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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:, Z; w# n8 }& }
to do-business ( Q, |5 R6 v. W1 y6 p
rt random 360
5 g# o$ U4 }6 T0 d2 }! Q fd 18 y9 H5 d$ Q2 i
ifelse(other turtles-here != nobody)[
* K5 ]+ p" Z" m" e6 b   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.+ N$ v. T! H5 f5 Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" w: y! m8 e8 u* l! O" {. [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ c& B; Y( H2 C  H  N   set [trade-record-one-len] of self length [trade-record-one] of self
8 Q* c: l2 e  P0 F   set trade-record-current( list (timer) (random money-upper-limit))
( C0 P6 Y3 j9 e/ ]6 y$ F3 b. z( u2 {
问题的提示如下:
' J# j0 m+ [' |# \/ U
# _1 q9 `' |1 d1 {( Zerror while turtle 50 running OF in procedure DO-BUSINESS
! d9 D- {; N4 {( I; c6 l# F+ S  called by procedure GO, Q* N" \! |" N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 \8 Y, ?$ n0 j- X
(halted running of go)
4 w  q% C0 t9 x& x$ z6 g* y. ]$ V$ n1 t: {$ B/ i; 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~~
  f2 ]  d' q, q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2 |) Y' X, C4 a( N* o
globals[; u9 _: A3 P6 l  r7 F+ b7 \6 U( z4 _
xmax
. Q# X- M: y7 Y  r& v' lymax7 c+ o  }7 K% q$ u: @" e! E
global-reputation-list- J+ G7 r3 x+ d( o  k

6 |% N7 |0 |) D  ~8 n! |;;
每一个turtle的全局声誉都存在此LIST
1 r0 t  d% D3 S" k( O8 v2 [- V0 Mcredibility-list# F1 j$ @7 S8 @' \5 }2 E! H' }
;;
每一个turtle的评价可信度
% p6 ^9 J6 ~6 f' T: H! Phonest-service
( R* M& f3 s2 S  U. S* dunhonest-service
0 ^4 m! I4 v; Toscillation
& m  x0 _7 _, X$ C8 M3 ]* |rand-dynamic
+ ^! {" D! U, {3 S/ V5 @]/ K. s0 a/ S% a* v( ?

; _1 V  ~. K# `turtles-own[
+ G8 X: D0 n1 b  ltrade-record-all
7 s; E+ j; W. s" `;;a list of lists,
trade-record-one组成6 D  F+ R( N+ H% _
trade-record-one
3 A2 Z5 j9 T) a  s4 ~. G$ f;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' C7 Q0 l. U+ f/ t# d
% V/ @/ w% l% k# s* B;;[
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]]0 Y4 C2 V+ w/ `$ p& I. ]- b
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]6 t9 E! Z0 z: Z$ p# Y1 a
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
* s# ^$ T: Y; M4 d5 n1 Cneighbor-total- X8 H6 `9 S' B3 v+ o5 }
;;
记录该turtle的邻居节点的数目# n2 r. t- ^( v' d* s8 S
trade-time
4 R( m* e: d, X- A5 u" F;;
当前发生交易的turtle的交易时间
% x9 U# ]# w' Q; R# x1 O, Kappraise-give. w# T7 q3 @7 D& a' y9 u; U
;;
当前发生交易时给出的评价
& l, }& X' [; d7 D1 r$ d+ ^8 wappraise-receive9 l0 c1 w) [  u. l  ?  J
;;
当前发生交易时收到的评价
, T8 S  v( ?. P5 z, l4 Wappraise-time; R# p9 q! ]; ^4 h2 U
;;
当前发生交易时的评价时间
& ^, i* e; G1 Q7 l( ^6 Llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉, ^: l/ _3 o/ v
trade-times-total; x6 u6 O( ~, ~) O
;;
与当前turtle的交易总次数* l- G" T7 ~" ]+ B
trade-money-total
1 [, ^: J2 Z* b  M& `;;
与当前turtle的交易总金额
6 o, X3 D, f; V& A# v6 m4 I% ^local-reputation1 X& T! d7 X+ d; q5 J
global-reputation& Z+ Z- {. Y4 c2 N
credibility2 {- [0 [4 d3 Y8 \6 c
;;
评价可信度,每次交易后都需要更新
  t0 f) M# l- Tcredibility-all
0 P+ c; n% R- X3 ~6 p& c, E  U;;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+ y9 r! y$ y/ k- c
& X$ X# H) H# @* l8 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
, q* s* l$ G1 K/ kcredibility-one
+ h% N" ?! 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
- e) I9 T7 |) Y/ {global-proportion
; @3 U( H3 n2 O% i6 ocustomer
% P! y8 J( n" m, n% n1 J' C7 D* gcustomer-no
6 ]- g! G9 [. n) y& Itrust-ok' a! j9 o$ U) V5 I% `
trade-record-one-len;;trade-record-one的长度
) ?! m1 P' @$ ]* p5 s]% e2 M7 k8 T& j  R2 Q6 A

