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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:
) ~4 K# [* p4 }to do-business # s# m  v( E- L" N" P4 h& |
rt random 360+ U# [# ?+ Z/ N' s: X
fd 1
+ `& t7 }. M+ V1 A ifelse(other turtles-here != nobody)[
- z4 [6 f( f: N; y* ?3 F   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.
( e* n0 M- [0 v" O4 y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + \4 ~8 \1 d& Q* n8 e1 q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ X* g& }/ y5 U0 j7 U# D   set [trade-record-one-len] of self length [trade-record-one] of self7 U: q: q; Q2 u! q/ s
   set trade-record-current( list (timer) (random money-upper-limit))
2 y8 B' ]5 y1 L' w. m, l# l6 d3 z! }
问题的提示如下:; D7 e6 N! j4 r0 L7 b2 B4 v1 V# {

/ [2 u9 l" S: K9 M1 X( J& h0 c) {error while turtle 50 running OF in procedure DO-BUSINESS, N5 E3 @0 a0 v; O
  called by procedure GO
$ F, L- |: E6 Z" `) [OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ @+ g3 R6 U4 e
(halted running of go)) `' ?3 M9 P2 a+ h  y4 f
- l- Z: F4 p: K2 F
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~~
/ I" i! I4 g1 h7 V/ p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 {9 j' [" [9 K( l: f
globals[# n. |4 K0 S" b9 U( g
xmax: l/ n' D! y9 c$ Q( @2 c
ymax9 F9 I. \/ O# l
global-reputation-list/ X( E5 |" {  d( i9 z' ]
7 ]8 E- G. k2 i( M0 R" z. ]' E
;;
每一个turtle的全局声誉都存在此LIST
9 A) @9 q. Q9 q) T2 Pcredibility-list
( |, `- h) R: w9 o- p;;
每一个turtle的评价可信度3 B0 b+ _7 y) y5 M7 J" Z5 e" v
honest-service% s* A. G: M" V% O; R
unhonest-service0 y+ V" L. b$ d
oscillation
8 f2 o% X% f  drand-dynamic
3 L, B% [0 Y: X/ \: l: m- J' o0 A]* Y1 x1 T1 X) Q1 ^

1 u3 y. q! E4 _" C+ y& rturtles-own[
/ k' ^7 _; g( A/ T0 Qtrade-record-all
: f, L/ D' p- o' O  T;;a list of lists,
trade-record-one组成
5 @. b& P! t8 ]6 N7 B; x" t, C& ytrade-record-one
! r# I5 q' C3 `& 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' x/ A& j4 ]/ O
2 U" E# J& U/ T; j! l& i/ W
;;[
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]]
; L4 }  k3 _; Qtrade-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]
1 G, a' F; T6 r$ l' w7 X: L/ @  Scredibility-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
( M) X. E- `& O4 o7 M! I% u5 w, aneighbor-total7 T7 Q- R' u' [, T* ?) K
;;
记录该turtle的邻居节点的数目
5 `& G5 M' g/ g; a0 B: s9 xtrade-time
. Z8 P  X6 L" _3 n;;
当前发生交易的turtle的交易时间
( C2 k/ f' [7 F$ Cappraise-give
4 @( ], V5 ^! g7 r4 u) M;;
当前发生交易时给出的评价" c5 j+ O6 ?+ [& X% u
appraise-receive
. u3 A* b" ]& f1 k0 _2 m. H;;
当前发生交易时收到的评价
; W/ e( V$ U3 t& |appraise-time1 f. k2 A) w$ Z# v% w9 M
;;
当前发生交易时的评价时间) B# C- i, F" M8 O' T; J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ E$ H0 d- f. r: p* htrade-times-total. @4 {; p% M/ S) R, K
;;
与当前turtle的交易总次数5 a& b6 Z" v1 ?  n) |* \( l: O" v
trade-money-total
6 K, t( |5 I( J. \;;
与当前turtle的交易总金额  f2 \3 E5 [6 [- l; a, Z; Z
local-reputation  V7 b7 d" F0 }' C
global-reputation  S; j  k) b5 G3 q! r, V: l1 y& _
credibility) ]* ]. m* @' S
;;
评价可信度,每次交易后都需要更新
9 w3 ^9 P  v2 b2 S: Q$ mcredibility-all8 r3 W  Q/ k6 l3 J; t# ~
;;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
3 j7 |; \# W; L$ o( [& D
* d4 x" z+ m; C- P9 D7 F6 c, Y;;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
4 s% G. b0 t! [/ ncredibility-one
" N) Q) q' a1 Q* |% Q5 `! o;;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
( D6 C7 ^' {5 B7 H( z4 Yglobal-proportion
# Q( v  y" r5 l7 V. X  Ucustomer* m& B' Z$ D; ]% a' g/ S# H
customer-no
$ T" W3 f3 @  q8 wtrust-ok
0 H; w2 v( k% ~- H% C% A5 [6 @, s2 ^trade-record-one-len;;trade-record-one的长度
0 a8 \  f* `; F! V]% W6 i( x6 j  j9 S+ l. }

