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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:
! }! R- Q; Z4 p3 mto do-business + Q: m, L2 R' d! k( W
rt random 360
* E- [( b6 C% @1 T3 K- Z fd 1$ r6 K7 j5 O6 V% x( i. l
ifelse(other turtles-here != nobody)[
' ]% C. J. J; f, @& D( \   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.
- t, x  P; l) m2 `" G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 c8 U1 H; M1 a% y* L) }1 x; ^5 f* W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 w" x' b* S3 `4 V( H- n$ B   set [trade-record-one-len] of self length [trade-record-one] of self) F2 q1 Q( O3 l0 F. r1 I) r' W
   set trade-record-current( list (timer) (random money-upper-limit))
2 O0 @! n( R+ @0 I3 a% Z
+ K6 V6 k- i( G1 g6 B问题的提示如下:
6 Z, @% Q' c0 Y% S3 k- r1 P5 J! z1 t  h/ c. T
error while turtle 50 running OF in procedure DO-BUSINESS; Z, v2 o* }: F9 ?9 v6 v1 I+ G( J
  called by procedure GO
% `5 o  N2 y4 `9 S; dOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" P& r! E, ?0 d) d9 Q/ v  F
(halted running of go)' R  y: b% U" |, a5 s5 Z8 h

+ a0 J  y$ D! E# Z: A5 v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~~+ I3 z) Q1 ]! k) P+ G
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
+ R! C/ r' ]8 r4 {3 sglobals[+ `8 N% E6 x7 k, }
xmax. ^$ c* ?! H- M6 F. s
ymax& x; ^& J: z: q6 _
global-reputation-list' I, ?3 o* e0 o6 l5 F, D! V
6 ?4 X  a6 }! Z
;;
每一个turtle的全局声誉都存在此LIST; u2 H2 w' m4 g
credibility-list
" b, J; _# c8 O;;
每一个turtle的评价可信度
1 f6 u- V! X8 |2 A' R7 ghonest-service) `& k3 G3 `' _7 g8 U
unhonest-service
6 s8 m5 J3 |4 Y; `% roscillation
% \8 y. P3 T) ]  g/ Drand-dynamic
- o$ [6 i/ y; q# u, G]# Y  P2 O8 N( O4 M  n

1 N) c8 H& t8 w: cturtles-own[
: O& \: r4 p8 s, Q& R( {trade-record-all
6 I- a, c  G7 @( o( {;;a list of lists,
trade-record-one组成
, }5 {( q' s" j- ttrade-record-one
3 Y& G; i# J& R$ n;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) D1 D3 c- w4 O, [( U) T
; ?3 \( r' ~5 N& V- C0 h9 f# `( m
;;[
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]]& K9 t5 K& D9 ~3 o6 Y
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]
+ O" g( f9 [5 ^4 |# B3 N  e2 D& Ycredibility-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
0 L" l% |- A: P; ~& xneighbor-total% l" r7 B$ Y) L- }; e# P& Y
;;
记录该turtle的邻居节点的数目0 I: T% [* l3 A. ]& E" R* T& x
trade-time" F. Y6 Z6 c( Z2 z! l
;;
当前发生交易的turtle的交易时间+ T/ h9 r) K6 y
appraise-give7 F3 S: ]9 N8 E9 U. Q- I6 c
;;
当前发生交易时给出的评价: a0 B- J. _* X# t, P- c" E- u8 `4 {
appraise-receive+ s: B( p+ e, y  U
;;
当前发生交易时收到的评价  c$ l! J- ]! Y8 s) I
appraise-time4 j( R# v& Z# _# A+ l% e# u
;;
当前发生交易时的评价时间, m, ]9 \0 S% x3 N; w( z8 S& r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 z7 C# o% c; \1 r
trade-times-total
4 B8 i8 n# F: z. Q/ P2 g;;
与当前turtle的交易总次数
! J. a! v+ K& etrade-money-total" p4 S" H5 }! e  ?
;;
与当前turtle的交易总金额
# l- z1 {( d' M3 qlocal-reputation& P( y: x" }7 y; w  C0 i. I
global-reputation
7 e1 Z$ C& p, E0 |credibility* J9 e4 h$ x) i, ^* \: R
;;
评价可信度,每次交易后都需要更新# m, B* X4 C! F: |
credibility-all
5 m. E: k/ {# T( Z) f) H% v;;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2 l2 r$ h# d$ d& X; u5 w! k
0 ?6 e0 d. R- U4 E
;;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
+ {+ z/ [5 r! M' Ccredibility-one
6 {1 m% o  g5 b9 `6 e% [8 K;;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; I7 v. m- ?: v5 d
global-proportion7 s6 G& Y* Y( K9 T
customer6 @0 r% e4 W9 e
customer-no/ h1 A. z. ^( ~7 {0 m
trust-ok
1 A  A7 x' B  E8 J. R& Gtrade-record-one-len;;trade-record-one的长度7 F4 z) m4 m. Q/ L
]
' i7 w+ |" _* ~% Q0 D0 ]/ e: W* J& `
;;setup procedure/ u0 r& E* U( ]6 d/ Q1 E8 Z2 R  H
0 N% Y9 k) @" G% ^/ D+ y+ @% o
to setup
" i3 ~( k, R: L+ j$ T" Y# ?: U0 p1 U# E2 K; `! E( p& @+ G
ca
6 k2 O: N! L5 Q
& {7 k6 G' ]! Y( P, E
initialize-settings