5 V8 Y& r9 C1 R7 V& q2 e( K;;setup procedure
  b9 \: R# w" p" X$ P5 e) N9 \: ?# S8 _+ l7 ?4 \% }
to setup) y' ?+ Y. ~# S. o* Z
! x( U6 ]- S0 ^8 `. E
ca
+ a9 a' ?' t7 H/ J2 a

; `7 b, d7 L7 ^- g# Yinitialize-settings

3 B! t0 c( g! I+ |) U5 g) R* P+ H6 R/ y$ K
crt people [setup-turtles]

! q0 U' H+ O: y: O+ n! _
" \6 X  B& R" ?7 E; jreset-timer

/ O: W( A- o7 @
7 }0 s3 u* S9 E1 R6 k1 Bpoll-class
1 w5 a; k/ @% W( D
  n( G3 ?( v2 x7 Y7 T$ Z! i
setup-plots

/ ^  Z+ ]8 I2 ?5 }; d/ O1 d4 r" |. }# N; b5 h; A5 ^0 o
do-plots

* B5 `7 w9 Y3 V2 `5 hend
7 T" }9 w9 l0 \
+ Y8 ?+ ]9 ]& E: ~  c& Nto initialize-settings2 V1 {/ ^6 M) i' w

: `- W/ ?, p7 p3 W, x# ?set global-reputation-list []
% `1 z7 j; t' p

9 k. _  c2 I. vset credibility-list n-values people [0.5]

  l- X1 X: j0 ?3 ?6 s; g3 a5 u* G3 K5 P4 M8 }: k
set honest-service 0

+ X. D$ p, ?( _1 Z
/ G: Q3 E# r! ^set unhonest-service 0

* i# X6 X& W) C
$ V& y4 H% P* q: w9 Lset oscillation 0
( i4 {9 c, p/ h( Z) F" f# O
# e+ W+ F+ s, J1 v+ V+ D& J( v
set rand-dynamic 0

: F4 g) O$ e2 R# bend& s: K/ v: K, c0 Q+ z3 w3 F

" a( N, z- h( {to setup-turtles
* \6 W0 N1 \' b9 V% _9 a0 W+ }set shape "person"/ u9 @" b- b0 W
setxy random-xcor random-ycor1 z! }! \7 Z$ E. K" e
set trade-record-one []
. m) B4 J# O( n
0 |) u  R+ |8 W
set trade-record-all n-values people [(list (? + 1) 0 0)]
+ ?. `# r% U& F# h* _
0 P' L- S6 |) o! r5 I
set trade-record-current []  N1 U  \) K# q9 _" O& n. b
set credibility-receive []2 n" v! T( x5 F) S
set local-reputation 0.5
% B3 a5 ?; ~0 \set neighbor-total 0! n9 @* `& P& n$ s3 y
set trade-times-total 00 o( C+ @2 [9 y! S# \) d
set trade-money-total 0. j9 F; b  M' v) K, o
set customer nobody5 S1 P# z- B) d; j# k* Y
set credibility-all n-values people [creat-credibility]
' I, g0 s7 B' Z# B& N& a$ n7 B& j6 jset credibility n-values people [-1]
2 ^0 r/ _+ c  ?* k7 P6 k( _, Uget-color: g" y* Z" X3 u; @0 o4 s

