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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:
0 K) o' ]# }$ a' Xto do-business 3 ^/ w" O+ z; \; h9 o" y
rt random 360
  e% f9 F$ r: H- g fd 12 P1 ~) ?% n& p( X# p
ifelse(other turtles-here != nobody)[
' K/ `" J+ }, ?, v" r1 x* K   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.
1 r/ A. g) i8 o4 E  Y2 w   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 _1 R7 j. R: \3 E7 ?
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ V+ [1 `5 x; j1 J
   set [trade-record-one-len] of self length [trade-record-one] of self  {; ~5 Z9 R& q# U
   set trade-record-current( list (timer) (random money-upper-limit))
9 v* _* i" y4 s( Y
+ }1 ?/ {7 X! c0 y5 h问题的提示如下:
, e+ f, _1 l- B8 W
$ h9 o5 l" ~& l, W) |2 Serror while turtle 50 running OF in procedure DO-BUSINESS
% I; `; s+ J1 X  called by procedure GO7 F# A2 K& y1 h% {3 M1 J9 v* O& @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% v) k: E7 i- @  k
(halted running of go)+ [4 ?' B. G/ U

2 b1 G/ x& G( b8 B6 |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~~
# g. Q$ i& ?' R4 @0 z. d7 r* Z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
' S' I+ E5 g8 @2 U( }$ Cglobals[2 I- C, X) F% r( Y9 \
xmax( o9 F# g1 h) R1 P$ X4 V
ymax
' x' ~$ \0 C% H, H$ u) J/ {global-reputation-list
/ ^6 Z- g* s/ c& E( z1 h0 [" l' g% ~4 ~- G6 r" B
;;
每一个turtle的全局声誉都存在此LIST9 X" \3 A) E8 Q- p: d6 m
credibility-list
; c9 t" G  s5 G& R* E5 u) c9 p+ r;;
每一个turtle的评价可信度& \+ d( Q  z/ p! I" h& X% v
honest-service' D( j, ^/ p% C
unhonest-service1 S# E. q9 t- `  P1 O% m* k
oscillation7 Z, J" x9 }$ p9 A
rand-dynamic! P" l& P8 I0 K+ B& t# h- k
]
; b( F8 p5 y( s
" J0 ?) E8 ]2 @/ Eturtles-own[
7 |# X* c0 l6 Etrade-record-all
' L/ ^8 p+ t& d/ m4 n# `;;a list of lists,
trade-record-one组成' P4 c7 f/ A- B/ e: n
trade-record-one9 e3 s1 @/ A' P. e! G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 y/ I- I$ C5 v: U4 I4 b- H3 a* x

# Z- h# F' e: \8 U* }% K;;[
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]]
# C" U7 O. ~& v5 g$ o' w# w0 l6 Jtrade-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]
6 O# o1 }+ ]: q2 xcredibility-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& j3 t# `) a+ U3 I
neighbor-total
7 m' q' ~3 }: J' ]7 _' m' N% m;;
记录该turtle的邻居节点的数目( u7 s6 y9 Y9 M% v  V; |) M
trade-time; |- ?# l6 E% j7 [3 O' R5 R* K
;;
当前发生交易的turtle的交易时间
7 x9 F7 f3 @0 [9 G# ^9 \$ uappraise-give
4 V% M. @& z: d8 R; q;;
当前发生交易时给出的评价' V" T9 |/ A' @( Z  E
appraise-receive0 O. m5 N! E# o6 q! R
;;
当前发生交易时收到的评价' V. ]  p+ Q0 I7 C8 t4 P$ w& n$ e
appraise-time; _( D8 H% _5 ?0 O
;;
当前发生交易时的评价时间9 ~. r5 U( i0 R0 S! A4 y5 c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; F- U1 w5 t9 g# x2 _- Q) R2 dtrade-times-total
" _  v& f/ T8 u2 A! S2 x;;
与当前turtle的交易总次数
- R, e4 T9 b* v- R# Ytrade-money-total% l7 j8 C, y  z8 {0 f; s% o* L
;;
与当前turtle的交易总金额
$ a1 A: `- ~' y) p$ d7 zlocal-reputation
- d& g0 e1 L# s7 U  @global-reputation" ^6 f: G+ y) A. B: L* H
credibility& W! w" u3 }- u3 S: d5 o0 L. y( B
;;
评价可信度,每次交易后都需要更新
3 _$ @2 `+ c" ncredibility-all: X# k/ a. R. \
;;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
( g/ ~3 I3 R* ^* D5 [! ]( K0 _! J# O' }  [4 G) X5 S% Y5 g# F& G6 ]4 B
;;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0.57 G3 Y4 y2 T- p! U- i6 h, R
credibility-one
) _& `0 v( V" [3 ?0 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
6 x6 E0 k4 g( k: e; Q. C: Qglobal-proportion
8 ], P- q* z. h0 i: L7 ?customer
, u& P- }1 X' [( S% wcustomer-no& m& q; y+ a/ F3 g; v8 T2 d  K+ w
trust-ok1 J/ ?$ k' L. v  j* h9 ]1 o4 G
trade-record-one-len;;trade-record-one的长度' G- S, m8 S7 ^( l" d1 R" n) o
]
( I7 R2 z. Y- F: B6 B: T6 v  A2 T! L6 p% |. U5 N
;;setup procedure0 N3 p9 i) K5 L