8 _9 L# W1 h1 m8 y6 h( \
+ \* I4 \- C- K6 q* X0 lcrt people [setup-turtles]

7 a  F% k7 t% K! x
* o: C+ q. i0 ^# p& j7 Y! zreset-timer
. P% W) b& m8 {! c+ ^2 K4 v

( f3 Z/ a6 j6 O+ Jpoll-class

% O' o: ?8 v8 W9 l; H$ f3 V* ?! F3 ~0 K2 E
setup-plots
% o, _# _9 t+ R: b" y

" F+ }9 U5 j8 s8 }2 o# ]/ e* Tdo-plots

8 j6 p' O- W% ^end- [; M2 X) T# y$ L1 z6 ^! U

: }6 T! U. ~; g) }$ Y; i/ qto initialize-settings
* @+ `1 o+ Z9 B2 R6 a9 ~8 j0 v
3 Z/ P. `3 E" {# Z6 x. iset global-reputation-list []

8 L0 c4 X: @7 R! u
( A* W& i+ v6 _/ k% r  y) \set credibility-list n-values people [0.5]
- ~. ^$ _- Z/ F) h, f* B* X
$ {* T2 l' f2 R% q& N
set honest-service 0
3 Q; G: O8 [; i1 n: _
  D, @- O/ Z( c" G6 H. b# k; M
set unhonest-service 0
' y% ~: P8 Y0 S6 a: e$ \6 d

2 g- t7 C: h$ w0 Dset oscillation 0
% E4 j) ?0 z% P- K( r
# C. q% j7 m# h/ s) V
set rand-dynamic 0
# Q# J# i+ R! U: H
end1 z( \% ~- u5 |! A+ V. ]

1 R7 x9 t  r) Bto setup-turtles $ e$ X1 ~: C% Y4 c* T5 J$ R* E
set shape "person"7 X- b0 [: i) F/ `/ A1 R: W* Y
setxy random-xcor random-ycor
1 x& ]. Q9 X- ?' Wset trade-record-one []( s- c5 I2 T5 Y& ?