7 R1 `+ Y' p8 jend: k& n. v9 C- N  I/ H

9 j4 L/ A) p! N2 r+ Ato-report creat-credibility- @' U. P: v5 B/ x
report n-values people [0.5]
; p! t$ e- B/ m, Rend
3 [: K% `6 e% b& u) c( `$ w* r1 {
3 n: i8 q5 ^9 K/ rto setup-plots
1 ?- Y' S' F7 k) H/ S. @8 |
" R/ X  `6 @( Z9 l% H, W9 Cset xmax 30

# n; M  n! [  G* s6 S8 X
/ S# A. X3 c8 {% N( M6 Rset ymax 1.0

" C7 n) K5 s* e6 M7 [( s7 n6 U- V5 M
clear-all-plots
) V5 y8 p, E3 e) G' H# a; [

- z3 H. S8 W; v. I$ V  r4 S8 `! h3 Gsetup-plot1
+ c8 [% \! `2 Q; a( v

. P2 r9 ~! d# C' y4 dsetup-plot2
* U7 O; [7 T7 K" X9 @$ e/ C6 {
  K( r% n# a" D- K
setup-plot3
) F4 G( x6 `, D2 ~
end
1 p9 t/ x1 a( b% x: M8 m1 T+ T1 X$ B
;;run time procedures; T3 |: |( O) h" q

' s+ d1 w. H! S2 M5 Qto go
6 {/ ]  K' Y4 f) ~, v% L+ x6 X" Q2 d! ]' N5 S1 s/ D
ask turtles [do-business]
# u2 e! z) b& e) b, Y; m
end8 a& T3 X# o/ @- W9 E

& h- a0 R1 ]& }" z* P9 oto do-business
- V' x) b# P( t: I" S$ {3 c, ?

! E4 d! j2 j8 V. E/ S; @- G$ M) z# ?" U( C
rt random 360

# W7 L+ @7 l6 c. o5 t; }6 F/ O2 f
" l+ A( s. V! L& g. U6 c6 k$ ^fd 1

. @3 O" N2 W$ [# k, n% `+ J( l0 Q& M! ^( J7 j/ ]
ifelse(other turtles-here != nobody)[
9 N2 p* d* F0 c8 C* X
/ e( S4 m* K; M6 R# j
set customer one-of other turtles-here
7 j* G% F8 W' T5 @. A  h0 ?8 i/ w

1 R' U/ T5 L2 M; Q4 [;; set [customer] of customer myself
7 v& F: I( h% M/ W" @  m

2 b8 _0 d. {* h3 iset [trade-record-one] of self item (([who] of customer) - 1)
/ L, Y0 j* _7 x' w, }[trade-record-all]of self6 q$ d( a9 m6 v, n. B/ ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% q* H, B7 |/ s  s! g4 H* j( p  ^6 Z3 V9 @; M3 y2 p3 x
set [trade-record-one] of customer item (([who] of self) - 1)* l: X1 V" O" M/ d2 g  H2 I2 W
[trade-record-all]of customer

0 |. r  H0 g2 x* h& R% T' ~: N* M0 t9 E. Z7 T
set [trade-record-one-len] of self length [trade-record-one] of self