2 J/ _0 ]+ H! Q) y7 lto setup9 a: L1 k  L% Q4 E+ G$ J, E+ }

2 i/ B; K4 W: tca
+ w' b8 `* y8 n7 `, k6 }$ ^% H% q

4 G  l8 {9 A5 q/ p: |1 Rinitialize-settings
3 d! s/ e9 u" e* B7 `
1 L) u  s0 d& _! _: o+ j; F
crt people [setup-turtles]
* g2 o' S8 e6 u0 V0 z; r7 s2 i

4 H, r' ], p# R; r/ Areset-timer

3 Q1 r) `9 w" q3 l! K" q3 e1 Z/ b" X( v3 d
poll-class
! u; b% e% X. G: ^* ~  O1 ]
" m& e; a6 q& Z% a1 h% _+ S" A7 e
setup-plots

& B) F. f, f8 S, Q" G$ F& }7 x
6 V8 R/ ]1 @) D( Ydo-plots
/ n  h2 G" A: Y( N: H7 I
end) c7 L  P7 J2 @6 Y' e
3 Y5 p2 b) u& ?; l; E) }
to initialize-settings
6 {7 i# G8 p9 ^, K( c, S. d& y" f# R4 ~* f& ^
set global-reputation-list []
( r8 N* _! N) M0 z( S

, B- Z% ~' e# M9 R7 oset credibility-list n-values people [0.5]
, F3 I8 ^8 {- E' n( ?9 _7 s) \

- E+ V4 L( ?& b; Fset honest-service 0

- N- c% M+ n, I1 X0 O3 z, C/ \; p
4 l7 `, X/ C' h0 w' Q! H9 Wset unhonest-service 0

9 E/ B, W& z5 s/ q% [5 {+ N* _# r3 N2 |  [
set oscillation 0
9 K. t/ Q3 A) H+ ]2 p! C$ q( e

$ _2 e/ ~/ b* a$ d" Y( f% I6 p# gset rand-dynamic 0
  ^3 s6 G9 }. S0 l; ], P' V' z
end
. h/ E( k  c; j3 I
, w- v/ x" u) tto setup-turtles ) T6 Q7 X3 P- S4 k# O$ f+ v- |3 F
set shape "person"" G- O7 G, E' k; O
setxy random-xcor random-ycor
+ m1 n5 _$ H% k) s  h) `set trade-record-one []3 e+ o1 J1 p3 M+ s% i! Z7 Z& X& r
* w' b8 @3 e! |9 E
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 M0 Q4 V% q, ]0 C2 i8 O

