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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 I* Y* u: |! e8 D
to do-business
8 W2 A0 X  A, e2 ]7 Y: ?8 |  L rt random 360
# m6 q. S) u4 E. l& L2 t$ l; f fd 1
) L7 J+ s8 x; Z1 K( Y ifelse(other turtles-here != nobody)[; w3 n2 C- u. z; \2 `2 ]! ?
   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.
5 r" R; k+ u. K$ ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* U, p5 S" b+ i! ]4 j" D   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 o0 S# x3 b" [6 I8 ?) I   set [trade-record-one-len] of self length [trade-record-one] of self0 o8 t2 L! E! D& x; P/ o1 a
   set trade-record-current( list (timer) (random money-upper-limit))
" C. Y8 d7 ^* Y& N! H; L8 ^: d
( {3 F: `3 U* A问题的提示如下:
/ g2 G( V! d6 [* j% c( r
" F7 d. N$ L* i: h- }& perror while turtle 50 running OF in procedure DO-BUSINESS
; I+ C! K& K! p/ V  called by procedure GO4 d1 A% U0 k$ S8 x* z* M$ k0 |9 ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 k8 n& t# Q% [' [- i
(halted running of go)
4 F, J" A( K# J4 z. d
( K" |$ @! d$ v* V+ E* 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~~. i' k6 a3 M; k; d6 e/ H9 G
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
( m1 R/ @$ p( F/ I  @. B1 Q/ vglobals[5 q* f: Q% X$ }+ U% W- _
xmax
0 H" U, R7 U6 E$ k' dymax: N  Z; p5 l9 {/ O  l
global-reputation-list2 [+ D! t! W2 X1 ]9 v/ A1 [
4 ]- r8 k: j2 k6 H7 g/ ]
;;
每一个turtle的全局声誉都存在此LIST
$ I  p/ i1 G5 ?4 r9 xcredibility-list  F/ Q' c. m' ^  u# e
;;
每一个turtle的评价可信度
$ G" ~6 {) H! w+ ]2 E+ s3 O! h  Ohonest-service" f' B1 R, U. s; c- U
unhonest-service
! _7 D1 [( `: xoscillation
( y( I# b4 E4 p3 A' A3 Crand-dynamic% V* V6 K4 v, z1 F+ e. V$ Q4 s2 G
]/ N$ X! E: a$ I4 q
8 k& @8 v/ r; q3 B& C3 m: q, Q  m' o
turtles-own[
2 c" I- f& T/ S. H' ?, dtrade-record-all
, P2 X+ }, y8 o* x3 Y7 O  f;;a list of lists,
trade-record-one组成: l' D( L/ p- v/ q
trade-record-one4 ^/ C  r: n1 Q) n
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) x5 K- Z/ R" T2 W0 Z$ p

