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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:
5 M2 }7 L! ^7 rto do-business
$ w" e% c7 r( U; X$ [4 ` rt random 360
- g* {- m) J$ `5 j+ I fd 16 j9 S* O8 b4 r0 o' `3 ^& c
ifelse(other turtles-here != nobody)[
* c- M0 V* m/ G   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& n2 t' l# \7 l/ Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 P4 G2 P+ E( e3 |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 W9 I% a* q/ }4 C
   set [trade-record-one-len] of self length [trade-record-one] of self/ _: e5 x+ y$ t. C" C
   set trade-record-current( list (timer) (random money-upper-limit))
; ]1 _- ]" a9 k& O* T( Z' q+ b- R! Z' L; Q- h: H
问题的提示如下:
1 H1 H5 o2 |5 N: @4 L
/ h0 O: ]% }' ~& a/ yerror while turtle 50 running OF in procedure DO-BUSINESS/ a* `7 c! w6 ~/ j' l2 j# A% K! ~
  called by procedure GO( M2 e( S  v. K' @% w6 E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. ?) y  a: Q+ q" _  Y+ k' J% P3 R
(halted running of go)
  x, ]* U9 g; {/ G+ \& U3 q: Y2 o  R7 P: J
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~~
' j9 X0 @6 {; k, b+ ?- t+ R" m4 v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
8 J5 h, e9 h4 D/ e+ v9 S7 {) wglobals[7 `$ d) Q) j! R7 F
xmax
% p$ i$ M% k8 y3 Nymax
9 s) y# w% z# z  H7 K7 \global-reputation-list
; M/ Q7 ]# ?6 J/ ?  ^2 B9 ]6 f& l3 y8 @
;;
每一个turtle的全局声誉都存在此LIST& u% W$ `+ _$ l: b8 r% Q
credibility-list9 w. q: x& z: {5 v# Y( t3 Y, O, l
;;
每一个turtle的评价可信度
2 ?7 w2 ~3 b% A9 O8 B2 `honest-service& u/ ]4 p1 ]5 d
unhonest-service
4 g( ]3 h/ ]+ r3 e/ M  xoscillation
) C: Z9 X" l$ R, C6 J& V/ g: ]rand-dynamic- R. ~+ R8 I. A0 O
]
" F0 p0 I9 ?3 E2 ?4 e  |
3 K. t/ g" t' a9 rturtles-own[
# d5 y6 ]. A( D. E, ?3 c8 itrade-record-all
6 @) E) D) U0 U6 b;;a list of lists,
trade-record-one组成
( ^% G' z' L, F) E- O7 Ttrade-record-one
5 Z8 k! x3 u7 f/ V9 }; C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 P9 ^5 |) a, T$ _8 J' T; C! o2 ~  n1 q( R: U' V
;;[
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]]
& B" H! _$ t( K: A1 B. 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]& ~) j' K  L; `* \
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& b! f* n- P& F0 }" N
neighbor-total
, |% G: k1 v! A# G+ `  l  C3 ?# a8 `;;
记录该turtle的邻居节点的数目2 g9 _/ C% H# [' N' a
trade-time
. q% n  p: j0 `+ Y5 b;;
当前发生交易的turtle的交易时间) E+ T* @( j0 C( L5 x! F, l
appraise-give9 G7 s- h: d* K: A6 I" L
;;
当前发生交易时给出的评价
1 h. s1 \8 {4 U$ [) g  H/ S. Aappraise-receive
8 h) }% r, X: Y( T2 N;;
当前发生交易时收到的评价" v: `% [  G* y2 C! B$ e/ \
appraise-time
- Y  t, ~" a; ?/ w. g* q# \- e;;
当前发生交易时的评价时间' V) R9 r# y$ }, M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ N( t9 d. y: {2 C7 f$ Ptrade-times-total
2 l5 Z% L/ a. `: E* M6 g4 \: e% l;;
与当前turtle的交易总次数0 Q# s" K4 v- S; @. k4 P. X
trade-money-total7 [: g3 |2 }; o1 V
;;
与当前turtle的交易总金额) P8 r+ Y4 _( n5 i
local-reputation
* R7 D& L, W3 J8 [" X  M$ _global-reputation4 C2 u$ s# `0 T; d  q' m' o) A( j
credibility+ k+ |$ [* I' s+ _2 B2 J1 }7 z
;;
评价可信度,每次交易后都需要更新' h% Y# h( \! C6 S7 k. `2 @! A
credibility-all
; f, g2 l4 X# `' y# O9 O) f;;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
- ^. v7 B- Q; Y/ C, G+ [1 O! g9 E5 `$ U; j7 o2 d! F1 p
;;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) m; R3 w+ c! \
credibility-one
5 L% M6 Y) N/ X4 H! V7 h;;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
! T! [. Z4 r- q  uglobal-proportion0 \( ^+ G3 M9 Y3 ~  V
customer2 S* D6 g1 W5 C; b8 B: y
customer-no( O6 g. ?4 J6 u1 x- {* R
trust-ok- v- l. G2 m7 b/ p1 L: S
trade-record-one-len;;trade-record-one的长度/ C1 i/ K0 ]" Y$ z4 g
]
3 I% G" T' ^" N6 V3 u# R0 g1 i: A5 G/ D1 [0 s
;;setup procedure
; s4 m) M6 t. M5 o0 q! P/ `7 Z9 r8 [; h% M' e2 g- _3 j
to setup4 B7 Z& G6 g' Y! L4 e  l7 U. ]
+ p" f+ l2 s" G% h' x# w' E
ca
/ C2 y% {0 ?+ N
' j$ P, l! X, z7 }- p
initialize-settings