& a# y8 u8 ^* K* K;;setup procedure
% E! h. N. ~8 r5 O$ T/ f# ]8 n5 D# N; @% r( Z' ~; {5 |: ^( p
to setup, w2 ]& x% ^+ e7 K9 X

9 Z7 t5 S4 g, A* c: T/ p6 [ca

$ ]/ G. v' v8 g, E. y$ h3 c3 g/ W% N  j
initialize-settings
: U0 R- w1 b) u; E% g" @5 u
5 m" T0 ~0 {! \
crt people [setup-turtles]
7 u/ ]" n5 A  N& ~' a; C8 ^) `
- `/ b0 R0 ^5 s' `2 U$ o* r& l
reset-timer

, D- ]) r' |: j3 T, |8 i; J+ A, z2 i3 V9 ]6 G3 s- I2 g
poll-class
; U8 ?6 m1 Q$ J8 x% ^. c
- G4 e- V6 B0 H. ~% C
setup-plots
9 _) k+ e# @/ A8 y3 x6 o4 Q
2 m  v8 N$ Q8 p7 U. Q3 u! T4 H
do-plots
7 D2 H# Y! I  w7 V# R# A
end
8 @/ q( s$ @' c$ G1 O" k
9 t9 x3 M5 B1 g" P2 tto initialize-settings
3 p# }* {$ |  A
7 c5 i: K& v: c* sset global-reputation-list []
+ Z( \  m, p  H: f

" o# H$ G# ^9 [set credibility-list n-values people [0.5]

/ @$ g& b+ j: D0 h
4 E2 I- Y. c) ~3 Z+ q: Z( z# Mset honest-service 0
9 m- v5 {1 y0 e& m

( G  {& w3 u9 R3 W* Pset unhonest-service 0

, U  B7 V" P7 k! I; `; ~9 d
8 M7 A3 l3 g0 k$ |! \set oscillation 0
- q9 s+ N9 E( s: X  B& U. J  u