! W: `8 R7 d9 W2 z1 lset trade-record-all n-values people [(list (? + 1) 0 0)] & V4 {+ y3 ^/ A0 k+ j4 i2 c

3 o' l4 C( m7 sset trade-record-current []( e. {7 n" {5 @, z& q
set credibility-receive []
; M/ L9 `/ u. d0 p  Uset local-reputation 0.5, Y8 X; O; r7 v: K0 ~% |
set neighbor-total 0) I) w  [7 \" L6 |
set trade-times-total 0: G8 k7 l( U& V) A
set trade-money-total 0
1 R' P0 t: a) d  \9 j1 N$ oset customer nobody
9 |. {. R' t: v3 z: [6 A9 Nset credibility-all n-values people [creat-credibility]
3 I0 }4 ?% v- `! ]: @set credibility n-values people [-1]
0 @: ~+ i$ R  [6 n, l3 F2 tget-color
: r9 t7 }  M0 |" |" h" D# G

9 Z- i# O; w; H, kend* r4 {" `0 {! z7 L3 V

" }! \2 T- |, K0 R  Z6 \( s) \4 R) mto-report creat-credibility
: m! g; C  {$ E) ?report n-values people [0.5]; p( k: c& }2 b1 }# n" y+ Z0 K
end
1 f! {" x8 h. Z6 z2 Z& W# f' X- l5 L9 u: {
to setup-plots
# l; t; _, K- M6 P2 \+ \( d( I" R. ~
set xmax 30
  _* d: @, i  r0 v8 Z5 T" w  _2 z' `
! w* w' W$ r4 P0 ?7 S- Z- o
set ymax 1.0
" f. h! M- q9 |2 }( P/ X& b/ [

3 T# F) d, W6 ~6 R" F7 @! cclear-all-plots
9 q  s3 D8 o. ?7 u) A; p7 m

) n$ R+ O6 R3 H1 H! l1 _5 K  psetup-plot1

6 C  Q" t$ b+ a! d, D
! r) Y/ R3 h' p0 U( f0 rsetup-plot2
' ?, y: J9 _) O8 w' m+ M
# l, x: I0 \0 g. i
setup-plot3
( P* ~3 `% r! T& a( X
end
: v( T* ?1 Z- I& c
: n* w, b" `+ z3 l;;run time procedures: ^# ^" C8 P  X# B& z7 b) r7 L) Z

; W; q3 H! y! u) o. G( C3 [to go
# [' s" m+ z& Q4 b
. q, I# [% a7 Yask turtles [do-business]
4 ]  w' a4 Y3 t% @+ C
end
$ p' d4 ^5 @9 p5 S4 G, G/ Q
6 O- f+ x3 k6 I2 d& j9 lto do-business 4 R$ s: U* F1 b$ z9 m

* O  r6 \' X9 _5 v
- K5 w1 j; i. M+ g: |# S- mrt random 360
/ r2 _8 n+ h. ^8 |! |! o7 A" a

! Y( R5 u' H- i" V, M: I9 o9 r, mfd 1

. f. Z1 ]7 ^, X8 `" ]4 J1 g) z2 L/ A/ y1 j( I1 t  z
ifelse(other turtles-here != nobody)[
: B  `1 \! {8 O- \+ L8 K
. ?9 l! e! z: e$ u1 N# _
set customer one-of other turtles-here

% a4 ?/ V) j7 @/ L$ M3 n5 M8 @2 [9 ]; s
+ o, q, n: _. D5 t' Y; n;; set [customer] of customer myself

3 A! R' C; K( u/ E, t* k8 ]
8 G5 r6 J# U/ s. Zset [trade-record-one] of self item (([who] of customer) - 1)
- C) T6 ^' ?7 q+ D" |[trade-record-all]of self
3 b( }, A) E; L& \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 y1 ~7 `9 c% Q+ t
6 L' O+ V& r! [0 I/ U0 G  j
set [trade-record-one] of customer item (([who] of self) - 1): g6 X  T6 b" A3 z5 P
[trade-record-all]of customer
* ~/ }) ^+ ?/ T4 t# _1 I7 b

  V/ Y- O6 W% j9 C, s  oset [trade-record-one-len] of self length [trade-record-one] of self
7 a$ s) b" N6 p

1 D. O' i7 \5 Z" f2 S9 S* h' Z  E2 pset trade-record-current( list (timer) (random money-upper-limit))
  _. M8 }" @2 ~( h