& F% U) O) P$ w3 W% X  T5 U7 P
& V2 R8 n$ }' G4 q" [crt people [setup-turtles]

8 X! n1 Q* G$ u% w/ A% ?, Z2 s% t
- |: k2 k/ d+ s* freset-timer

8 A8 r1 _' h# l% c! `
# K0 \; K# r$ R$ h& p% lpoll-class

2 v0 B. u) q5 E% j
+ S, c8 @& n+ W/ nsetup-plots

, p" o; C) e! h' w+ S% r7 o, a2 N6 d5 X* W- Q  u; G
do-plots
6 u/ r( d1 S& ^2 Z) S
end! X6 r7 W( }0 G8 G" R( E

" U: _8 A* q3 v. O0 k, vto initialize-settings
: ~# \' k. H: O  {( j& S" s$ o( T. m( I4 q. ]+ D5 p3 M, [& r
set global-reputation-list []

6 H- F$ ~3 O9 H3 D. r4 O) E
' a$ N  Q" V" ]5 Rset credibility-list n-values people [0.5]
+ q! x- `. A* d
) F3 w! t; a# r: ]! ]- x! R# ~
set honest-service 0
1 u$ L6 s7 b, P) i- \$ j
" [' f* U" |2 L" v
set unhonest-service 0

+ B. k; l* B: i5 K$ V; |0 P: i3 i% w9 b% \
set oscillation 0
  ]# j+ S3 [0 `0 _  q; ?6 b

0 m+ f. Q/ i6 P2 J7 z) lset rand-dynamic 0

* L$ r# C6 k# h' Kend4 u8 H" `3 ^6 B+ [6 m
$ r3 t/ a) r! z2 ?  X3 Q+ U
to setup-turtles " j9 ^5 w2 l" [0 i1 h
set shape "person"
' X9 H* z5 a2 o6 `8 S! ]setxy random-xcor random-ycor
  n3 w% N* R+ W: S3 Q+ B3 wset trade-record-one []/ E8 F' k8 M4 [0 u; f

- g) a6 _0 z$ s, W7 |& Z6 \( |2 Lset trade-record-all n-values people [(list (? + 1) 0 0)] & u. H: |) M; F2 O" Q! M+ F