# `2 J  u/ I+ l2 ]/ Wset rand-dynamic 0
: |- f+ e# ?0 u
end2 \4 R8 Y) V; E7 N+ f7 R4 ]: u

7 N7 ^) p! |+ }to setup-turtles
3 X* Z1 t& R( }! p3 kset shape "person"
2 G* @6 r7 W7 O2 [8 ]8 T/ b! ssetxy random-xcor random-ycor+ Z/ {% X0 g1 o! L1 e0 n% j+ H
set trade-record-one []! X* ^) q) U+ h$ J
: q- g9 n3 K. a0 t) k
set trade-record-all n-values people [(list (? + 1) 0 0)] & X4 D; S( [: C: k. A8 G
, t+ d5 T+ {3 d7 @  z* Z1 i
set trade-record-current []6 E% {1 O8 n; G  a# g
set credibility-receive []
$ m; |: m* b5 q2 v* nset local-reputation 0.5
. {" A+ N/ j$ x) f. O7 k1 R: tset neighbor-total 0
" `5 b& A  `4 h# U% H. yset trade-times-total 05 i+ S# _6 e7 j2 ^6 l
set trade-money-total 0
5 V+ D7 Y7 ]3 k9 O+ @set customer nobody
2 E9 B1 @8 O2 C' e5 u! W) D3 Dset credibility-all n-values people [creat-credibility]
( r) ^/ l7 @; X; m1 k; \. [( D; A: \set credibility n-values people [-1]
( U; x; [! ~9 G& Y1 h* d" Q" Fget-color
) \& f7 [, q* f6 A. d% K8 d
! `! {* J! [' O/ {6 f
end5 U7 [* g7 G2 G" w1 q9 \; Q# R
) I; F' ?9 B6 ^8 A0 j7 z7 u
to-report creat-credibility
0 ?6 r) s3 P7 h/ f# Jreport n-values people [0.5]: I/ f. q( l" w4 \7 ^  O" {
end
; G' W- q; D2 j- v# ~+ w. w3 P' e* U$ n7 @, K, R  P/ L& a1 A
to setup-plots
$ l2 t" \- U  X; d. A5 h
1 P  m, `) [! c5 `set xmax 30

7 H, d0 j% Y5 q& G$ I/ X5 \
! `# I! y3 A7 |3 C; _5 ?% Y! Oset ymax 1.0

+ f# J* ]$ W$ \7 n1 k; q) K, ~, h% T# X0 l) b9 ~2 U
clear-all-plots

4 ^3 L5 }( p1 i
+ Z* Z( U2 v) l% v- K+ Vsetup-plot1
: N* m. y" p: ]  M" O, O1 C" z

% a: N- T3 M; @# a: W+ p+ Ysetup-plot2
+ |& j' F' S, h7 K  _. X+ x6 ~
  T) o4 y2 O! v3 }9 m! W
setup-plot3
8 k: }" L2 \$ A* E4 R8 W$ t
end
; H+ Q3 R# G5 o' e3 J9 ?7 k- h) O1 i8 w
;;run time procedures) x1 m5 A2 N% G4 g& A/ U
( k$ m5 |  y! n. K. i* S# Q9 ]2 u
to go
; B1 R, P: I8 e+ e" Q; j
! |; x( ]( ~: Rask turtles [do-business]
4 T- k. R- y2 O( p# L* N7 w
end
2 t7 t  W, B- t% P* Z- R
$ K/ f4 _2 m3 s; Pto do-business
$ G* Z9 E* g* z9 r( t5 Q: }. F/ \
" O" Q7 e8 a4 [& O  W8 A- s5 W

3 K# {2 n, S( n5 C, p) r, Srt random 360
5 z/ X9 Z& M& D& {
$ ?. V" [; f, B. ~$ ^  c
fd 1

% ~1 U( l( I/ i( n3 M/ }3 Y( d1 }6 w% V! y) l7 M
ifelse(other turtles-here != nobody)[

6 N0 Y. k, Y5 U% s4 O1 h/ f( ?% P% h( o- D# x
set customer one-of other turtles-here

- _; l. S/ U. s( y% T1 w
5 b4 B9 L% a# Q) n- P;; set [customer] of customer myself
( l0 v# ^, Q0 A. T
' v* k2 o$ |+ W: {) b9 l7 V% g
set [trade-record-one] of self item (([who] of customer) - 1)
/ Z4 k+ L+ F- d. x% e$ `# J: W& x; Y[trade-record-all]of self
3 ]; [( h* v5 d1 p) h& T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 [' i0 ~1 E% }0 @1 {( f4 w% i' _0 f  y$ Z
set [trade-record-one] of customer item (([who] of self) - 1)
9 i2 I1 v# q1 b[trade-record-all]of customer
+ y! \, Y( ?) R3 |1 j8 i4 X$ j