! m" q  u, b8 ]; [3 T7 y9 r& Z
, X6 n! A9 W7 S- i/ a+ eset trade-record-current( list (timer) (random money-upper-limit))
/ A8 B7 J7 w4 W# m/ H; \
- z7 b% e5 s+ i, y  I+ c* x
ask self [do-trust]  i. M: I; W( ~/ y& _- H
;;
先求ij的信任度# I) m) _: J0 ]) ]$ K) {

% p8 G' G$ ?" Y" m4 a. C/ \if ([trust-ok] of self)8 u4 y/ S: {3 F1 E" O# r% L/ _' L
;;
根据ij的信任度来决定是否与j进行交易[
: t* R$ Y' F9 Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ T" n2 o& E8 q! V2 q& b) q
+ E7 p& m7 ~  l" k[

! [' D3 r- S8 V+ [% w8 Z+ p/ b6 w2 v" M( o( i  x# }( Y3 ]! `
do-trade

' t0 Y1 h/ |6 ^: ?, _$ T/ E; o' {' y% n* o( l! T
update-credibility-ijl

( W# _/ C5 |9 e  B  w& B" f5 R! ?& `; i$ `+ A7 Z+ v4 O9 x
update-credibility-list5 m7 Z. b/ u9 h) g4 J1 ?

  l' S4 A, T6 S, N# V: m: X
8 [. e: V1 e5 d  zupdate-global-reputation-list

3 Y6 B% h% V$ r2 O$ I" t8 g) o# |* o- q7 L  f5 {( d
poll-class

9 I& ^+ C) e/ L3 o! l$ c4 C& {/ r3 R1 R- I, n* H$ v
get-color
. c7 Z& ~! u4 z. A; A

7 D) W( Q' T  ~9 N2 X/ i]]9 W- X' D1 y, n) a" W
' V% s. W2 ^; ~3 E; J4 @
;;
如果所得的信任度满足条件,则进行交易
7 i1 ^9 f1 ]$ w- o1 L' c: G0 Z7 b; Q
[

% }( Z4 W$ n: W9 @5 E7 w7 h5 F: T2 T8 q+ h3 {$ t
rt random 360
) e+ t- w$ K# I: c8 T- l* `
% i5 ^% p# L4 g% D
fd 1
+ }  Y+ n0 N# J
& O! ?' R; O" o$ w* g1 B) B# W
]
# ?3 f( o$ ~4 S2 W$ r! B  q% C" \% @

" L$ g9 p  Y0 q9 W1 Y0 [* Xend
9 Y' r2 |' [7 X
0 L7 G9 ?. m9 e! M7 V8 Y
to do-trust . o  H) }( N# w. E, A9 G
set trust-ok False. A, S- ?1 `! S# H. y- w* i$ O

7 M9 y. d; K+ ]' o0 J( {$ v! t( n

2 J+ y; V5 l4 r- E# L" K: olet max-trade-times 0
& j$ z8 {: t- Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" r' b/ {* h. }. r2 D
let max-trade-money 0" {9 f  X) s& `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 \8 E4 t5 u, wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! C0 @, `6 h* X4 j0 k& J: C* Y9 b
3 r, B. c7 s# P  K3 Q$ A' |

- @( ^0 K1 [+ e6 K- u' S7 x* S: jget-global-proportion. ^2 ~: M4 {* q6 J9 T' m- Y
let trust-value$ x: l. [8 [/ h& U3 L( N: F
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)

" \% ]3 r' O& `" m! q, o2 E' P1 e5 mif(trust-value > trade-trust-value)( L# r# x2 C3 [" h4 Z9 Y+ y& T3 W
[set trust-ok true]; h7 V7 U* ]8 t1 s5 g+ }) v
end1 ?4 Q; S2 C& U

7 b' m  w; g9 X& Zto get-global-proportion- F3 R# t2 o9 C. [0 F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ Q# f4 W5 p5 X[set global-proportion 0]
6 b1 L4 i9 ]+ S; z! e$ x[let i 08 ~3 V2 s% b  f' n
let sum-money 0
8 a: ]! F! S  a9 S; |while[ i < people]) y, J( C2 w, H& F/ F+ |* p) w% ^
[1 W. ]0 S2 O# `% X1 S" x
if( length (item i/ l4 S- [$ I  a7 G
[trade-record-all] of customer) > 3 )