' E" {0 t$ _! m" t+ V/ Qset trade-record-current []
; j, z8 w, b* Mset credibility-receive []) q% Y1 v) ~# k, U6 r1 Z
set local-reputation 0.58 c2 N# B2 F3 `
set neighbor-total 0/ h$ [3 F3 q8 w3 s' a
set trade-times-total 0" h. V, }% b; y
set trade-money-total 0
+ D1 M5 a" `  Y: B; O! nset customer nobody  H7 z* _5 B3 a6 f0 }$ o
set credibility-all n-values people [creat-credibility]
  D3 G) c$ _( Y9 Z: A# vset credibility n-values people [-1]
5 S3 N% u9 V5 `# t3 T3 {2 |get-color* n0 w" p0 D3 x8 D  P5 b4 E
2 s, Q7 S: b4 _2 Y- r, ?4 _
end7 n" i7 G6 u- i" s% O! M
3 c! k$ v, w. C3 `( N
to-report creat-credibility1 d) u/ k$ G' f" M
report n-values people [0.5]
# P0 q2 N- x6 T7 U1 z# zend1 w1 U) Q! k7 x& L$ N

: F* B/ W! H$ }1 xto setup-plots. ^- [( `' p  D
5 {  g) E7 ?3 }5 Z- g& F
set xmax 30
' _5 d/ A# S" y4 K4 w
7 [' l$ H7 D9 j( I1 e' O" \
set ymax 1.0

; M" H# t6 w. Q) M+ ~% ~, r' ~" t
; d* L+ p8 P6 w) ^" sclear-all-plots
' E2 ~' W) u& Q( X# I. y
: Q. ?9 W7 K0 p' A( ^5 A/ C; y
setup-plot1
. p$ Y  q- X* d* v

. G9 B* |5 j% B! `7 rsetup-plot2
% r! [! b# T2 z( X# d0 W# U
( K) b% S7 ]8 @$ j0 M% ^. `! e, G
setup-plot3
* L' @' p; ]+ _6 F' e
end; s/ a( v& v  l9 i! i. A! ?! L: ]

1 s. O8 ?9 X, t3 p( ?;;run time procedures
/ J5 U7 s  E  i  a4 [' P1 t0 }! W$ l6 e0 s9 q2 U
to go
3 a8 ~( [/ U# B$ N9 b2 n; K0 u3 l9 O" D; v$ l# \$ F3 @
ask turtles [do-business]

. p6 F0 ^, o& W% e, p3 G* pend0 s9 y6 L7 N3 u! ~9 A  u  x

: v. R& f1 Y8 g2 Mto do-business
# _1 _0 B  a+ `% V9 w+ C( ^# y& @4 j

- b2 \" Q8 j8 U: N5 K/ s) G- \* `6 _4 g+ F; i4 }2 F
rt random 360

. n( \" c5 K2 P( C1 s# X0 V, }1 y
6 K  q2 j- U" i- J0 W! k- ]* b: Pfd 1
5 C5 n/ ?+ C1 q8 B$ |
3 Z7 O" z4 u7 Y$ ^6 o
ifelse(other turtles-here != nobody)[

- Y  r* |; }8 G' \* o  O8 {' K
: r' }, U/ R6 {+ h* w) q# P+ wset customer one-of other turtles-here
% |% g/ _3 Y, ]

& O; B: M% N9 |. I;; set [customer] of customer myself
3 C, K9 o- u. j& K

* l  [' O) \$ Aset [trade-record-one] of self item (([who] of customer) - 1)6 q5 v$ R0 A6 o8 r/ o
[trade-record-all]of self* @# I" u+ q0 w. n4 b% X: Q- s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- Q" n9 }$ H! P+ \5 H# h8 [( G2 A3 }2 R, D
set [trade-record-one] of customer item (([who] of self) - 1)
9 u3 U; A* ~5 J: E2 C[trade-record-all]of customer
( }, P( d- {6 j8 u

