& T" h;;
如果所得的信任度满足条件,则进行交易9 _! S- y# a! j% ?  A
$ L- S* a! @9 `# r2 _, D9 g. Y) a
[
$ Z1 V$ p' }0 Y7 s

4 D9 d) l5 C; R3 Trt random 360

# T. J$ D4 v9 v( _' M
9 N- s, W4 F/ g9 q  g- B4 F6 Lfd 1

- G$ j9 s+ X, y3 X
9 p9 K3 z# r' e: []

& y# W. Z/ j) q( w9 Q3 |# Y) I) U- ?+ q
end

$ m0 m! t  L: d; E1 G
! }1 l+ D- R: o. Tto do-trust & y) p+ i9 d9 _& d7 D
set trust-ok False  y, Q8 y% G/ O+ P: O) h: i; ]' s
; j4 C4 G- }% c4 F7 X

/ j! d+ z3 i/ h) G/ flet max-trade-times 0
9 ^- c, E7 d  t! p4 Bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# Z3 d4 e4 V* f+ P/ ulet max-trade-money 0/ J8 F* r& s! |1 j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 f' h& t1 c" k! k2 glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  u; }+ A6 T& ]  b1 D  C3 H& l$ q: E' h  H. J
; L( n$ i0 E: I8 c3 u7 d! T5 d
get-global-proportion) \4 ]' Q2 T  y) |3 f1 a/ q
let trust-value7 Z1 ^5 l6 g  I4 m0 J! K
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)

% [! n4 L7 h2 Y% e! F# O6 Yif(trust-value > trade-trust-value)
5 _. J( _1 v2 T- I! r6 m[set trust-ok true]  F4 d1 A7 a3 i2 D7 r
end! G% j: Q0 P$ F

, g5 p. i0 X' z( w2 D1 |to get-global-proportion
( w2 ]- A0 M- K) K' Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 W9 d, [" Z8 y" ]$ Y[set global-proportion 0]
7 F3 c3 v2 ^' H! Q; p[let i 08 b- [# G) k9 d9 I2 U
let sum-money 0
+ t4 ?, F5 `" T/ wwhile[ i < people]
5 F0 X5 D. R$ d' F' Y, Z# f[5 `- E% e! P6 X( C9 t6 I! B
if( length (item i
+ G+ M( {# z2 ?# S8 j" \7 i: i[trade-record-all] of customer) > 3 )

$ F1 [2 |+ ^% d3 q# d1 u/ o  K[. l4 C% A) p, z2 Q8 B& d* ~
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! `$ |8 H; n1 w# g1 P, {% ~6 S
]
( [' P3 Q4 A6 J2 G]
' ?, J5 K8 E: S6 b* Q0 y$ ulet j 09 Z: L% O+ J/ `) Q
let note 0
: e" Z- C* D& \# a' g& _while[ j < people]
' \) M! X* E" U& Q; v0 ][
; Q) V1 v2 [- p* }. Dif( length (item i  R2 z, N4 I4 M+ K
[trade-record-all] of customer) > 3 )

/ N1 o8 b4 _& g; F; V4 z. t9 t; U[
9 T! S8 N( g: n8 C% ~) Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! J: Z+ O) `6 Y! z; J! ?9 P6 k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 |& S5 r/ _5 l* S3 u& ^. Z. Z3 x- M8 H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 z( u, y  }& L; g1 V8 R6 z+ ]6 W  x]( i# b; y9 q7 o4 D+ ^
]2 h5 I% K) z) ?/ u7 I+ _$ O/ W( V
set global-proportion note* ?  A$ W  f9 y4 T0 c. Y+ l
]+ }) B) J: J$ N
end* Q  m; @. r6 a6 O; e9 M
9 @* w( ~7 J& A7 m' w% r$ d
to do-trade5 S2 ^+ h2 Y% o+ S: C/ D8 L$ [
;;
这个过程实际上是给双方作出评价的过程- i) i3 K! J8 Z8 n" n7 |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. M$ f# @! i9 i# T) J: n, x$ j0 c6 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; |1 s4 H; T: ]# y5 C9 A
set trade-record-current lput(timer) trade-record-current4 z1 K+ w, E8 V* |
;;
评价时间% s, W% N  s5 E$ i, b9 s$ H
ask myself [
/ I0 A; U9 {3 O( E6 t) {2 |4 tupdate-local-reputation* S. {) N+ j. B0 V
set trade-record-current lput([local-reputation] of myself) trade-record-current, G; q, S: b) q9 ^
]
4 c( N, X) Z$ jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! q& P- K% x5 A;;
将此次交易的记录加入到trade-record-one# R$ T" S6 z% K2 ?' c$ z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ t8 p9 v& N1 t9 q' [. Z
let note (item 2 trade-record-current )
, Q! @  P2 a) Jset trade-record-current
) b- O! h8 M0 ]6 U(replace-item 2 trade-record-current (item 3 trade-record-current))