0 }6 _( N. j& ]: X) c- \4 J! \! `0 a[  P; \9 H" o" R: \3 B) ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" }6 M) W) i8 A8 {2 _' e  B- `]: s/ [% t! Z, R' N$ E" b
]  b4 f" f1 x: M: {. y0 d/ M
let j 0
+ v: Q3 W2 z4 slet note 0+ A# a( U* w1 L5 M! o
while[ j < people]4 S, v" j( d3 K. o2 R
[0 U% N0 A5 l' P- \
if( length (item i
& C$ ^5 V0 ]! Q! g3 O; _: B[trade-record-all] of customer) > 3 )
/ [1 @5 m. s5 ]5 h7 z# J
[
3 \2 P" e1 N; m8 \) yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). H6 b2 S2 M% p9 F1 {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 c# Z1 O1 g% |" b1 [% l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# }2 o0 H0 O5 u" l* n9 K3 y7 E
]: C6 M  D  u$ _0 d, g6 W$ L. a
]* Y% ~4 D* V; i* P6 Z+ Z7 C9 [
set global-proportion note9 W( N+ @+ `; g8 B$ ]8 ]
]" e4 u: \+ ?( u, }
end
5 B$ U' N7 ?  I% S) W
/ t+ F" U" w' X# a$ Jto do-trade: |( y+ o, r% R0 r' P/ ^" P9 Z
;;
这个过程实际上是给双方作出评价的过程5 ?4 N) s2 p8 C& S" v, X5 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# Y! s9 u) W! T) T7 E% _; pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- X6 N* H2 G' _8 ?7 q* j
set trade-record-current lput(timer) trade-record-current
; ^8 B7 s& H' I- W9 O) C' f;;
评价时间1 a1 u1 ]- v& P9 g# a( N+ ?
ask myself [7 [; n4 E  u! D# p6 S
update-local-reputation* a6 ^( ?8 c* B6 r
set trade-record-current lput([local-reputation] of myself) trade-record-current
' J# d1 F/ ]6 @) ^% O]
5 y* ?' O; s& Z3 j! Yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 K! i% |' v" o) [9 V
;;
将此次交易的记录加入到trade-record-one2 @% d( P1 o' e. k
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* u# {0 E0 Q5 C. ]) h( v
let note (item 2 trade-record-current )& j- |- K8 w; ?# t3 a/ R  z7 u
set trade-record-current4 }, o$ g: R1 P
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 N3 |% D5 F. `) iset trade-record-current
6 R$ c- D" U, i(replace-item 3 trade-record-current note)  ^6 p8 e4 _: s
- Q& c2 D; m( f+ Z# J# C, ^# ^1 m+ P+ \7 V
9 h* Y- n- i  C( N$ `9 S
ask customer [- T4 f. P- |- e8 `: ?2 r
update-local-reputation
# Q8 n4 l2 a4 L- `5 P, Qset trade-record-current5 Q. L; d) o) B8 b8 ^" h1 q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( F3 f7 V& X' G4 N
]3 @/ j. [; W8 i$ p
1 A% X+ L8 m( B. a% C( o" q1 W
2 e- I. S( h- R; T
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' N2 q8 O- z9 q  E

% O# q% I8 |& e2 ~* m/ u4 cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: N2 @* y4 ]8 W9 T% q;;
将此次交易的记录加入到customertrade-record-all" }* f9 `' [0 V2 G; i
end, W& F5 P* s1 V# ?0 e7 O$ z
5 c: t1 k( Q3 n7 _2 s# s, F
to update-local-reputation3 B2 @# ?7 w; H* ]$ |/ [
set [trade-record-one-len] of myself length [trade-record-one] of myself$ ~3 Z% f8 h3 ~% K. W2 \
5 W$ R" Y/ q" {* u/ |; t9 f/ X- e
! t6 U3 c* k6 p2 k- _2 R
;;if [trade-record-one-len] of myself > 3

