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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:
% ?8 L& u) b5 i, N' m- F: G9 cto do-business 0 X/ u& {/ E% T+ x% s3 x
rt random 360
6 y1 Z, H. p; h% {- C$ ]( a fd 1
5 r0 H, x! i7 U9 O0 }( P! W ifelse(other turtles-here != nobody)[8 x0 \! T# `0 V) b4 V1 m& N/ U
   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.6 P  c  j0 a7 c$ m9 G. f
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' p7 S( _2 W0 M: ~8 _5 l- d   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; v, l) b! ]- Q   set [trade-record-one-len] of self length [trade-record-one] of self
6 p, x, i5 Z" I   set trade-record-current( list (timer) (random money-upper-limit))2 |- Y7 d% }! b- k8 e
  q0 |: n, b  a
问题的提示如下:% @& |. N, [; r6 {# h2 I
, V- b2 O% h8 j5 \
error while turtle 50 running OF in procedure DO-BUSINESS. j" Y. D/ B6 |) U7 c, D2 y
  called by procedure GO
' I  R; [! t4 n4 j: H, fOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 V$ P+ G8 i- \, d2 F5 t
(halted running of go)/ x1 K2 O( u6 Z' O1 b6 i2 w
4 K3 H* z0 k( p) G7 R) t1 o" 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~~: {3 w* S: c) z6 c* C" L% 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3 K  |( w) _" p% a  L% l3 i; c- k; Q
globals[/ Q- |& I! o8 D  t7 x" B* B
xmax8 A/ |- R7 H: {! q
ymax
6 v9 d+ @6 W4 i" S% r: H, L1 S' Pglobal-reputation-list
$ A2 e' G$ t8 P3 A( j' ^  y( U9 b* _1 Z" {
;;
每一个turtle的全局声誉都存在此LIST
8 v) M. I# m# r5 u/ B4 a! Fcredibility-list+ w$ V) W3 \& s$ F1 @* L
;;
每一个turtle的评价可信度
3 y9 _' V! z5 P  G/ P( U" u8 W+ Dhonest-service
/ _  s0 o( g# w7 W& _' L+ \unhonest-service
3 G8 ]. V4 M' j5 X9 R3 ~oscillation
& x: X$ U: K& `3 [, D# drand-dynamic
5 [' |9 y1 Y) Y6 Z# P# q]' B; L# t4 J0 u& A" }

7 i! E" t$ w" _& Fturtles-own[
. p) b2 Y( V% O( Btrade-record-all' c+ c" O# q, h2 m
;;a list of lists,
trade-record-one组成
1 h3 @- P! b0 m( O) `4 Atrade-record-one
1 p8 q( |# I/ o/ P7 U" b- z# e;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 x6 b! G; s. O3 [' z) P/ a* ~  i6 {2 `! t( `$ @3 F# \5 {
;;[
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]]
+ o, P8 y9 ?: Atrade-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]* g0 U" U& H; q8 w
credibility-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
* ]! v& m. M( ^: Bneighbor-total. ~5 I8 r$ O8 U' U
;;
记录该turtle的邻居节点的数目& c3 v! \( Q' q  T) o) s3 L
trade-time+ U. T, r7 K0 e6 G' I" Y
;;
当前发生交易的turtle的交易时间
8 F! U: }9 g3 u0 o8 d* Qappraise-give
6 T6 O8 k# H7 {2 N" G# |;;
当前发生交易时给出的评价
0 |  A9 j7 y+ d8 k9 k; |, r/ H/ `appraise-receive# O/ A' x( e& D$ w
;;
当前发生交易时收到的评价
3 x6 A& v0 y! K: x' a3 lappraise-time8 G( Y/ \) H, `
;;
当前发生交易时的评价时间
) z( i" Y5 z4 S* tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 U, h4 o- b! u: k
trade-times-total" ~" g- F- e' K" j7 z
;;
与当前turtle的交易总次数6 r) s* ~7 f+ c! A- A
trade-money-total
9 U# \- `' P5 u# |0 T;;
与当前turtle的交易总金额, e; R- X) j& P8 v' Y$ @. m
local-reputation, O6 h0 }3 e' O% C% t
global-reputation
+ V4 B  m1 \9 S) T6 Ncredibility0 d" p# d1 |# g7 s5 S  o- z
;;
评价可信度,每次交易后都需要更新
1 Z8 I8 ?! W1 Q- b. J! tcredibility-all
) L2 ]  @8 a) }; T! X;;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
. z9 C5 R0 G  c. C  H& N# }: U6 |1 Z) T( ], U$ h3 t* N' ]9 @
;;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& @$ q2 q  g9 N/ a
credibility-one
% F- z/ E1 M5 D! U) l) s;;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
; I9 @8 V9 e) H) D; cglobal-proportion
9 x" H/ v8 t  H+ n. m3 y/ c2 Dcustomer
6 F* C# o4 e. W) C2 a; r7 W4 mcustomer-no
! T5 z' Z0 y0 l% K- F% H: v; B& V% s; Jtrust-ok7 |" Z2 m& c4 Y  Q( b& s/ F1 a
trade-record-one-len;;trade-record-one的长度
& R8 d1 c+ _* U4 Y2 B- |]
3 `' t8 ]5 S# p! E& B+ Z$ d) d$ Y" G
;;setup procedure6 A0 J1 X, a, _- }9 q3 l' K