% m# u1 w& `- ?3 j! eset trade-record-current
$ E6 ]. o, \" `) O(replace-item 3 trade-record-current note)* D1 Y# _# |# R5 u

2 ~8 {9 C+ Y2 X, T* V

( T2 a  r, d' p2 m) t" Pask customer [5 }3 E" O4 s- Q) T' U( r
update-local-reputation7 L+ ?# Q- F, }4 g+ Q2 _4 L# l' ^
set trade-record-current
* k) o' ~' I7 A1 A* r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! `! W' V+ N" U
]
6 X: W& ^0 r  X5 `' i) V( `1 Y; }1 s) c8 y7 S( m! d$ q5 ~& q/ r

$ b, L8 a8 W" i/ Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' K1 P4 K- E$ H5 |9 X4 \4 _2 J  v
9 G  s( c: L1 ?( S/ H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 E8 p+ l. T; c- J& Y" Z;;
将此次交易的记录加入到customertrade-record-all; I: R0 o# S6 f3 h
end
% c( t; d- J* r0 D$ v1 l* E6 v% b, [/ W0 k$ U+ Y# @
to update-local-reputation+ U" Y4 O) v3 `4 w0 Q; o6 X' v
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 P8 O! K# g1 ^5 o! l! D
. t6 H! [8 j3 M, G! c) V" I& y$ F6 C: f7 ^; A1 f
;;if [trade-record-one-len] of myself > 3
  P0 D  s# T2 ?. J7 R2 g! j6 I' r! A, B
update-neighbor-total
9 [' _: ^0 E/ t;;
更新邻居节点的数目,在此进行
" m" M. _# u5 W$ {7 ]/ _let i 3, J8 u/ `. f7 R+ R* {  f
let sum-time 0# e; w5 i5 M0 L9 o8 U9 \) u" j
while[i < [trade-record-one-len] of myself]" f9 w% i5 o8 D  g5 U1 W6 q
[
: {7 o3 K& M- X# i$ Wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% |. q4 p% l5 `, o) W5 Dset i
" b2 S! G- B2 I  U( i + 1)
  X$ ^: K( x4 A( [, Y- l; F/ y1 F
]
) k& g- m1 [6 N/ j% E' ~let j 3
) L( B$ L4 E6 [: z. M0 X- H$ |let sum-money 0
" x; Y3 F2 n- j/ Q, y, wwhile[j < [trade-record-one-len] of myself]6 k) o: f$ C( h- s
[" J0 W3 C, D- f1 n
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)
. E( B( B7 a. I1 Mset j7 }2 w2 {6 H2 h  w! T/ s1 i# O
( j + 1)

5 g4 l2 i: E$ \& y  j" ]]0 @; g6 P( Z  }9 p
let k 3
% |7 E. C8 l. f0 D" Plet power 0. C/ T( m9 V# d: M
let local 0
$ r: Z+ W/ f! wwhile [k <[trade-record-one-len] of myself]& E0 S! Y4 M6 W9 P1 [
[
, _( Z6 f- V1 G2 q; ]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) & Q& p+ K- [: R* S3 S1 f0 G; Y! R
set k (k + 1)
% P* |4 H6 E+ I/ B  |+ t/ F]! K& U3 c- p" u8 H1 B1 _
set [local-reputation] of myself (local)
% V/ C3 w8 G5 _! eend
0 E$ C3 e! v' C' D
0 ^" t( k4 X3 ?7 |  e5 bto update-neighbor-total
3 |% W1 a1 @# K0 u9 G. D) k; Z- s9 X: w& L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 r7 ^, N0 h' E6 F) `
) N. p0 q) N& d$ D8 N