" ?  E# f7 I+ M9 N7 Y; }! Mset trade-record-current []% f; J8 w3 n8 S7 _: H
set credibility-receive []* X8 |5 j! F9 a" Z
set local-reputation 0.5) A2 B! v. p8 [' N/ |
set neighbor-total 0
3 A3 n+ R1 @5 O7 G/ p" @( @, wset trade-times-total 0
# H9 L' a9 q6 e' Pset trade-money-total 0! T' y- Q# K7 x- j# _% G) _1 H( g
set customer nobody  ~3 Q! ]' u; P' q* X/ ?" f: L
set credibility-all n-values people [creat-credibility]  c) @  ?. z. L7 L" b5 x
set credibility n-values people [-1]
' w0 ?2 S1 b+ Kget-color
4 q3 z" f# j& B, z/ A
3 x) S% z" ~3 V' e- }3 y1 T
end( Z( W3 H) |. u; U4 v# P$ o# f

, A; \3 d0 a# H' I" K$ Yto-report creat-credibility2 K3 W4 z1 s2 u  w  a3 h% |
report n-values people [0.5]8 X9 R. z7 _) }* _9 h
end( \. e' ]% k& l" l1 P" x8 E

8 d% c8 s3 O1 _7 E% N' Oto setup-plots
+ v: ?/ M. ~: ]) [2 i5 ]+ I* P/ ~. M' n
set xmax 30
. K2 k) H7 j, C' \: r, ?. m( F7 B4 ]8 ~# @

- s; n" ]5 z; g' D" h: _set ymax 1.0
* G% I$ x2 M6 V( p" p  P

7 y7 A& E  q' U( K& R$ `: _0 E2 iclear-all-plots

9 I, R) i- k2 r) l* |/ i* N4 ]- {) l/ O2 K- }
setup-plot1
. i2 X5 K: y4 b- x; n! ?4 D6 |* |
$ A0 n; Z1 B- Q8 U1 F1 a4 Y
setup-plot2

( A* ]' j  z$ b. v
6 k4 e, Y+ ?7 ^2 U& P5 \setup-plot3
+ ]- w9 ^& A" h9 c, S0 O. i1 R
end- m  o+ l) J# E0 Q) \
  w. A* Z& {  t* ]
;;run time procedures& w: E$ b+ I7 t2 Z1 l6 H5 K
+ X# l3 \* z9 t! Y5 n) I" V
to go" h5 D. Y0 u; f7 i* C

( q* X# ]" i% b$ }% y( P0 Vask turtles [do-business]
7 C+ `: R3 e  K
end; y7 |; h  D) A5 f9 n0 D% U

( n% p* q$ b* x" t( p) Xto do-business
' I7 k# a! [* ~. j2 T

5 X8 R) B5 }5 k3 U6 f! V. y7 Z1 L* D& R* h/ p
rt random 360
1 a& J' Z* b; c* y6 _  X- p5 T. i$ b

! X8 B4 N2 q8 j2 B- ^" nfd 1

" B. U) m. n/ @
; {7 }4 ]7 h  f* b& Tifelse(other turtles-here != nobody)[
- M( A5 y4 O+ q9 g" F- I1 \

% Q0 q: [( C' q3 h6 M& }set customer one-of other turtles-here
& J5 W/ E, N* i* c6 w4 f8 H/ Y

$ R8 W( n3 b" K8 u) j1 H;; set [customer] of customer myself

  t4 k# l7 F, }
) j7 A. p6 ~" N6 jset [trade-record-one] of self item (([who] of customer) - 1)
% Y+ K( F% f! h- u& Q, u[trade-record-all]of self
1 x# e! V4 c" ]" e6 t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 l6 e: A1 w0 x+ T# E" f/ F: @7 J) p

8 |2 _3 t, A" ~- p% E5 N) {set [trade-record-one] of customer item (([who] of self) - 1)
! e" h7 d/ s& _6 [! s[trade-record-all]of customer
# l- n' |5 O, q3 @0 Q2 o  j* C
% Y* Y1 [. ^! v' }
set [trade-record-one-len] of self length [trade-record-one] of self
" @  P, q+ `7 @3 n" n  ?) e+ X

