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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:2 _3 e' X$ Z& a7 V7 Q% U
to do-business
; X* A6 e, g/ a  ~ rt random 3601 J' s4 S: G  y7 x9 M
fd 1: |9 V, k2 \2 T! l: q
ifelse(other turtles-here != nobody)[7 Y; h6 }  \4 V5 ~/ A
   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.
$ s: \' z$ S" T7 e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 P8 u: Y( m% ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 `6 n8 B4 ^6 M! K   set [trade-record-one-len] of self length [trade-record-one] of self. A) i5 \1 A1 [( G0 k
   set trade-record-current( list (timer) (random money-upper-limit))
3 U& b- t9 j/ `. e4 V0 n( x# ]: q& M7 x! r$ c" e
问题的提示如下:
. O) \* [% [" j$ b# M+ z# A  v6 r8 c
error while turtle 50 running OF in procedure DO-BUSINESS8 c# c- S: K6 c% e
  called by procedure GO8 F+ q6 O5 D4 K1 m$ M" Q( z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 ]; Z% ~0 v/ L  Q# R& r
(halted running of go)
: J! G3 q1 `: J, ^9 k+ G
( \, l2 y$ ?1 X0 q) e  y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~~
  G3 o' w9 o, O# E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
& X5 p" \& x( O4 G8 ], Mglobals[
# ]& i7 H% ^% e: I5 L/ g  fxmax4 C# d5 I2 M7 A2 c4 ~
ymax
' T! s# \0 W( oglobal-reputation-list
6 L6 H- ~. C5 t; t
) |$ ?0 A: Y+ G) f& C1 U;;
每一个turtle的全局声誉都存在此LIST) z4 N5 F9 b- {8 U( G
credibility-list
. h- e" B* l- N+ g& ]* e# c;;
每一个turtle的评价可信度
% l3 \; f1 S, Bhonest-service
5 \6 n5 C& u/ o4 j. I6 g! dunhonest-service" y9 E( i' R; Q5 E
oscillation
8 _  V1 j$ d! i/ [) I/ lrand-dynamic
. n) a% a5 \" y/ m( G7 {/ G]
- m, w+ b9 [" e5 |9 P4 K9 T: a# e3 ?
turtles-own[" }  Q2 k* P4 d1 }8 q; J/ e7 X/ x
trade-record-all
) `& g6 u, c& c4 ~;;a list of lists,
trade-record-one组成3 @2 I8 B" u. }
trade-record-one
9 g8 v# n0 ]0 l. k$ f1 s/ o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 R4 }; |9 k5 o) G" D8 L

: j4 M1 z( r: 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]]5 ]8 ^" s3 n: i- X' \- x5 \
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]0 u+ P1 g% s6 m  x0 K
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
+ H8 v# g: y$ L# Sneighbor-total
# H3 r! s3 F( }. {6 e* ?) [;;
记录该turtle的邻居节点的数目% F  r' \6 L4 {2 u9 a3 T, m
trade-time
. G$ R1 N- Z" \) L% K+ J3 D- g;;
当前发生交易的turtle的交易时间
  v& F: l5 Z( ^appraise-give
( n5 S& i; V$ b, I" M; R4 Y;;
当前发生交易时给出的评价
( C3 {" l9 @7 w6 N7 P5 J# m3 Jappraise-receive
$ p) S) M  P4 d! O+ m! d7 b;;
当前发生交易时收到的评价
  m# M! ?" N: z" \3 F  qappraise-time0 P; \7 k* K& c
;;
当前发生交易时的评价时间
9 p$ w9 W6 W9 ]$ g) `7 Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 |7 q3 b: _* \. x4 Ptrade-times-total. a0 W" D# L1 ?) B
;;
与当前turtle的交易总次数# w. ?$ @: t( d. O# p* v* m  x! Q, G
trade-money-total
2 \; P5 ?( X1 d3 J;;
与当前turtle的交易总金额  {4 r" G4 b/ C: `; x: {; I; h) r
local-reputation: |9 e" ^0 p' Q, Z
global-reputation2 W: e: K, V5 b# Z/ b8 P2 H
credibility$ y! J% A3 h% F3 j- c/ Q  _& S1 v
;;
评价可信度,每次交易后都需要更新
1 `2 T; q$ H5 |- |# v2 Lcredibility-all5 q7 M2 D( U) |; b' J
;;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& z8 c" S7 V1 @( `