3 W8 j5 F1 s3 rask self [do-trust]
% z  @" e1 V% c2 Z% x/ l) a;;
先求ij的信任度1 v  r: x2 [, b5 ~2 _- k

, j. M$ P9 h4 e1 Jif ([trust-ok] of self)
6 w- f: {3 a$ K; v$ G: }( J;;
根据ij的信任度来决定是否与j进行交易[- k- O/ O/ z  w2 j/ O6 ]5 P- u
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 @  K  W, x. u: Z$ J$ t2 c2 y* z/ T- M4 ?1 U) C" N/ M2 b
[
6 a7 i3 J4 u. i  s9 {
# L0 j, P6 T, X
do-trade

% I- m; S! k# W+ Z; c8 |& L
) `( `$ D& M4 aupdate-credibility-ijl
/ `. H4 z7 n) c- V3 u- ^2 f

) X: u. N1 n1 V5 k* U9 s6 Kupdate-credibility-list( _" t  w8 I+ F& i: Z5 J

0 d% u& n* O+ Y( u! p/ C
& {* a* l; Q/ h2 B( y; ]9 uupdate-global-reputation-list
4 E% Q2 ^% h! X+ o/ [# V

. |3 c  ~( X3 }poll-class
' X4 G5 y- A" H+ P  w) P
2 u- _) u6 r& D* H
get-color
5 B$ j& k7 W5 Q  G6 ~
+ N3 L; q) `" ^3 y% D( ?7 O
]]% y6 I0 T% n" v+ e
: w. ?2 R. U5 e
;;
如果所得的信任度满足条件,则进行交易# Q* p# j$ O, i0 _: d

2 v' |' g- o2 r- s[

3 R2 k  N+ ]% G" n0 m7 o: z) o. F; o" I: ?1 e2 @3 [  e! o/ G
rt random 360
% G3 w2 B" W. Y8 `8 [

# R8 h6 o% l! E) I1 v1 u' Q0 Sfd 1
$ x  h: U' D3 f$ |% a) M
5 I+ |% E6 v- x; k
]
7 R' j) y; {6 e6 F5 i. U1 \7 }
9 e$ R' x8 s; X  p" p9 {
end
; h8 k6 e+ o, Q' @6 z* o( g2 |# E

( q& y* ]  |" E: I0 P+ |to do-trust
' v+ Q- ?7 M; N, ?set trust-ok False
1 m- t; y" z' w7 e# P$ }
# U, p3 q' K' M% ]2 C9 L3 b% j' y8 i
9 P: N! X" e6 p! B' Y2 N# k
let max-trade-times 0
9 w6 J  ?9 a7 g7 s: qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 D3 `3 `6 ~* T
let max-trade-money 0) _4 ?7 c( x8 Y( n# d
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" K) u% c8 @5 s! T3 ~0 [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! |7 ^% t/ ], Y: K' |0 ^2 J
5 U' t4 R! w1 \" n# W2 \( B7 ^6 h
' n& n7 n8 o. y: E+ K& p
get-global-proportion+ @0 R1 g+ a2 p
let trust-value9 o* U' I5 `/ f! C; {; x7 Q
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)
5 d5 u9 y) Y. J$ c
if(trust-value > trade-trust-value)
& s0 S- Z3 F% p+ f4 B/ j! D8 r: ^! r[set trust-ok true]' u. q, j& |9 m& D
end5 D7 D& |- S5 @$ N% J- _5 C