( c5 _0 q  s9 w8 }2 r( x$ Tto setup
4 ]8 j: z* Z5 b) _) v7 J0 ]% N! |0 z2 T$ Z6 ^( U7 u2 a
ca

/ a' M/ M0 h% b7 j' H
$ W4 j- y  N% O# d- f5 pinitialize-settings
2 z- }" O, \$ d( t

8 F3 v9 ^( `) V( Ecrt people [setup-turtles]
0 E4 w; k3 ~. ^

6 i# G- y- f" Q( s4 o" c0 u( |reset-timer

- G# r2 ^+ [: y- a8 w/ p; Z$ n( Q. C) q# l2 E: @/ Z, H% E
poll-class
3 o" g" x4 A: O) b7 R3 g2 b

2 ]5 f+ T7 Q  o2 E  u9 K8 ]( ssetup-plots
* Q- ^: }, l4 a2 j; B, c% n. J

# f* W& u$ b0 j2 L1 Tdo-plots

: [9 j' j% p5 W! c8 n# V; k1 pend
6 {/ s, F: n7 I3 D+ P* g4 n( A+ E7 g$ s- a. h+ U
to initialize-settings" X$ F6 j8 j- E; M2 I8 B4 ?

, [' d; S% v& o+ y4 Uset global-reputation-list []
7 i  Q2 W5 O: K% Q: q& y) `0 i: G( k

4 U% d# Q* e$ \6 Z5 n3 F& B9 uset credibility-list n-values people [0.5]
, h, t: R* }7 F  h3 E+ U7 X4 u

, ^* H: k2 R4 B5 i- Sset honest-service 0

. J: y( w9 q4 C6 H
* j2 Q5 H) J( y6 b. ^! R5 Sset unhonest-service 0

3 d( q. W6 Q1 I" s5 u/ G# M8 M2 d/ S$ a& R: C8 e% X* X" C1 k
set oscillation 0

: [+ L3 F1 u1 v5 K" }% H# Q5 S( a5 M  [
% f' S3 O( G+ i$ F5 }0 [4 dset rand-dynamic 0

: M% f$ y6 i2 n4 Qend# s8 o! k0 s1 f% n3 l& e# M1 t; x. I9 I
% k( l+ P) d1 \) _; L6 T
to setup-turtles & C' x4 y  M3 B; Z. k7 i0 m
set shape "person", z* I* m  n# e9 D0 O
setxy random-xcor random-ycor
" T9 l2 a% h7 vset trade-record-one []4 j7 q0 K8 I9 z9 l- ?4 E