2 D% ~- Q* {) U3 I% W;;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
$ j+ D6 N2 g, V" ^9 `credibility-one4 G3 X" @, b* D5 d" u+ @
;;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/ a& R: q9 o3 o5 R# F" X- W- ~' j
global-proportion2 G% G. w" p5 {
customer
3 a9 _! [. Q% o0 ecustomer-no5 B* F! S  `; C4 ?! g5 i, d
trust-ok. n7 I3 L- S0 p, k6 s4 p% J/ J
trade-record-one-len;;trade-record-one的长度
) j) Y! O$ \6 u# b* L]
! S4 }, Y3 p. l" S
7 z  }' T+ w) p, v# t;;setup procedure
4 ]: z7 r* p  U% s/ o' l% T( S, g: j; h( Z/ f
to setup% c! D8 O* {- H* {- z! G9 X/ @
% T* G, b+ u; _% G9 N1 {- ~
ca

/ S# C' `' V+ Q8 r' [+ F/ Z/ J+ x" G
initialize-settings
! e8 J& Y' v5 Z

0 l4 ~5 T4 J# O" Y  M/ Mcrt people [setup-turtles]
- {- c9 o: k4 z$ S" h# k, v
/ o+ K, x6 Z9 [/ _& a
reset-timer
; D& w6 g8 ^& J  U* G! i0 z: X) v
2 P# z& m4 e, q  W5 f
poll-class

4 h' @' ~  x1 f" e0 y+ ^! e2 h* t! v2 _% k1 t% z" f
setup-plots

2 x. V, o% N: b; }
9 c& d4 c' a( D5 K8 j" B0 pdo-plots

3 {7 I) @% Z# r1 L% l7 h; hend2 r7 n0 p/ j" M' ^! O8 n& K
# r$ g# b6 `( K" K4 T
to initialize-settings
( M# a) {8 ?; i: q3 e3 K
" w% Q4 u, B: t/ u( y7 |9 O; i( Uset global-reputation-list []
/ Y1 n4 l! p, T6 m- ^4 ]; ]  B

# N9 D" J& K* D$ j; a: Iset credibility-list n-values people [0.5]
) _; [* J) g6 T+ _7 c

2 C, ~3 o% Y& b% L2 j; H# Mset honest-service 0
+ b6 Y" O: s9 v' d+ q  y8 W- `; r

! f8 l  [& a- q6 e! k: B* Qset unhonest-service 0
' {; L) @/ H' @1 k1 g7 m
+ c. [7 n& N' e, Z+ o
set oscillation 0

/ N, U0 T; i; m
2 N$ b. a7 l/ \# V  @. K" hset rand-dynamic 0
, v, A  m5 r& Y  \
end3 F5 m% o. E- Z; s+ _+ G- Z
3 d8 S3 M0 l5 f) u7 ?
to setup-turtles
+ n9 L: k3 Y& Z" _5 J. ~set shape "person"
( g' T0 }0 w) G4 X; `' Bsetxy random-xcor random-ycor
  I5 @; b7 B" Tset trade-record-one []/ f1 b( {( x/ z* ~  P6 @. l
# ], t+ e) Q/ U# B% B) s3 c3 k5 M
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 O. `' _: D' ^2 Y4 u$ ~) H
4 ~7 Q9 Y# j  v& e: ?2 W
set trade-record-current []
' z; U' Y2 U7 p: R+ hset credibility-receive []5 p& T: q" B% l, S1 Q* W
set local-reputation 0.5
# t$ h# y/ i$ [6 K9 v- Zset neighbor-total 0
" V2 M4 i2 E! d; F" q0 V* s3 [set trade-times-total 0
& {& k4 N& G% x' r- Iset trade-money-total 03 @- g, {, s' M9 b
set customer nobody0 e1 ]* H/ ?( t! p
set credibility-all n-values people [creat-credibility]
9 m+ |* P2 H) ~2 M0 uset credibility n-values people [-1]
$ ^6 }; p5 O. g9 s: fget-color
4 }1 K4 s) @4 {; A- ]3 R; Y( c