: z" C8 ~3 X6 `2 dset [trade-record-one-len] of self length [trade-record-one] of self
* U% `. p) Z, `% [- O( M
1 Z  U6 A" Z. u4 {: n8 b
set trade-record-current( list (timer) (random money-upper-limit))
4 e, z, l" p4 X$ N  w* C' d. Z

% i. K1 A$ |6 O5 `% M- Bask self [do-trust]
; C: {: m) D0 K: |: ^;;
先求ij的信任度
! F2 E/ l  x; N8 r5 y/ c/ {
( H6 H5 N/ y; Z7 u1 N& R" y; tif ([trust-ok] of self)
- t7 w# e8 ?& Q: ]+ Y6 A/ D  \;;
根据ij的信任度来决定是否与j进行交易[& a+ ]& K- W% @; K+ U2 p+ r2 g' `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 t* b6 B: r) Y0 s8 F: m, W& D/ U
[

! G* m# e" `3 p
+ B. [5 @) Q* l) gdo-trade
/ w/ ]$ q5 m1 ], |2 ]
: j: H) @( O5 M
update-credibility-ijl
+ M0 {9 V/ i$ h7 a0 v+ W

2 `7 X3 L$ V  ~, nupdate-credibility-list
1 [+ K9 R' _, A: c; ]
+ K- C: P, T6 V6 g. ~

! ]! }# p, n5 x  b0 n, d# iupdate-global-reputation-list

8 M* o" y# ~9 ]. w% l5 w- V3 j9 @0 b# [9 x0 H
poll-class

, U3 Q5 ?3 m9 v/ U! _
9 j7 a0 z) b1 ?4 O0 jget-color

0 e3 g! t& n) q& c, T. _7 u+ q/ V% |$ m
]]6 s5 L/ D9 g$ |. o) g0 [  O
, D2 v. j- y- Z7 ~' w9 ]/ }3 w
;;
如果所得的信任度满足条件,则进行交易
* x( ~- x( V! t+ w) I" m3 ^/ s7 Y: r5 W; {( m7 Z: _* R. D" ?2 o# I
[
7 _  n6 F& g% G4 E. D: E

4 P, A; k  E# ?& Y. ^& jrt random 360

. J% Z5 q4 r, B& V  b, }2 }; L& Z8 s1 k, K: a5 W2 a$ b# z) ?0 O4 k
fd 1
6 B7 B0 S/ G6 P; n: K, }( l
4 d, _3 S- h! p. }1 t1 }* e& g
]

5 o8 Y- F8 @# L1 B9 {
7 [5 [- {8 m- z7 |& lend
" O' w3 C  X% `1 ?5 O

) W( W( z3 Y4 l7 A' vto do-trust $ Y9 j# R( \# Z: g0 \2 S6 F) ~
set trust-ok False
0 r0 m5 L- J6 U$ \& z8 p% L; H: }: G/ \: ?

- J8 g. o" \4 \# s  Dlet max-trade-times 0
! m5 C$ o+ F& g  m) _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  ]- i0 R4 @, Ulet max-trade-money 07 s% k( w3 j' E( T1 R4 E, p; A' l
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, G: A: l6 c3 b( s! l/ \# qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). D' p/ e3 N# s
# ]2 V/ n2 L+ a

0 h6 b& ~) Y/ D# S3 dget-global-proportion7 V: x' D5 B( k; Y9 f7 B
let trust-value
3 k" T3 h7 S$ ]- [) k3 [  l/ {" \9 e; 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)

& N! t  A$ t& O3 B2 \7 tif(trust-value > trade-trust-value)
' ~! `! b! k, ?& B5 E[set trust-ok true]
1 ]5 g& R0 F. Fend# }% x2 V) e) L. J, h

! C* M/ S; F0 @5 i5 K$ ]3 ]to get-global-proportion
% w) u' I4 H3 U3 aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 o: l* ^- C4 S: m- P! q
[set global-proportion 0]
* F0 \4 z: b2 D3 y[let i 0
8 H9 H% }9 M  ~8 Y/ |% rlet sum-money 02 `! Z3 L: F) u. a# ?
while[ i < people]4 C" `/ e! w8 T" F  S# c% B% c) Y
[
+ D1 r7 B0 E$ z6 Oif( length (item i
2 w& R  ?) I& D* X& W+ ?[trade-record-all] of customer) > 3 )