# x- ]# T) v' y5 Jset [trade-record-one-len] of self length [trade-record-one] of self

2 Z6 }) z. F/ ~7 |, i' T" d
) u- r- ?6 h$ vset trade-record-current( list (timer) (random money-upper-limit))

. Y. u' j0 ^/ G/ |2 n8 E$ L5 h" o3 `. ~( F6 A2 i" v
ask self [do-trust]
; ?4 N% y7 O, B) Z* ~2 v$ H% k5 R;;
先求ij的信任度  R) A/ R: T# W
: @6 l5 E% r4 m7 Q, B3 e# y
if ([trust-ok] of self). x: M8 X, q! q. r- A* U
;;
根据ij的信任度来决定是否与j进行交易[9 H/ T% j9 w- ^7 k" J  ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, B7 }2 n* K& r/ J: E+ U7 y) U- ~# o2 w) k
[
( G' m3 V2 y8 d+ I
2 U* |6 a5 {  @1 B
do-trade

4 s* J! B- N) v( c2 J, g
; ?  w+ `* `& x* B) Vupdate-credibility-ijl

/ j) E" ^- W4 E! Q
7 K; [0 j% w1 K0 r8 |update-credibility-list
5 v$ G4 J0 k' N! k* }

( |" E- C6 \. }9 W  ~
- D# K4 d) a3 G& fupdate-global-reputation-list

8 h$ R- C3 w- K  P4 B/ p% M; E& O4 `2 F
poll-class

/ D( R  }9 M2 l, x9 n! r3 p- W. z3 l! n
get-color

7 ~( P9 {) O+ ]9 p7 Y2 C5 ^0 a
' e9 O3 c& a& U$ h0 e1 ^& j]]
8 }7 ?/ ^, T% z( k' I
. [$ X! M3 m- o) |* P& G;;
如果所得的信任度满足条件,则进行交易
8 G% K- L7 \, @/ F0 p  A
. S" w/ K; H9 W% H6 ?* T0 P[

1 z9 F: p$ |+ b/ ~) Q4 E) i3 o2 v. h
rt random 360
5 X* s  I" L/ L1 q6 q

2 d; Y: `+ w5 ?0 jfd 1

! b; k5 H" o7 S- n4 b, s
$ h6 R4 m5 R! d]

5 h9 D8 t+ P- @* Q0 m% M2 O( g; O) z! d- ^  S& z
end
- ?; k* x# N: [6 `0 Y3 I

' q& t5 J! S3 F, H* I, B5 rto do-trust + |) {: n2 o! h# l$ X
set trust-ok False0 i! B" B% M- ?: ?- j

/ x& k: s" e  N+ b4 j

& X! E/ @  D3 `1 alet max-trade-times 0
4 D  ~- x/ e# l  |- o- S' F( Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: [7 o0 S# f" }* @- O( Q$ r  E; ~
let max-trade-money 0
) M; v5 I1 r4 }% f$ P; [0 Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  y8 g5 x' R8 p' \9 Z, h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& K6 P% }& K- d0 D: }1 G; z' H9 i; K+ C
' {3 p* ?! i/ B3 j' l