0 T7 M8 ?! ~$ }end- B1 |* p: b- g- q' h/ ~
% `, [: ^3 g1 ?' D2 U* a  L- r
to-report creat-credibility
# o+ a0 ^& T& Y7 V$ `report n-values people [0.5]1 V9 d& E  t! C( {! H
end3 a9 E5 q! A- |2 g: u4 E0 R
- n' y; ?: i5 s3 ]2 \5 x4 Q
to setup-plots
1 l) q  z5 L8 B- |+ g! b0 ~. J- L8 ^  v
set xmax 30
% A  j) J! C. X6 E+ {
8 d  {" E; A2 G: R
set ymax 1.0

' _! [& t  ?0 `2 g
) L4 F- v* s* i* A4 R) eclear-all-plots

+ Z3 A& Q  J6 X$ k
( b$ f" c) V9 \2 W7 Hsetup-plot1
4 Q8 w, Q8 Y# ~2 q4 U/ P0 C# n
/ x3 j+ c2 i% [8 X
setup-plot2

) z5 ~- f" k( A1 ?' d. ]) Y
, C6 w3 F/ p- N$ d; S, X6 ]6 N& Tsetup-plot3
6 K2 ~$ d% J: z) g( @2 Y. H
end1 c5 w/ H9 m% C1 f

# R& G1 q+ t4 B1 R/ q;;run time procedures
8 P5 x2 t9 I5 Q  s" H( @* T9 ?8 w, s* z1 x' X
to go
8 C: U( P  e  }# e8 c1 J( P. Y* {3 E# L9 c0 I: V; b6 k
ask turtles [do-business]
$ j! }5 `- }3 ?! @/ _& U  h# M3 n
end! i7 f* P& Y% Z# L& V% I
$ u8 H5 q! l7 T# n7 T' S- c4 c
to do-business
+ C8 [2 E: L* C' o4 {, [
# I6 q' Q8 m$ o

5 B8 x& w0 Z$ G4 A2 C9 E! |rt random 360
0 m& ?" W$ ]' I& a5 A3 e9 |
4 d9 d! i+ e& \6 p
fd 1

9 J9 K& V. l4 P0 W! C  G) Q; @9 A  [' i6 O
ifelse(other turtles-here != nobody)[
: m' s: e0 z7 Z- v; Y
# R0 H# Q2 b9 A1 T2 d& g) e: ~' i, M
set customer one-of other turtles-here
# r3 O% ~0 X# ~

9 q6 N4 U- t3 |;; set [customer] of customer myself

* Z4 N; z. n9 R2 f# E, Y  C4 ^9 f3 y9 a/ g# @- {
set [trade-record-one] of self item (([who] of customer) - 1)8 @$ }0 p. M* p. s7 i5 v
[trade-record-all]of self# f4 `. Q7 h  Y8 E* U. o5 x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 F% x( b6 _+ O$ Z2 n; H9 h7 D+ s! n$ ?/ I' _
set [trade-record-one] of customer item (([who] of self) - 1)
1 t" S& G- D! G- ~[trade-record-all]of customer
' m4 z4 I* p7 ~+ ?& O4 n

- I5 @6 }& n! o4 k, bset [trade-record-one-len] of self length [trade-record-one] of self
. ]0 H/ I5 M* y, V' G' k+ T3 R