) D) w3 d) A9 k! Eto get-global-proportion6 t' d& ^0 Z/ m& z" W5 x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, A0 d8 \8 ]; ?& s[set global-proportion 0]% P, ~7 h; n" l7 D
[let i 0% B& h3 H3 v# W3 p9 K2 |
let sum-money 0- {$ V5 k6 w/ Z% D! s6 x
while[ i < people]: k+ e# O( h2 X9 R) h
[
( H6 v: \& g' m+ h/ s2 b' I: gif( length (item i
, @' }$ q5 S& o, {* C1 Y[trade-record-all] of customer) > 3 )
% o* J/ r8 H$ O& I' ?$ N
[! }5 e2 j1 V$ r" g2 a
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 G/ t) a9 @- L9 h]+ m# s; D# \3 ]9 W! J7 m! s# K
]
# W+ T1 C- x4 u: v. e1 v3 X. mlet j 0
3 A1 ^2 T# \% plet note 03 ?; ?/ a) a, G
while[ j < people]) F7 [* W# N4 l& F' @6 Z0 F& T
[
! W/ L/ W8 y1 R) X, s$ t* Bif( length (item i( M  o/ ?  ]& m0 u) Q: J
[trade-record-all] of customer) > 3 )

0 ?" M0 R. L0 K" ?" J1 \# u- t/ r, m" S- I[
. z& ^, d+ |. i" q# d9 |6 c: d: x, }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 k1 ~  k& l9 J  ~: K5 _- c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* l3 e+ O7 ?4 w* \4 c+ L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( @6 Z0 H7 O$ I]" M* E1 J% _1 D0 d! m* e1 g
]
1 D/ i6 \) r0 p: q1 f# }set global-proportion note
$ l4 t$ ^' s6 y( z. F]. Y4 V( X6 \* C$ P% I/ J
end# b: ?) g/ G. M5 Y

) j4 @  H# [' K& Gto do-trade$ ?0 F1 t0 J" d7 T
;;
这个过程实际上是给双方作出评价的过程! z* _  ^6 J7 h' e( Y9 ^7 m- \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- n2 B* {; K: M0 L( Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* }- q/ T5 p; q$ f  R+ H# g# ]5 k
set trade-record-current lput(timer) trade-record-current- h% C6 q' s; ?
;;
评价时间
# m; S+ [% B: w6 Hask myself [* f! u/ V7 l, K! P4 E& \8 X. @/ j/ `
update-local-reputation
" o& ?# F) u, ]set trade-record-current lput([local-reputation] of myself) trade-record-current2 @3 _' u  N1 F$ q
]# W0 p* j( N5 r8 j
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- g$ c3 ]( h# K;;
将此次交易的记录加入到trade-record-one
1 T! O8 Y- n/ D# F/ H6 oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- X1 y9 `) g( G6 n+ [; C  z$ S% Wlet note (item 2 trade-record-current )
/ ^$ X0 ~  Y. t6 N4 U- Fset trade-record-current
* P0 B: G, h6 R2 f: S(replace-item 2 trade-record-current (item 3 trade-record-current))

/ {  A  w; S. A- V2 C( uset trade-record-current
/ C, i8 c" a8 C3 K" T(replace-item 3 trade-record-current note)
$ [& y6 e- M7 h4 J) `
# _& I- }: A/ E7 T5 \+ H7 _4 t5 o
  D: }* V7 A# y/ U$ z
ask customer [
3 V9 m: ~5 r9 w4 m9 m& V* Bupdate-local-reputation
- e" }8 Z/ ~, e- E' Bset trade-record-current5 N. Q* N9 m. C5 X
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  o8 W, k% S* W3 p- [1 K]" H9 f5 t, W) C

1 Y2 F0 H$ Q3 A' H- b

8 d+ _- C" {2 Y6 r! }% eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 M6 S, I" C2 E6 d
& n( T" Z& {. [) c9 Z9 G* O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) K9 C' v% n3 i8 J
;;
将此次交易的记录加入到customertrade-record-all
$ a2 e- c& x) p5 @; send
- i$ r, n8 s/ U# [
* ~9 y" o8 F: n1 l( ~& ]' jto update-local-reputation& Q' C- ?+ _4 Q* ^8 D# p4 w8 V
set [trade-record-one-len] of myself length [trade-record-one] of myself* s" k+ f9 w% Q9 J1 K