! ^7 T* \3 j$ B' |1 S  C& S' N  L0 Eend% a( Y3 |0 j( C
% C1 t4 O8 i) \' `
to update-credibility-ijl
& R$ Q0 ~( \! ?. X  q; j
# E; |; M2 r0 ]8 K- R;;
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。
; {6 |9 ~% A/ Z1 @" W! v0 Xlet l 0
! N6 H6 N7 A( C/ n% P6 owhile[ l < people ]2 y# F1 ?  v" D. J
;;
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 X% l& g0 K3 F/ a
[
3 B0 {% j5 S' o. g# Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! @* r- R, Z% ]) Z, Z1 Q" a/ Xif (trade-record-one-j-l-len > 3)
8 Y' i, U6 Q1 K6 x[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% K- v; ]) ~. j9 G  d" `; h
let i 3  j% n! w  `* a& P3 _# D" H! P- i
let sum-time 0$ \8 Y" U" s5 I
while[i < trade-record-one-len]7 i3 v( r, o; i* A
[
2 A6 P- I. X% i8 |) Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 y: w& Q% y9 X  ?3 b( `# Vset i
2 P) b: T0 _" d6 b" L3 F1 F& T( i + 1)
9 j0 T9 B9 j4 [5 x) [" O4 a8 R- J
]1 k3 s3 M  y# D* n$ h
let credibility-i-j-l 0
& P+ |6 G. b1 w; N;;i
评价(jjl的评价)( G, @* H! h4 _- U
let j 3
7 J7 H) p; _# z) u. _let k 42 @( o8 k. P9 C# @3 T/ }, p$ }
while[j < trade-record-one-len]: ]$ Y# e9 L9 _' l9 Y3 _
[5 c: d5 D2 S8 i; Q
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/ ~( P0 @$ U" w* L3 m' d& z
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)
/ n$ a; W3 [  \4 Z9 Qset j3 t& S+ u, X+ _1 ?8 J
( j + 1)

, a) |4 ]6 f, i; x5 P], |9 w! x4 p* G4 {  C4 h
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 ))7 f  j6 u" B; o$ Y( }/ H0 P

0 ^) l$ j( N9 O, Q1 A
/ n  b+ T( f6 [+ P7 J( N* x! T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 M( ~, C; e/ E' E9 B7 b: K  ?
;;
及时更新il的评价质量的评价' O* |6 J( |; f6 H7 {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 v" B) i  O$ f9 R7 Q  @0 `6 e3 e
set l (l + 1)
$ N3 e. [3 u* E]
7 h- r  c) U- A  G2 eend
) Y, d5 g, ]5 _# A" `0 y$ B7 I  ]) b& r7 V+ P; J& v
to update-credibility-list
) R0 j+ |3 q2 q4 E9 ?let i 0% z, {8 E* w; U4 y; q2 m
while[i < people]
+ O& }# S* S: ][  |, s: K' _$ T9 K$ v# d
let j 0
4 H8 E! p7 ^4 c9 elet note 0* B% b  L: P/ q: O
let k 0
8 I  e; Z6 ?3 b;;
计作出过评价的邻居节点的数目( g2 c; ]! u; b: S3 h
while[j < people]
( a* K: k1 U4 f[) a$ M  M6 `) d9 O6 Q, X9 b
if (item j( [credibility] of turtle (i + 1)) != -1)
5 t  N! ]- O' {& d;;
判断是否给本turtle的评价质量做出过评价的节点& e0 D1 o% b8 S! _$ J/ K6 m
[set note (note + item j ([credibility]of turtle (i + 1)))
7 C) a' E" T& T, S;;*(exp (-(people - 2)))/(people - 2))]