* |2 L3 d7 j" }" D& e;;[
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]]
+ ]9 C, ?0 ~0 j0 n( G* etrade-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]
4 j) D# u! X: c- r1 Pcredibility-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- Z. w& j5 N" c% f
neighbor-total: |" M/ t3 I2 V2 d6 V8 M) `( O+ D
;;
记录该turtle的邻居节点的数目% ^7 Q2 M" j! Z
trade-time; g' {3 n1 E. g
;;
当前发生交易的turtle的交易时间
  z9 @  ]9 r  Y- c1 I5 Tappraise-give' Q% o( ?2 S4 {: X/ p
;;
当前发生交易时给出的评价$ H: J8 ?: K- \8 g
appraise-receive
! i+ I' R5 A( _# o: @- r5 [;;
当前发生交易时收到的评价
' y" o) y# n( O! J8 v3 z( [: i5 ?appraise-time
  [! x$ m% s5 b; U' m;;
当前发生交易时的评价时间
' R0 o/ F" l# O, ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* S$ Y- S, w6 Itrade-times-total
6 w( h; Q' ]6 u2 h- m, m;;
与当前turtle的交易总次数4 V" c, x  [: A: C
trade-money-total& v$ ]1 ~* r5 @( f: o3 w0 @5 M
;;
与当前turtle的交易总金额% U8 _& d) m* N
local-reputation2 d1 J5 M# U( u! p" W/ Y
global-reputation7 P/ g! {% s. t
credibility3 c: d3 A. \( `. {; M
;;
评价可信度,每次交易后都需要更新5 N  W" d  `* ]6 a( q
credibility-all
! U% c9 _7 u, `/ V* q;;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
8 X* k$ F+ |6 w" J/ S/ T  h
  d# z2 k2 T4 d+ y, o* |4 j;;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
% L8 D7 G/ k/ w) U, t: Hcredibility-one
. d2 _3 g- [1 X  R; q;;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
2 l& ^0 y. x7 t% g4 H" i5 \8 U$ tglobal-proportion* b1 o/ k0 t  ^  s+ K+ |3 h9 [
customer2 R/ B7 e% v% d0 y
customer-no
- X6 O# R8 o* strust-ok
% z5 v$ K, y1 htrade-record-one-len;;trade-record-one的长度
" v6 u  _9 F3 y" R2 Z- N  F5 S]5 k4 \( @& g( W7 Z/ |
4 {/ R* x9 o) a( }# }; W; J
;;setup procedure! [7 v  R( i8 m4 `& l! L

- D' t* o, I* x2 Z3 s2 eto setup
9 Z  L; @2 L3 u- y" v
( O" y) d$ U( B; O, _: H7 Lca

$ l" N* Z2 a3 W! Y2 o0 [) U5 H) ~$ N5 H, Z# {- A
initialize-settings

) B, y/ {. p( ]* `0 i8 J3 Z+ A' h/ U- J, e; q7 l$ {
crt people [setup-turtles]
! J' M' g9 W2 F& v3 }- f
; E  P: f- p7 m. @
reset-timer
+ V- X* k2 g$ C' q0 n/ Z
9 e3 ~+ B1 {: X6 \
poll-class
# `! S0 y& H$ f& e2 j1 u

2 y0 [) |; w5 ?" ^4 _setup-plots

) S% o$ I! S5 l- A; J$ P$ b3 m" e( K3 A) a* c7 _3 Y. s# P1 I$ V
do-plots

6 ^0 u3 Y% }  z* V; d4 y( Nend" r, d: w. d' U* M

! j1 |8 Y$ Y; b  }* qto initialize-settings
; W# d, R3 B& Q/ N# B
2 c' v  O, |) ~set global-reputation-list []
- T5 h" U2 r9 S$ I0 e1 h% u8 t$ [
  @; H" t8 [' h7 G4 E
set credibility-list n-values people [0.5]

3 a- i7 Y, ?3 v- E) E. p, ?( `2 W7 s  _5 l
set honest-service 0

( D) o+ ?3 P; Y0 V' i3 N: x1 s/ q* g2 [; X9 `! Z8 N
set unhonest-service 0
: d! _9 Y# {& g, Q% v: y4 r
/ c' x4 [1 P. N7 g8 F/ n
set oscillation 0

% N2 W! ]2 {5 H4 l9 O0 v) Y; V
- W1 ?" H& n* r) z9 `set rand-dynamic 0

% m% N. Z4 w* f% f  O, h8 cend
9 Q. w, V4 B& ~
: |$ L7 j4 L$ m  kto setup-turtles 0 N0 s6 v: U( F4 Q: Q' ~( Q
set shape "person"! E. T7 L+ n& |  E' U8 G
setxy random-xcor random-ycor
" n% D* e6 |: Q3 O8 ?set trade-record-one []- F9 R! Z3 r" ?9 p  ?) `$ @
) U7 g6 A# r8 i: G# [# Q3 Z
set trade-record-all n-values people [(list (? + 1) 0 0)] ! P0 c) ^# {( N( v! m8 y3 O