% e4 Z: }) ^, X% S6 ]/ kset trade-record-current( list (timer) (random money-upper-limit))

( ~  ^, y) }- ^6 k! X2 T9 m$ Y  b6 S! C( U
ask self [do-trust]" ]& W5 Q: w, S8 p/ o9 ?8 w5 U+ b
;;
先求ij的信任度6 z  _" g1 _) p! j6 |  r
/ B" T8 {+ H9 f+ ~+ w! ^0 |3 d
if ([trust-ok] of self)
2 ^) h3 ~4 M: ?;;
根据ij的信任度来决定是否与j进行交易[
, n, a+ g7 }% G% G$ v+ y, Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 Z- f, y4 C. w+ L* H; B6 d' ?9 U4 U$ z( J# h: j& M' X
[
5 [4 @7 Z& N) ^  H( [
( j1 B9 b* @& l3 V* Q" O: `
do-trade
% r9 B" G& V, |6 {2 C5 M% f/ U- R
5 T  P# j9 B6 M- H( j) X% z, e8 B
update-credibility-ijl
& ~6 q  ^- l( C0 G$ _
$ f# ^8 u* W  @; m
update-credibility-list/ R( ~  Q& ?3 @( Y, z0 {$ F
& b) x- b# M: t5 b

  F7 o1 ]" i3 J7 I1 x2 n% \update-global-reputation-list

% w" ^! F$ y6 h: B3 |& _( Z1 x  L, R  c. S
poll-class
% f+ P1 }$ ]$ @% C
5 ^) I& [; G( R+ C
get-color
5 e) K& L& T8 x& O# S
, e8 \2 R; h+ J5 ]8 H) a
]], S, B  z$ \. s7 U+ z1 b) E  H! m
8 D8 \/ E1 \8 y$ h
;;
如果所得的信任度满足条件,则进行交易/ C5 r, Q0 C) Y
3 r* B% x- }2 C) ?9 n
[

4 \& L* l3 ~/ x, n1 p8 q9 U
% e" S! @' \- {/ W  d& W! yrt random 360
- z5 r4 X. L! G' W
$ w# H$ {' A8 I
fd 1

5 i9 S  N- Z) ]
- g: R- N0 W- T: U]

4 N1 Q! C% `  Q: v  |  w/ p
' d( e- Q0 v* o" W  h9 M' Wend

. Z  C  |1 H5 |" r+ a4 [0 {  X4 {/ S) \0 h! z; q
to do-trust
% d! t) l; I+ f& m3 x) sset trust-ok False1 k; F4 _1 `% y. S2 [; z0 P

7 d. f( [+ X: A2 W5 l
+ e7 j. a& h0 [* r% o; Z
let max-trade-times 0
5 C5 c! r& i# |' C1 Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: @$ {; C( Z8 Y" g" o- o
let max-trade-money 04 L9 m# e) V. }+ D4 i+ b( t0 i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 t' Z8 {0 g9 Y, p
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& Y9 h' {  b. j6 K' p3 W  W: N

1 N% T/ R2 g5 L$ L/ L) N: l
. a7 ^, k! E; t, P, a" s. S
get-global-proportion
( V0 V! U% l0 U; P: `" C* Vlet trust-value" g: p2 o+ w) Y: T. D
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)