. D. z) g6 D! V5 S* Y! z: ]update-neighbor-total
4 _" Y* P* G) L+ X;;
更新邻居节点的数目,在此进行
; {8 z% k( \( Q7 T& S; P0 y5 plet i 3; ]! b+ L- w, A7 J! h, q8 R1 {
let sum-time 04 W& f' U8 ]) H- ^
while[i < [trade-record-one-len] of myself]
  o9 j  ?8 y6 V- a- i[
9 v! k7 f, }% t0 M5 v! Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) g# G0 q, Y2 zset i5 ?- Q! i/ c' ~! D: G
( i + 1)
3 d* x9 ^/ o: P
]/ N6 h, y/ y3 c0 n* N
let j 3% {$ ?. f' E* V0 W! i: @6 V% O
let sum-money 0
& o. f/ ~' ]' r$ o5 w3 U/ H7 d9 }while[j < [trade-record-one-len] of myself]5 t  Z) I; x( |+ T0 N
[0 ~: o6 G, t) `: j% T
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)1 G5 V" e& r6 ~+ L
set j
% m0 G# o( ~  o( j + 1)

& R6 ~5 c; |& l0 c]
8 z& S9 n4 _; ]0 c' n! Olet k 39 j1 c/ {* J7 Q9 |
let power 0
% J5 n. y2 \8 clet local 0' A$ M6 V7 _9 Q7 r
while [k <[trade-record-one-len] of myself]
- R! v: ~4 m0 ]8 a8 s9 s- A[: k; x$ T& n" L, m/ }$ B
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)
& H2 ^( V$ B. @: S: w9 dset k (k + 1); p* _! F* @9 w  x9 C! h# D
]: Y0 T& l3 [+ A% v- D& s
set [local-reputation] of myself (local)8 ?" r; ?2 d- i: n+ H2 [
end
; L3 P- t8 e( U) l$ u' A7 e
1 j0 E! o9 d: Y3 }# Ato update-neighbor-total! H% }" r6 b# c. _% q

9 e- e2 t) `# |+ Y; ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 l" M0 n+ N1 i/ n( ?! z& b

& Q  L) T7 E- L! S- I
( L8 n3 e; m2 U0 T' x$ `
end# f7 U- S. j4 w8 ^

- c0 p9 L; y6 M5 uto update-credibility-ijl " b8 l6 [5 v5 |. ~. O! s- Y

3 s$ m) O) w: C: m% D/ v;;
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。( P/ t* @( }8 E( q$ m
let l 0! n3 t0 ~8 Y/ z, [: d' {  T
while[ l < people ]
6 E5 M& n" f9 }6 G;;
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
' Z/ K: c) c! `: ~4 C. T* \, D# ?& \& a[6 @( D* A9 [2 g4 R5 U7 m3 N1 k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) ?& ^, M. T6 P/ qif (trade-record-one-j-l-len > 3)
+ j# t& Z, h+ 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-one2 k' e  ]# W2 D2 D8 r* c
let i 3
, V4 k- Q) e6 O& X( ?let sum-time 08 N1 n" F& |2 o0 _  x6 X
while[i < trade-record-one-len], B9 m- t$ E! B
[, n3 z  w  f: _6 A
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 x: e, Y: |( h: b! S' m9 P
set i. e$ `. `2 F) K$ ~* j/ e) ?
( i + 1)
/ L1 ]' i& j3 e8 T' i7 o* Y
]
4 ]  U/ q2 P1 ^5 |1 elet credibility-i-j-l 0# K# T$ u  m$ J
;;i
评价(jjl的评价)/ r* e7 O! d& n8 T1 c; Z' c
let j 3' M& B3 }; w/ t9 f0 O7 E0 L
let k 4% ]4 Z1 {& m3 _0 i, s3 M
while[j < trade-record-one-len]
( e8 K2 S+ f0 f[7 k8 C) U5 f& A5 X2 l2 b
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- k& y: A1 Y" I5 a! V7 C
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)$ Z! W+ j0 G* ^2 f7 A4 F( G' O
set j
, W  ^3 L  {. n5 M+ d( j + 1)