" M; E/ S' @9 v( Nset trade-record-current []% D: b4 ^* O$ K3 u: b% @
set credibility-receive []( K7 l; I/ D/ x0 M8 `! w
set local-reputation 0.52 _) v9 k+ N) K- D+ J( T, M8 }
set neighbor-total 0
4 t9 M9 l+ d2 `* M) k/ rset trade-times-total 0
+ V  l3 C3 N. G% n5 V$ z0 mset trade-money-total 0# B) D# _$ H8 L+ V
set customer nobody: d1 K5 t3 t3 {1 }
set credibility-all n-values people [creat-credibility]" j! q$ b, J/ G+ H; \3 ]
set credibility n-values people [-1]7 l6 r  q, [# E+ Z
get-color; `) n. I3 G% M; d! P' m
+ E- y3 }/ X2 j8 [
end
6 b  Z7 {: ?2 [, l$ l* [
: s+ L: F( X$ j! O0 I/ Nto-report creat-credibility* J) y! v/ q6 m6 W5 J7 j/ @
report n-values people [0.5]$ X$ _' ?& {+ K6 Y- z5 Y$ ?
end
. ]  q( |+ R* m5 r1 U8 G! S
& w3 \' H- I8 P, Gto setup-plots* l. Z! K. Z0 h% o; I

) {7 g, b. S% n. o7 h' _$ pset xmax 30
, f, ~# L7 C- Q! L( n5 u
" m* m5 h/ s; A7 }, X
set ymax 1.0

) S9 d1 y) [+ t& k& @  h) {1 d- \/ w. ^7 u0 h6 e* @* B
clear-all-plots

3 j( T2 |% V. K- z4 `* @  J7 O, P  Y; b
setup-plot1

) p, {, L. c2 x" y9 V
( r: B" `, s0 K6 B9 i2 A7 qsetup-plot2
  a% s$ o. W  _9 p, e! J2 o
8 \6 `6 X  z4 f  [6 P5 {
setup-plot3
' N$ O; O" M; N
end
% z' |+ ]* E' |" g6 g( q8 h8 |7 V) {+ x4 e3 `0 v
;;run time procedures$ d8 a& Q% G4 a2 K/ w8 g- s5 k
! A# z! p4 t7 j; ?
to go/ E9 _  U- p7 L7 r8 z0 }

+ V2 g% a" F5 o* L" n4 Y0 o- o- M9 ?' task turtles [do-business]

6 ~# w8 W/ p' A! r" Lend
: `# \. r0 v3 K) ^5 a. n/ K* C
4 x8 [7 V9 W& L' n. qto do-business
# I- Y, M" [) @7 u
. l, r- M' ^! N( b. e" f3 [' E, S
5 S" z3 W. P- X$ E) P
rt random 360
( W# K, c2 g; `0 i. M/ M7 Z5 @

- h4 y" ^+ D2 R1 }! X6 H. [: Ifd 1
; L3 Y$ p4 ]" U9 q  v5 F% l  \- I9 \( ?

0 \# q2 {+ u0 _ifelse(other turtles-here != nobody)[

2 z2 L1 F2 J" \3 w, K+ v9 d
, J2 v+ G4 @! R8 j; @, R5 Q7 Cset customer one-of other turtles-here
7 o3 H0 T" A! f. B2 R3 E
0 V5 v7 _1 g$ ^8 U1 m
;; set [customer] of customer myself

. p+ H. p( c5 F) X8 O- [7 m
) }# H- e0 \# iset [trade-record-one] of self item (([who] of customer) - 1)
" C, Z8 j( X* S7 \% ?' G3 p5 _( M[trade-record-all]of self
) S: d  f! a/ S9 `9 z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 _% J/ p' k' n5 l& t  O9 F
$ V. m; @" T7 s& \$ Y6 G' c4 m2 rset [trade-record-one] of customer item (([who] of self) - 1). k: r! q) ~2 t: [) ^$ w
[trade-record-all]of customer
  g1 H2 o6 [0 \3 k: L  C' f% F
& Y% [, n5 }9 r3 C5 X
set [trade-record-one-len] of self length [trade-record-one] of self
/ W$ |! p, v! @  F/ N