" q6 [- d$ T, A. ?% kset k (k + 1)2 o! l+ f) s) I
]
. X! e0 Z1 p9 a$ M- A0 C" Iset j (j + 1)
* u6 g5 H$ W0 o. _3 ^6 A' b]
* m, H8 |9 [# b- d3 X6 {3 Wset note (note *(exp (- (1 / k)))/ k)
9 Z  Z- A" S; t  l3 {" S+ ^$ oset credibility-list (replace-item i credibility-list note)2 H  D9 V. D; m" r7 P; ^
set i (i + 1)1 M: `, y4 X- w' R2 l
]6 q: n6 i: s6 }+ E
end
5 h  E- N8 Q% h" A. E
9 _1 N1 Q4 p# Uto update-global-reputation-list0 p! l& S* @; O; b0 Q* `6 E- }
let j 0
0 y' l( N! v+ G; w8 B3 Mwhile[j < people]
% }' P" \" w+ n8 L' y2 {[
  [* g: J  g7 b( elet new 00 t9 D5 `4 {9 P. b. A
;;
暂存新的一个全局声誉
6 o& C0 p. Z* v, i, A  [- d6 Xlet i 0
( o: w, R8 E. U: a0 ?4 w9 jlet sum-money 0
4 J7 p6 y7 ~1 ]% F5 D" \5 b/ o) F$ l' slet credibility-money 0: A; M# y8 z- P) s* P% p
while [i < people]
% L( E8 Z+ e" u; N: m[
+ }0 @. D) r3 b# b) `% ?0 @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). K1 |* Z# r4 Q; a( b! x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& B7 {9 A3 n& b/ J+ G6 aset i (i + 1): j6 ?( g- U3 p1 ]1 x
]
" x) k, Z. o9 v5 `9 J% Vlet k 0) z; d$ ?0 H) P) W0 s
let new1 0
' B) Z, H# P+ ]$ @while [k < people]: R- P5 u% q) M' k. ?. t
[, s/ R" d  p' L' [5 {. z: e
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 E8 \5 v8 r8 L% x2 _set k (k + 1)! c/ a9 S. S* N. \9 D+ y. A1 V
]9 P. Z' h! T8 u; u1 y* t' W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 b% j* O# V+ Kset global-reputation-list (replace-item j global-reputation-list new)
# ]  i- R% _6 uset j (j + 1)
# \( j. b0 X( \/ \]) Q$ T" e- _  K. \
end$ x+ R6 {9 z- U
" o" H6 k5 t% ?' c& Q
) k6 q6 b5 ?( E& J4 \
. t: o  H( a3 V+ L. i4 f: L/ n. o
to get-color
$ N/ I; e# S! j1 s1 r2 B: |) e! {8 ~
set color blue

: s; l/ i4 F6 f; N. |, e7 tend
' j* @8 _# ]: x
5 ^2 K* y1 v4 B' |+ m/ |8 m  {to poll-class
+ r7 M2 ]. V! X, G7 w$ P) _end
% Q) I. k2 \; l, h+ E# k0 E+ |4 x7 W; v
to setup-plot1/ I# G) I2 f: w3 \* d

: q, E$ p$ h6 Xset-current-plot "Trends-of-Local-reputation"

5 S6 a$ O2 v* r5 a6 d8 c
) s! v! x5 c! \set-plot-x-range 0 xmax

3 N3 d7 \4 Z7 [$ y: n
2 E4 X% J; d8 j9 j+ Eset-plot-y-range 0.0 ymax

2 H. z) i+ j$ s* j. `end6 c$ o6 N  Y! B1 n0 ]: O

$ I: i: ~" E! }4 j+ ^to setup-plot2
& s4 c# v1 h% K' d0 n" z# Y. A
4 c1 d5 a5 B  n+ C+ P4 ^set-current-plot "Trends-of-global-reputation"

9 D8 P; v) m& A# H
9 ]1 o9 ^/ S$ ~! V4 T8 cset-plot-x-range 0 xmax
0 i& y4 t8 h7 f' R7 n1 }9 v- J
" I  V' d$ R  c. h) w+ N
set-plot-y-range 0.0 ymax
; v/ G" X0 H; `0 o8 d: u
end
, }6 X1 R* Q& k, _9 }0 I( h- ?8 X" T! U+ M; t9 A& h
to setup-plot31 Z: O( _1 R  T, A$ f( D. r
5 v4 b, h( i  V7 u6 N0 X
set-current-plot "Trends-of-credibility"
- G8 L  P% \0 O4 O. ^! R9 X
* C0 `! c9 @# A  V. W* E% W
set-plot-x-range 0 xmax

/ R- i# ?4 b5 i7 y! J3 U7 n% Z7 h
" J2 O; R2 U! b0 M* B2 \set-plot-y-range 0.0 ymax
! C. q, f2 H2 C8 x9 Y
end
- H0 F9 I8 w; `% t. ~% G6 Q5 k1 J: @8 f& W& o
to do-plots. m; d( j3 C7 t! K+ R* u
set-current-plot "Trends-of-Local-reputation"1 }" s* q2 X: M  W7 j' a
set-current-plot-pen "Honest service"/ P; I$ H$ ?- p, v8 {9 ^
end
+ i7 f, u" {% d8 Z" G( T
$ U* Q" Q* Y$ c; y[ 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.$ s4 R( A0 g" f/ Q) u
' H9 v- v$ J) v- K6 m* ~% s
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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