& s# W+ i- @6 @4 @! g& }& a]8 f4 W) ^9 v  q
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
6 Y# F, Q9 x# d8 |( V+ u9 Q) G2 u

5 r4 Z% e# M" b% }9 A* Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ R$ N% i+ G+ p- |  x;;
及时更新il的评价质量的评价
' X# F& d1 Q1 q" Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 C) M9 ~: x( z1 a
set l (l + 1)
4 L  N% |4 ?" G+ J( t5 Z0 i]
3 l1 D( n( A/ `end
# k& g) T1 k8 y3 ^8 O3 l1 k( n
# l" c3 f/ R6 b0 m$ Lto update-credibility-list) u* a2 E1 f1 J- s, K5 I
let i 0
; s6 F: l) a7 L. P/ |$ b8 T8 D) `2 twhile[i < people]0 _8 G; [) ?" {
[* E" Y' n3 g, J# s. ~
let j 0
) S+ {) Q7 p/ h. n# U3 e3 ?let note 0
5 @2 V2 `4 p% h/ E3 ?! }let k 0* p/ q2 g6 [3 A4 |& q. O' Z7 \
;;
计作出过评价的邻居节点的数目  g0 U( k) X% o7 i  [; x+ v5 b4 c
while[j < people]0 S: |1 S' n! b: G. p; B, D
[
1 Z$ }1 G8 c( c3 @7 L- k0 Zif (item j( [credibility] of turtle (i + 1)) != -1)9 ~5 |6 T0 O+ K" J! R- Q
;;
判断是否给本turtle的评价质量做出过评价的节点& v  n& Y) |* V: s- G
[set note (note + item j ([credibility]of turtle (i + 1)))+ v1 X5 z' P/ i4 ~; n8 N
;;*(exp (-(people - 2)))/(people - 2))]

2 C8 `0 x, g6 h3 Tset k (k + 1)
2 y( e- @- W$ w% U]
4 _8 \, d+ O) A5 L7 h9 U/ Pset j (j + 1)
& p( O4 b, i1 J7 w9 e9 V3 `]
) m2 I$ h0 w' ]3 n; wset note (note *(exp (- (1 / k)))/ k)  g$ x% x( a$ M% o4 O7 l6 M2 F" A
set credibility-list (replace-item i credibility-list note)4 Q; w- I( M$ L1 M; c/ u6 T
set i (i + 1)
; Q; t1 K5 T5 G: A7 A* }9 v]( [. O( ?! A+ J$ I* q1 e& [1 f
end( i9 v$ M& j* K( c% k5 `+ O