# ^0 Z% j  H) p! d, Z  G& uset trade-record-current( list (timer) (random money-upper-limit))

! |9 A- N8 N. W# U2 ?& I( a. u% t  p3 q6 H$ n: ?4 _& f7 L5 H- _% ^
ask self [do-trust]* M% w; @/ i$ j4 A- F
;;
先求ij的信任度% e# i8 n% g; o+ q

% p4 f6 H4 S* y! Fif ([trust-ok] of self), e- }5 D9 D$ _& B+ Q* L" x
;;
根据ij的信任度来决定是否与j进行交易[
& O- p& d2 j/ ?  S6 Q+ v6 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' `* V' g5 {: v0 d. L
( U+ H2 R# w# b4 t. E: `) d& A0 H[
7 E* L& W8 x# M9 v

* ?3 x0 _- p0 x( W6 @* F& Cdo-trade
" Y( C- Y# G% {0 M6 {
- x( v; G) n! E" p& `7 o7 Y
update-credibility-ijl

' S5 w3 Y/ m+ [) x+ o6 I, _* U$ \
update-credibility-list
* f) J8 d2 O8 H) R& n5 O# @

7 G! _* g  \' f2 W  l6 U
( J6 U9 u; f2 B3 _& Fupdate-global-reputation-list
3 L  T7 x! n. E- `6 Z/ c

, P  R! O, @7 v5 ipoll-class
6 l3 _6 i; ]! J) z

3 s8 B4 t% ~: A% ]: u1 V* a' S  lget-color

) D3 G1 b! n2 K7 D: k- {2 R8 p2 |4 `: U+ x3 s* p7 L
]]
3 l$ }& z1 x! T6 D- L
) ?! l8 v- h5 P1 k; e, G  S;;
如果所得的信任度满足条件,则进行交易/ W' g) c. b$ k  M- {! V

5 W7 h5 T' k4 }% P+ r) Q5 h[
# G+ j! M2 J  \3 D4 V& ^

- w0 \8 y+ V* V, Q& M  R6 krt random 360

' `/ b# S6 c  {7 ^
. Q* {7 o# m4 d) e- L: {fd 1

5 _. }, e# E/ v2 a8 L6 q9 R8 z' t) d& H0 }6 d$ N/ r
]

7 D/ D5 Z4 E) o3 m, g) o8 Q; l4 V+ Q2 s0 `  S" d: x
end

2 F; O1 x8 A/ C9 n+ Z; W6 `* E% \0 H9 |# k0 i
to do-trust
3 {- W( e1 J3 Mset trust-ok False
0 `% r7 Y% V6 X
% v  Q1 h( |4 ?6 k' n
  Z9 T/ v0 [3 Q; h5 i8 u" \6 l/ E+ q/ d
let max-trade-times 0# I3 R% P! w( ]  V7 a# l7 K1 Y' N: ^
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 O5 i6 q/ t" K) Glet max-trade-money 07 g) x! ?* R; s* K& A. |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ d& l1 r5 p5 J" `0 A% Clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 X7 w3 E9 h( Q6 _$ c& ~/ }+ U* J5 W; {. W4 p5 T* o
, f2 m, k# v/ t# j
get-global-proportion
" A2 O: ^, Z/ {let trust-value) b3 g3 X1 R8 r3 p% J: O4 h; x
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)

* m/ o7 t) E8 n1 P% iif(trust-value > trade-trust-value)
  d4 @+ f. b, ~4 P5 X% i[set trust-ok true]  z$ T( r' G/ s2 Y4 {0 M
end
1 e+ _* |" Y7 n4 r. g7 P. [, @7 f) w4 M3 g3 H& W
to get-global-proportion
- @+ h* v4 O% i0 `7 jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: `/ w2 {5 w+ d4 H* I# C[set global-proportion 0]  B! Q" b6 o5 [! o  i" s
[let i 0
; h; d: L2 u& @let sum-money 0
% o: ~; _1 F: i  }( p% gwhile[ i < people]  v0 i2 [0 [) S3 F8 ]  H5 u
[
! @/ u8 t+ G% X: n3 Oif( length (item i9 E6 m" W) c! T3 u+ O+ K
[trade-record-all] of customer) > 3 )