8 J9 a$ ~' |- W7 F. ~
. f  U) z9 X, ~9 a$ n;;if [trade-record-one-len] of myself > 3

5 Z- s5 E& e% W, y+ i' Rupdate-neighbor-total  R) C, E0 t, }4 p( v. f1 z
;;
更新邻居节点的数目,在此进行( y. B$ X6 @, d; a3 ^# Q1 ~+ H
let i 3
8 M" y! t* |" u( glet sum-time 0! i0 E7 H0 ]9 \2 Z3 W+ R8 D& X
while[i < [trade-record-one-len] of myself]* I  r; B4 p- [3 I6 i
[
' g& r7 q+ }' h( j% dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# P# n! Y8 Y' n
set i0 d% u$ S& V9 l! L
( i + 1)
0 o+ f; H6 w; n; o3 ~) y6 w
]8 J7 q  Q9 n1 v* i9 Y9 U1 r) ?; ~
let j 3
8 [$ L! E7 |$ _, Jlet sum-money 0% a# _  x/ P0 z2 D/ E
while[j < [trade-record-one-len] of myself]
" L8 z- L8 B$ \[. o% I0 h% M7 l  ]6 N' ^5 G! `
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)
, l' G/ J' F+ V! N; v6 jset j
! I# j* D- s3 z1 Q( j + 1)
* X2 _5 H# ^5 t: m, m; p
]* K% X; k. j* l9 K, ]7 S
let k 3
  g3 m, f4 \$ O* g# x8 n( U  ?5 ?let power 0& Z+ \+ E# Y5 d; N
let local 0
) S" ^' c' K0 O* K; a5 Owhile [k <[trade-record-one-len] of myself]# E9 `/ r" P+ O+ X" V# D3 b* \! k
[) L7 \* `7 C3 N  p% ^0 ^
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)
) H6 L9 y. x0 C( |set k (k + 1)2 \2 E# x7 w! Y3 S+ Z
]! o/ J; t9 d3 n2 M  U- u, x) k
set [local-reputation] of myself (local)
, l5 }7 N9 A- b" S/ c0 Lend
) ?7 O+ z3 a5 m1 N
6 d1 f1 @$ [9 i- }! yto update-neighbor-total
$ `& ?- V2 k4 U" e1 H7 Y8 T
0 `8 o. y4 a7 x$ e! |# gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 l+ H4 Z: p) b8 U2 j) _7 U
! o) d  s2 Q' v; }- S

- f: _# Y  ^$ j  aend7 r7 I! P7 @- a9 I/ A

3 e8 [2 @' x+ \1 m7 ^2 N) Xto update-credibility-ijl $ Y" E6 E. k- U8 s+ H

; \) i4 j% ~+ `* o1 i- x9 T;;
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。, R- k" {4 Z1 t# J
let l 0
/ V! s. D' U! Q9 B! e0 ?while[ l < people ]/ Z* Y; `1 {- C
;;
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
! g5 g3 E; |! ^" b$ z[) i) k6 A5 n1 e4 b4 W
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), w9 P/ f1 k8 ]( v( i* t
if (trade-record-one-j-l-len > 3)
- Y* @! y7 T! [1 f[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
$ i( p/ C0 t+ O* [8 U1 Elet i 3
5 t7 T# ]8 U- m# H4 ]% o' h: S; ~let sum-time 06 v0 l8 V1 B' R/ ~, J$ m
while[i < trade-record-one-len]5 T* ^( s3 h  C6 J9 q
[
! {/ H3 j2 `( K/ Gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ `7 _8 N6 P3 c0 Hset i' c1 F) K3 k* L( L/ M, B
( i + 1)
) z: ?3 ~! `- k, y; p
]
0 Y; J! \* \" a: ~. Glet credibility-i-j-l 0$ j% l% C7 a/ ~' D) f/ Z( i
;;i
评价(jjl的评价)3 i  t/ O1 q* `9 u3 J
let j 36 [: @2 B4 L9 Q  I
let k 4
2 T* H) A: W$ l4 x* @, owhile[j < trade-record-one-len], A  O+ p4 g- ]* T5 |
[( z5 _+ F2 T- m3 {+ u1 `
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
$ l1 ?1 l, w& D" [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)7 C3 n; b. L! @& S4 l5 s  y1 I
set j' w* B( m- Z' A  E. l( g4 a5 e6 v
( j + 1)