3 [! w7 U9 v4 D  ?5 p- [2 M3 h' t0 ]set trade-record-current( list (timer) (random money-upper-limit))
7 T) n8 t. E% C' e
- o* }$ @6 M: [/ {/ k- N
ask self [do-trust]; h' Q4 O9 Q  R7 M
;;
先求ij的信任度; p0 y/ j* K) |) w- Z- m9 _

$ L9 z6 ?! I/ r* e: W$ Vif ([trust-ok] of self)9 T$ j3 R% R; C  s) F
;;
根据ij的信任度来决定是否与j进行交易[
. U7 Z" W+ S7 n$ a* L! }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' a" n' [2 Y! S4 i. E7 a2 i* _% P" O8 e1 O# {- `* }
[
/ b& M4 L, ?2 w) [4 T; s0 t! N
& x; Z2 |- d( E! _1 K+ M+ w
do-trade

' q3 s: W4 r, N
& t, l$ P7 G/ U4 S- Gupdate-credibility-ijl

$ I5 A; y; K) `. |% |) \
% E$ e2 m1 P0 g2 l" h% Eupdate-credibility-list4 u, u" |9 s7 @0 C& n7 u# \8 V

9 a; S3 N7 Z% o% H4 j) B  `' P" w1 I; |+ U, i+ \9 j
update-global-reputation-list

3 |4 {% \' t6 `( k8 H; d5 E1 z  l, V5 H; \% A
poll-class

! K! R5 c. b# f" v( \5 B6 T) A/ w4 x* f7 g+ ^: J
get-color
# a* y2 K" t8 K/ s/ L

: V: ~0 A" [3 V. ?]]
# f. t) [/ d0 W! b' g& U! ?4 w' N8 _
  [  y8 p% _8 v! u: \) @1 X- R/ J;;
如果所得的信任度满足条件,则进行交易$ i9 m% v5 w) v# e* q5 F
$ ]  H8 l) ^2 d$ l7 D- X$ x) _6 _
[
3 {% S* ]# H0 ~4 H! r

! L, q5 r, L! a" R; X7 G3 ert random 360

8 a& @1 y5 ?; b; S
8 }  y' h5 n" [( rfd 1
+ U6 I4 P. e0 {$ a
* T$ T# K2 }, U/ M( d+ a: R7 ?" A
]
$ F2 M' L0 r( A! v4 x6 L& Q6 i& R

( L0 [& o5 v/ n* Z& s* h1 Tend

6 O4 T8 \+ `7 _: t3 d; \! c; Y& W) c
to do-trust 8 s. ]! P& _2 y  c: h1 }: z9 e% h
set trust-ok False
4 _. H# x5 J: r- [* e$ L% g) t, x- W- |; m4 S& \. p
4 F7 X! o+ A* [6 P2 t  e0 s0 \+ j. r
let max-trade-times 0
+ I, _+ T9 R6 S( R9 R+ M1 @% ^" Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. K, Z$ n1 c( I3 l* ilet max-trade-money 0
5 o7 B0 ^( H8 j8 _8 Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' U. y5 h, T% b% w# S6 Jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): Q3 w$ p9 f. k% l" P- K
6 t! D4 M$ P" [/ N, E
0 z* X' n) K/ X& k9 q  L
get-global-proportion. w, i. k% f* m- D" }
let trust-value
" h( f1 n$ ]+ h( blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* Q( R# `9 E+ Iif(trust-value > trade-trust-value)! S6 X. ^4 q6 F- J# u
[set trust-ok true]/ @7 M, L5 N! P) P0 s
end
- B' ?# J7 i5 K/ C, J8 ^
4 n# M/ V; x- y! [% {to get-global-proportion
; K) A$ c4 a& P# `: p) V0 O) Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ m' ?& U$ _% p- E0 K% u& I
[set global-proportion 0]
7 |$ @  v) f2 A. J+ ?% e  J: I: |[let i 0
. r/ t# Q" o1 N  Ulet sum-money 0: @' {' C2 Z- Y' ~
while[ i < people]# Z8 b# D2 e7 Y; P1 f
[
0 ~4 q/ I& v) I0 T2 zif( length (item i
0 J; _1 p/ |8 w[trade-record-all] of customer) > 3 )
) `1 J& i8 t( [% D- c" P7 [% d
[
, D& A5 T2 Y# S9 {8 H# L3 M" d' x; jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))' V" z  k. @% k/ L0 M
]
8 x0 A9 B) p) @1 x2 [1 @  n]# d  s( H8 g! i0 n
let j 0" B0 z/ k7 {- L) \0 S
let note 0; e; v# v' v# S. v' X6 A
while[ j < people], g5 K. F4 y( b
[
& v- g0 i% o. kif( length (item i
+ ?' \4 b1 T" J5 I[trade-record-all] of customer) > 3 )
# d3 s, s) k1 G" B
[7 n! J% r+ U3 l4 d
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ X( J. S; z, G# ?( Y9 _: K5 S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% b6 F( S: c0 ?8 L. c6 |
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  l2 Q8 Y! P+ O5 l
]* ~. O0 g) W, x5 R4 d/ `. G6 p
]
  s8 C- u# G( oset global-proportion note0 F9 k# @0 J, q, l& H9 \
]4 a9 P& J, }% T
end; g; _* H' z! G, `