4 a! o' [. w4 ]) l. _$ x[
# @6 ]1 }7 _: K  ^; O* q/ aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" ?  Y- [. U. s5 k# X]
* S& C0 S) X% F2 z]
2 d- C9 `5 T- n6 N; k' H* I* mlet j 0) u" v: U, ^; `' j1 v/ |6 {8 N3 }: T
let note 0( N) w* z4 m) d2 n: \) c( z1 J
while[ j < people]$ r. ?& G9 ^$ U2 e& T+ d; a
[
6 J8 W4 K( r" y6 C% x' u" }  Eif( length (item i; n0 r# D- o7 d8 i' h; X
[trade-record-all] of customer) > 3 )
2 {* x' z5 h5 i' s- d
[4 {* @  O6 s; L  d3 y8 `* ^' ^
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% H; I( i, o3 `3 ], B[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- a2 _( ]$ @) _& b. e- ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 K5 n+ A8 J& i]
2 D  @$ x# ?  L! c0 L7 ]$ d' \9 F]
5 n- d# S0 Z* L" F) Lset global-proportion note6 l, e" F# c9 m: g
], X% j8 m8 q( C, n! g# o- R
end/ P) t" D. N- F) g+ b. @
( q# G# a8 a* I; N$ e
to do-trade2 u: G  P4 N6 p# U$ [: x
;;
这个过程实际上是给双方作出评价的过程
: C5 n2 k3 `; q3 t" Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 |# E0 _! S7 {; C8 H, a; _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 C: j: A/ [5 Y5 Rset trade-record-current lput(timer) trade-record-current/ i% g( e5 s, X" p
;;
评价时间. h0 J. y+ z! N8 Y4 U6 q. Q4 E5 m
ask myself [$ V0 |: l4 u% B- b1 E
update-local-reputation  Y+ d  f+ X& ~
set trade-record-current lput([local-reputation] of myself) trade-record-current; O. E; ?6 q& {3 @: p. J
]9 U4 t  X) v4 x- J. [% u; J7 ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  \; \# s' q6 D) j; W0 p4 P) `;;
将此次交易的记录加入到trade-record-one  V% u2 D) N  y" e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 ^2 r8 d& V: ]0 I9 J& A# slet note (item 2 trade-record-current )" D8 l; t) Y% H0 \. ^8 }
set trade-record-current% I) [0 J" J. ^, D8 K
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 ^4 I- G6 j2 ]! a
set trade-record-current8 N# J* B5 O5 S- L! A% y) g* L
(replace-item 3 trade-record-current note)
! v  a. w" j- w* v8 t6 v
# ]  i( n3 [- Z/ }: r8 f2 h
, V) a# O+ ]- p* x  Q
ask customer [: c" e. J, x' _) {- ]1 j& P3 ]
update-local-reputation4 y) d8 ]8 \. M8 H3 ?4 O+ a
set trade-record-current. D2 s+ [+ T; c5 [+ n7 l+ P0 B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# a7 [  |2 E+ w9 p& L
]: _3 K& u0 i- d1 Z$ z

; V% n& \9 Y/ c/ a4 S( d% I" T
( E  P8 w6 Z2 |4 i3 ]3 @' P  m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ M$ y  s$ }1 u6 A' M; l