& m1 S& O+ @- v+ n+ f]
6 H- P: V: n% V/ f: i& g7 q! Jset [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 ))) M1 \* F, ~5 Y" p
$ t, z) _6 h  y

; p7 L- d: o6 j% glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) G6 U+ E( a+ `0 H9 q;;
及时更新il的评价质量的评价3 G& `- J3 u* z; a, I; c3 ^
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* k3 a5 z, C" D) c% {4 M; z+ ?0 qset l (l + 1)" G3 b8 K8 Y  e
]* y4 m* K; A. O. s- s, e6 \5 K
end8 Z1 g% t( o1 ?6 i0 \9 j" ~" J

" j# e: p3 }* R) eto update-credibility-list
1 D$ p0 A; o% `let i 0
0 b' r1 d2 x" p% z1 B9 {) qwhile[i < people]
7 P9 q; b- V2 C* x. r8 v+ ~4 m[
, f2 p7 E0 T" Tlet j 0& K" t& O! k+ G! r, a6 X) W. m) j( Z
let note 0# C; J; K/ o' I4 K7 a/ g
let k 03 ?0 L8 N7 o" t1 p# M6 e. l( W
;;
计作出过评价的邻居节点的数目
2 L3 W0 O. _1 r+ Lwhile[j < people]
& r( t) {9 w8 W3 D  L) s* X% Y[. B& r; p. k+ Z# x7 r, @5 u: {
if (item j( [credibility] of turtle (i + 1)) != -1)' J- G! a- M$ p5 }9 d
;;
判断是否给本turtle的评价质量做出过评价的节点4 o( J1 @3 W  u$ ]! \/ _
[set note (note + item j ([credibility]of turtle (i + 1)))
$ w1 X8 `! K3 C& e$ g- L' K;;*(exp (-(people - 2)))/(people - 2))]
5 a8 n* \. x3 U8 J2 C0 o; B& H
set k (k + 1): ~, u4 L0 R1 b8 Z% {
]
' ?0 J! v7 z2 Tset j (j + 1)" o) r( @! {% G; E$ z; X
]
3 g- [( i+ M2 G7 `+ \% Aset note (note *(exp (- (1 / k)))/ k)' k1 k$ \( d8 O2 X# t  C2 ?8 z6 w
set credibility-list (replace-item i credibility-list note)
7 k, s1 N5 ~: L4 Fset i (i + 1)
7 }6 s/ x- A8 N2 t]5 X* _( H2 U  o9 t# }
end/ A! z; K2 t: e

: K! s8 Q0 k( _9 q3 m# Eto update-global-reputation-list$ o9 J1 }: F) O& l+ M0 ?& r! k
let j 0
* n1 ~0 v3 p0 f6 ]; x) P4 a4 ^while[j < people]
5 d% v4 y' n  n5 t6 \, C. [1 F# f[
2 X# j& p; ^* M! {  h8 @/ m- h% nlet new 0
( c3 R) V& }& O! y% Q- c;;
暂存新的一个全局声誉
  u# O6 L' n5 q5 o. U+ blet i 0, ?9 Q, g, R' H% f8 I0 S% x2 H
let sum-money 0% e1 z0 F) S, C5 g- o4 i9 X+ o( T
let credibility-money 0
/ }3 N6 {$ L. k; c" z6 F4 ~1 Nwhile [i < people]
6 F2 E9 K2 W# H  N/ K' f. t/ ?[1 }( Y# V' O. o. N2 T: @0 e
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 u& |  ], q0 ?( Y5 h" Aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 S4 x" e# T& K4 i1 }+ nset i (i + 1)& O8 |$ W/ x5 \8 K. C2 C
]5 x: ?+ Y% M1 \: d8 l7 D
let k 0; T9 b) z" D, D* s$ X
let new1 0- P( ^( T( x6 u8 r
while [k < people]
! P: M7 }$ i, k1 R9 O[
. h2 z& y/ ^/ Aset 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): N9 {- X4 K: R8 j$ B; A3 L- _2 T. E
set k (k + 1)
2 y5 @) c3 [+ i. N2 N( T]2 C6 ^/ C9 C% O& P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) y+ p( p6 f2 I( Y% o
set global-reputation-list (replace-item j global-reputation-list new)
0 Q' ^4 B# v3 `+ t4 `7 e+ \/ \2 gset j (j + 1)
. P9 L9 O7 X% {; o]! G5 g. o3 I! M% ?) J# `6 s7 L+ i7 H
end$ U) W0 A7 y# m; `# c7 {) g7 s