& S1 B1 |$ ^% ato do-trade
' \1 D( X( Y1 a. O! b/ a;;
这个过程实际上是给双方作出评价的过程
1 q- [8 h2 D. W. X7 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  [6 o& |* W! D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# X$ H6 F3 p) l6 Iset trade-record-current lput(timer) trade-record-current6 P- B3 a! z9 P- ]! r% _8 h
;;
评价时间; M! R$ L% n1 H+ o
ask myself [
3 a+ G9 ~: }% L9 V2 e( u5 ^update-local-reputation
& F) C9 W" x- ?6 A2 z5 R8 H. C; Aset trade-record-current lput([local-reputation] of myself) trade-record-current# |, W5 `3 K; q* G6 @
]
  k4 _: I9 j0 g* B: G0 T/ h% A5 \* c+ {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- o9 c) V$ Y: G' P# H" ]
;;
将此次交易的记录加入到trade-record-one
( ^7 S* A% X9 @% Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 H! R# {& \6 X) i4 }: K
let note (item 2 trade-record-current )) u, |% _3 [# l9 J* X$ w. b4 @
set trade-record-current) }; Q% u9 p7 u. W! R: _
(replace-item 2 trade-record-current (item 3 trade-record-current))
- v4 ~, Y) u/ C& ^
set trade-record-current
+ J2 R5 o/ ?. }4 X# C( v0 U* }(replace-item 3 trade-record-current note)
; \/ A; L+ P& l! y; {) m6 v1 j) M4 v) w* ~7 A2 @' I7 G9 e
' d5 Q8 r  u2 m# Z: M; j: O" @
ask customer [
6 W- g- C2 x* t$ y# r4 u+ N* U: q6 P  Wupdate-local-reputation2 a0 \8 |! \* y( R
set trade-record-current
4 C$ H; ?( o* y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 m/ b: S# }! u% K# V
]
; y$ w7 a2 [5 D0 w3 W
$ H$ j% B* n* s; {+ H