8 q7 x# K/ S% N- }! {set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). G$ ^6 G% _9 V- V8 ?6 ]
;;
将此次交易的记录加入到customertrade-record-all2 B! P& I" U$ n& a  ^+ W1 Z# O5 I8 {
end' v( ^6 l. Q9 {9 X
, t0 q/ Q$ ?0 Z5 q8 \& P  n' ~
to update-local-reputation
( E2 K4 _( W8 b! E! k# |. e8 vset [trade-record-one-len] of myself length [trade-record-one] of myself
: Y% z/ B( l+ B
6 W( S3 ~& C0 K8 G- ]( w0 }6 g( ?
4 K2 @7 n; S) B: ^;;if [trade-record-one-len] of myself > 3

& b7 n. ^1 Y  mupdate-neighbor-total
! ~5 w) P) V6 D+ Q3 D; D2 c;;
更新邻居节点的数目,在此进行0 e' \: U# N5 ?" ]8 G0 G
let i 3' `; H' x4 t5 d/ r$ ]8 \
let sum-time 0* x# t! p( p" h4 p
while[i < [trade-record-one-len] of myself]( u5 D& Q+ Z1 U* @1 r
[# y  _* D9 k7 g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 f: ?. N, _6 R, Nset i
; K: I( X/ v  t( i + 1)
2 Z1 ]; Z# |' g* w
]; y9 V5 b, F$ t2 _) e# ?, v% s
let j 3
4 O; n# {8 _) a2 i. Dlet sum-money 0& A) d7 w+ y- J
while[j < [trade-record-one-len] of myself]& p" [6 z0 L/ `: D
[
+ G4 Q# d2 |: u. C3 Uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
* f0 [9 S- q+ O  g* T9 a5 i4 uset j
  T3 {+ d+ S. `1 G( j + 1)
! h+ K$ P3 V$ h
]5 g1 R$ ^8 s/ ?# k+ i( r$ P
let k 38 G+ A+ q1 i! J+ t6 f8 x2 l
let power 0
+ Q$ d$ ~, G. w  b/ u' C( s+ Y5 glet local 0
+ S8 ~* R. F5 U+ Q4 g1 X8 vwhile [k <[trade-record-one-len] of myself]  z- z6 Q7 U( \) P; Y! W: Z
[& k& U) f8 ^% Q% {1 M3 i
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)
) ~! Z: W3 U. B* |set k (k + 1)" j( W. r4 ^0 R* D+ w( r
]
# C9 o9 g/ J4 v7 F& D( gset [local-reputation] of myself (local)8 ]. O1 \; m# R5 {7 U& `
end
4 f0 k4 U  F5 X3 v9 Y4 W0 H$ L3 k7 [) `9 E( I; s# C
to update-neighbor-total
! @/ D) Z) S! L: Q& j5 K5 e) `2 Y5 K- Z9 L- l9 M9 ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 f1 K# B9 o0 N  y/ h% L( K
8 }* |, M8 x6 t% @7 B

: k; a% _2 v0 Gend' c& H5 a9 k( M' O+ K8 Q

$ c/ x$ v( v, F" u' l! V% p0 s& Kto update-credibility-ijl 7 y) p% V: d: \
- e! W6 y, }. l3 r6 H/ T, B4 O3 H
;;
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。
' ?7 e6 n5 M4 a) A* xlet l 0
" n' p. s+ H# V' ^6 |while[ l < people ]% p, g6 W; l5 c7 b" M$ J
;;
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
3 o" B& h9 j0 M- V[  Y" f, T8 ]# B: E3 T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* X- r1 f! j( ]1 x  L8 u
if (trade-record-one-j-l-len > 3)6 s6 `: y5 |2 B. t
[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
. c) E7 n  H$ Z. L( f+ Plet i 3
( w% E7 S# @  dlet sum-time 0+ K6 M9 O. S/ {; P& O+ X
while[i < trade-record-one-len]+ d" u+ d5 H2 ?  }  S
[
0 C' g% ~/ M) @* U! O+ Y4 u9 M7 Gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' ?. g. X" U- i3 q7 _. Sset i% t5 j! V" M' g6 l0 K! L
( i + 1)