$ N3 s  a+ {' \, R5 k  Z( s- I) g
/ \0 Z) {( H, B6 a. u) _$ S' m! @, T; d0 z. K- H1 M
to get-color0 H% A3 y6 D- D+ G7 G7 V+ Y

1 }9 U4 p5 C5 F! v; V, Uset color blue

4 M3 A; Z# }& F5 _! m4 \5 N, N+ Nend
; z  C2 ?; k  p. l% D" J
5 {9 C) P7 ~8 k, q& O3 sto poll-class
, q" p5 E! W! D) s1 j, h* Yend
8 U( i5 m- g; d0 ?
$ l1 h- {8 G7 w6 U2 |# @& A, }to setup-plot1
& m: D# U6 w7 Q- k5 ^1 \. @" T  P9 q8 K7 l* w1 J
set-current-plot "Trends-of-Local-reputation"

( t+ N# k$ a  ~5 w4 K+ m$ m/ M: `7 ?+ F% l
set-plot-x-range 0 xmax

* A1 e, |/ B# S4 y+ E3 M% G. Y" @  a" O8 ~6 d% R  Q
set-plot-y-range 0.0 ymax

) T$ W) v: N' j# B2 Fend0 o0 i  K) {' E' {6 R

4 g9 Q5 a0 r& Q7 H8 X5 c2 bto setup-plot2
: A6 N& {  z( D. Y6 w9 p2 `( W: _0 U( H" ^: M/ J) M
set-current-plot "Trends-of-global-reputation"
9 A: {$ o1 U6 I! g1 _" ~# m

* F- n! C* @# e: \1 Y9 xset-plot-x-range 0 xmax

; U# V" b$ N' o/ T- s
7 e/ S: p0 S1 N" @' q% q  d5 `. |8 [set-plot-y-range 0.0 ymax
  _+ R8 X" C+ O
end
% r3 G9 }; Y) y, E. o0 q1 V& l( }# O% M, l3 G0 E1 ~9 H
to setup-plot3
' m& ]! A% X. g3 E  t) U# k6 Q# l( m
set-current-plot "Trends-of-credibility"
! M+ Q! J4 E4 o5 k, q
! n$ `8 }3 T/ S4 f$ m$ N
set-plot-x-range 0 xmax
9 s3 C' P8 w3 }, z8 [% C0 B

( ^# H6 L2 Q% w) I+ {: Pset-plot-y-range 0.0 ymax

6 S- Y; g" r; E1 x* ?end
+ }" L# H; h% w4 l$ L. R: i
/ `* e" }4 U3 nto do-plots
/ K! z3 Z* ]4 dset-current-plot "Trends-of-Local-reputation"
% d8 t; c/ d  ]set-current-plot-pen "Honest service"
; l  J; G& p9 \+ `. V8 D& Mend
% D: p/ u5 i5 _" c# h  J  a. d9 U5 p" v
[ 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.; A4 T& X, |) j1 G
8 d* v; m- f5 K) _2 k
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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