( I3 v3 v; c' x3 }* O[
! @6 ]/ }6 p/ d4 e' z& aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 P$ s9 {" [4 y& {]
( U+ w% L6 m* Y, p5 h]- a* w! Z1 o# M% A
let j 0! x, w) E6 H1 R6 ~$ [. D
let note 0& x( B: L' T' f% x" q
while[ j < people]
5 M0 B7 h$ P) j$ \% s4 {0 c[# f2 p% f. ]/ I. ?
if( length (item i: e& W1 a. T/ g
[trade-record-all] of customer) > 3 )

) M4 _; V9 E* X* R8 ]6 k4 t4 l[9 {; d! U" Y  I& T7 z4 C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) X' l' k  o( T* x2 p
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 W- Z' Y, W  j$ x+ _. d. v4 h& o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: u- U: {# k1 M3 s4 Y6 n# q; E
]
$ }# Q3 k' z& K5 Y9 J]8 X2 f+ n  H" n& l* P
set global-proportion note
1 F; x' I  {5 M1 ~( S; e  r7 C5 c]" \5 r: Y# ?% h$ ~, D( ]
end, }! N- [4 k6 ^3 V0 Y
9 v4 t$ Y% F9 i# w. w4 |, u
to do-trade
  e* K, z6 t9 L* T; V$ Z% {# e! z;;
这个过程实际上是给双方作出评价的过程
5 o/ U' H% L1 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- a' Q: w2 k" ?, _, K* e2 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 B+ L" }0 f7 r- D5 u- F' [/ {set trade-record-current lput(timer) trade-record-current
! V& }4 ]/ O5 O/ w& ]! i& B;;
评价时间
) z$ T" H2 p6 Q! o; Zask myself [' s  {& F& a  H& k6 }; x2 v/ U
update-local-reputation
6 }5 P4 v5 l9 T' @3 dset trade-record-current lput([local-reputation] of myself) trade-record-current
" w, ?$ n+ k( j& a# ]' K3 @# Z]& k  O7 f; i8 _' l7 j7 A; M  q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. U! T7 }6 k% p
;;
将此次交易的记录加入到trade-record-one; L- r& o* j& F3 V/ Q$ _$ @$ {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 N. l+ C) a5 l; ~, P- ^let note (item 2 trade-record-current )
& G1 Q# r8 J1 A# b* F& sset trade-record-current; S! j/ Q; R, F! L2 B# K: F* n' F' X: O
(replace-item 2 trade-record-current (item 3 trade-record-current))

  J$ G; p# n; ]% l. I& s1 b2 L6 r" `set trade-record-current
2 s+ U: y( Z- Z' \0 w- s(replace-item 3 trade-record-current note)3 C) o+ \1 o# P0 K/ N5 A
2 H$ X* W& I3 {* H; F

! @. u3 ?% j" p8 V: e4 t' T$ pask customer [' v/ i4 B3 y! _
update-local-reputation
& w2 `, R6 b; vset trade-record-current
' ^5 @) J2 U0 q% J1 H7 b" z2 W(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 Y3 W' V  V% y
]
* D3 N3 Y9 Z* ?+ |& M3 E
7 g& U! _& ^8 `" I+ L4 f# x8 G
/ D9 c) ?" s: b; f5 O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% z( ^+ f3 a) U9 [3 ~0 M* ^  t
" C' S+ A+ t6 Y$ a' O9 w
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# `+ v2 m$ c! I4 n
;;
将此次交易的记录加入到customertrade-record-all8 C1 ?: t; ?% P3 W# Z- A" K7 E1 t# D7 U
end
% J- A7 M9 z# r9 U5 d+ U+ i0 O
9 j9 r: v7 A* v8 f) Ato update-local-reputation
3 B5 @* [. M' X% ?" pset [trade-record-one-len] of myself length [trade-record-one] of myself
$ T5 p# j# t% U! P3 U4 R. Y& S; G) K, ^: H8 M  K
- A+ N8 j, E! W- J  A( G, Y6 o, y
;;if [trade-record-one-len] of myself > 3