7 N" p4 {7 k; Q( Z]) E/ G; w1 T) m( {
let credibility-i-j-l 0- y$ q/ Y( @4 o: Q0 l# W9 d1 w# H
;;i
评价(jjl的评价)5 k) |% K. g( \
let j 3$ h8 k2 s3 m& d  C/ l
let k 48 ~) z3 ~/ h6 j# n" [7 q3 I
while[j < trade-record-one-len]! a1 }0 V- ~8 H3 \
[
8 a& ]& C- C  O  G( }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
% z; \! y1 @2 ]4 p+ u1 b+ [4 @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 O: X- F& o; V" W4 }7 `+ K; w+ Yset j
4 e* J4 @! B& p( j + 1)

+ C0 _) I8 Z: V9 c. ^- @]8 F' P* Z9 `. A( A; z$ @
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 ))! T. |5 [! q3 b7 q
$ N' ^9 b2 g$ y  Z/ F& I

9 c+ H1 ?$ S' y2 f: Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' w2 B/ O( a+ C$ c2 E# O2 i/ H2 c;;
及时更新il的评价质量的评价
3 }% T3 U# W7 F+ u9 y1 rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 F" o# Q! v4 Q4 r+ T
set l (l + 1)
/ B' {; X$ M! r. t  e+ i1 |/ Q0 w]
4 w- {% f, P& m7 v, @, wend
) _+ e" a/ @  p3 }$ N* f
# o5 b7 G3 U. x0 B6 p; [" yto update-credibility-list/ ^# S: R/ O/ s- b! z1 k
let i 0
! ~) O- q( y2 B7 u$ lwhile[i < people]
8 a$ b0 p; \* [5 @- i) R' Q[2 E; }$ d2 P+ ~
let j 0
3 o" M6 @- R& }3 Ylet note 0; h# g- @; S) K! B* L% N
let k 0
( N4 F# `- k  d4 K, o& _  m! Q;;
计作出过评价的邻居节点的数目! Q# j$ L" W' m# c
while[j < people]
* Y1 N9 @" u$ X& s[
6 F& D- [5 O( J2 F3 i' iif (item j( [credibility] of turtle (i + 1)) != -1)9 M' U& _0 P+ a. R+ Y/ {
;;
判断是否给本turtle的评价质量做出过评价的节点
- Y1 s% e7 h6 D! ^1 e[set note (note + item j ([credibility]of turtle (i + 1)))
9 t; D& l. h  `1 h' J;;*(exp (-(people - 2)))/(people - 2))]
" A5 C0 _$ R& r1 t
set k (k + 1)
) Z6 @# h& X2 U, q8 @$ |]
4 }  N8 W! y& R" h& I& `set j (j + 1)% g  k/ R' q4 J0 u% W; a9 i
]
/ Y6 b9 A  K+ p* d2 `9 z8 aset note (note *(exp (- (1 / k)))/ k)
! U& ?/ o+ S) M( b0 Nset credibility-list (replace-item i credibility-list note)3 H' r5 M- m6 b6 ?1 o7 G) E
set i (i + 1)
. m; X2 F, O  y  q]% O% a, W, c7 `6 O, V3 }/ p8 R8 x
end
0 O. W8 g9 K4 y: f& Y9 z0 R* p" L! m3 c4 a) l3 G
to update-global-reputation-list
+ k; y! n" C# f. }2 ~/ qlet j 0
* |1 ?) o8 j: a7 {1 e: Fwhile[j < people]
' o- I1 H$ E: W& r[. D9 |! F$ Q* R2 l) K
let new 0
* x4 @5 |4 f, k' U- C  B;;
暂存新的一个全局声誉
. m) |" p5 g, G( ^" E) E. ~% slet i 0
$ \- r5 T' _8 ]let sum-money 0
+ S# \  m8 ^+ F! F# J! j4 ylet credibility-money 0
! Z6 B3 D7 {6 V5 T" c4 Vwhile [i < people]) Y; f  h' G+ }6 i0 |5 p
[* A' H4 B5 \1 J  S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- b+ X  W9 R  d* M, H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" M2 p" t+ v# F; o1 `! `
set i (i + 1)
# p( l; H* R' D, R  I! O  v]5 [, w& A. m. I2 I: O
let k 0# L$ J9 p. L0 O
let new1 0
( C  k7 O: J8 a* Awhile [k < people]
: X; V2 V& C3 [; L[
2 Q7 G/ \1 i& E- h/ p* F9 f$ s  y( C1 Jset 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)
! w/ f+ x: r  {) o' jset k (k + 1)
( x0 D( U% h! r7 {]4 b; b+ n! \3 V6 M" ?7 g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ X( Z. ?/ n0 n7 ?4 _
set global-reputation-list (replace-item j global-reputation-list new)
8 q' n& k# ]) p2 f& l* rset j (j + 1)' {% \' B) z1 J5 g! y! L
]
" w1 Z5 z# m; w/ t0 r: ?* ^end6 Z. J& `1 d3 c& ]5 w+ y! @7 b