0 C1 r) |( T8 S. m$ e" Dget-global-proportion
4 p  h1 ]- t: X9 X1 zlet trust-value
3 q: r' M$ V9 Q% ]: I# Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 f8 o& u6 Q2 R) P! P- `- aif(trust-value > trade-trust-value)
$ X3 h/ t/ ?. _* m: Y& O+ O[set trust-ok true]# q' ]! d: D- R: D  ?
end2 B. k# h+ P) I' ~' V( }
* `" Y- v- v; i- h
to get-global-proportion
: D& R7 K) V0 d7 r& S% q" x1 _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" {2 o2 @% e2 M[set global-proportion 0]( O% @+ C) U; F8 G0 Y2 N) s
[let i 0/ D' Y) O; d5 o. T6 @' Q2 N% c
let sum-money 07 u# f3 G3 Y' M0 k9 w4 ?2 c
while[ i < people]9 |0 z, n. }' I  f2 j& z
[8 a2 Z- S# O5 T, F. \
if( length (item i3 P1 B' U8 u$ ^$ a; y! V% ]& `0 d
[trade-record-all] of customer) > 3 )
2 C% H5 K0 i& p7 t, r) l
[" Z' O1 |2 x4 v5 F" j/ y9 p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# B# v# U# @! ^& k8 {
]
* `4 {9 p( Q# e& `5 W4 d5 |]# z# x; H3 a# Y; h1 y# E0 c
let j 0) }. U# q( q8 u
let note 0/ ]: g2 X0 ~1 W8 s- E
while[ j < people]
, _- y  c. y8 M6 T: Z7 @, _[! T0 M7 R4 T; {3 ?) l! U3 J
if( length (item i: @" X- L) L5 |) {* p
[trade-record-all] of customer) > 3 )

6 z- @8 h: R# @6 ]6 p[/ X0 q1 r+ t  Z0 L; y0 C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ Z& b9 ~- _( g1 S, v9 z/ J( J
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], K  x: B- n, H  @2 V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! @7 {5 y; j5 C2 i]# `0 {7 J& X: D
], J9 C5 P& ?  a( z
set global-proportion note
3 {' ~# e& z9 n! M( `3 ^]3 c! G9 k! R7 P) f
end+ {1 n9 E; o% `$ o. g2 F

6 ~( s+ F) @3 a) R. Sto do-trade
: e' w' g" ?+ S" _;;
这个过程实际上是给双方作出评价的过程
- P0 g- l4 P! }9 {4 w4 ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 H* K* `0 s; b, V9 z: C) J) y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 N( p, c/ s4 f+ iset trade-record-current lput(timer) trade-record-current0 |" U1 @) a- |  @' q4 r" u
;;
评价时间
6 b% [# X. i* F3 task myself [
0 o. w9 @0 K) A! K3 mupdate-local-reputation" Q4 ]2 K+ U% `2 u# L' P9 f
set trade-record-current lput([local-reputation] of myself) trade-record-current9 \. \8 x, ~: U: A7 X% {
]
1 I% b6 G  q  h! w) V, jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ i6 f% M, }( q
;;
将此次交易的记录加入到trade-record-one) v  F3 F7 l' T) e. k0 T8 }& t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 q. w) ~' V3 ~) A
let note (item 2 trade-record-current )
+ U5 G4 @8 n4 {7 k' f, _set trade-record-current! @% t3 u) m9 L
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 F: V- O  M; j& F
set trade-record-current) x+ J- M$ R- t5 B5 C
(replace-item 3 trade-record-current note)
! F, t: R" R  }8 y- M+ J! `2 {1 R+ L' e8 |
; U4 ^8 r) y) p- e; X2 B, Y4 X
ask customer [$ {  x3 b  ?/ r" k* [0 N
update-local-reputation3 t* K2 I6 z0 I' l/ X' E' g4 `
set trade-record-current$ U& V' _8 u- y% r+ G3 [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 y0 I; ]; ?8 k4 D/ J]
/ P  |( k7 t0 }+ M% N* \/ I0 [
9 i$ E' R( H$ n8 U3 T

1 h; ?1 P& B1 p: a  v/ _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 \% h) F# Z9 P  Q8 B+ M

8 Q) U7 x6 @/ Y" F3 eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& ^% j  U- x$ ?1 d  m;;
将此次交易的记录加入到customertrade-record-all
$ G/ m/ H& H0 _" `% }end' w% g) O- v' k' M& f