# m9 ]; Y4 a% c* x7 t) B4 supdate-neighbor-total0 l: [" M5 c6 A! L
;;
更新邻居节点的数目,在此进行; W; _6 h* Z$ s( @: p) l
let i 3% Y. c( l1 A" q
let sum-time 0: a% S* f. C5 n* ]+ c
while[i < [trade-record-one-len] of myself]
$ H3 a' t# Q0 y. H9 @[
4 i* u6 e2 h7 x# `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 v! m6 s, y6 S
set i8 v: |( P% e4 }' S' ?5 \
( i + 1)

8 w; G7 i( \9 M3 h. ?3 E]
9 m5 o/ e% B# B& hlet j 3
$ t" N) b9 A8 l: z  l9 qlet sum-money 0
1 c& L$ B' s3 q4 H- Cwhile[j < [trade-record-one-len] of myself]: W) d) K( G' C& ], \- D+ s
[% w* ]* A$ l) d0 d/ k1 d5 j
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)8 l# s1 Q4 n. E/ M5 _/ y! F
set j
1 M/ i  s7 {: P. j) r( j + 1)

" |& l2 ?. S. ]" c# D]
0 `$ I; @/ K8 U; p1 Ulet k 3
% j! b* |' W; R$ H( y# X2 slet power 0: g6 U+ U$ {/ h! m$ ]- V
let local 0" G4 }7 f7 g& N5 u9 Y3 C% ^: _
while [k <[trade-record-one-len] of myself]
6 j' r+ e7 m9 f- O9 J[
9 h- f8 V% {8 o) y) c  b9 H* ^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) " f, S+ Y( k- W5 t# r1 x* _! P
set k (k + 1)  M8 ^% M: D0 d" F# S8 \
]
, p' f" J. p% Tset [local-reputation] of myself (local)
; E, I' G: g! i  Z. _+ B0 o+ Kend" p% Y' y9 V$ e
% H9 o- H  }2 R$ j
to update-neighbor-total
( M9 p' c. V- Z. m# }9 p6 K! ]) \0 F$ v, e- e( ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) [: y9 _4 m# m- _# c

# a! w8 p! D. U# k5 s

: P2 D6 M. A' _& K. A; ?# Q+ L- Aend- o: x9 e) E/ q. a1 Z) C
6 y. P1 W6 k2 {0 r+ h
to update-credibility-ijl
& |* }  R8 c) @( E! ?) n" ]* Z& m/ y& \- ~6 n1 b
;;
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。
8 ^/ \1 K6 k) w" Jlet l 0
2 |, h. E8 n( @4 Pwhile[ l < people ]
. s8 n, X& ?% ^+ m$ p;;
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
" J7 T% q; \9 b4 D9 H4 x& B* ?* ?6 f[; r7 M+ u* j3 f- ]/ j3 A; U8 R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 C# y8 `2 w" }. T6 Z
if (trade-record-one-j-l-len > 3)# F+ h$ R& g* N; e$ Z5 D9 h/ H; }
[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-one5 a! I+ G# f# z: T% ]  Q
let i 3* O, o+ o* H& y' y  k8 L: n6 B
let sum-time 0* ^4 y: K& V) V8 x% |
while[i < trade-record-one-len]
7 }9 J( b8 X6 ~' O( }' C, o[
/ W& m1 z) P$ S! i3 Y& v+ Gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: u  b4 _$ I/ X6 q0 Y, E: v- lset i( K  H1 w% S1 Z; `' E/ S. _
( i + 1)
/ h. P% y9 D0 P; I2 J& D
]: R$ H0 O2 Z4 }6 Q! b0 e
let credibility-i-j-l 0
: m- D5 P, L" P; j5 U0 i+ Z;;i
评价(jjl的评价)# h8 i0 D) _" O  E
let j 3
" t! I2 l& O; l+ B1 clet k 42 L8 b. M0 a5 K" C% W  a* x  q
while[j < trade-record-one-len]5 \, F4 N- e! X' q, l
[
$ H" F2 W6 i# U7 p4 |/ X. Lwhile [((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9 |7 ~3 {1 Q$ Z: i* p6 {, x7 Z: p
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)
5 V& z# i! `5 Z0 \set j
/ B; t8 c" c4 D, k7 m, d% X/ [7 n( j + 1)
  m4 K5 j7 C8 l( G% I  J, W; _% o( T
]4 v; l' X* s/ f8 k
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 ))
+ \# ]; b& g! s, @0 V% u) T; v% R+ Y2 z5 J& \& _