& y7 c* P; M5 X; W3 b6 V  Lset trade-record-all n-values people [(list (? + 1) 0 0)] " ^  h6 b  E  Z' O1 b

7 K% S4 w" D+ J4 y1 H; h# ?set trade-record-current []9 e- Z7 F( w' h5 h, k2 |6 L* \% }
set credibility-receive []
7 w' R, ~7 B( `3 I; |# u: f( Zset local-reputation 0.5. n0 }- [; {0 g9 E
set neighbor-total 0
0 w% V0 d$ m  Pset trade-times-total 0
/ |, v: h( f- d5 f. n; m. ]( fset trade-money-total 0
2 A+ k( u) T5 s- B5 p4 p7 w. o# Pset customer nobody
/ g% n& O2 H' [set credibility-all n-values people [creat-credibility]
4 b5 K7 S) M  S2 |2 b5 q7 K$ O" }$ Hset credibility n-values people [-1]
) n- a/ z% }6 ~9 C0 mget-color
( ]! _) E9 U0 {$ {( R$ Z: V

9 V+ H  Z+ @5 Y$ h! ]end
( x4 y! \' A: d& u, A2 l: X. J
8 G# y4 ^- R1 C- W& @to-report creat-credibility. p4 k( h( c( l
report n-values people [0.5]
1 N, [  @2 H/ Kend
' e* v/ Z. g# M# D9 ^6 a  e, _* j8 m/ O4 G) W+ d# N6 ^, t  {& d
to setup-plots
3 Q/ e* n4 {/ p4 }! C3 E/ ~& B9 v( G+ B2 @
set xmax 30
7 l2 [& W7 t6 c. o+ P

- `7 A! p6 T- d/ E( n3 U( Pset ymax 1.0

, ?' S0 P6 r* U0 B9 o  H4 e0 R% @6 L4 l: ^* w* J* q) K% r) S' V; d" S& J2 ^
clear-all-plots

. K1 l$ s9 e8 o, j- }$ t  q6 [# [9 Y- F, E4 \5 @6 E( f$ v
setup-plot1

$ p. @4 ?* @. q! K/ G& ^
8 e$ q, r3 N' ~1 \; L) j3 jsetup-plot2

' g$ H7 E  f" X0 z3 g* B0 \- X
; i& T% c, i* i0 `- K+ Psetup-plot3
( P( j$ b2 f8 N  d, r) V0 z- S! N# f
end
) j& D4 F3 D5 q/ _# r2 j+ y6 X8 h8 v- o8 @* B# n' M" U% y; d
;;run time procedures
! ~7 l6 c* y9 W, U
5 d5 _: A$ j, X3 V9 t8 Y8 cto go
" }" c. T) O7 r. ~2 ?& |! j4 G  _
$ m+ x/ `/ X. eask turtles [do-business]

7 a/ f0 w: S- l4 j# H8 Lend
5 O6 R0 y7 ]: M$ p5 ^3 q  \, @. v+ r  a4 G1 N6 k1 J- l- d3 v
to do-business
# S0 J% `0 n( l  L: R

$ [+ j# q& N( r; r$ B4 F5 D% `: T1 F- [6 C) R5 N) }- E/ `
rt random 360
. l! t- L& {. L& ?0 B! D& Q

% C! u; O2 k3 d6 Cfd 1
8 F9 Y8 z( W& K

  H7 f0 l2 A, Kifelse(other turtles-here != nobody)[

8 s+ o) I% r( c  q1 o  A; @* G# [. |: H# v, c" m2 b. [
set customer one-of other turtles-here

9 L) s$ f7 s/ _4 `+ t& V0 W  ~) o0 o, q1 E6 H: N+ a; I, r2 B
;; set [customer] of customer myself
$ `9 L6 Y: g! o$ n% a! R5 ]
# U' p# }0 ~( ^8 M1 O$ E5 R
set [trade-record-one] of self item (([who] of customer) - 1)% A- Q: V2 o& d: I: G# p
[trade-record-all]of self
% r- `4 x3 Q/ \4 D( b2 c;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  ?+ F6 k. s7 ^0 G9 O
! S9 U2 h6 p8 A/ t2 _set [trade-record-one] of customer item (([who] of self) - 1)
+ o1 i5 j# e1 v8 k% F[trade-record-all]of customer