/ B9 b* k, r; F9 O2 W  h% b$ ?9 Pif(trust-value > trade-trust-value)9 g2 ?( j7 j& T
[set trust-ok true]5 c  O" {& L3 g6 f  }$ |) g
end
& Z3 y# V2 z7 q9 @" X: w
# |$ f1 @  f5 \  k2 w+ xto get-global-proportion2 \: u* b! L' j3 l- g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ T" Z: i/ ~& }' g" k$ _2 `4 y6 _  [
[set global-proportion 0]2 {8 _3 \1 X6 F, K- W
[let i 0* ?! O5 U( t3 S! `
let sum-money 0
6 {5 l% V7 l$ Y4 vwhile[ i < people]
! R5 J  M/ u3 U% e! A[. B0 p) g7 A) f$ C) g0 W9 ^7 K) Y$ U
if( length (item i
( y; L* v9 I0 ?. @# A[trade-record-all] of customer) > 3 )
1 N$ W( t& j; _* B( w
[
9 z, R! ]. V- ?set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  R- j7 f* r- Q$ m7 Q* `( p7 S9 P- N5 @
]% m+ _+ p5 o7 E. h- I
]" A; c' y% G. {% E, m
let j 0
) q5 }7 o: U$ f: z0 [. ^- tlet note 0- H# v2 U; v% R, C& S
while[ j < people]1 w1 r( u6 J3 o
[
2 V7 S- p, r2 f% I+ F. d3 Rif( length (item i7 i  j- X4 t  d* c" v
[trade-record-all] of customer) > 3 )

7 l( v( }% I5 Z$ D+ ?+ A6 P[- y/ i( L% W3 S2 P4 j( o; V
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  E& o1 R5 @/ w# b4 r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ O. X4 M" E* h4 N# g; L* s- s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: Y- o2 M) F' m* |
]9 R2 Q7 I9 U5 ^- _6 I0 Y, D
]
; a- A6 r2 L4 hset global-proportion note: |' V  B, j; M2 e
]; b; {7 c& Q/ O
end& Z0 T/ F+ k& a8 M! b

) o  f! V$ b; Q% {/ s' F, y6 q" }/ eto do-trade7 _* W- ?8 C: P( N
;;
这个过程实际上是给双方作出评价的过程
4 `, p/ Z, J3 D' c0 Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* ~, _  L, }7 V* k8 [* n9 ?. ?) F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" B9 B6 q" b. U; Y# ?set trade-record-current lput(timer) trade-record-current% l( k+ ^# U8 V) s2 d; [/ R
;;
评价时间
8 G( h  u" o3 o- r1 s6 Zask myself [0 `) Z2 T6 F7 u& p+ d6 M" E" u
update-local-reputation3 R! r+ t4 J5 U0 N
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 H/ g3 k* P$ ]9 F$ g7 r]
! A: d7 S0 Y9 i, j" ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: G5 O( X; `9 ~8 d5 T% ^;;
将此次交易的记录加入到trade-record-one* [5 ]9 n2 w/ C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 s) P; A: E7 i7 H+ U" R6 G( s3 U
let note (item 2 trade-record-current )
, R- ]7 ]% F; x2 @% sset trade-record-current& }0 o3 `* c: C  o1 t% ?1 K
(replace-item 2 trade-record-current (item 3 trade-record-current))
; h% ~5 E8 Q% M; d2 L: Z" E$ A
set trade-record-current
( f4 _' Q* G2 Q( @, Q' B(replace-item 3 trade-record-current note)! M9 K; S* B* q  c8 B

- @4 z  H1 E* @! ^" @

, m% U; |: t2 }; Gask customer [7 ]' E9 U! ~) Y3 J: T' x
update-local-reputation" z5 K6 }# J  v( y3 _9 @
set trade-record-current
% X3 X, w2 m- O- \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 F7 B( I5 e- ~& v6 i& |6 x]
& ?1 d1 K8 ?+ g0 [& x# b! _# _2 Z0 {, c5 ^

. C1 G$ C2 v' \7 _7 e' Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 x. a/ u) n6 U. K( {  I  V. i
9 \2 ?1 Y; s* K3 c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 [# ?* A' `8 P( |;;
将此次交易的记录加入到customertrade-record-all5 ~" t' w) a2 h# n0 T7 l
end! C" c" q3 s9 G9 D5 R+ U