/ R: P- I3 d+ t, }* k8 y
7 u% W* q; O: T, I
) x0 {8 H3 J' V4 W8 i( Mto get-color# ~! Z3 I4 C6 r9 W7 x& g
) U8 Q5 i1 p; p' x. d* C& y4 f0 c
set color blue
$ I% |* {3 o; B
end
( N# \6 L2 [& w, H- v$ }$ V+ V, W* s, M, l, g: B1 x
to poll-class
8 e# I/ H& r/ c$ Z6 cend' [5 p! L" f" S5 s& S

7 C5 \3 K# e! Y/ W6 \! q! Eto setup-plot1
. ]/ Y2 S0 O/ @
. d6 R7 ]" i$ Zset-current-plot "Trends-of-Local-reputation"

, B9 x" A' {$ }  `) }# m" Z
8 b) `* S" [+ L; V8 C* f- Eset-plot-x-range 0 xmax

0 e0 ^: u: l, P) S  b
8 q/ T; U, q+ A& f! @3 vset-plot-y-range 0.0 ymax

, E$ x3 l: j3 t& ]8 U3 s" t4 ?end, F% b$ f7 n7 e) X" t3 _; X' N

/ U( @3 l% E! ~) J5 dto setup-plot2' Y; X. K, C7 o8 |

: i+ T# ?& ?6 U2 I$ W0 P: Gset-current-plot "Trends-of-global-reputation"
( }& X' c9 Z/ |6 i5 X9 }

* ]0 B% x; z# Fset-plot-x-range 0 xmax

7 x! f$ `5 ]; Z$ l& ]* ]- J+ N$ I7 F& c2 T& a; h
set-plot-y-range 0.0 ymax

7 |/ }6 h" N+ I5 p( `0 i/ Hend
) H! e* F* c& N, w, M1 X
4 s+ p2 x6 f% j# ~4 r9 ^to setup-plot3
/ Q' p3 Y+ @& @* J' a, h) ~8 b) l6 h1 n" _
set-current-plot "Trends-of-credibility"

9 Y; I1 x/ A8 Q
3 f$ U4 B. ]+ E% y- U7 Xset-plot-x-range 0 xmax

/ b4 c! c: z( {" o" Z
2 z$ J% P4 ^" V6 ~, xset-plot-y-range 0.0 ymax
" ^% D" i+ P/ U/ j+ S
end
2 }/ ^1 |& U; ^9 Y6 h3 t1 N1 Q. B
9 g" ~' `- C# {5 C; O- `! Pto do-plots
: G: v2 l6 [. D  Rset-current-plot "Trends-of-Local-reputation"
& B! b. z. B( A! \6 vset-current-plot-pen "Honest service"
$ D. [9 R, l$ z1 F. Q/ f9 b  Tend  o2 J# f5 d& ~" n

1 G8 N, e! d# F[ 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.
: \( o) z+ H. N+ ^3 ]6 O! R0 P+ ]: I! s
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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