. n1 A0 X3 I. F2 w! ^: g$ `
) _, b, J' A- m1 m" cset [trade-record-one-len] of self length [trade-record-one] of self

/ e1 t7 i& J* S3 A$ o
0 X5 u/ S- T1 A% w" G$ j$ Z2 nset trade-record-current( list (timer) (random money-upper-limit))
# u8 n+ U  a& A% V
% v1 y# z' W4 `; z( `+ C
ask self [do-trust]
6 d9 ?3 T# z! N& ~6 S, S2 l4 q;;
先求ij的信任度
2 f( f* K8 Y1 F5 A. F/ c1 u- D- g
6 Y- Z6 {* x/ s) lif ([trust-ok] of self)
& Q# I4 T2 y4 a# S7 Q+ \;;
根据ij的信任度来决定是否与j进行交易[. ~- G( [" b* ]  w9 X  y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ j7 M5 f# H4 a, Y$ T" C8 S! r

! q2 m. \2 m- ~  D$ u) b" G[

% U1 T6 c" K) P5 `7 A! H$ ]; K4 l
5 P$ t0 E  ^: H! K( U/ Kdo-trade

7 [; L! n) w- f8 P! J7 j- s6 b1 o1 B
update-credibility-ijl
( V% c- N) ?) v
0 P' g' w, _$ m! A
update-credibility-list
. o% ]- p( _$ _+ y( _) A

- v% j" Y& a2 O
! ]2 i8 Q6 s5 |* J! f+ c, L8 bupdate-global-reputation-list

6 l$ K. t) T  h8 j
% _! I( n* g& \  V  s: bpoll-class

* M2 z; \1 {! N4 R3 u
# G3 q# B. y# h6 m. J9 |9 q' E' Mget-color
; ~: S/ X+ B8 [, Z+ B

" k$ Q2 T/ Z/ k5 V2 W' [8 @]]  S5 `9 k# B2 w3 l  O# l5 N
( H# Q' _0 K! p" C
;;
如果所得的信任度满足条件,则进行交易
1 }5 A. Q/ S" C* ~1 Z
* o* D# G& t& p4 z& S4 n5 T+ Z5 [[
* ~* a" R; m4 N! G( b7 w2 V9 E
3 z# m5 w* k) K, j  J3 m/ g
rt random 360
8 j3 V8 p/ L, x; D/ w7 Q* w  X
5 U3 T+ Y8 G6 O( r
fd 1
1 j# E* \( B& H; X8 [" c6 l

: i0 B: A2 @" a! k]
- }% r( a; D0 c
& J) \4 |4 p9 S- J0 s
end

/ z1 i* v5 Q7 c3 r5 y
7 K/ }: J- G2 u$ i: T9 h2 F2 @" eto do-trust
/ S/ V  I; V3 U* P* O/ Tset trust-ok False
( a  v  B2 u3 \% J/ G! Y, V
* {9 r" G, }& F+ ^7 y9 p

- J" y" f& s; f" k# c# [let max-trade-times 0) n* c, v! H9 |' l3 e' D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 D( g. f' Y* X7 M) glet max-trade-money 0
8 H; e6 ]" J- q7 n* `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! m7 [* w; H( Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) S  Z# [% a) s4 |( f0 o
9 w& ^. n+ I6 V