4 T8 Z3 L$ K0 f" v9 Z4 Mto update-local-reputation  z# R9 |  Z$ U, b7 _
set [trade-record-one-len] of myself length [trade-record-one] of myself# \+ e- Q- D7 p$ y. q2 @* `
- g' Q3 U# e: Y+ I
5 ?+ I& @* p! j
;;if [trade-record-one-len] of myself > 3
! J  _+ t6 q1 V; {
update-neighbor-total
' x: z; ~+ G$ C+ x& |1 u;;
更新邻居节点的数目,在此进行
# O" a9 f8 c' V' q  rlet i 3
! B1 p0 ]: n2 f. {: K0 n  h- Flet sum-time 0
( m0 x3 V- u) }9 e6 c3 Nwhile[i < [trade-record-one-len] of myself]
8 a! d4 t- I$ {% n) Z3 M[1 _, s0 v; L& R# ?( [
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  R# l  c3 s7 z. v3 S# mset i& O0 N* z% s8 v9 }* G7 u0 Z
( i + 1)

, W2 X: p; ~* v, V( c3 ~0 o8 T0 X- A]1 ^+ Z4 e4 r% s  [5 K  M
let j 35 N9 ~& D3 z9 s: i) a* ^* x
let sum-money 0& l2 ~% ^! O) d
while[j < [trade-record-one-len] of myself]$ V5 }% Q( A4 @5 E
[
* ~+ c% O* 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)
& ~4 T/ c2 C; I1 w! oset j
! k+ r5 o1 W8 {# @% o( j + 1)
0 R4 L$ x9 k: H1 o* H# F; O9 ~: u
]
& M- s3 H3 Z! b  k* ^" S! Vlet k 3
- l+ {$ F7 s# {8 L0 rlet power 08 q# W: j, q4 P" ^7 b# e
let local 07 @, L- Z9 U) X4 G, g# ^
while [k <[trade-record-one-len] of myself]/ @0 A" }- P) ]% i( ~3 |
[) c* X: f0 p/ k" ]) X
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# ~0 d* @; a" h! s" W7 j  Uset k (k + 1)- f2 L' y: N* G3 R
]
8 J0 Y# m2 A" O( _- yset [local-reputation] of myself (local)
+ M8 N7 [$ H$ b" Iend  i7 k! i, G  ], [  {- y9 W

9 i- A2 C/ V  O' }to update-neighbor-total/ z1 M% `+ r0 m1 e1 }: ?: z

: O! T7 }! K5 n* o' y, H" L* Zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% ?8 y; Z4 [+ H  j# P/ W8 \4 x( F, I9 [, V) k3 d

/ ^0 ~& Z2 f+ U/ ?0 R- h) W* Wend
" i) K) \: K5 O9 V9 @) K5 x: y: S- `, f
to update-credibility-ijl + P6 o2 P( ~  i+ k4 _5 a5 w

1 O& k) C" @- U( u+ B0 E8 J; |; T;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
5 t% E: ~- c6 u5 u( _9 ?8 }0 R& Qlet l 00 J; p( |- @( ~/ `$ w/ a# D
while[ l < people ]
9 W' M8 L& e: g7 Y) a4 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
% [2 A8 b( s0 a, f, X[
! ~# o$ z1 w9 R# y/ C+ Z4 H2 blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 ?7 W! L9 O  U
if (trade-record-one-j-l-len > 3)
: ^8 x4 Z8 y% V6 @[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+ C4 [! P& E3 A: K% r+ L% {
let i 3
) h0 h& K( W/ ?# S* ?8 g/ W: T) Klet sum-time 0" H2 l% C) T. {7 u; e9 e
while[i < trade-record-one-len]
& R& \1 J1 ~5 `; h9 @% P1 `3 v[
, y4 N4 f$ T  vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 P( Z0 Q( z% ~0 G0 Nset i
8 v4 ^) q$ H8 u) F7 w  D' v: f- L, P( i + 1)