0 U; u$ P8 E$ M/ w# p6 blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: F! F: q$ j' ^' m5 L* z$ p;;
及时更新il的评价质量的评价
' l& n8 d% g  E! Q: ^+ d  E; }set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- A8 n3 \; s0 ?- e2 P$ A
set l (l + 1)0 b2 X5 F8 ^3 F& v
]
6 I4 n# Y( E; V0 g* [end
. E2 W2 {, O/ f/ T- U. h) j: V9 z7 q! |. n
to update-credibility-list
9 }" i7 D# b5 S+ J$ wlet i 0/ U$ ?$ d" S5 F; ]) |% M3 G
while[i < people]3 K% \0 r( x% W4 D, @! t
[
( p3 r* e4 ]# `% L3 Xlet j 0) B! ~, [8 R  J
let note 0% k+ t( s5 \, p/ ~, Y, X1 v
let k 0# D& D8 t" F) Y( q+ M
;;
计作出过评价的邻居节点的数目
: N! g9 {  m; R5 u6 o( vwhile[j < people]' m5 j: j9 x, @) E8 ~  J3 n2 Y( w
[
- p: `5 t5 C  V( vif (item j( [credibility] of turtle (i + 1)) != -1)
4 O  i5 C7 x/ f8 |8 [9 Z( \- z8 @0 q;;
判断是否给本turtle的评价质量做出过评价的节点
+ Y5 S) r, q3 g+ C# k[set note (note + item j ([credibility]of turtle (i + 1)))
# N& x3 `/ O. r- v" R;;*(exp (-(people - 2)))/(people - 2))]

5 q( W. j1 D, j# U5 pset k (k + 1)# {: {2 P) a9 [
]
5 q& H0 ]# f% X& i( p; Tset j (j + 1)
) {9 u+ S3 \' b% r9 Q& H]
2 z6 V0 B& W/ a1 O" e! vset note (note *(exp (- (1 / k)))/ k)- G2 q+ l# j! n
set credibility-list (replace-item i credibility-list note). a' ?# D) L- n$ w  n, s) X9 L' a3 r
set i (i + 1)! X' f  I# E- V
]* y) U+ H/ [- q! q( r: F6 U
end6 a+ _# A/ X3 G$ {! S  V+ v