! f8 W3 \3 z2 Gget-global-proportion7 _# c. V% g: d! C& {* t. O- d3 a  @
let trust-value
: \, Y  l  w- I) Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
1 Q* M: a( s" [: i" D
if(trust-value > trade-trust-value)
2 h3 W. \# X# H/ q7 J9 r" v[set trust-ok true]
9 G7 c- F6 w7 ~5 h' P6 }2 H. send9 x- `4 {6 b1 o  \0 C' @0 K
5 K, Y7 `, l  Q. F
to get-global-proportion/ Y- r4 t  N: y. f4 m# \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% G4 s: w2 y/ O  A
[set global-proportion 0]
: G  v) S6 U# B$ I7 J8 \7 [' u[let i 07 t  p7 r. H# u" H* |2 a% s4 }8 @
let sum-money 0% ^8 g  R$ a" v$ d+ k
while[ i < people]) J/ e5 A$ o/ H
[6 ^$ Q5 @4 ?% q
if( length (item i2 p. n1 o1 {5 u6 s( n/ D
[trade-record-all] of customer) > 3 )
! Z$ i  \: ~' @" p0 H
[
3 u: m( o, f- N1 \set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 L0 y$ S( D* M( ?/ K
]
- ~- u3 u4 c5 U7 O3 F]
- ]6 T7 b3 U4 N( f! Y( X3 Ilet j 08 F: G: Y: i# V2 |
let note 0% s3 d: M% {; X$ W( f- ^) c
while[ j < people]
3 h8 O8 A& H+ K- g  ?9 Q[7 G# B3 Z; T" x; B
if( length (item i
1 o/ k' L/ }0 A- H" m[trade-record-all] of customer) > 3 )
! \! I! W; A- z# X9 O4 v2 S
[
( L# Q5 Y7 m  c* ?, T. p3 }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' i: a- X+ T! N  n
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 b% \9 c) B+ q3 q" ^[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 h" V5 N' F' S+ n. A* O
]
! X3 Z3 F1 H8 A, B: F6 }]  f" U% Y- N* X3 y) O4 Q6 z
set global-proportion note
7 P1 b7 \# V- X0 s]6 a. s  \8 k/ M! \" b, b
end' k  ~5 r: F! F

' [8 d4 N) V' l6 Lto do-trade
5 K4 G& y: U6 V4 C;;
这个过程实际上是给双方作出评价的过程  q# d; {  e3 Y* G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& y7 O# |% |8 U$ h- Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ N1 S+ @" T; _4 v1 q' f4 w: b% L
set trade-record-current lput(timer) trade-record-current6 S- T& ~/ H; K* |6 z, K
;;
评价时间: {2 a, R5 ^# s1 x9 H7 q
ask myself [
# M8 m) N3 U8 ], x2 {update-local-reputation5 F' P' o/ ^/ z; x9 T
set trade-record-current lput([local-reputation] of myself) trade-record-current
. S3 u- ~9 W# h# u]
* q; T* g4 I- h5 _set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: z* F# q3 p7 b3 A$ p" d" W8 ?
;;
将此次交易的记录加入到trade-record-one
. V  W  V/ B2 g4 Z( K5 x: T1 wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% {8 }, ?+ O4 Q6 k0 ?0 {( v( M9 o+ glet note (item 2 trade-record-current )
" T4 Q0 x% X# i# K( M* cset trade-record-current# j9 y+ G% q& f. c
(replace-item 2 trade-record-current (item 3 trade-record-current))
' R; m, a$ A6 R" z* h) }! b$ V) i
set trade-record-current3 L$ ]6 d  _! Y* s1 R! P
(replace-item 3 trade-record-current note)
" J- N1 v# i$ n
- W$ A8 \/ s* D* a8 V  E/ }

" y% g1 D0 J) ~  d# j! o5 A% pask customer [; J( v* w1 O  v. B* g
update-local-reputation
+ r6 I* \( {( a/ ?& A$ dset trade-record-current3 e& V+ ^# H2 u/ _, _. T
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" v: u4 Y$ \: Q7 O1 P6 w# j]
; Q& O4 |0 G  i) z  [
' H) Y- t0 K6 P6 e
+ y: w' B1 a0 I, C- m; L3 N6 q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 w. @  |& e3 Y
3 p4 w, F& n. r* q; S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: f# R' c. N# T- v+ ~9 F) D; X  ?6 ^;;
将此次交易的记录加入到customertrade-record-all
& n6 a$ Z" U2 `& T2 u  Vend; G; E& V7 Y$ |6 b5 T
. Y/ g8 Q* h* [- m: Q
to update-local-reputation
2 u2 o7 y1 Y. G" Z- Uset [trade-record-one-len] of myself length [trade-record-one] of myself. E& [6 g- }* |, O/ |/ p! i
: n- O8 y: t/ [; D0 |, O# M
+ E! w' s0 W5 P5 p
;;if [trade-record-one-len] of myself > 3