  s, ^1 @" m  g* sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  E+ |$ P" ^2 v0 {* ^
. X0 a# w- R7 O6 S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- e! j8 a9 p) W7 s/ M8 m9 c;;
将此次交易的记录加入到customertrade-record-all
/ O/ Q3 G- E5 vend
9 U: N# a. |% I7 j2 W. A/ M% ~) ~* ^. B! ^9 w9 K$ }
to update-local-reputation
# E) [" L( ]7 {4 i& H: w4 eset [trade-record-one-len] of myself length [trade-record-one] of myself
$ }5 d! }$ p4 a5 U( ~8 M$ a1 p( f$ `/ b
5 ^2 N5 M' j& V) e, c0 N
;;if [trade-record-one-len] of myself > 3
6 ]! C: R3 J4 [# \6 G
update-neighbor-total
7 E" C$ i2 [/ l$ O$ v; X;;
更新邻居节点的数目,在此进行
6 T  n3 N- z5 _+ j/ t( R" Ilet i 3
% A$ j+ W2 O7 z# A7 o% blet sum-time 0
+ T, j1 Y- W( W7 o$ I. y: u0 x4 dwhile[i < [trade-record-one-len] of myself]: B" D- ]8 g. Q2 u8 B4 F
[
8 L! r. N% ~6 Q: N7 u5 z6 Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ U# t$ b1 L: q" i4 c  \) ^; yset i& ]4 K+ ?4 U  t6 ~
( i + 1)
- n0 V+ G/ U0 A# x
]
# d% q2 h* `& |4 ^; Tlet j 3) Q7 s: L0 W( P0 f+ \: ^# d  z, L
let sum-money 0: p2 P  M/ g1 c+ U! o) t( V4 y7 ?4 @
while[j < [trade-record-one-len] of myself]
4 }" v* ]; @# W+ {# f4 D[+ s  {1 T! j7 Z. M' `
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)/ T# y% [! P2 ?2 x2 g$ _1 o7 e: `
set j
5 D* D2 ^# U9 ~, t( j + 1)
. {3 u$ G' M1 G$ t# ]$ q4 S
]
1 y1 g1 n! G; |6 ]$ e/ @let k 3
( s$ Z$ e+ w  @, f; g# i7 U# M7 D. v: }let power 0
( j* z  ^: M) e; `8 e- ^let local 04 ~% z( j, {' r9 c+ Q: C
while [k <[trade-record-one-len] of myself]
+ `+ N, F1 w) d; D+ U[/ }# _' M! O  |7 y8 m
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)
, w  b% N1 U1 D3 b7 X; bset k (k + 1)
1 s& V6 B4 n# u; e6 \]
  [+ |; _' ?6 W$ R2 Vset [local-reputation] of myself (local)% `5 c/ c5 E5 v
end
* A* {) ]% z8 {$ C/ d' j0 W! Y) `: `% ?  G
to update-neighbor-total( Z1 ?9 o6 W% [: r( F* K* N
" y5 d+ I1 E9 b2 Z* P0 I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  U8 t. h# n) V0 M+ F, A. r/ d3 g; W6 w7 l! M' \! I; N$ q' t

8 x0 X5 _2 |$ L. Q. G8 z$ n1 L! Nend
3 |; R& Q) Y' r- }; ~$ G! b  N; A$ c% }* E3 ?+ Q. B% w
to update-credibility-ijl % Z. P! {/ b5 E' l0 [1 Z5 L  M0 b! k