( Z, w$ ~+ o+ }& x/ c; q  S0 l]% ]5 q0 g7 j9 z
let credibility-i-j-l 0
3 ^1 T) L+ P; U( h7 J;;i
评价(jjl的评价)* e$ T( s6 h4 `- @4 g
let j 3
& h% H" B' ^3 _. Ylet k 4* y/ v+ O; W5 K5 D3 N# J: s
while[j < trade-record-one-len]
% l  P( z) K7 G* C; f3 O  Z[
6 s9 ?9 n+ B1 x7 @& Y% I7 dwhile [((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
" Q; E2 L) p# V( d+ r7 f+ [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)+ V0 y5 z: d5 X# g( b/ ~
set j
6 z  b$ G9 Q" a( j + 1)
8 B6 C5 e) V& A: w( E$ I
]
: d6 E5 o' a2 }( d2 S8 b( f- Iset [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 ))2 R  M- ?# g1 M1 M

; c4 A/ c( ]2 V

6 O6 R* t, X6 x1 D% a- o8 c/ i; Z- Ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  f2 m) M' h8 N6 H0 ]. L
;;
及时更新il的评价质量的评价+ ?2 k0 f/ q4 {! O7 x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ Q! Y# |$ b) T" Wset l (l + 1)% X; A% f) i4 t" W5 p; K
]1 f" n- z" r) E2 T
end  Y: D, ?  f8 q$ k8 m( T

; o7 B3 t" X- e+ z2 k) K7 Hto update-credibility-list+ L: O, x" t( W
let i 0
$ h& e" o- d2 c$ J; Awhile[i < people]
  W4 K6 `) o- ]+ k9 W6 F% X6 U[
* K6 l) V" @& l3 l4 r  zlet j 0
; K, L9 ~( i7 ?$ ?$ @let note 0
2 d) a# G0 g6 H  s5 x5 g/ W! Clet k 0
4 d2 ~  g/ g5 Y) }" Q/ ^' W;;
计作出过评价的邻居节点的数目4 S, j# F5 p( ]- f& P! g: F* u  R
while[j < people]
+ E2 l/ j, f( h[
, n2 k# D: T1 xif (item j( [credibility] of turtle (i + 1)) != -1)
) f! n# A* O% T, D  _) H; _;;
判断是否给本turtle的评价质量做出过评价的节点
: d0 D( ~1 M5 D[set note (note + item j ([credibility]of turtle (i + 1)))
9 z$ K, t& U6 L7 _1 g, j1 s;;*(exp (-(people - 2)))/(people - 2))]

0 j- b- _% \" E! g/ Tset k (k + 1)
0 U0 }& K- V) U2 h* f]; S8 P1 i' N1 Z9 [7 H6 S; v* J
set j (j + 1)
8 z& P9 f$ z+ X% B]
- o: d! t- W/ ?/ Kset note (note *(exp (- (1 / k)))/ k)
% L* ~, V8 _. Vset credibility-list (replace-item i credibility-list note)
* H" U8 n; _. N0 nset i (i + 1)
' g7 \  E+ C. q- _- d]
" w: t3 B% l$ `end2 l2 ~. k3 _$ ~- F
+ c7 Z4 n- A/ w2 m
to update-global-reputation-list7 \) W* x( e  S8 W/ ]- I4 v* I
let j 03 l5 c3 [4 p, I7 s6 z& G
while[j < people]% Q/ C6 t8 x) ^% R8 c8 F  L
[* P; p* Z8 ?! K9 l% L: d
let new 02 w- C! o; M* i  o1 N0 D' i
;;
暂存新的一个全局声誉
% u2 s3 }$ E8 }  e3 |+ klet i 0
5 o9 p6 g3 S7 i, N9 Alet sum-money 0! a! q! l& i1 _" i9 d* P" N: q
let credibility-money 00 S$ Y: j( G& n
while [i < people]
7 d9 `$ g" i* M% H4 {* P[
, M- D6 c8 P/ L% K, eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) ~' o: @( }+ r, r* zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 F8 H% o  f  \9 k. U3 J. r
set i (i + 1)) b4 l, ?* E$ k" Y
]$ M5 _2 N% F+ ~- X
let k 0
" @- J5 @3 t& g1 B9 p( W1 A2 }let new1 0" m' k" r8 d4 I: z  A" t
while [k < people]' z+ R/ P6 [4 {
[
) `) k2 l  M4 F6 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)
6 {/ P8 {7 c9 u4 ]set k (k + 1)) D% x" s5 M! }! k/ u" g3 m" {
]
! C4 w6 f$ I5 B8 h. xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, D" H( \* X! N+ x! G- h! }set global-reputation-list (replace-item j global-reputation-list new)' |) Y, W; x2 e) U
set j (j + 1)
. i/ a7 j+ H3 _. i2 M2 e]
9 t, j- m8 }) ^$ m% S$ b7 N2 p" r) U, tend% Q& {3 {9 S' I/ U' U
2 i2 H' [( y& v/ A- Y. I
* n' S' b! z) T& I# Z! Y
$ n5 a+ _' h. K
to get-color3 q5 P) ?& D7 Y  O6 C
" G4 x; g8 }6 J( {5 c, z
set color blue
( @$ p* [- t# w
end
; I6 K& H  T% Q: i# h! X
0 d1 M5 C( @! F; v0 D, T, w" z8 Bto poll-class
5 P2 e1 j0 Y/ }  J4 Rend* W# Z9 g" X; H5 q- s: h# Y