3 B. f3 ?3 Y) ]! ~+ O) jupdate-neighbor-total* n% ~) U  x. c6 ]. y2 I
;;
更新邻居节点的数目,在此进行
1 W; o( ^% Q7 F: {. ?/ mlet i 32 Z: {9 f- O' p6 K5 f
let sum-time 0
( W4 G* D# N8 Z( j: c# awhile[i < [trade-record-one-len] of myself]2 }$ E% D2 {5 D1 x% Y# C% }
[
" r! K; K0 q2 j5 J+ Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 g: }* `- A2 Y' A: e  Kset i% N9 i( u6 b4 |3 O
( i + 1)
( {- D5 ~4 d( t# _+ f' A. H' I" r+ }
]2 k) Y9 ?2 W0 J9 q. n" I
let j 3/ H, G1 x" d, ^* {- I
let sum-money 0% i6 C( l) {5 L
while[j < [trade-record-one-len] of myself]
' E9 t6 O# u" r9 Y1 t9 W5 F[8 P- O" h9 E7 a& D. {$ F
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)0 `& g6 [" T/ o! P
set j
5 ^/ t8 z5 O6 l5 W: ^- y0 x( j + 1)
& K3 Z2 d0 B2 ^, T: \) h0 n
]
, S) R9 n1 ?, x6 a' H3 q/ ^let k 3
& H+ e' q( ~& q: e) |; X) Tlet power 0
+ u4 \( }8 T7 Zlet local 0; z# F! b( A* F
while [k <[trade-record-one-len] of myself]
: F$ F4 i0 n! ]3 a# r[
1 [2 m8 _0 j8 p: T/ Dset 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) % \: A" K/ Q. f: O, n2 Y2 c
set k (k + 1)
% }$ k7 j; V7 p9 A: H]
* n4 B& h0 e5 U# ?" E8 B% ]/ J. Uset [local-reputation] of myself (local)
/ C" s9 l3 X/ y9 O9 g3 P: h8 b, Rend8 |: H5 I# w* U' o

' ^2 a7 @! g7 ~/ gto update-neighbor-total
) p! ]; w8 z# o6 P
6 i4 K# g8 ^7 r2 v7 d! l0 Aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 V+ C- o% J, v
: K* u6 }% f, A! m! t+ i

/ p* a( {5 k" v/ zend( @9 l0 }* y6 V+ ?
$ m- d) K- |0 W
to update-credibility-ijl ; [4 ]2 k4 c  W' q

: ^" p' u3 V- ^" @& A7 E* ~;;
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。
5 J, u4 I5 \/ @5 x3 G. \1 P" Hlet l 0$ }6 C5 w; a2 E+ P. S
while[ l < people ]
5 r* u, Y; l! _& I. n& f0 W( d" ^;;
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
- X0 O' ?" P7 i[0 W) s5 Q0 Q3 L  g9 T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- L8 B( ^9 H- P4 n8 U$ c
if (trade-record-one-j-l-len > 3)
2 A% t) [0 k( u, ][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
, \8 G1 c) ~! H! P6 m6 nlet i 35 X! k. E* t+ _. U% ?* t+ z/ B* K
let sum-time 03 ]3 w3 X7 q+ C7 J. E% v  |# I$ C
while[i < trade-record-one-len]7 Z1 c( q  r. p% j/ A
[
& ]0 |' p/ A7 m: F3 U- n5 T" L/ tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). }+ ?  C$ v, F2 \! p# F
set i+ O9 ?- h9 m; b! ?" K" Q
( i + 1)