8 R( G) }' x. L9 k  N" d4 y5 `! `;;
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。
  Z% _& o/ g: Zlet l 05 m7 |: Z7 l8 e: s) S
while[ l < people ]+ K$ o0 W  Q8 n5 N4 `" B
;;
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' ~! H2 T2 u0 I" j& ^, r
[
* J2 v) \6 `/ ~9 }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" ]4 M+ M1 ]6 f
if (trade-record-one-j-l-len > 3)/ p4 E  t+ y5 b; y. c* k
[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( Y2 S4 I& T- t$ c4 f$ c! o+ q% Y
let i 3
2 n, C) L' H2 X' g# Jlet sum-time 0
, v6 s; G8 t1 l. t$ W3 s7 B! qwhile[i < trade-record-one-len]
- B. f+ R9 j/ t. J) \[6 o0 L  J) u2 R- \+ k7 h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ g1 N) u0 ^, uset i8 g+ W3 [, K3 C, {6 C4 g! V9 w
( i + 1)
/ B  Y6 g& l. I
]
# F0 Z2 ^0 W4 ylet credibility-i-j-l 0. ]5 y$ ~: r9 i0 _' E. X: D$ x$ |
;;i
评价(jjl的评价)
3 w# d. k( F- q; `% Jlet j 3& r/ W, y  p9 @5 [- Z
let k 4% X& i; Y* O' U6 Q2 U" |
while[j < trade-record-one-len]
7 o& H8 E7 Z+ a# m8 }- ?+ L* |/ I[
: n* N, m3 s- r4 B- P% v# B) Iwhile [((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
3 F' L: d; u9 q" S# Gset 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)
1 }+ k1 t3 {  ]0 J5 Aset j
! U8 z7 n5 c$ M* \( j + 1)
, L2 j% J0 r; K& M. i" A
]( \  r. o! m3 m( F6 h( A
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 ))
* d( L" p. C, i* [
  _( [4 _: J* U0 ?
) r- n/ f  ^. w" a3 d% n
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ ]/ T0 M! n/ M) J: Q/ T9 C/ j;;
及时更新il的评价质量的评价
8 [  K* _3 j9 s6 g; Q  iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) E+ B4 N0 q8 s1 N3 T: @
set l (l + 1)
* \! Z. D6 @1 g6 K( K* A]
5 l! T4 B9 ?+ M$ F: i& U3 g2 c; ]5 kend' A, M( ]2 P/ r0 r9 U
2 }  x4 P  _- P) K: q. \* s
to update-credibility-list9 L) O2 |% I. i
let i 0
# g6 K5 Z# n/ J' R! a% Cwhile[i < people]( R7 G, D/ [$ U9 L0 T
[
% {6 v3 R6 \, S6 \+ x9 R2 `let j 0* z+ A% k, V, K; _3 [! E! }6 S
let note 0
- [$ R% }! ~& u9 _% S: o# {4 z7 |let k 0
# {# e7 m  q) q  z! Y5 z) |;;
计作出过评价的邻居节点的数目$ y7 n' N. @9 o% e3 k
while[j < people]* m. z, z4 R0 c+ l; y0 [( N) @
[
+ g/ B+ K  ~/ B& f) oif (item j( [credibility] of turtle (i + 1)) != -1)
# _% p/ k/ r0 t: u; j# ]% s/ m;;
判断是否给本turtle的评价质量做出过评价的节点: \( Y; i. v6 X% Q+ j
[set note (note + item j ([credibility]of turtle (i + 1)))/ I& E8 P  z* L, r
;;*(exp (-(people - 2)))/(people - 2))]
5 q- H/ {  i4 Q. i
set k (k + 1)
1 J: F7 r' {  a8 b]
& r- J: M7 @! f) T' V& Gset j (j + 1)
% Y+ W6 i9 q6 \! Q7 x+ b]
, [5 E5 J6 ^4 i7 h; |set note (note *(exp (- (1 / k)))/ k)
; O+ f3 U: O2 E: @% ?7 t5 x3 ?+ n: }set credibility-list (replace-item i credibility-list note)
: X. R7 a6 R1 T: }6 Z) H" _  q! jset i (i + 1); `% g7 M/ L& |0 ^2 A1 m8 Y- {1 z9 c
]0 ^2 [, i6 O3 v& A
end: m- ]$ l/ L' r3 k