1 X. z5 d: H! m! R  i, lto update-global-reputation-list
3 e* Q7 ~( i9 I* ]* Flet j 07 K* Q" u( G" O. M5 m
while[j < people]
! u' U  P6 U( \9 L2 I8 `[
  w4 z. }7 {' Y- g0 Elet new 0# x. w' X5 w) M+ I6 i) W9 x
;;
暂存新的一个全局声誉7 L. F; _4 @; U0 q" q. v
let i 08 Y% j" X! ]' P; `5 l! u
let sum-money 0
* {/ W, B; k4 f' E" slet credibility-money 0
# Z8 n+ K& o& a8 V+ r+ [while [i < people]
5 R3 ]- P9 H6 Z( s; L4 j1 M& p[3 ~' v! Z4 i& G- G+ C$ a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ u6 ~. l" k8 e2 K/ V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). j2 l9 Q6 ]2 C, R$ o
set i (i + 1)
; E2 \  E3 D8 y# m/ Z) |! N]4 ^  R" W. b7 i; m  t$ n6 c
let k 0
" {7 ?/ _# ~3 q. a0 j) h: alet new1 0) k" p! }5 s1 s) W, P  [, z
while [k < people]8 ~+ y# G* n* r( A2 o) I2 h8 D2 q( c& ]. B
[# A  n# g; E! A4 h
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); _7 A: ^$ ~- e
set k (k + 1)# P8 i" [# H, t5 T
]8 E3 M8 G9 @" q" p$ g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 o/ v8 @& t# m8 kset global-reputation-list (replace-item j global-reputation-list new)
) e* {- ]- v$ O5 C& t: sset j (j + 1)5 h- S2 W! M3 I7 R1 A
]! r) \& N$ G% l
end
2 F/ }1 G) ~% f# T4 s
/ M, b) v+ G. n: U/ L0 f
- u* R0 Y2 x# v8 ^$ a. A
" D2 r# j* ^, g8 {6 {to get-color
( V. _7 {: y! K. E- `2 |' l) ?$ s; E; _! ~- w3 a
set color blue
$ p$ a; t9 Y1 Y( ^4 W+ W- y
end9 j# D$ a+ V3 E( C3 C, d% M3 w$ T

% H) \3 N" g$ M% cto poll-class5 o1 z7 D4 J" [  [5 X
end
, _) `3 [0 J2 U+ |- K7 D
* f& f: i2 i0 d/ F1 ^' Rto setup-plot15 M' `8 P' T9 ^1 v  B
$ c8 V+ r5 w# s- ]2 x5 v
set-current-plot "Trends-of-Local-reputation"
9 J* P9 m& |" R1 U/ S- P' ]# A

% k0 c& H, O* a, oset-plot-x-range 0 xmax

: i/ m( A+ [) P4 s( \  V& t9 e# D- F  t* X7 Z
set-plot-y-range 0.0 ymax

( w; \  c, E( |9 x8 g/ J$ e) y  e) Oend
  y2 T, J8 P6 t' Z' G1 s4 \$ I: L- h3 `; f0 s
to setup-plot20 ?# T& Y$ [6 i

0 w- v3 J/ ^  D) c" m3 Fset-current-plot "Trends-of-global-reputation"
: e( b  b/ Z' j6 _3 i  x
: E& m% s1 O# p
set-plot-x-range 0 xmax

! I, \7 C( L0 S7 b& c! l0 N' X1 \
5 x4 {9 s  f" ]& m. Fset-plot-y-range 0.0 ymax

# ^2 p* N$ {0 uend
! Z" `7 x2 {* N& w! k! _
4 ?, E4 L% i& k2 I- Xto setup-plot3
5 b9 d$ x+ B8 \1 s! G/ H* U$ _5 R- N, R. o% a
set-current-plot "Trends-of-credibility"

) M& C# D' l6 q7 s) Q5 P, G6 A. g" U4 T. k
set-plot-x-range 0 xmax
1 o7 U2 Y+ b, V2 Z$ m& q& I4 s9 V
# {3 {, V: z/ R9 B& N8 A1 V
set-plot-y-range 0.0 ymax
0 q: I5 f6 _. l4 t. C
end
8 A. i5 N  U& G/ H& H  l; z( a! V0 j0 Q7 `
to do-plots5 S% v) b. f2 h
set-current-plot "Trends-of-Local-reputation"
+ b1 N( D* r& Z7 Eset-current-plot-pen "Honest service"
3 l6 r. T* a5 o" E& Y* T' `/ I, |end
$ o, L4 E) A/ a
) s7 [/ w9 V5 K2 S[ 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.
% b& `; j# B' s: q: P
* A2 k; T0 V. [2 r1 B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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