5 v1 x7 U) t/ `% q]( W  ~, k4 v+ W6 `' }% u+ C. K
let credibility-i-j-l 09 m$ H! U1 N0 A0 ^4 r5 X/ i
;;i
评价(jjl的评价)5 B" I8 J! \2 b7 c- t' c
let j 3
: _+ x8 S1 d( }. Y) U. a7 Ulet k 4- v2 E; C2 w. j9 V  {- X
while[j < trade-record-one-len]; y* M* h0 c7 {  L+ z2 A
[6 N) Z* l4 g4 _! s% X2 R: {- R, 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: h7 ]* b. W, v* z/ H# G
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)& Q+ Z: Y% c5 n
set j
6 u+ n2 M; R6 K: y  t8 c; p* h( j + 1)

3 R# P) ?6 j" e) ~]- E" p8 \0 q9 z5 l
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 ))
" }; v# K8 o2 x1 p
9 N& t' H3 a6 W% ?. x# f6 L

6 q+ w6 c7 _4 k2 Blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 S7 r) F+ ~- F6 [2 X1 A! \- b3 ~1 _;;
及时更新il的评价质量的评价
2 e2 w3 J. n( i5 I3 L8 N7 K6 wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- \  d' @' O; Q* |) E- a1 r7 `
set l (l + 1)  V7 e. k2 W& B5 ^# h! ~
]
+ Z/ I! W" e. p; Cend. x$ a' ~0 }5 V/ D

6 r1 J( R/ G2 C5 Cto update-credibility-list
$ D" r5 W5 k+ w) @" @  Mlet i 01 L) `. K% \. d7 U
while[i < people]
+ H* }! S/ C2 c2 A. e) @" P[! g8 E! q! T/ P$ w, [3 j
let j 0* y, u1 i; O) h+ w- Q+ `
let note 0
% v5 m6 l! ^& P: R0 Vlet k 0
$ Q7 D4 g9 x% Y2 a; w;;
计作出过评价的邻居节点的数目
# J+ c) }4 N* Rwhile[j < people]
- ]/ D* S* p9 f$ c* ^[
0 z2 d6 i# f, a2 U& ^if (item j( [credibility] of turtle (i + 1)) != -1)2 E1 N, f6 D8 p6 v3 ~
;;
判断是否给本turtle的评价质量做出过评价的节点
3 i/ f4 u4 J7 a7 R- U9 c[set note (note + item j ([credibility]of turtle (i + 1)))* H5 [, I/ Y/ w' Q. b+ x# E
;;*(exp (-(people - 2)))/(people - 2))]

! U& ]* q; n5 |) }2 w, nset k (k + 1)- n, ]9 G4 A3 w1 C9 u
]
$ n. `8 m; |3 f! M# p1 Cset j (j + 1)% ^& c2 ?! {9 ]8 A7 F
]8 t; S* A3 a3 M8 \
set note (note *(exp (- (1 / k)))/ k)
& ?- \- {$ U. [( }& O# j; oset credibility-list (replace-item i credibility-list note)7 u/ p8 P' r5 X0 j
set i (i + 1)4 u% _4 Q; T" o/ s# v  p! v
]; b6 k; e' d9 X2 @+ @9 b: ?
end' O! [* V5 v8 Y. t! x/ w1 ~+ t+ A
) K" y+ t  E1 F& _- p
to update-global-reputation-list9 S$ S' y8 p) d5 |
let j 0
4 O9 y8 ?" _# R, l) B: Ywhile[j < people]
* D+ R. }. Y# v/ ^' ?. j[
5 D7 Y5 @/ x2 x$ ~let new 0
8 q. @. a4 {. w4 [9 S/ x) `;;
暂存新的一个全局声誉
! T) Q: s, \" I7 u5 tlet i 09 p& ^, N3 f/ f) W- v
let sum-money 0* \0 y% ?2 v$ y; I" M; \* G) q, v
let credibility-money 0
" P6 T* W" N, L$ [% H/ Cwhile [i < people]
, x6 {+ `+ ?, E6 K; K& F/ }[
: t2 P4 R+ H3 O9 j( Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 ]' [4 y( Z- r% l2 Nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" Q( z' w5 r. Q) Z% ]4 o& m
set i (i + 1)% v/ E0 q/ Z& f  [: e$ c
]5 p5 A4 M& X+ g( F
let k 0
9 B: P; z6 a7 j( ^, p0 ylet new1 0
- A7 O3 G  E0 w) U( uwhile [k < people]
+ \5 l1 O; B/ X0 y/ J* j2 ~[
! `4 Y# b% z# d' y! Xset 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)
! [( Q7 [) i* i+ y7 vset k (k + 1), k7 G6 K$ @% F
]5 A, D0 c, o% h. U( V4 _; Y5 }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 h% r" B' [# Z2 h  E1 n3 ^
set global-reputation-list (replace-item j global-reputation-list new)* F5 F) Z8 r# f0 k. n4 y
set j (j + 1)
& D& a# b, q2 X! ?+ q8 X9 e]
5 U/ o. i! g4 Bend, q; @1 X  {' z# \# B6 ?$ M