* c2 [+ H9 P& X4 N0 @to update-local-reputation8 E, K- w/ `$ y6 i& d0 q
set [trade-record-one-len] of myself length [trade-record-one] of myself  g& }8 f; H. D, z/ l% v3 y
9 C7 y7 r) ^- G& `' R
5 x; x; a5 c% R, }* t
;;if [trade-record-one-len] of myself > 3

! _- z  Z1 D9 o0 N, D3 J4 o7 N- jupdate-neighbor-total' I, T# w0 A% F4 e0 [. Q2 D
;;
更新邻居节点的数目,在此进行
6 _& }: p1 N) a8 }$ plet i 3+ o& ^3 l) e: ~3 V
let sum-time 0
/ T' H* p' [3 x8 Ewhile[i < [trade-record-one-len] of myself]
" H) W- d, Q( N7 k4 ]+ K2 F[
' E; @; @1 R% f6 Y0 D; ]& uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& G* R$ c, M' d4 t
set i
2 \3 O% r2 r" R: q5 B& |/ D2 B( i + 1)
& p$ H; v* q  j- I
]2 P. o" s, o! k' F
let j 3
  |, m( j# u" H# \) `6 J/ ylet sum-money 0
( t& z& ?8 X* w/ ?. P: s: m/ ywhile[j < [trade-record-one-len] of myself]
5 b3 j: q* x, I[& G- m* t0 W  ~3 r0 J' 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)
+ X- i) j, `, R, oset j1 X- w0 p# L0 Q! d# g
( j + 1)
9 w" H. V& A' u- l/ O8 {! P
]5 |( Z1 i+ g; e1 r6 x
let k 3
' c& u/ [8 V6 |2 Xlet power 02 o' X- @, l% r. @  F; E4 ]
let local 0
7 ]0 O9 q2 W9 P( Y  awhile [k <[trade-record-one-len] of myself]# O& W5 K; u0 R, J/ ]/ X
[
9 h. A0 {4 W1 o. z. `* m" eset 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)
, P) f1 v% y" Q3 J7 ~! ?set k (k + 1)
; p2 [  O& x$ `) K( `]: d+ a8 ~& a, ?( P  D) c) B2 W
set [local-reputation] of myself (local)
$ ~& G, v5 Q) f  K6 r2 Jend$ c2 Y; c6 @, Q3 D9 U" {9 _* Y8 [

" u" S8 n8 F4 |to update-neighbor-total& V+ P6 l5 l6 i% X$ P, ~
0 Y6 Q0 Z/ T* J* F+ U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. U& P  P9 D) C' c
0 o* K4 A9 B+ o' r

5 V, t/ A+ y4 @$ H. @end
" j5 W; @  X9 [& `3 i" r1 K9 L: J5 T& D5 w
to update-credibility-ijl
2 N8 o8 m( e4 B. W0 Y7 L, j$ O+ f  c# m" k5 H, K$ d+ l
;;
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。
  B8 \, n( u5 T3 t/ m6 Z( Flet l 0: c( {& H3 a! W9 k
while[ l < people ]
  e) `& n  @1 [6 ]. I+ f/ Q;;
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  w4 C) J. }; Q% i; q, [
[9 L& M2 |" M- K  Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 q$ ]5 G. K$ i* H' {if (trade-record-one-j-l-len > 3)
+ p, H4 `6 P/ P4 W/ P7 x[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/ W% G4 q2 y7 g2 r
let i 39 k7 D* v# ?/ U/ x8 W0 B+ n  u
let sum-time 0
" J  o/ S* {" \8 ]7 F) x* Bwhile[i < trade-record-one-len]
) Y0 D. P$ P( E3 _- N[* E4 t& B5 F' D* z! J, ?! S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 m4 v% x1 O& T$ b7 c( e* _# H& @: ]set i) I, T  X; q: q6 o# e8 S
( i + 1)