( i1 b1 `; L6 c( V) f% V: E) V* ?to setup-plot1
) j; M/ _) X. O& `, T- Q8 V# Q# ~! t8 v
set-current-plot "Trends-of-Local-reputation"
) \; }/ F* m5 N, w% S2 q) e9 J
7 M& B5 l9 a% |4 ^) r6 N8 ^
set-plot-x-range 0 xmax
) i1 g+ o& {$ P& @, `

, i# I# q3 n; j0 oset-plot-y-range 0.0 ymax

0 T  f6 \6 }- p! _$ e- ?end
4 B0 T( }0 t1 W8 w  |- K! n% Q' P3 @
to setup-plot2
6 @& Q2 ?/ L& T1 N8 a; W* W" d% R  [/ N9 T1 B
set-current-plot "Trends-of-global-reputation"
& E3 R  ]; \$ U9 x# @' q( G5 l

( [  W3 B, K; g- U6 Y1 Y; Oset-plot-x-range 0 xmax
* T$ f: G) N5 }- Y+ n' J
! `; L# y7 A' _% P( i
set-plot-y-range 0.0 ymax

. d" \6 p9 a9 k! d* ~end
! L1 f( n3 Z7 j6 P2 A7 J7 v8 V+ u+ D& |
to setup-plot3
0 ^! G. |% O+ k9 \% ?
/ X  U& \6 ~# Kset-current-plot "Trends-of-credibility"
# U$ D0 r1 o) q- X- K2 o- i/ L

# U: f5 T! i4 b7 @( gset-plot-x-range 0 xmax

" h' P9 h* k; i8 S  ^2 W$ s# g. E, O  t6 p* z- V2 V1 _' B
set-plot-y-range 0.0 ymax
9 N. D+ }  t% o1 Q/ V& Y4 W3 A$ q3 n
end
' T: ?2 R% N1 o0 l+ H: [
+ T# Q3 i8 \1 p4 Y8 {1 {to do-plots2 k+ s7 |* ~. {. d6 f1 X  L( t
set-current-plot "Trends-of-Local-reputation". f: ^! X% l7 i1 l
set-current-plot-pen "Honest service"8 J  L+ c& Q. p3 m+ c
end
3 h: o# O$ R3 u: a$ _9 H. ~8 P- U9 @5 S2 W5 q
[ 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.; l9 d6 k# \- V, s, H4 u

! X% g' m( y7 x7 [$ Y8 }1 H" r& ~' y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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