  h- m1 P% L5 O5 o8 z$ Cto update-global-reputation-list
+ j& m8 I2 c2 i5 T/ B5 i. }let j 0& [; G9 z7 b( E9 M
while[j < people]6 I" M8 F. H8 f+ {) z
[
4 H0 J. C/ B, d; nlet new 0
, [3 W. R: l+ p; t;;
暂存新的一个全局声誉
( M* U8 Y2 h, t0 R$ I, R; L; O; klet i 0. `& i' |2 f+ Z. ~8 q7 l
let sum-money 0
' x( K1 b" k& G2 Hlet credibility-money 0' C/ R. C0 F/ Q4 H9 m- Y( s
while [i < people]* F; d% B0 q) W1 A* [
[$ k0 j+ e& p/ \8 m* o: C
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. d$ ^9 p- ^/ v8 X5 `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& U5 H0 g& d$ C0 I! y
set i (i + 1)6 j% w; _9 |6 F( ]; i
]! a# l! N3 }- v1 `) S: L( u
let k 07 z: f, P2 n0 \
let new1 0: w1 v6 r% \" [, f# m0 C
while [k < people]% ]6 ^8 U7 L) q- R* l
[
' F5 B2 I* z9 X) b, j. @. M# Vset 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 a7 f) D: |2 T& n" q2 j) C, T4 [& m2 wset k (k + 1)
9 R0 J# e4 o1 L) y! M]' X% ^, d2 p$ W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 \7 l5 d8 I  P3 |4 Jset global-reputation-list (replace-item j global-reputation-list new)
3 F1 z: h& `# v) K0 o5 Vset j (j + 1)
; r, i' J% _2 \0 L. s: w1 e4 T]3 l; _  A! l+ o1 V  x0 y1 n1 N
end* s% j1 z* ^( {0 x% I) A
$ m# C7 b* l7 H$ Y
/ n# k: _' h# K  v
1 ]& r, V/ ~0 u8 ^4 {& N
to get-color
8 S0 j$ A7 |# x& q9 O% l! s8 I) i$ p  ~4 d9 T6 r5 |
set color blue
' z8 I8 ]8 q1 s0 N
end
+ ~0 L1 @+ s' G2 w5 w& [( a) v! A+ @* s. ]: Z/ p1 L
to poll-class2 V; |8 q( o& L3 ]7 P% E
end! ^  H6 G3 P# g

2 L! ?* N3 C, yto setup-plot17 g# R" ^% Z$ S3 b

: Q. Q# Z3 G9 a1 r7 oset-current-plot "Trends-of-Local-reputation"

8 L9 F$ u" V6 N$ ^& a, W
5 X5 y- R9 r* r& _+ x- ^& i* c1 pset-plot-x-range 0 xmax

, T& r2 d# r4 G: p, L+ @4 Y# ^/ X1 P( U+ S
set-plot-y-range 0.0 ymax

, E( ~; L5 M  Z) d5 G/ rend
- [7 o7 @. U( @3 `% }; V2 E+ B5 a  Q8 ]# I, i8 i! P: b* `6 t0 W8 a% V
to setup-plot22 B0 {. h' i& H& d
, b- y- o! i' C3 a) ]; ^# j
set-current-plot "Trends-of-global-reputation"
3 j; {. D( ?# j/ V  {* G3 _
6 w) n$ J9 }* R1 C( ?3 M: e, M
set-plot-x-range 0 xmax
% E$ M1 a% Q8 z' W# f

1 m  _, P. f& S/ U1 I" Q" r% Zset-plot-y-range 0.0 ymax

6 i4 i+ c* A1 Oend1 x& l$ a4 K+ g- _
% r3 z0 K  `6 K" a% A
to setup-plot3! R+ [! J# v4 R

  Q( @, J$ L" b+ \1 V2 Pset-current-plot "Trends-of-credibility"
$ E( d1 U; g$ a1 m1 Y8 u
- X4 G2 u9 G  @  A: ^- n, F2 Z
set-plot-x-range 0 xmax
0 g6 v/ t  s# H6 O; z3 T
3 G5 u: Z" }8 C0 y, m2 q- u. l/ }. K
set-plot-y-range 0.0 ymax
4 L! R1 s/ `2 t' O/ @; U( Q
end  q7 l. z" |7 w8 J5 K) ^
" N- p' a9 ^8 Y$ O$ _% @2 x
to do-plots
( B/ z  W+ ]2 O# Q/ Oset-current-plot "Trends-of-Local-reputation"
) {0 z- i, R  I; ^3 Wset-current-plot-pen "Honest service"9 p) g' f: V7 h3 @
end) b4 j9 F3 F5 S8 b3 n, t
% T. R# [4 P0 T" y+ B' D, v$ U
[ 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.
$ w& ]1 c* Q) R% `: s  w( j, _6 A+ n* [! m2 \1 b) Z
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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