& D# t3 h2 {% w# c8 C2 y( j( H]
4 c! p* k6 C- }; h( vlet credibility-i-j-l 0
$ C$ Q8 [* e$ u5 ]6 `$ d+ T;;i
评价(jjl的评价)
+ c+ N; q9 `0 x3 j; [let j 3
6 c# u( z; {- e1 ^let k 4+ h7 }/ _$ z+ K: U, c* G% C2 q
while[j < trade-record-one-len]
6 U7 h' V9 ^& Q3 j( W7 T7 f[
9 U2 V7 g* g& Y# c2 k( pwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉3 ]: q$ {( w5 _) `3 I) J
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)
9 }, n4 A4 w: }' `set j
) ~8 m% G* J( D$ t3 h* l! e( j + 1)
6 a0 y4 ]( T9 B  S9 ]
]4 N* {0 j8 P! W$ l# i3 Z: R' J/ W
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 c# d  u0 h5 T* p

/ K6 S  l1 [# ]7 e, H

2 _) @9 Z1 Y+ O, l1 Xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& q3 Z0 r0 [. D2 ?
;;
及时更新il的评价质量的评价
5 q: p  L) F8 B) I% X) T7 xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" n% b: N, J8 ?" Eset l (l + 1)+ q' [- E4 ^, x5 N. N8 w
]
+ `2 W' g' n+ Q0 }' N9 `0 F9 Kend3 D9 V$ m7 w/ M
. J% |6 g# H* S
to update-credibility-list9 ~  G0 }! |8 x3 @% E
let i 0
- x) `+ Q6 l( G8 v# d$ X5 B3 Hwhile[i < people]
; {0 S9 d3 n6 _6 U! s4 V[
, R, u6 N+ j# S) S% I8 ^let j 0
1 z. Z; m: T# k3 Flet note 06 j( G3 C0 k4 N- \9 R" c% d
let k 0
$ D/ \5 J. s$ K6 Y. _* f;;
计作出过评价的邻居节点的数目3 b7 i) M; y& P9 n) J7 \9 P5 ?
while[j < people]
' W: F3 k3 A* a% J% o[8 b9 M3 m- x8 h. o
if (item j( [credibility] of turtle (i + 1)) != -1)
4 u5 ?* E: A5 R0 ?$ _;;
判断是否给本turtle的评价质量做出过评价的节点
" J) X( b. N7 o) E8 {& W[set note (note + item j ([credibility]of turtle (i + 1)))
  j) M1 E4 i0 Q& w5 e;;*(exp (-(people - 2)))/(people - 2))]
2 i0 h* n8 H- F3 v( ^3 g
set k (k + 1)& j; m3 t3 I& Y! m
]7 \: w1 G- g; n% z& _/ {! M
set j (j + 1)
/ V, ?! b5 {2 L( f  \- S: e]2 G0 Q' V6 m" b0 V6 `5 s' `
set note (note *(exp (- (1 / k)))/ k)
& Q( m9 _; k0 ?set credibility-list (replace-item i credibility-list note)2 Z8 V* Y) R/ q5 W. \
set i (i + 1)
) I( `! c/ H; C]
- ~- s: Y0 f* qend
6 y3 g( ?+ B5 @' x
1 E5 V6 G# i' L9 q' _to update-global-reputation-list
+ u- X6 d$ f  @- {let j 0
9 h. L- d5 f  qwhile[j < people]' l8 j1 j' q1 L, X$ h* q% H
[8 C0 u9 J* Q2 T3 `) t
let new 0; Z) d- N4 N6 E. o  E6 ^# J
;;
暂存新的一个全局声誉" s3 S! H4 w9 _* p/ y& {
let i 06 a2 z/ q0 y3 y* ], u& w
let sum-money 0
8 T* H6 I' P( l$ Q6 tlet credibility-money 0
; L: ]; B- Q' H& ^5 g2 v, m. vwhile [i < people]
' D" x" A8 P* y[* j( Z  T9 Z/ K& F) u* y! n6 t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' H* `" y# y( x  ]4 z0 L3 x6 n, hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 L. G5 v% [2 C* ^* E7 wset i (i + 1)7 V0 h! R* O4 @
]( c* [! o7 _" B
let k 0& V. m6 D2 b% j+ L
let new1 0* Y: ?8 r5 F2 |' w% t; l
while [k < people], l8 t) ]0 e9 Q
[- l2 N$ x" [0 S( V" b1 C" s
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)
: f( [7 D2 W0 D0 y) D! _set k (k + 1)
6 y" i3 G5 k6 s# `]
+ T" l) P/ B" M( a) C. U/ Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  s) |5 S2 g  M8 W0 S2 jset global-reputation-list (replace-item j global-reputation-list new)+ x6 A6 K% Q# h8 f" g: b7 [/ b- J
set j (j + 1)
' V( L* @. |) v; N0 x2 @# g]1 X+ Q& c3 I, O, u- ]0 H7 o
end
+ p8 R3 G" c& Q. T. A
$ ]8 T$ i. e1 a. f/ e' r
* Y, `1 \; J( r( Y7 S4 C
' J7 k, }$ g: |; l$ j6 Q8 Kto get-color
4 G) a8 H7 H; [% b3 q6 [  q
* k9 h' |  A1 yset color blue