& D1 k2 H% c% J) Ato update-global-reputation-list- G9 N+ ^4 |% M
let j 0
5 P4 W5 m- B# C+ N( lwhile[j < people]
2 ^; y& f' v* Q[. J- Z$ h9 |+ y( f1 I
let new 0
0 p/ X8 B0 }/ s5 ~! _7 Q. {;;
暂存新的一个全局声誉
- q! O4 e- v; H1 x3 Zlet i 0
1 N2 H+ d& W: ylet sum-money 09 k" l( q* C' o' _" }+ `% A/ o
let credibility-money 02 C9 }" F' v6 g) _
while [i < people]4 l7 Y: N: G- h3 X
[3 n) C: k, r* Q7 E. Z* |
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 a, X/ a6 Z% g3 ]. \2 Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! I5 @+ X3 t6 K+ ~, V2 I
set i (i + 1)
( F, w: D. m/ a; Y0 a' t4 z' ^]
9 O; ~8 Y+ X$ ^. Plet k 0
8 O9 M) t9 u8 P0 `- e( Y) _9 B: I! Flet new1 0
! U6 B1 Q2 o( i0 S4 t+ ?! M  Ewhile [k < people]
1 A6 a' X' f* G$ G/ R0 |; ?+ Q" U[, r' ^% X$ L5 g2 [/ u4 _' O
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)
; a: I# c& m. t+ H/ D6 Kset k (k + 1)) ]! ?8 G5 w5 |0 U4 q( e* ~
]
. N& `7 ^9 p* gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 b8 R, p' _( A& R' X
set global-reputation-list (replace-item j global-reputation-list new)8 p0 B# u$ B& t
set j (j + 1)
* d# Q: N* C  T3 []( s6 }1 A9 g7 L5 L: t& o' E$ |7 j
end$ m" g  ^6 I+ {' X: \

2 o& O. n1 V& W# N' n( l) _/ O3 P% X/ p1 R( y+ _
) c& z( Q8 Z0 n- C4 U. a9 Y& V
to get-color& m6 n: e/ y% @7 J6 m9 S

4 X9 N* g3 ^. F+ z+ ?9 v  \: _set color blue
2 C: A3 M# n; e2 _1 Q! m3 k
end
4 Y  I7 I+ R3 Z# f/ J# Q( P3 I( ]
to poll-class8 ~8 j7 D: S+ M( z
end' E2 k3 h  ]5 z' B2 i1 L

# a  ~2 Y6 C2 g+ Y. A0 fto setup-plot1
; z* v) {* {. ^) F7 ^" m
. O/ V! B# b. C8 t5 V  {6 |set-current-plot "Trends-of-Local-reputation"

/ L1 w8 ?" W8 b& U. {
- z  a7 |& N1 o5 o7 V- r5 Kset-plot-x-range 0 xmax

* }1 l. A8 d1 u# Z' F! h0 S2 X& x+ m
set-plot-y-range 0.0 ymax
# y  E' D( n5 n5 m/ r8 p+ u  A3 T
end1 h% R% r6 n- ~6 _

3 E5 P8 X* ~+ x$ F* c- Wto setup-plot2
. p$ H+ j4 v; y0 M8 ?% J
" R) g* b4 X9 U% oset-current-plot "Trends-of-global-reputation"

5 a: _+ _; G4 s8 S
7 n, C  ^2 j: u0 [6 |) S! K7 _set-plot-x-range 0 xmax

" _, c( t' m; B+ C  r$ j: p" y* R" K; q# V6 }. [: I  l' w
set-plot-y-range 0.0 ymax
9 Q9 h/ v( t2 M. x# \- s9 ]
end
+ P2 H0 f% P6 y% w" v* k
6 R2 c4 h, T$ X2 Q$ v( D/ T' bto setup-plot32 N* m. B2 b/ u$ X4 R

; P1 ?0 s) R# u: y0 hset-current-plot "Trends-of-credibility"

0 v* f) g5 j6 X* w9 j* |' q) {
- q1 ^! @- n* e9 n# iset-plot-x-range 0 xmax
- K( x" s2 D, [5 o" g

' A" G: o. {3 F3 l1 x$ l0 Tset-plot-y-range 0.0 ymax

! `9 A; ?( V: p1 Yend  t- c# \: A# D& z) b9 k3 g

; N* G6 c+ E. i4 e1 Pto do-plots
) K8 b& u# I; T$ n$ Wset-current-plot "Trends-of-Local-reputation"7 O: O; o" S- A6 D+ E- m
set-current-plot-pen "Honest service"
. `' a( v' d+ X4 X/ \end' D/ O: X/ j" A7 Y3 g$ I
, V$ G' R3 c8 g9 E! h5 D4 g% R- J8 @
[ 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.
; J4 q9 d3 i$ `. S7 }  ?% [8 h
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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