7 _! V& E5 P6 r1 T
, s2 b( q+ M9 N% [. O3 b; w  V5 k6 [- v) k  X
to get-color4 u8 {7 S* v, \8 D4 M4 U
6 i' ?: f) Y0 L) b/ z
set color blue
; n: |7 w5 B0 @8 t
end2 }$ S7 B) y6 i

7 C0 V9 }8 Q. K# E1 @to poll-class
. n* T1 `0 |& K8 s1 bend
5 d0 S  c/ p8 v! L- R) W& N4 D
( r  ~8 B8 v8 q9 l" G% y5 Sto setup-plot1
9 [9 ~. V5 Z' q6 ?  J3 ?  l2 T, @7 B; m8 D
set-current-plot "Trends-of-Local-reputation"

( g( o6 L' R' N' D
" s1 g( O6 p; J( l3 J3 P: tset-plot-x-range 0 xmax
. n9 `5 X1 w' x; H) B  c

" w* ]! r3 t/ qset-plot-y-range 0.0 ymax

, m. T* r) P9 Q- |; oend2 D' j! |( r. x4 r4 U% {
) B* M( o( m# ^: Z" c2 Z5 S5 V
to setup-plot2$ D1 M% O+ B, H* V
3 M& x! l9 U+ J
set-current-plot "Trends-of-global-reputation"
$ Y' H$ `* E2 [4 S. u& [( q' q% I

1 j( Y2 u( e7 r$ B' yset-plot-x-range 0 xmax

; l7 X' g/ v! u; N8 m
0 v* I( y1 J+ O# yset-plot-y-range 0.0 ymax

2 t. u' I" s& [3 c* o, Y. @end! y' v" a3 W" `( }9 q

( D* U1 S6 q& h6 w6 i9 vto setup-plot3
) u4 C$ L. b7 G# ?6 J( ^( h6 H! H7 I# `: f( z2 F- P& Z, E- g$ S
set-current-plot "Trends-of-credibility"

( V4 f8 s# C- Q- W  }
, d  f- q+ ~2 J5 t8 Bset-plot-x-range 0 xmax

6 u7 k5 P2 f' B8 H  b* N  w- n' P5 @
set-plot-y-range 0.0 ymax

8 u6 x4 \9 G; i, l  X2 t% i) \end/ U  h  Y# y5 ?3 R& a

' f6 b. j! |9 C& S- Eto do-plots3 f/ q3 J: h; p
set-current-plot "Trends-of-Local-reputation"
. h5 f8 d1 L) H9 Mset-current-plot-pen "Honest service"
5 {5 J' j8 c& P7 s6 D2 \& Z2 X3 @6 C: ?end
3 X3 _9 m1 m3 ^8 n
) r: S  B" n( 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.
' M$ v9 w! Y. j; ~% ^; ^. o+ L! X4 K/ E9 Y+ S" Q
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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