+ z8 H# F  L; R# m- mend" E/ m% M5 ]( w5 s2 ~1 _
% q( v  y8 R! S" ^& S% E
to poll-class& _6 S: `) \8 H) f; ~: F
end) A- P7 k. ~4 B' n3 G- k$ s1 ^* P

, b; E0 _: a! W  R& hto setup-plot1
( R4 A8 x3 J7 d) `; w6 I1 z" B- ^4 S* x# o3 p
set-current-plot "Trends-of-Local-reputation"
- z  l3 k1 g2 }* U5 K$ b
% S* r: d+ Z- ~$ M9 T) h9 v
set-plot-x-range 0 xmax

: s+ L; Y  d  V! n: f9 E- J( C! y; a& l* d; K
set-plot-y-range 0.0 ymax

5 V; P) U+ `4 ?end
. g5 Y6 F2 W# X# o+ E
) y4 `2 u1 a7 Z3 o7 H4 Zto setup-plot2
: y: B# }0 X' k
% Y. {% Y+ B  K; {0 ~1 n" B9 ~set-current-plot "Trends-of-global-reputation"
8 C- W" v! y( K6 M& g8 _3 y

2 H7 n& l( G; v/ V& v! Fset-plot-x-range 0 xmax

" I/ U, X) H8 F
$ s( G: s3 Y3 x" l7 a5 rset-plot-y-range 0.0 ymax

9 H' N7 t9 I3 @( Z+ zend
* u3 k* @( G1 [/ n4 q, b1 K+ s: h8 d- N* g- ]- ]3 ]# F1 p% L" x6 \
to setup-plot3, p% ~; N8 N/ a7 T# x
, M7 e6 L. U# l9 w6 p' g5 L
set-current-plot "Trends-of-credibility"
1 S1 E$ s' z7 K6 ?( d6 s; N& D1 C
9 s) f" F: Z+ q. x1 h
set-plot-x-range 0 xmax

& ?1 l- p$ m8 z( \- o2 O- v9 P* Q, q+ ?. A- y0 O4 H4 [
set-plot-y-range 0.0 ymax

! h2 N' k! ^" [7 `7 \end
2 u  x$ M( T, q$ T9 _
9 o3 O: C. u" o" b, V1 o% r/ }- w0 dto do-plots) ?+ ~  D: R$ T
set-current-plot "Trends-of-Local-reputation"
# ~8 h# m, X5 N; V) Gset-current-plot-pen "Honest service"! N* h! G* Q6 l6 n* ?
end
4 n& I' _/ U0 n4 A
: s7 r# t) [! e" g4 p: 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.
" \+ ^# s7 S% m2 N9 ~8 M, ?
2 s/ [$ |. E6 Q( V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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